Mercurial > pub > halpp
diff l476rg/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_i2c.c @ 0:32a3b1785697
a rough draft of Hardware Abstraction Layer for C++
STM32L476RG drivers
author | cin |
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date | Thu, 12 Jan 2017 02:45:43 +0300 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/l476rg/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_i2c.c Thu Jan 12 02:45:43 2017 +0300 @@ -0,0 +1,4867 @@ +/** + ****************************************************************************** + * @file stm32l4xx_hal_i2c.c + * @author MCD Application Team + * @version V1.6.0 + * @date 28-October-2016 + * @brief I2C HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the Inter Integrated Circuit (I2C) peripheral: + * + Initialization and de-initialization functions + * + IO operation functions + * + Peripheral State and Errors functions + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + The I2C HAL driver can be used as follows: + + (#) Declare a I2C_HandleTypeDef handle structure, for example: + I2C_HandleTypeDef hi2c; + + (#)Initialize the I2C low level resources by implementing the HAL_I2C_MspInit() API: + (##) Enable the I2Cx interface clock + (##) I2C pins configuration + (+++) Enable the clock for the I2C GPIOs + (+++) Configure I2C pins as alternate function open-drain + (##) NVIC configuration if you need to use interrupt process + (+++) Configure the I2Cx interrupt priority + (+++) Enable the NVIC I2C IRQ Channel + (##) DMA Configuration if you need to use DMA process + (+++) Declare a DMA_HandleTypeDef handle structure for the transmit or receive channel + (+++) Enable the DMAx interface clock using + (+++) Configure the DMA handle parameters + (+++) Configure the DMA Tx or Rx channel + (+++) Associate the initialized DMA handle to the hi2c DMA Tx or Rx handle + (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on + the DMA Tx or Rx channel + + (#) Configure the Communication Clock Timing, Own Address1, Master Addressing mode, Dual Addressing mode, + Own Address2, Own Address2 Mask, General call and Nostretch mode in the hi2c Init structure. + + (#) Initialize the I2C registers by calling the HAL_I2C_Init(), configures also the low level Hardware + (GPIO, CLOCK, NVIC...etc) by calling the customized HAL_I2C_MspInit(&hi2c) API. + + (#) To check if target device is ready for communication, use the function HAL_I2C_IsDeviceReady() + + (#) For I2C IO and IO MEM operations, three operation modes are available within this driver : + + *** Polling mode IO operation *** + ================================= + [..] + (+) Transmit in master mode an amount of data in blocking mode using HAL_I2C_Master_Transmit() + (+) Receive in master mode an amount of data in blocking mode using HAL_I2C_Master_Receive() + (+) Transmit in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Transmit() + (+) Receive in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Receive() + + *** Polling mode IO MEM operation *** + ===================================== + [..] + (+) Write an amount of data in blocking mode to a specific memory address using HAL_I2C_Mem_Write() + (+) Read an amount of data in blocking mode from a specific memory address using HAL_I2C_Mem_Read() + + + *** Interrupt mode IO operation *** + =================================== + [..] + (+) Transmit in master mode an amount of data in non-blocking mode using HAL_I2C_Master_Transmit_IT() + (+) At transmission end of transfer, HAL_I2C_MasterTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback() + (+) Receive in master mode an amount of data in non-blocking mode using HAL_I2C_Master_Receive_IT() + (+) At reception end of transfer, HAL_I2C_MasterRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback() + (+) Transmit in slave mode an amount of data in non-blocking mode using HAL_I2C_Slave_Transmit_IT() + (+) At transmission end of transfer, HAL_I2C_SlaveTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback() + (+) Receive in slave mode an amount of data in non-blocking mode using HAL_I2C_Slave_Receive_IT() + (+) At reception end of transfer, HAL_I2C_SlaveRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback() + (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2C_ErrorCallback() + (+) Abort a master I2C process communication with Interrupt using HAL_I2C_Master_Abort_IT() + (+) End of abort process, HAL_I2C_AbortCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_AbortCpltCallback() + (+) Discard a slave I2C process communication using __HAL_I2C_GENERATE_NACK() macro. + This action will inform Master to generate a Stop condition to discard the communication. + + + *** Interrupt mode IO sequential operation *** + ============================================== + [..] + (@) These interfaces allow to manage a sequential transfer with a repeated start condition + when a direction change during transfer + [..] + (+) A specific option field manage the different steps of a sequential transfer + (+) Option field values are defined through @ref I2C_XFEROPTIONS and are listed below: + (++) I2C_FIRST_AND_LAST_FRAME: No sequential usage, functionnal is same as associated interfaces in no sequential mode + (++) I2C_FIRST_FRAME: Sequential usage, this option allow to manage a sequence with start condition, address + and data to transfer without a final stop condition + (++) I2C_FIRST_AND_NEXT_FRAME: Sequential usage (Master only), this option allow to manage a sequence with start condition, address + and data to transfer without a final stop condition, an then permit a call the same master sequential interface + several times (like HAL_I2C_Master_Sequential_Transmit_IT() then HAL_I2C_Master_Sequential_Transmit_IT()) + (++) I2C_NEXT_FRAME: Sequential usage, this option allow to manage a sequence with a restart condition, address + and with new data to transfer if the direction change or manage only the new data to transfer + if no direction change and without a final stop condition in both cases + (++) I2C_LAST_FRAME: Sequential usage, this option allow to manage a sequance with a restart condition, address + and with new data to transfer if the direction change or manage only the new data to transfer + if no direction change and with a final stop condition in both cases + + (+) Differents sequential I2C interfaces are listed below: + (++) Sequential transmit in master I2C mode an amount of data in non-blocking mode using HAL_I2C_Master_Sequential_Transmit_IT() + (+++) At transmission end of current frame transfer, HAL_I2C_MasterTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback() + (++) Sequential receive in master I2C mode an amount of data in non-blocking mode using HAL_I2C_Master_Sequential_Receive_IT() + (+++) At reception end of current frame transfer, HAL_I2C_MasterRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback() + (++) Abort a master I2C process communication with Interrupt using HAL_I2C_Master_Abort_IT() + (+++) End of abort process, HAL_I2C_AbortCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_AbortCpltCallback() + (++) Enable/disable the Address listen mode in slave I2C mode using HAL_I2C_EnableListen_IT() HAL_I2C_DisableListen_IT() + (+++) When address slave I2C match, HAL_I2C_AddrCallback() is executed and user can + add his own code to check the Address Match Code and the transmission direction request by master (Write/Read). + (+++) At Listen mode end HAL_I2C_ListenCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_ListenCpltCallback() + (++) Sequential transmit in slave I2C mode an amount of data in non-blocking mode using HAL_I2C_Slave_Sequential_Transmit_IT() + (+++) At transmission end of current frame transfer, HAL_I2C_SlaveTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback() + (++) Sequential receive in slave I2C mode an amount of data in non-blocking mode using HAL_I2C_Slave_Sequential_Receive_IT() + (+++) At reception end of current frame transfer, HAL_I2C_SlaveRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback() + (++) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2C_ErrorCallback() + (++) Abort a master I2C process communication with Interrupt using HAL_I2C_Master_Abort_IT() + (++) End of abort process, HAL_I2C_AbortCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_AbortCpltCallback() + (++) Discard a slave I2C process communication using __HAL_I2C_GENERATE_NACK() macro. + This action will inform Master to generate a Stop condition to discard the communication. + + *** Interrupt mode IO MEM operation *** + ======================================= + [..] + (+) Write an amount of data in non-blocking mode with Interrupt to a specific memory address using + HAL_I2C_Mem_Write_IT() + (+) At Memory end of write transfer, HAL_I2C_MemTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback() + (+) Read an amount of data in non-blocking mode with Interrupt from a specific memory address using + HAL_I2C_Mem_Read_IT() + (+) At Memory end of read transfer, HAL_I2C_MemRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback() + (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2C_ErrorCallback() + + *** DMA mode IO operation *** + ============================== + [..] + (+) Transmit in master mode an amount of data in non-blocking mode (DMA) using + HAL_I2C_Master_Transmit_DMA() + (+) At transmission end of transfer, HAL_I2C_MasterTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback() + (+) Receive in master mode an amount of data in non-blocking mode (DMA) using + HAL_I2C_Master_Receive_DMA() + (+) At reception end of transfer, HAL_I2C_MasterRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback() + (+) Transmit in slave mode an amount of data in non-blocking mode (DMA) using + HAL_I2C_Slave_Transmit_DMA() + (+) At transmission end of transfer, HAL_I2C_SlaveTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback() + (+) Receive in slave mode an amount of data in non-blocking mode (DMA) using + HAL_I2C_Slave_Receive_DMA() + (+) At reception end of transfer, HAL_I2C_SlaveRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback() + (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2C_ErrorCallback() + (+) Abort a master I2C process communication with Interrupt using HAL_I2C_Master_Abort_IT() + (+) End of abort process, HAL_I2C_AbortCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_AbortCpltCallback() + (+) Discard a slave I2C process communication using __HAL_I2C_GENERATE_NACK() macro. + This action will inform Master to generate a Stop condition to discard the communication. + + *** DMA mode IO MEM operation *** + ================================= + [..] + (+) Write an amount of data in non-blocking mode with DMA to a specific memory address using + HAL_I2C_Mem_Write_DMA() + (+) At Memory end of write transfer, HAL_I2C_MemTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback() + (+) Read an amount of data in non-blocking mode with DMA from a specific memory address using + HAL_I2C_Mem_Read_DMA() + (+) At Memory end of read transfer, HAL_I2C_MemRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback() + (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2C_ErrorCallback() + + + *** I2C HAL driver macros list *** + ================================== + [..] + Below the list of most used macros in I2C HAL driver. + + (+) __HAL_I2C_ENABLE: Enable the I2C peripheral + (+) __HAL_I2C_DISABLE: Disable the I2C peripheral + (+) __HAL_I2C_GENERATE_NACK: Generate a Non-Acknowledge I2C peripheral in Slave mode + (+) __HAL_I2C_GET_FLAG: Check whether the specified I2C flag is set or not + (+) __HAL_I2C_CLEAR_FLAG: Clear the specified I2C pending flag + (+) __HAL_I2C_ENABLE_IT: Enable the specified I2C interrupt + (+) __HAL_I2C_DISABLE_IT: Disable the specified I2C interrupt + + [..] + (@) You can refer to the I2C HAL driver header file for more useful macros + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32l4xx_hal.h" + +/** @addtogroup STM32L4xx_HAL_Driver + * @{ + */ + +/** @defgroup I2C I2C + * @brief I2C HAL module driver + * @{ + */ + +#ifdef HAL_I2C_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ + +/** @defgroup I2C_Private_Define I2C Private Define + * @{ + */ +#define TIMING_CLEAR_MASK (0xF0FFFFFFU) /*!< I2C TIMING clear register Mask */ +#define I2C_TIMEOUT_ADDR (10000U) /*!< 10 s */ +#define I2C_TIMEOUT_BUSY (25U) /*!< 25 ms */ +#define I2C_TIMEOUT_DIR (25U) /*!< 25 ms */ +#define I2C_TIMEOUT_RXNE (25U) /*!< 25 ms */ +#define I2C_TIMEOUT_STOPF (25U) /*!< 25 ms */ +#define I2C_TIMEOUT_TC (25U) /*!< 25 ms */ +#define I2C_TIMEOUT_TCR (25U) /*!< 25 ms */ +#define I2C_TIMEOUT_TXIS (25U) /*!< 25 ms */ +#define I2C_TIMEOUT_FLAG (25U) /*!< 25 ms */ + +#define MAX_NBYTE_SIZE 255U +#define SlaveAddr_SHIFT 7U +#define SlaveAddr_MSK 0x06U + +/* Private define for @ref PreviousState usage */ +#define I2C_STATE_MSK ((uint32_t)((HAL_I2C_STATE_BUSY_TX | HAL_I2C_STATE_BUSY_RX) & (~((uint32_t)HAL_I2C_STATE_READY)))) /*!< Mask State define, keep only RX and TX bits */ +#define I2C_STATE_NONE ((uint32_t)(HAL_I2C_MODE_NONE)) /*!< Default Value */ +#define I2C_STATE_MASTER_BUSY_TX ((uint32_t)((HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | HAL_I2C_MODE_MASTER)) /*!< Master Busy TX, combinaison of State LSB and Mode enum */ +#define I2C_STATE_MASTER_BUSY_RX ((uint32_t)((HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | HAL_I2C_MODE_MASTER)) /*!< Master Busy RX, combinaison of State LSB and Mode enum */ +#define I2C_STATE_SLAVE_BUSY_TX ((uint32_t)((HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | HAL_I2C_MODE_SLAVE)) /*!< Slave Busy TX, combinaison of State LSB and Mode enum */ +#define I2C_STATE_SLAVE_BUSY_RX ((uint32_t)((HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | HAL_I2C_MODE_SLAVE)) /*!< Slave Busy RX, combinaison of State LSB and Mode enum */ +#define I2C_STATE_MEM_BUSY_TX ((uint32_t)((HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | HAL_I2C_MODE_MEM)) /*!< Memory Busy TX, combinaison of State LSB and Mode enum */ +#define I2C_STATE_MEM_BUSY_RX ((uint32_t)((HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | HAL_I2C_MODE_MEM)) /*!< Memory Busy RX, combinaison of State LSB and Mode enum */ + + +/* Private define to centralize the enable/disable of Interrupts */ +#define I2C_XFER_TX_IT (0x00000001U) +#define I2C_XFER_RX_IT (0x00000002U) +#define I2C_XFER_LISTEN_IT (0x00000004U) + +#define I2C_XFER_ERROR_IT (0x00000011U) +#define I2C_XFER_CPLT_IT (0x00000012U) +#define I2C_XFER_RELOAD_IT (0x00000012U) + +/* Private define Sequential Transfer Options default/reset value */ +#define I2C_NO_OPTION_FRAME (0xFFFF0000U) +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +#define I2C_GET_DMA_REMAIN_DATA(__HANDLE__) ((((__HANDLE__)->State) == HAL_I2C_STATE_BUSY_TX) ? \ + ((uint32_t)((__HANDLE__)->hdmatx->Instance->CNDTR)) : \ + ((uint32_t)((__HANDLE__)->hdmarx->Instance->CNDTR))) + +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ + +/** @defgroup I2C_Private_Functions I2C Private Functions + * @{ + */ +/* Private functions to handle DMA transfer */ +static void I2C_DMAMasterTransmitCplt(DMA_HandleTypeDef *hdma); +static void I2C_DMAMasterReceiveCplt(DMA_HandleTypeDef *hdma); +static void I2C_DMASlaveTransmitCplt(DMA_HandleTypeDef *hdma); +static void I2C_DMASlaveReceiveCplt(DMA_HandleTypeDef *hdma); +static void I2C_DMAError(DMA_HandleTypeDef *hdma); +static void I2C_DMAAbort(DMA_HandleTypeDef *hdma); + +/* Private functions to handle IT transfer */ +static void I2C_ITAddrCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags); +static void I2C_ITMasterSequentialCplt(I2C_HandleTypeDef *hi2c); +static void I2C_ITSlaveSequentialCplt(I2C_HandleTypeDef *hi2c); +static void I2C_ITMasterCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags); +static void I2C_ITSlaveCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags); +static void I2C_ITListenCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags); +static void I2C_ITError(I2C_HandleTypeDef *hi2c, uint32_t ErrorCode); + +/* Private functions to handle IT transfer */ +static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart); + +/* Private functions for I2C transfer IRQ handler */ +static HAL_StatusTypeDef I2C_Master_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources); +static HAL_StatusTypeDef I2C_Slave_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources); +static HAL_StatusTypeDef I2C_Master_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources); +static HAL_StatusTypeDef I2C_Slave_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources); + +/* Private functions to handle flags during polling transfer */ +static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_WaitOnTXISFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); + +/* Private functions to centralize the enable/disable of Interrupts */ +static HAL_StatusTypeDef I2C_Enable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest); +static HAL_StatusTypeDef I2C_Disable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest); + +/* Private functions to flush TXDR register */ +static void I2C_Flush_TXDR(I2C_HandleTypeDef *hi2c); + +/* Private functions to handle start, restart or stop a transfer */ +static void I2C_TransferConfig(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request); +/** + * @} + */ + +/* Exported functions --------------------------------------------------------*/ + +/** @defgroup I2C_Exported_Functions I2C Exported Functions + * @{ + */ + +/** @defgroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### Initialization and de-initialization functions ##### + =============================================================================== + [..] This subsection provides a set of functions allowing to initialize and + deinitialize the I2Cx peripheral: + + (+) User must Implement HAL_I2C_MspInit() function in which he configures + all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC ). + + (+) Call the function HAL_I2C_Init() to configure the selected device with + the selected configuration: + (++) Clock Timing + (++) Own Address 1 + (++) Addressing mode (Master, Slave) + (++) Dual Addressing mode + (++) Own Address 2 + (++) Own Address 2 Mask + (++) General call mode + (++) Nostretch mode + + (+) Call the function HAL_I2C_DeInit() to restore the default configuration + of the selected I2Cx peripheral. + +@endverbatim + * @{ + */ + +/** + * @brief Initializes the I2C according to the specified parameters + * in the I2C_InitTypeDef and initialize the associated handle. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c) +{ + /* Check the I2C handle allocation */ + if(hi2c == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance)); + assert_param(IS_I2C_OWN_ADDRESS1(hi2c->Init.OwnAddress1)); + assert_param(IS_I2C_ADDRESSING_MODE(hi2c->Init.AddressingMode)); + assert_param(IS_I2C_DUAL_ADDRESS(hi2c->Init.DualAddressMode)); + assert_param(IS_I2C_OWN_ADDRESS2(hi2c->Init.OwnAddress2)); + assert_param(IS_I2C_OWN_ADDRESS2_MASK(hi2c->Init.OwnAddress2Masks)); + assert_param(IS_I2C_GENERAL_CALL(hi2c->Init.GeneralCallMode)); + assert_param(IS_I2C_NO_STRETCH(hi2c->Init.NoStretchMode)); + + if(hi2c->State == HAL_I2C_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hi2c->Lock = HAL_UNLOCKED; + + /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */ + HAL_I2C_MspInit(hi2c); + } + + hi2c->State = HAL_I2C_STATE_BUSY; + + /* Disable the selected I2C peripheral */ + __HAL_I2C_DISABLE(hi2c); + + /*---------------------------- I2Cx TIMINGR Configuration ------------------*/ + /* Configure I2Cx: Frequency range */ + hi2c->Instance->TIMINGR = hi2c->Init.Timing & TIMING_CLEAR_MASK; + + /*---------------------------- I2Cx OAR1 Configuration ---------------------*/ + /* Disable Own Address1 before set the Own Address1 configuration */ + hi2c->Instance->OAR1 &= ~I2C_OAR1_OA1EN; + + /* Configure I2Cx: Own Address1 and ack own address1 mode */ + if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT) + { + hi2c->Instance->OAR1 = (I2C_OAR1_OA1EN | hi2c->Init.OwnAddress1); + } + else /* I2C_ADDRESSINGMODE_10BIT */ + { + hi2c->Instance->OAR1 = (I2C_OAR1_OA1EN | I2C_OAR1_OA1MODE | hi2c->Init.OwnAddress1); + } + + /*---------------------------- I2Cx CR2 Configuration ----------------------*/ + /* Configure I2Cx: Addressing Master mode */ + if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT) + { + hi2c->Instance->CR2 = (I2C_CR2_ADD10); + } + /* Enable the AUTOEND by default, and enable NACK (should be disable only during Slave process */ + hi2c->Instance->CR2 |= (I2C_CR2_AUTOEND | I2C_CR2_NACK); + + /*---------------------------- I2Cx OAR2 Configuration ---------------------*/ + /* Disable Own Address2 before set the Own Address2 configuration */ + hi2c->Instance->OAR2 &= ~I2C_DUALADDRESS_ENABLE; + + /* Configure I2Cx: Dual mode and Own Address2 */ + hi2c->Instance->OAR2 = (hi2c->Init.DualAddressMode | hi2c->Init.OwnAddress2 | (hi2c->Init.OwnAddress2Masks << 8)); + + /*---------------------------- I2Cx CR1 Configuration ----------------------*/ + /* Configure I2Cx: Generalcall and NoStretch mode */ + hi2c->Instance->CR1 = (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode); + + /* Enable the selected I2C peripheral */ + __HAL_I2C_ENABLE(hi2c); + + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->State = HAL_I2C_STATE_READY; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->Mode = HAL_I2C_MODE_NONE; + + return HAL_OK; +} + +/** + * @brief DeInitialize the I2C peripheral. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c) +{ + /* Check the I2C handle allocation */ + if(hi2c == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance)); + + hi2c->State = HAL_I2C_STATE_BUSY; + + /* Disable the I2C Peripheral Clock */ + __HAL_I2C_DISABLE(hi2c); + + /* DeInit the low level hardware: GPIO, CLOCK, NVIC */ + HAL_I2C_MspDeInit(hi2c); + + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->State = HAL_I2C_STATE_RESET; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Release Lock */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; +} + +/** + * @brief Initialize the I2C MSP. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MspInit could be implemented in the user file + */ +} + +/** + * @brief DeInitialize the I2C MSP. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MspDeInit could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup I2C_Exported_Functions_Group2 Input and Output operation functions + * @brief Data transfers functions + * +@verbatim + =============================================================================== + ##### IO operation functions ##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to manage the I2C data + transfers. + + (#) There are two modes of transfer: + (++) Blocking mode : The communication is performed in the polling mode. + The status of all data processing is returned by the same function + after finishing transfer. + (++) No-Blocking mode : The communication is performed using Interrupts + or DMA. These functions return the status of the transfer startup. + The end of the data processing will be indicated through the + dedicated I2C IRQ when using Interrupt mode or the DMA IRQ when + using DMA mode. + + (#) Blocking mode functions are : + (++) HAL_I2C_Master_Transmit() + (++) HAL_I2C_Master_Receive() + (++) HAL_I2C_Slave_Transmit() + (++) HAL_I2C_Slave_Receive() + (++) HAL_I2C_Mem_Write() + (++) HAL_I2C_Mem_Read() + (++) HAL_I2C_IsDeviceReady() + + (#) No-Blocking mode functions with Interrupt are : + (++) HAL_I2C_Master_Transmit_IT() + (++) HAL_I2C_Master_Receive_IT() + (++) HAL_I2C_Slave_Transmit_IT() + (++) HAL_I2C_Slave_Receive_IT() + (++) HAL_I2C_Mem_Write_IT() + (++) HAL_I2C_Mem_Read_IT() + + (#) No-Blocking mode functions with DMA are : + (++) HAL_I2C_Master_Transmit_DMA() + (++) HAL_I2C_Master_Receive_DMA() + (++) HAL_I2C_Slave_Transmit_DMA() + (++) HAL_I2C_Slave_Receive_DMA() + (++) HAL_I2C_Mem_Write_DMA() + (++) HAL_I2C_Mem_Read_DMA() + + (#) A set of Transfer Complete Callbacks are provided in non Blocking mode: + (++) HAL_I2C_MemTxCpltCallback() + (++) HAL_I2C_MemRxCpltCallback() + (++) HAL_I2C_MasterTxCpltCallback() + (++) HAL_I2C_MasterRxCpltCallback() + (++) HAL_I2C_SlaveTxCpltCallback() + (++) HAL_I2C_SlaveRxCpltCallback() + (++) HAL_I2C_ErrorCallback() + +@endverbatim + * @{ + */ + +/** + * @brief Transmits in master mode an amount of data in blocking mode. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferISR = NULL; + + /* Send Slave Address */ + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE); + } + else + { + hi2c->XferSize = hi2c->XferCount; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE); + } + + while(hi2c->XferCount > 0U) + { + /* Wait until TXIS flag is set */ + if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + /* Write data to TXDR */ + hi2c->Instance->TXDR = (*hi2c->pBuffPtr++); + hi2c->XferCount--; + hi2c->XferSize--; + + if((hi2c->XferSize == 0U) && (hi2c->XferCount!=0U)) + { + /* Wait until TCR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); + } + else + { + hi2c->XferSize = hi2c->XferCount; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); + } + } + } + + /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ + /* Wait until STOPF flag is set */ + if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + /* Clear Configuration Register 2 */ + I2C_RESET_CR2(hi2c); + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receives in master mode an amount of data in blocking mode. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferISR = NULL; + + /* Send Slave Address */ + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ); + } + else + { + hi2c->XferSize = hi2c->XferCount; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ); + } + + while(hi2c->XferCount > 0U) + { + /* Wait until RXNE flag is set */ + if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Read data from RXDR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR; + hi2c->XferSize--; + hi2c->XferCount--; + + if((hi2c->XferSize == 0U) && (hi2c->XferCount != 0U)) + { + /* Wait until TCR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); + } + else + { + hi2c->XferSize = hi2c->XferCount; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); + } + } + } + + /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ + /* Wait until STOPF flag is set */ + if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + /* Clear Configuration Register 2 */ + I2C_RESET_CR2(hi2c); + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmits in slave mode an amount of data in blocking mode. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferISR = NULL; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR2 &= ~I2C_CR2_NACK; + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + return HAL_TIMEOUT; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR); + + /* If 10bit addressing mode is selected */ + if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT) + { + /* Wait until ADDR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + return HAL_TIMEOUT; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR); + } + + /* Wait until DIR flag is set Transmitter mode */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, RESET, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + return HAL_TIMEOUT; + } + + while(hi2c->XferCount > 0U) + { + /* Wait until TXIS flag is set */ + if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Write data to TXDR */ + hi2c->Instance->TXDR = (*hi2c->pBuffPtr++); + hi2c->XferCount--; + } + + /* Wait until STOP flag is set */ + if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Normal use case for Transmitter mode */ + /* A NACK is generated to confirm the end of transfer */ + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear STOP flag */ + __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_STOPF); + + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + return HAL_TIMEOUT; + } + + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in slave mode an amount of data in blocking mode + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferISR = NULL; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR2 &= ~I2C_CR2_NACK; + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + return HAL_TIMEOUT; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR); + + /* Wait until DIR flag is reset Receiver mode */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, SET, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + return HAL_TIMEOUT; + } + + while(hi2c->XferCount > 0U) + { + /* Wait until RXNE flag is set */ + if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + + /* Store Last receive data if any */ + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) + { + /* Read data from RXDR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR; + hi2c->XferCount--; + } + + if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) + { + return HAL_TIMEOUT; + } + else + { + return HAL_ERROR; + } + } + + /* Read data from RXDR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR; + hi2c->XferCount--; + } + + /* Wait until STOP flag is set */ + if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear STOP flag */ + __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_STOPF); + + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + return HAL_TIMEOUT; + } + + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit in master mode an amount of data in non-blocking mode with Interrupt + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) +{ + uint32_t xfermode = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Master_ISR_IT; + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = I2C_AUTOEND_MODE; + } + + /* Send Slave Address */ + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE */ + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, xfermode, I2C_GENERATE_START_WRITE); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable ERR, TC, STOP, NACK, TXI interrupt */ + /* possible to enable all of these */ + /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ + I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in master mode an amount of data in non-blocking mode with Interrupt + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) +{ + uint32_t xfermode = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Master_ISR_IT; + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = I2C_AUTOEND_MODE; + } + + /* Send Slave Address */ + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE */ + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, xfermode, I2C_GENERATE_START_READ); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable ERR, TC, STOP, NACK, RXI interrupt */ + /* possible to enable all of these */ + /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ + I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit in slave mode an amount of data in non-blocking mode with Interrupt + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) +{ + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR2 &= ~I2C_CR2_NACK; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferSize = hi2c->XferCount; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Slave_ISR_IT; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable ERR, TC, STOP, NACK, TXI interrupt */ + /* possible to enable all of these */ + /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ + I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT | I2C_XFER_LISTEN_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in slave mode an amount of data in non-blocking mode with Interrupt + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) +{ + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR2 &= ~I2C_CR2_NACK; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferSize = hi2c->XferCount; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Slave_ISR_IT; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable ERR, TC, STOP, NACK, RXI interrupt */ + /* possible to enable all of these */ + /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ + I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT | I2C_XFER_LISTEN_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit in master mode an amount of data in non-blocking mode with DMA + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) +{ + uint32_t xfermode = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Master_ISR_DMA; + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = I2C_AUTOEND_MODE; + } + + if(hi2c->XferSize > 0U) + { + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt; + + /* Set the DMA error callback */ + hi2c->hdmatx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmatx->XferHalfCpltCallback = NULL; + hi2c->hdmatx->XferAbortCallback = NULL; + + /* Enable the DMA channel */ + HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize); + + /* Send Slave Address */ + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, xfermode, I2C_GENERATE_START_WRITE); + + /* Update XferCount value */ + hi2c->XferCount -= hi2c->XferSize; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR and NACK interrupts */ + I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT); + + /* Enable DMA Request */ + hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN; + } + else + { + /* Update Transfer ISR function pointer */ + hi2c->XferISR = I2C_Master_ISR_IT; + + /* Send Slave Address */ + /* Set NBYTES to write and generate START condition */ + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR, TC, STOP, NACK, TXI interrupt */ + /* possible to enable all of these */ + /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ + I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); + } + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in master mode an amount of data in non-blocking mode with DMA + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) +{ + uint32_t xfermode = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Master_ISR_DMA; + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = I2C_AUTOEND_MODE; + } + + if(hi2c->XferSize > 0U) + { + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmarx->XferCpltCallback = I2C_DMAMasterReceiveCplt; + + /* Set the DMA error callback */ + hi2c->hdmarx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmarx->XferHalfCpltCallback = NULL; + hi2c->hdmarx->XferAbortCallback = NULL; + + /* Enable the DMA channel */ + HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize); + + /* Send Slave Address */ + /* Set NBYTES to read and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ + I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, xfermode, I2C_GENERATE_START_READ); + + /* Update XferCount value */ + hi2c->XferCount -= hi2c->XferSize; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR and NACK interrupts */ + I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT); + + /* Enable DMA Request */ + hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN; + } + else + { + /* Update Transfer ISR function pointer */ + hi2c->XferISR = I2C_Master_ISR_IT; + + /* Send Slave Address */ + /* Set NBYTES to read and generate START condition */ + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR, TC, STOP, NACK, TXI interrupt */ + /* possible to enable all of these */ + /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ + I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); + } + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit in slave mode an amount of data in non-blocking mode with DMA + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) +{ + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferSize = hi2c->XferCount; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Slave_ISR_DMA; + + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmatx->XferCpltCallback = I2C_DMASlaveTransmitCplt; + + /* Set the DMA error callback */ + hi2c->hdmatx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmatx->XferHalfCpltCallback = NULL; + hi2c->hdmatx->XferAbortCallback = NULL; + + /* Enable the DMA channel */ + HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize); + + /* Enable Address Acknowledge */ + hi2c->Instance->CR2 &= ~I2C_CR2_NACK; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR, STOP, NACK, ADDR interrupts */ + I2C_Enable_IRQ(hi2c, I2C_XFER_LISTEN_IT); + + /* Enable DMA Request */ + hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN; + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in slave mode an amount of data in non-blocking mode with DMA + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) +{ + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferSize = hi2c->XferCount; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Slave_ISR_DMA; + + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmarx->XferCpltCallback = I2C_DMASlaveReceiveCplt; + + /* Set the DMA error callback */ + hi2c->hdmarx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmarx->XferHalfCpltCallback = NULL; + hi2c->hdmarx->XferAbortCallback = NULL; + + /* Enable the DMA channel */ + HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize); + + /* Enable Address Acknowledge */ + hi2c->Instance->CR2 &= ~I2C_CR2_NACK; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR, STOP, NACK, ADDR interrupts */ + I2C_Enable_IRQ(hi2c, I2C_XFER_LISTEN_IT); + + /* Enable DMA Request */ + hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN; + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} +/** + * @brief Write an amount of data in blocking mode to a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferISR = NULL; + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE */ + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); + } + else + { + hi2c->XferSize = hi2c->XferCount; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); + } + + do + { + /* Wait until TXIS flag is set */ + if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Write data to TXDR */ + hi2c->Instance->TXDR = (*hi2c->pBuffPtr++); + hi2c->XferCount--; + hi2c->XferSize--; + + if((hi2c->XferSize == 0U) && (hi2c->XferCount!=0U)) + { + /* Wait until TCR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); + } + else + { + hi2c->XferSize = hi2c->XferCount; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); + } + } + + }while(hi2c->XferCount > 0U); + + /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ + /* Wait until STOPF flag is reset */ + if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + /* Clear Configuration Register 2 */ + I2C_RESET_CR2(hi2c); + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Read an amount of data in blocking mode from a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferISR = NULL; + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Send Slave Address */ + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ); + } + else + { + hi2c->XferSize = hi2c->XferCount; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ); + } + + do + { + /* Wait until RXNE flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Read data from RXDR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR; + hi2c->XferSize--; + hi2c->XferCount--; + + if((hi2c->XferSize == 0U) && (hi2c->XferCount != 0U)) + { + /* Wait until TCR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); + } + else + { + hi2c->XferSize = hi2c->XferCount; + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); + } + } + }while(hi2c->XferCount > 0U); + + /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ + /* Wait until STOPF flag is reset */ + if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + /* Clear Configuration Register 2 */ + I2C_RESET_CR2(hi2c); + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} +/** + * @brief Write an amount of data in non-blocking mode with Interrupt to a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) +{ + uint32_t tickstart = 0U; + uint32_t xfermode = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Master_ISR_IT; + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = I2C_AUTOEND_MODE; + } + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ + I2C_TransferConfig(hi2c,DevAddress, hi2c->XferSize, xfermode, I2C_NO_STARTSTOP); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable ERR, TC, STOP, NACK, TXI interrupt */ + /* possible to enable all of these */ + /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ + I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Read an amount of data in non-blocking mode with Interrupt from a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) +{ + uint32_t tickstart = 0U; + uint32_t xfermode = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Master_ISR_IT; + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = I2C_AUTOEND_MODE; + } + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ + I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, xfermode, I2C_GENERATE_START_READ); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable ERR, TC, STOP, NACK, RXI interrupt */ + /* possible to enable all of these */ + /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ + I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} +/** + * @brief Write an amount of data in non-blocking mode with DMA to a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) +{ + uint32_t tickstart = 0U; + uint32_t xfermode = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Master_ISR_DMA; + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = I2C_AUTOEND_MODE; + } + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt; + + /* Set the DMA error callback */ + hi2c->hdmatx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmatx->XferHalfCpltCallback = NULL; + hi2c->hdmatx->XferAbortCallback = NULL; + + /* Enable the DMA channel */ + HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize); + + /* Send Slave Address */ + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, xfermode, I2C_NO_STARTSTOP); + + /* Update XferCount value */ + hi2c->XferCount -= hi2c->XferSize; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR and NACK interrupts */ + I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT); + + /* Enable DMA Request */ + hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN; + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Reads an amount of data in non-blocking mode with DMA from a specific memory address. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be read + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) +{ + uint32_t tickstart = 0U; + uint32_t xfermode = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferISR = I2C_Master_ISR_DMA; + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = I2C_AUTOEND_MODE; + } + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmarx->XferCpltCallback = I2C_DMAMasterReceiveCplt; + + /* Set the DMA error callback */ + hi2c->hdmarx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmarx->XferHalfCpltCallback = NULL; + hi2c->hdmarx->XferAbortCallback = NULL; + + /* Enable the DMA channel */ + HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize); + + /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ + I2C_TransferConfig(hi2c,DevAddress, hi2c->XferSize, xfermode, I2C_GENERATE_START_READ); + + /* Update XferCount value */ + hi2c->XferCount -= hi2c->XferSize; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Enable DMA Request */ + hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN; + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR and NACK interrupts */ + I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Checks if target device is ready for communication. + * @note This function is used with Memory devices + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param Trials Number of trials + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout) +{ + uint32_t tickstart = 0U; + + __IO uint32_t I2C_Trials = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + do + { + /* Generate Start */ + hi2c->Instance->CR2 = I2C_GENERATE_START(hi2c->Init.AddressingMode,DevAddress); + + /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ + /* Wait until STOPF flag is set or a NACK flag is set*/ + tickstart = HAL_GetTick(); + while((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET) && (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == RESET) && (hi2c->State != HAL_I2C_STATE_TIMEOUT)) + { + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick() - tickstart) > Timeout)) + { + /* Device is ready */ + hi2c->State = HAL_I2C_STATE_READY; + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + } + + /* Check if the NACKF flag has not been set */ + if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == RESET) + { + /* Wait until STOPF flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + /* Device is ready */ + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + /* Wait until STOPF flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Clear STOP Flag, auto generated with autoend*/ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + } + + /* Check if the maximum allowed number of trials has been reached */ + if (I2C_Trials++ == Trials) + { + /* Generate Stop */ + hi2c->Instance->CR2 |= I2C_CR2_STOP; + + /* Wait until STOPF flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + } + }while(I2C_Trials < Trials); + + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Sequential transmit in master I2C mode an amount of data in non-blocking mode with Interrupt. + * @note This interface allow to manage repeated start condition when a direction change during transfer + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Sequential_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) +{ + uint32_t xfermode = 0U; + uint32_t xferrequest = I2C_GENERATE_START_WRITE; + + /* Check the parameters */ + assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = XferOptions; + hi2c->XferISR = I2C_Master_ISR_IT; + + /* If size > MAX_NBYTE_SIZE, use reload mode */ + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = hi2c->XferOptions; + } + + /* If transfer direction not change, do not generate Restart Condition */ + /* Mean Previous state is same as current state */ + if(hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX) + { + xferrequest = I2C_NO_STARTSTOP; + } + + /* Send Slave Address and set NBYTES to write */ + I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, xfermode, xferrequest); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Sequential receive in master I2C mode an amount of data in non-blocking mode with Interrupt + * @note This interface allow to manage repeated start condition when a direction change during transfer + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Sequential_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) +{ + uint32_t xfermode = 0U; + uint32_t xferrequest = I2C_GENERATE_START_READ; + + /* Check the parameters */ + assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferOptions = XferOptions; + hi2c->XferISR = I2C_Master_ISR_IT; + + /* If hi2c->XferCount > MAX_NBYTE_SIZE, use reload mode */ + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = hi2c->XferOptions; + } + + /* If transfer direction not change, do not generate Restart Condition */ + /* Mean Previous state is same as current state */ + if(hi2c->PreviousState == I2C_STATE_MASTER_BUSY_RX) + { + xferrequest = I2C_NO_STARTSTOP; + } + + /* Send Slave Address and set NBYTES to read */ + I2C_TransferConfig(hi2c,DevAddress, hi2c->XferSize, xfermode, xferrequest); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Sequential transmit in slave/device I2C mode an amount of data in non-blocking mode with Interrupt + * @note This interface allow to manage repeated start condition when a direction change during transfer + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Sequential_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions) +{ + /* Check the parameters */ + assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); + + if((hi2c->State & HAL_I2C_STATE_LISTEN) == HAL_I2C_STATE_LISTEN) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Disable Interrupts, to prevent preemption during treatment in case of multicall */ + I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_TX_IT); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */ + /* and then toggle the HAL slave RX state to TX state */ + if(hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN) + { + /* Disable associated Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT); + } + + hi2c->State = HAL_I2C_STATE_BUSY_TX_LISTEN; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR2 &= ~I2C_CR2_NACK; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferSize = hi2c->XferCount; + hi2c->XferOptions = XferOptions; + hi2c->XferISR = I2C_Slave_ISR_IT; + + if(I2C_GET_DIR(hi2c) == I2C_DIRECTION_RECEIVE) + { + /* Clear ADDR flag after prepare the transfer parameters */ + /* This action will generate an acknowledge to the Master */ + __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* REnable ADDR interrupt */ + I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT | I2C_XFER_LISTEN_IT); + + return HAL_OK; + } + else + { + return HAL_ERROR; + } +} + +/** + * @brief Sequential receive in slave/device I2C mode an amount of data in non-blocking mode with Interrupt + * @note This interface allow to manage repeated start condition when a direction change during transfer + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Sequential_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions) +{ + /* Check the parameters */ + assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); + + if((hi2c->State & HAL_I2C_STATE_LISTEN) == HAL_I2C_STATE_LISTEN) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Disable Interrupts, to prevent preemption during treatment in case of multicall */ + I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_RX_IT); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */ + /* and then toggle the HAL slave TX state to RX state */ + if(hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN) + { + /* Disable associated Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT); + } + + hi2c->State = HAL_I2C_STATE_BUSY_RX_LISTEN; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR2 &= ~I2C_CR2_NACK; + + /* Prepare transfer parameters */ + hi2c->pBuffPtr = pData; + hi2c->XferCount = Size; + hi2c->XferSize = hi2c->XferCount; + hi2c->XferOptions = XferOptions; + hi2c->XferISR = I2C_Slave_ISR_IT; + + if(I2C_GET_DIR(hi2c) == I2C_DIRECTION_TRANSMIT) + { + /* Clear ADDR flag after prepare the transfer parameters */ + /* This action will generate an acknowledge to the Master */ + __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* REnable ADDR interrupt */ + I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT | I2C_XFER_LISTEN_IT); + + return HAL_OK; + } + else + { + return HAL_ERROR; + } +} + +/** + * @brief Enable the Address listen mode with Interrupt. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_EnableListen_IT(I2C_HandleTypeDef *hi2c) +{ + if(hi2c->State == HAL_I2C_STATE_READY) + { + hi2c->State = HAL_I2C_STATE_LISTEN; + hi2c->XferISR = I2C_Slave_ISR_IT; + + /* Enable the Address Match interrupt */ + I2C_Enable_IRQ(hi2c, I2C_XFER_LISTEN_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Disable the Address listen mode with Interrupt. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_DisableListen_IT(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of tmp to prevent undefined behavior of volatile usage */ + uint32_t tmp; + + /* Disable Address listen mode only if a transfer is not ongoing */ + if(hi2c->State == HAL_I2C_STATE_LISTEN) + { + tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; + hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + hi2c->XferISR = NULL; + + /* Disable the Address Match interrupt */ + I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Abort a master I2C IT or DMA process communication with Interrupt. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Abort_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress) +{ + if(hi2c->Mode == HAL_I2C_MODE_MASTER) + { + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT); + I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT); + + /* Set State at HAL_I2C_STATE_ABORT */ + hi2c->State = HAL_I2C_STATE_ABORT; + + /* Set NBYTES to 1 to generate a dummy read on I2C peripheral */ + /* Set AUTOEND mode, this will generate a NACK then STOP condition to abort the current transfer */ + I2C_TransferConfig(hi2c, DevAddress, 1, I2C_AUTOEND_MODE, I2C_GENERATE_STOP); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + I2C_Enable_IRQ(hi2c, I2C_XFER_CPLT_IT); + + return HAL_OK; + } + else + { + /* Wrong usage of abort function */ + /* This function should be used only in case of abort monitored by master device */ + return HAL_ERROR; + } +} + +/** + * @} + */ + +/** @defgroup I2C_IRQ_Handler_and_Callbacks IRQ Handler and Callbacks + * @{ + */ + +/** + * @brief This function handles I2C event interrupt request. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c) +{ + /* Get current IT Flags and IT sources value */ + uint32_t itflags = READ_REG(hi2c->Instance->ISR); + uint32_t itsources = READ_REG(hi2c->Instance->CR1); + + /* I2C events treatment -------------------------------------*/ + if(hi2c->XferISR != NULL) + { + hi2c->XferISR(hi2c, itflags, itsources); + } +} + +/** + * @brief This function handles I2C error interrupt request. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c) +{ + uint32_t itflags = READ_REG(hi2c->Instance->ISR); + uint32_t itsources = READ_REG(hi2c->Instance->CR1); + + /* I2C Bus error interrupt occurred ------------------------------------*/ + if(((itflags & I2C_FLAG_BERR) != RESET) && ((itsources & I2C_IT_ERRI) != RESET)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_BERR; + + /* Clear BERR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_BERR); + } + + /* I2C Over-Run/Under-Run interrupt occurred ----------------------------------------*/ + if(((itflags & I2C_FLAG_OVR) != RESET) && ((itsources & I2C_IT_ERRI) != RESET)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_OVR; + + /* Clear OVR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_OVR); + } + + /* I2C Arbitration Loss error interrupt occurred -------------------------------------*/ + if(((itflags & I2C_FLAG_ARLO) != RESET) && ((itsources & I2C_IT_ERRI) != RESET)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_ARLO; + + /* Clear ARLO flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ARLO); + } + + /* Call the Error Callback in case of Error detected */ + if((hi2c->ErrorCode & (HAL_I2C_ERROR_BERR | HAL_I2C_ERROR_OVR | HAL_I2C_ERROR_ARLO)) != HAL_I2C_ERROR_NONE) + { + I2C_ITError(hi2c, hi2c->ErrorCode); + } +} + +/** + * @brief Master Tx Transfer completed callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MasterTxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Master Rx Transfer completed callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MasterRxCpltCallback could be implemented in the user file + */ +} + +/** @brief Slave Tx Transfer completed callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_SlaveTxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Slave Rx Transfer completed callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_SlaveRxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Slave Address Match callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param TransferDirection: Master request Transfer Direction (Write/Read), value of @ref I2C_XFERDIRECTION + * @param AddrMatchCode: Address Match Code + * @retval None + */ +__weak void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + UNUSED(TransferDirection); + UNUSED(AddrMatchCode); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_AddrCallback() could be implemented in the user file + */ +} + +/** + * @brief Listen Complete callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_ListenCpltCallback() could be implemented in the user file + */ +} + +/** + * @brief Memory Tx Transfer completed callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MemTxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Memory Rx Transfer completed callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MemRxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief I2C error callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_ErrorCallback could be implemented in the user file + */ +} + +/** + * @brief I2C abort callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_AbortCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_AbortCpltCallback could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup I2C_Exported_Functions_Group3 Peripheral State, Mode and Error functions + * @brief Peripheral State, Mode and Error functions + * +@verbatim + =============================================================================== + ##### Peripheral State, Mode and Error functions ##### + =============================================================================== + [..] + This subsection permit to get in run-time the status of the peripheral + and the data flow. + +@endverbatim + * @{ + */ + +/** + * @brief Return the I2C handle state. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval HAL state + */ +HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c) +{ + /* Return I2C handle state */ + return hi2c->State; +} + +/** + * @brief Returns the I2C Master, Slave, Memory or no mode. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL mode + */ +HAL_I2C_ModeTypeDef HAL_I2C_GetMode(I2C_HandleTypeDef *hi2c) +{ + return hi2c->Mode; +} + +/** +* @brief Return the I2C error code. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. +* @retval I2C Error Code +*/ +uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c) +{ + return hi2c->ErrorCode; +} + +/** + * @} + */ + +/** + * @} + */ + +/** @addtogroup I2C_Private_Functions + * @{ + */ + +/** + * @brief Interrupt Sub-Routine which handle the Interrupt Flags Master Mode with Interrupt. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param ITFlags Interrupt flags to handle. + * @param ITSources Interrupt sources enabled. + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Master_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources) +{ + uint16_t devaddress = 0U; + + /* Process Locked */ + __HAL_LOCK(hi2c); + + if(((ITFlags & I2C_FLAG_AF) != RESET) && ((ITSources & I2C_IT_NACKI) != RESET)) + { + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Set corresponding Error Code */ + /* No need to generate STOP, it is automatically done */ + /* Error callback will be send during stop flag treatment */ + hi2c->ErrorCode |= HAL_I2C_ERROR_AF; + + /* Flush TX register */ + I2C_Flush_TXDR(hi2c); + } + else if(((ITFlags & I2C_FLAG_RXNE) != RESET) && ((ITSources & I2C_IT_RXI) != RESET)) + { + /* Read data from RXDR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR; + hi2c->XferSize--; + hi2c->XferCount--; + } + else if(((ITFlags & I2C_FLAG_TXIS) != RESET) && ((ITSources & I2C_IT_TXI) != RESET)) + { + /* Write data to TXDR */ + hi2c->Instance->TXDR = (*hi2c->pBuffPtr++); + hi2c->XferSize--; + hi2c->XferCount--; + } + else if(((ITFlags & I2C_FLAG_TCR) != RESET) && ((ITSources & I2C_IT_TCI) != RESET)) + { + if((hi2c->XferSize == 0U) && (hi2c->XferCount != 0U)) + { + devaddress = (hi2c->Instance->CR2 & I2C_CR2_SADD); + + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + I2C_TransferConfig(hi2c, devaddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); + } + else + { + hi2c->XferSize = hi2c->XferCount; + if(hi2c->XferOptions != I2C_NO_OPTION_FRAME) + { + I2C_TransferConfig(hi2c, devaddress, hi2c->XferSize, hi2c->XferOptions, I2C_NO_STARTSTOP); + } + else + { + I2C_TransferConfig(hi2c, devaddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); + } + } + } + else + { + /* Call TxCpltCallback() if no stop mode is set */ + if(I2C_GET_STOP_MODE(hi2c) != I2C_AUTOEND_MODE) + { + /* Call I2C Master Sequential complete process */ + I2C_ITMasterSequentialCplt(hi2c); + } + else + { + /* Wrong size Status regarding TCR flag event */ + /* Call the corresponding callback to inform upper layer of End of Transfer */ + I2C_ITError(hi2c, HAL_I2C_ERROR_SIZE); + } + } + } + else if(((ITFlags & I2C_FLAG_TC) != RESET) && ((ITSources & I2C_IT_TCI) != RESET)) + { + if(hi2c->XferCount == 0U) + { + if(I2C_GET_STOP_MODE(hi2c) != I2C_AUTOEND_MODE) + { + /* Generate a stop condition in case of no transfer option */ + if(hi2c->XferOptions == I2C_NO_OPTION_FRAME) + { + /* Generate Stop */ + hi2c->Instance->CR2 |= I2C_CR2_STOP; + } + else + { + /* Call I2C Master Sequential complete process */ + I2C_ITMasterSequentialCplt(hi2c); + } + } + } + else + { + /* Wrong size Status regarding TC flag event */ + /* Call the corresponding callback to inform upper layer of End of Transfer */ + I2C_ITError(hi2c, HAL_I2C_ERROR_SIZE); + } + } + + if(((ITFlags & I2C_FLAG_STOPF) != RESET) && ((ITSources & I2C_IT_STOPI) != RESET)) + { + /* Call I2C Master complete process */ + I2C_ITMasterCplt(hi2c, ITFlags); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; +} + +/** + * @brief Interrupt Sub-Routine which handle the Interrupt Flags Slave Mode with Interrupt. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param ITFlags Interrupt flags to handle. + * @param ITSources Interrupt sources enabled. + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Slave_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources) +{ + /* Process locked */ + __HAL_LOCK(hi2c); + + if(((ITFlags & I2C_FLAG_AF) != RESET) && ((ITSources & I2C_IT_NACKI) != RESET)) + { + /* Check that I2C transfer finished */ + /* if yes, normal use case, a NACK is sent by the MASTER when Transfer is finished */ + /* Mean XferCount == 0*/ + /* So clear Flag NACKF only */ + if(hi2c->XferCount == 0U) + { + if(((hi2c->XferOptions == I2C_FIRST_AND_LAST_FRAME) || (hi2c->XferOptions == I2C_LAST_FRAME)) && \ + (hi2c->State == HAL_I2C_STATE_LISTEN)) + { + /* Call I2C Listen complete process */ + I2C_ITListenCplt(hi2c, ITFlags); + } + else if((hi2c->XferOptions != I2C_NO_OPTION_FRAME) && (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN)) + { + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Flush TX register */ + I2C_Flush_TXDR(hi2c); + + /* Last Byte is Transmitted */ + /* Call I2C Slave Sequential complete process */ + I2C_ITSlaveSequentialCplt(hi2c); + } + else + { + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + } + } + else + { + /* if no, error use case, a Non-Acknowledge of last Data is generated by the MASTER*/ + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Set ErrorCode corresponding to a Non-Acknowledge */ + hi2c->ErrorCode |= HAL_I2C_ERROR_AF; + } + } + else if(((ITFlags & I2C_FLAG_RXNE) != RESET) && ((ITSources & I2C_IT_RXI) != RESET)) + { + if(hi2c->XferCount > 0U) + { + /* Read data from RXDR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR; + hi2c->XferSize--; + hi2c->XferCount--; + } + + if((hi2c->XferCount == 0U) && \ + (hi2c->XferOptions != I2C_NO_OPTION_FRAME)) + { + /* Call I2C Slave Sequential complete process */ + I2C_ITSlaveSequentialCplt(hi2c); + } + } + else if(((ITFlags & I2C_FLAG_ADDR) != RESET) && ((ITSources & I2C_IT_ADDRI) != RESET)) + { + I2C_ITAddrCplt(hi2c, ITFlags); + } + else if(((ITFlags & I2C_FLAG_TXIS) != RESET) && ((ITSources & I2C_IT_TXI) != RESET)) + { + /* Write data to TXDR only if XferCount not reach "0" */ + /* A TXIS flag can be set, during STOP treatment */ + /* Check if all Datas have already been sent */ + /* If it is the case, this last write in TXDR is not sent, correspond to a dummy TXIS event */ + if(hi2c->XferCount > 0U) + { + /* Write data to TXDR */ + hi2c->Instance->TXDR = (*hi2c->pBuffPtr++); + hi2c->XferCount--; + hi2c->XferSize--; + } + else + { + if((hi2c->XferOptions == I2C_NEXT_FRAME) || (hi2c->XferOptions == I2C_FIRST_FRAME)) + { + /* Last Byte is Transmitted */ + /* Call I2C Slave Sequential complete process */ + I2C_ITSlaveSequentialCplt(hi2c); + } + } + } + + /* Check if STOPF is set */ + if(((ITFlags & I2C_FLAG_STOPF) != RESET) && ((ITSources & I2C_IT_STOPI) != RESET)) + { + /* Call I2C Slave complete process */ + I2C_ITSlaveCplt(hi2c, ITFlags); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; +} + +/** + * @brief Interrupt Sub-Routine which handle the Interrupt Flags Master Mode with DMA. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param ITFlags Interrupt flags to handle. + * @param ITSources Interrupt sources enabled. + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Master_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources) +{ + uint16_t devaddress = 0U; + uint32_t xfermode = 0U; + + /* Process Locked */ + __HAL_LOCK(hi2c); + + if(((ITFlags & I2C_FLAG_AF) != RESET) && ((ITSources & I2C_IT_NACKI) != RESET)) + { + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Set corresponding Error Code */ + hi2c->ErrorCode |= HAL_I2C_ERROR_AF; + + /* No need to generate STOP, it is automatically done */ + /* But enable STOP interrupt, to treat it */ + /* Error callback will be send during stop flag treatment */ + I2C_Enable_IRQ(hi2c, I2C_XFER_CPLT_IT); + + /* Flush TX register */ + I2C_Flush_TXDR(hi2c); + } + else if(((ITFlags & I2C_FLAG_TCR) != RESET) && ((ITSources & I2C_IT_TCI) != RESET)) + { + /* Disable TC interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_TCI); + + if(hi2c->XferCount != 0U) + { + /* Recover Slave address */ + devaddress = (hi2c->Instance->CR2 & I2C_CR2_SADD); + + /* Prepare the new XferSize to transfer */ + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + xfermode = I2C_RELOAD_MODE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + xfermode = I2C_AUTOEND_MODE; + } + + /* Set the new XferSize in Nbytes register */ + I2C_TransferConfig(hi2c, devaddress, hi2c->XferSize, xfermode, I2C_NO_STARTSTOP); + + /* Update XferCount value */ + hi2c->XferCount -= hi2c->XferSize; + + /* Enable DMA Request */ + if(hi2c->State == HAL_I2C_STATE_BUSY_RX) + { + hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN; + } + else + { + hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN; + } + } + else + { + /* Wrong size Status regarding TCR flag event */ + /* Call the corresponding callback to inform upper layer of End of Transfer */ + I2C_ITError(hi2c, HAL_I2C_ERROR_SIZE); + } + } + else if(((ITFlags & I2C_FLAG_STOPF) != RESET) && ((ITSources & I2C_IT_STOPI) != RESET)) + { + /* Call I2C Master complete process */ + I2C_ITMasterCplt(hi2c, ITFlags); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; +} + +/** + * @brief Interrupt Sub-Routine which handle the Interrupt Flags Slave Mode with DMA. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param ITFlags Interrupt flags to handle. + * @param ITSources Interrupt sources enabled. + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Slave_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources) +{ + /* Process locked */ + __HAL_LOCK(hi2c); + + if(((ITFlags & I2C_FLAG_AF) != RESET) && ((ITSources & I2C_IT_NACKI) != RESET)) + { + /* Check that I2C transfer finished */ + /* if yes, normal use case, a NACK is sent by the MASTER when Transfer is finished */ + /* Mean XferCount == 0 */ + /* So clear Flag NACKF only */ + if(I2C_GET_DMA_REMAIN_DATA(hi2c) == 0U) + { + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + } + else + { + /* if no, error use case, a Non-Acknowledge of last Data is generated by the MASTER*/ + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Set ErrorCode corresponding to a Non-Acknowledge */ + hi2c->ErrorCode |= HAL_I2C_ERROR_AF; + } + } + else if(((ITFlags & I2C_FLAG_ADDR) != RESET) && ((ITSources & I2C_IT_ADDRI) != RESET)) + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR); + } + else if(((ITFlags & I2C_FLAG_STOPF) != RESET) && ((ITSources & I2C_IT_STOPI) != RESET)) + { + /* Call I2C Slave complete process */ + I2C_ITSlaveCplt(hi2c, ITFlags); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; +} + +/** + * @brief Master sends target device address followed by internal memory address for write request. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart) +{ + I2C_TransferConfig(hi2c,DevAddress,MemAddSize, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE); + + /* Wait until TXIS flag is set */ + if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* If Memory address size is 8Bit */ + if(MemAddSize == I2C_MEMADD_SIZE_8BIT) + { + /* Send Memory Address */ + hi2c->Instance->TXDR = I2C_MEM_ADD_LSB(MemAddress); + } + /* If Memory address size is 16Bit */ + else + { + /* Send MSB of Memory Address */ + hi2c->Instance->TXDR = I2C_MEM_ADD_MSB(MemAddress); + + /* Wait until TXIS flag is set */ + if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Send LSB of Memory Address */ + hi2c->Instance->TXDR = I2C_MEM_ADD_LSB(MemAddress); + } + + /* Wait until TCR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, Tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + +return HAL_OK; +} + +/** + * @brief Master sends target device address followed by internal memory address for read request. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart) +{ + I2C_TransferConfig(hi2c,DevAddress,MemAddSize, I2C_SOFTEND_MODE, I2C_GENERATE_START_WRITE); + + /* Wait until TXIS flag is set */ + if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* If Memory address size is 8Bit */ + if(MemAddSize == I2C_MEMADD_SIZE_8BIT) + { + /* Send Memory Address */ + hi2c->Instance->TXDR = I2C_MEM_ADD_LSB(MemAddress); + } + /* If Memory address size is 16Bit */ + else + { + /* Send MSB of Memory Address */ + hi2c->Instance->TXDR = I2C_MEM_ADD_MSB(MemAddress); + + /* Wait until TXIS flag is set */ + if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Send LSB of Memory Address */ + hi2c->Instance->TXDR = I2C_MEM_ADD_LSB(MemAddress); + } + + /* Wait until TC flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TC, RESET, Timeout, Tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + return HAL_OK; +} + +/** + * @brief I2C Address complete process callback. + * @param hi2c I2C handle. + * @param ITFlags Interrupt flags to handle. + * @retval None + */ +static void I2C_ITAddrCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags) +{ + uint8_t transferdirection = 0U; + uint16_t slaveaddrcode = 0U; + uint16_t ownadd1code = 0U; + uint16_t ownadd2code = 0U; + + /* Prevent unused argument(s) compilation warning */ + UNUSED(ITFlags); + + /* In case of Listen state, need to inform upper layer of address match code event */ + if((hi2c->State & HAL_I2C_STATE_LISTEN) == HAL_I2C_STATE_LISTEN) + { + transferdirection = I2C_GET_DIR(hi2c); + slaveaddrcode = I2C_GET_ADDR_MATCH(hi2c); + ownadd1code = I2C_GET_OWN_ADDRESS1(hi2c); + ownadd2code = I2C_GET_OWN_ADDRESS2(hi2c); + + /* If 10bits addressing mode is selected */ + if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT) + { + if((slaveaddrcode & SlaveAddr_MSK) == ((ownadd1code >> SlaveAddr_SHIFT) & SlaveAddr_MSK)) + { + slaveaddrcode = ownadd1code; + hi2c->AddrEventCount++; + if(hi2c->AddrEventCount == 2U) + { + /* Reset Address Event counter */ + hi2c->AddrEventCount = 0U; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call Slave Addr callback */ + HAL_I2C_AddrCallback(hi2c, transferdirection, slaveaddrcode); + } + } + else + { + slaveaddrcode = ownadd2code; + + /* Disable ADDR Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call Slave Addr callback */ + HAL_I2C_AddrCallback(hi2c, transferdirection, slaveaddrcode); + } + } + /* else 7 bits addressing mode is selected */ + else + { + /* Disable ADDR Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call Slave Addr callback */ + HAL_I2C_AddrCallback(hi2c, transferdirection, slaveaddrcode); + } + } + /* Else clear address flag only */ + else + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + } +} + +/** + * @brief I2C Master sequential complete process. + * @param hi2c I2C handle. + * @retval None + */ +static void I2C_ITMasterSequentialCplt(I2C_HandleTypeDef *hi2c) +{ + /* Reset I2C handle mode */ + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* No Generate Stop, to permit restart mode */ + /* The stop will be done at the end of transfer, when I2C_AUTOEND_MODE enable */ + if (hi2c->State == HAL_I2C_STATE_BUSY_TX) + { + hi2c->State = HAL_I2C_STATE_READY; + hi2c->PreviousState = I2C_STATE_MASTER_BUSY_TX; + hi2c->XferISR = NULL; + + /* Disable Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_MasterTxCpltCallback(hi2c); + } + /* hi2c->State == HAL_I2C_STATE_BUSY_RX */ + else + { + hi2c->State = HAL_I2C_STATE_READY; + hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX; + hi2c->XferISR = NULL; + + /* Disable Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_MasterRxCpltCallback(hi2c); + } +} + +/** + * @brief I2C Slave sequential complete process. + * @param hi2c I2C handle. + * @retval None + */ +static void I2C_ITSlaveSequentialCplt(I2C_HandleTypeDef *hi2c) +{ + /* Reset I2C handle mode */ + hi2c->Mode = HAL_I2C_MODE_NONE; + + if(hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN) + { + /* Remove HAL_I2C_STATE_SLAVE_BUSY_TX, keep only HAL_I2C_STATE_LISTEN */ + hi2c->State = HAL_I2C_STATE_LISTEN; + hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX; + + /* Disable Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the Tx complete callback to inform upper layer of the end of transmit process */ + HAL_I2C_SlaveTxCpltCallback(hi2c); + } + + else if(hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN) + { + /* Remove HAL_I2C_STATE_SLAVE_BUSY_RX, keep only HAL_I2C_STATE_LISTEN */ + hi2c->State = HAL_I2C_STATE_LISTEN; + hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_RX; + + /* Disable Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the Rx complete callback to inform upper layer of the end of receive process */ + HAL_I2C_SlaveRxCpltCallback(hi2c); + } +} + +/** + * @brief I2C Master complete process. + * @param hi2c I2C handle. + * @param ITFlags Interrupt flags to handle. + * @retval None + */ +static void I2C_ITMasterCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags) +{ + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + /* Clear Configuration Register 2 */ + I2C_RESET_CR2(hi2c); + + /* Reset handle parameters */ + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->XferISR = NULL; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + if((ITFlags & I2C_FLAG_AF) != RESET) + { + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Set acknowledge error code */ + hi2c->ErrorCode |= HAL_I2C_ERROR_AF; + } + + /* Flush TX register */ + I2C_Flush_TXDR(hi2c); + + /* Disable Interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT| I2C_XFER_RX_IT); + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + if((hi2c->ErrorCode != HAL_I2C_ERROR_NONE) || (hi2c->State == HAL_I2C_STATE_ABORT)) + { + /* Call the corresponding callback to inform upper layer of End of Transfer */ + I2C_ITError(hi2c, hi2c->ErrorCode); + } + /* hi2c->State == HAL_I2C_STATE_BUSY_TX */ + else if(hi2c->State == HAL_I2C_STATE_BUSY_TX) + { + hi2c->State = HAL_I2C_STATE_READY; + + if (hi2c->Mode == HAL_I2C_MODE_MEM) + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_MemTxCpltCallback(hi2c); + } + else + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_MasterTxCpltCallback(hi2c); + } + } + /* hi2c->State == HAL_I2C_STATE_BUSY_RX */ + else if(hi2c->State == HAL_I2C_STATE_BUSY_RX) + { + hi2c->State = HAL_I2C_STATE_READY; + + if (hi2c->Mode == HAL_I2C_MODE_MEM) + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + HAL_I2C_MemRxCpltCallback(hi2c); + } + else + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + HAL_I2C_MasterRxCpltCallback(hi2c); + } + } +} + +/** + * @brief I2C Slave complete process. + * @param hi2c I2C handle. + * @param ITFlags Interrupt flags to handle. + * @retval None + */ +static void I2C_ITSlaveCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags) +{ + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR); + + /* Disable all interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_TX_IT | I2C_XFER_RX_IT); + + /* Disable Address Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + + /* Clear Configuration Register 2 */ + I2C_RESET_CR2(hi2c); + + /* Flush TX register */ + I2C_Flush_TXDR(hi2c); + + /* If a DMA is ongoing, Update handle size context */ + if(((hi2c->Instance->CR1 & I2C_CR1_TXDMAEN) == I2C_CR1_TXDMAEN) || + ((hi2c->Instance->CR1 & I2C_CR1_RXDMAEN) == I2C_CR1_RXDMAEN)) + { + hi2c->XferCount = I2C_GET_DMA_REMAIN_DATA(hi2c); + } + + /* All data are not transferred, so set error code accordingly */ + if(hi2c->XferCount != 0U) + { + /* Set ErrorCode corresponding to a Non-Acknowledge */ + hi2c->ErrorCode |= HAL_I2C_ERROR_AF; + } + + /* Store Last receive data if any */ + if(((ITFlags & I2C_FLAG_RXNE) != RESET)) + { + /* Read data from RXDR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR; + + if((hi2c->XferSize > 0U)) + { + hi2c->XferSize--; + hi2c->XferCount--; + + /* Set ErrorCode corresponding to a Non-Acknowledge */ + hi2c->ErrorCode |= HAL_I2C_ERROR_AF; + } + } + + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->Mode = HAL_I2C_MODE_NONE; + hi2c->XferISR = NULL; + + if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE) + { + /* Call the corresponding callback to inform upper layer of End of Transfer */ + I2C_ITError(hi2c, hi2c->ErrorCode); + + /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */ + if(hi2c->State == HAL_I2C_STATE_LISTEN) + { + /* Call I2C Listen complete process */ + I2C_ITListenCplt(hi2c, ITFlags); + } + } + else if(hi2c->XferOptions != I2C_NO_OPTION_FRAME) + { + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */ + HAL_I2C_ListenCpltCallback(hi2c); + } + /* Call the corresponding callback to inform upper layer of End of Transfer */ + else if(hi2c->State == HAL_I2C_STATE_BUSY_RX) + { + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the Slave Rx Complete callback */ + HAL_I2C_SlaveRxCpltCallback(hi2c); + } + else + { + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the Slave Tx Complete callback */ + HAL_I2C_SlaveTxCpltCallback(hi2c); + } +} + +/** + * @brief I2C Listen complete process. + * @param hi2c I2C handle. + * @param ITFlags Interrupt flags to handle. + * @retval None + */ +static void I2C_ITListenCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags) +{ + /* Reset handle parameters */ + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + hi2c->XferISR = NULL; + + /* Store Last receive data if any */ + if(((ITFlags & I2C_FLAG_RXNE) != RESET)) + { + /* Read data from RXDR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR; + + if((hi2c->XferSize > 0U)) + { + hi2c->XferSize--; + hi2c->XferCount--; + + /* Set ErrorCode corresponding to a Non-Acknowledge */ + hi2c->ErrorCode |= HAL_I2C_ERROR_AF; + } + } + + /* Disable all Interrupts*/ + I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_RX_IT | I2C_XFER_TX_IT); + + /* Clear NACK Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */ + HAL_I2C_ListenCpltCallback(hi2c); +} + +/** + * @brief I2C interrupts error process. + * @param hi2c I2C handle. + * @param ErrorCode Error code to handle. + * @retval None + */ +static void I2C_ITError(I2C_HandleTypeDef *hi2c, uint32_t ErrorCode) +{ + /* Reset handle parameters */ + hi2c->Mode = HAL_I2C_MODE_NONE; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->XferCount = 0U; + + /* Set new error code */ + hi2c->ErrorCode |= ErrorCode; + + /* Disable Interrupts */ + if((hi2c->State == HAL_I2C_STATE_LISTEN) || + (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN) || + (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN)) + { + /* Disable all interrupts, except interrupts related to LISTEN state */ + I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT | I2C_XFER_TX_IT); + + /* keep HAL_I2C_STATE_LISTEN if set */ + hi2c->State = HAL_I2C_STATE_LISTEN; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->XferISR = I2C_Slave_ISR_IT; + } + else + { + /* Disable all interrupts */ + I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_RX_IT | I2C_XFER_TX_IT); + + /* If state is an abort treatment on goind, don't change state */ + /* This change will be do later */ + if(hi2c->State != HAL_I2C_STATE_ABORT) + { + /* Set HAL_I2C_STATE_READY */ + hi2c->State = HAL_I2C_STATE_READY; + } + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->XferISR = NULL; + } + + /* Abort DMA TX transfer if any */ + if((hi2c->Instance->CR1 & I2C_CR1_TXDMAEN) == I2C_CR1_TXDMAEN) + { + hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN; + + /* Set the I2C DMA Abort callback : + will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ + hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Abort DMA TX */ + if(HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK) + { + /* Call Directly XferAbortCallback function in case of error */ + hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx); + } + } + /* Abort DMA RX transfer if any */ + else if((hi2c->Instance->CR1 & I2C_CR1_RXDMAEN) == I2C_CR1_RXDMAEN) + { + hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN; + + /* Set the I2C DMA Abort callback : + will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ + hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Abort DMA RX */ + if(HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK) + { + /* Call Directly hi2c->hdmarx->XferAbortCallback function in case of error */ + hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx); + } + } + else if(hi2c->State == HAL_I2C_STATE_ABORT) + { + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_AbortCpltCallback(hi2c); + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_ErrorCallback(hi2c); + } +} + +/** + * @brief I2C Tx data register flush process. + * @param hi2c I2C handle. + * @retval None + */ +static void I2C_Flush_TXDR(I2C_HandleTypeDef *hi2c) +{ + /* If a pending TXIS flag is set */ + /* Write a dummy data in TXDR to clear it */ + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXIS) != RESET) + { + hi2c->Instance->TXDR = 0x00U; + } + + /* Flush TX register if not empty */ + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXE) == RESET) + { + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_TXE); + } +} + +/** + * @brief DMA I2C master transmit process complete callback. + * @param hdma DMA handle + * @retval None + */ +static void I2C_DMAMasterTransmitCplt(DMA_HandleTypeDef *hdma) +{ + I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + /* Disable DMA Request */ + hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN; + + /* If last transfer, enable STOP interrupt */ + if(hi2c->XferCount == 0U) + { + /* Enable STOP interrupt */ + I2C_Enable_IRQ(hi2c, I2C_XFER_CPLT_IT); + } + /* else prepare a new DMA transfer and enable TCReload interrupt */ + else + { + /* Update Buffer pointer */ + hi2c->pBuffPtr += hi2c->XferSize; + + /* Set the XferSize to transfer */ + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + } + + /* Enable the DMA channel */ + HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize); + + /* Enable TC interrupts */ + I2C_Enable_IRQ(hi2c, I2C_XFER_RELOAD_IT); + } +} + +/** + * @brief DMA I2C slave transmit process complete callback. + * @param hdma DMA handle + * @retval None + */ +static void I2C_DMASlaveTransmitCplt(DMA_HandleTypeDef *hdma) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdma); + + /* No specific action, Master fully manage the generation of STOP condition */ + /* Mean that this generation can arrive at any time, at the end or during DMA process */ + /* So STOP condition should be manage through Interrupt treatment */ +} + +/** + * @brief DMA I2C master receive process complete callback. + * @param hdma DMA handle + * @retval None + */ +static void I2C_DMAMasterReceiveCplt(DMA_HandleTypeDef *hdma) +{ + I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + /* Disable DMA Request */ + hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN; + + /* If last transfer, enable STOP interrupt */ + if(hi2c->XferCount == 0U) + { + /* Enable STOP interrupt */ + I2C_Enable_IRQ(hi2c, I2C_XFER_CPLT_IT); + } + /* else prepare a new DMA transfer and enable TCReload interrupt */ + else + { + /* Update Buffer pointer */ + hi2c->pBuffPtr += hi2c->XferSize; + + /* Set the XferSize to transfer */ + if(hi2c->XferCount > MAX_NBYTE_SIZE) + { + hi2c->XferSize = MAX_NBYTE_SIZE; + } + else + { + hi2c->XferSize = hi2c->XferCount; + } + + /* Enable the DMA channel */ + HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize); + + /* Enable TC interrupts */ + I2C_Enable_IRQ(hi2c, I2C_XFER_RELOAD_IT); + } +} + +/** + * @brief DMA I2C slave receive process complete callback. + * @param hdma DMA handle + * @retval None + */ +static void I2C_DMASlaveReceiveCplt(DMA_HandleTypeDef *hdma) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdma); + + /* No specific action, Master fully manage the generation of STOP condition */ + /* Mean that this generation can arrive at any time, at the end or during DMA process */ + /* So STOP condition should be manage through Interrupt treatment */ +} + +/** + * @brief DMA I2C communication error callback. + * @param hdma DMA handle + * @retval None + */ +static void I2C_DMAError(DMA_HandleTypeDef *hdma) +{ + I2C_HandleTypeDef* hi2c = ( I2C_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Disable Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + I2C_ITError(hi2c, HAL_I2C_ERROR_DMA); +} + +/** + * @brief DMA I2C communication abort callback + * (To be called at end of DMA Abort procedure). + * @param hdma: DMA handle. + * @retval None + */ +static void I2C_DMAAbort(DMA_HandleTypeDef *hdma) +{ + I2C_HandleTypeDef* hi2c = ( I2C_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Disable Acknowledge */ + hi2c->Instance->CR2 |= I2C_CR2_NACK; + + /* Reset AbortCpltCallback */ + hi2c->hdmatx->XferAbortCallback = NULL; + hi2c->hdmarx->XferAbortCallback = NULL; + + /* Check if come from abort from user */ + if(hi2c->State == HAL_I2C_STATE_ABORT) + { + hi2c->State = HAL_I2C_STATE_READY; + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_AbortCpltCallback(hi2c); + } + else + { + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_ErrorCallback(hi2c); + } +} + +/** + * @brief This function handles I2C Communication Timeout. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param Flag Specifies the I2C flag to check. + * @param Status The new Flag status (SET or RESET). + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart) +{ + while(__HAL_I2C_GET_FLAG(hi2c, Flag) == Status) + { + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout)) + { + hi2c->State= HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + } + return HAL_OK; +} + +/** + * @brief This function handles I2C Communication Timeout for specific usage of TXIS flag. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnTXISFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) +{ + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXIS) == RESET) + { + /* Check if a NACK is detected */ + if(I2C_IsAcknowledgeFailed(hi2c, Timeout, Tickstart) != HAL_OK) + { + return HAL_ERROR; + } + + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U)||((HAL_GetTick() - Tickstart) > Timeout)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; + hi2c->State= HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + } + return HAL_OK; +} + +/** + * @brief This function handles I2C Communication Timeout for specific usage of STOP flag. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) +{ + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET) + { + /* Check if a NACK is detected */ + if(I2C_IsAcknowledgeFailed(hi2c, Timeout, Tickstart) != HAL_OK) + { + return HAL_ERROR; + } + + /* Check for the Timeout */ + if((Timeout == 0U)||((HAL_GetTick() - Tickstart) > Timeout)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; + hi2c->State= HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + return HAL_OK; +} + +/** + * @brief This function handles I2C Communication Timeout for specific usage of RXNE flag. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) +{ + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == RESET) + { + /* Check if a NACK is detected */ + if(I2C_IsAcknowledgeFailed(hi2c, Timeout, Tickstart) != HAL_OK) + { + return HAL_ERROR; + } + + /* Check if a STOPF is detected */ + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET) + { + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + /* Clear Configuration Register 2 */ + I2C_RESET_CR2(hi2c); + + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->State= HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_ERROR; + } + + /* Check for the Timeout */ + if((Timeout == 0U)||((HAL_GetTick() - Tickstart) > Timeout)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + return HAL_OK; +} + +/** + * @brief This function handles Acknowledge failed detection during an I2C Communication. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) +{ + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET) + { + /* Wait until STOP Flag is reset */ + /* AutoEnd should be initiate after AF */ + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET) + { + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U)||((HAL_GetTick() - Tickstart) > Timeout)) + { + hi2c->State= HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + } + + /* Clear NACKF Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + /* Flush TX register */ + I2C_Flush_TXDR(hi2c); + + /* Clear Configuration Register 2 */ + I2C_RESET_CR2(hi2c); + + hi2c->ErrorCode = HAL_I2C_ERROR_AF; + hi2c->State= HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_ERROR; + } + return HAL_OK; +} + +/** + * @brief Handles I2Cx communication when starting transfer or during transfer (TC or TCR flag are set). + * @param hi2c I2C handle. + * @param DevAddress Specifies the slave address to be programmed. + * @param Size Specifies the number of bytes to be programmed. + * This parameter must be a value between 0 and 255. + * @param Mode New state of the I2C START condition generation. + * This parameter can be one of the following values: + * @arg @ref I2C_RELOAD_MODE Enable Reload mode . + * @arg @ref I2C_AUTOEND_MODE Enable Automatic end mode. + * @arg @ref I2C_SOFTEND_MODE Enable Software end mode. + * @param Request New state of the I2C START condition generation. + * This parameter can be one of the following values: + * @arg @ref I2C_NO_STARTSTOP Don't Generate stop and start condition. + * @arg @ref I2C_GENERATE_STOP Generate stop condition (Size should be set to 0). + * @arg @ref I2C_GENERATE_START_READ Generate Restart for read request. + * @arg @ref I2C_GENERATE_START_WRITE Generate Restart for write request. + * @retval None + */ +static void I2C_TransferConfig(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request) +{ + uint32_t tmpreg = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance)); + assert_param(IS_TRANSFER_MODE(Mode)); + assert_param(IS_TRANSFER_REQUEST(Request)); + + /* Get the CR2 register value */ + tmpreg = hi2c->Instance->CR2; + + /* clear tmpreg specific bits */ + tmpreg &= (uint32_t)~((uint32_t)(I2C_CR2_SADD | I2C_CR2_NBYTES | I2C_CR2_RELOAD | I2C_CR2_AUTOEND | I2C_CR2_RD_WRN | I2C_CR2_START | I2C_CR2_STOP)); + + /* update tmpreg */ + tmpreg |= (uint32_t)(((uint32_t)DevAddress & I2C_CR2_SADD) | (((uint32_t)Size << 16 ) & I2C_CR2_NBYTES) | \ + (uint32_t)Mode | (uint32_t)Request); + + /* update CR2 register */ + hi2c->Instance->CR2 = tmpreg; +} + +/** + * @brief Manage the enabling of Interrupts. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param InterruptRequest Value of @ref I2C_Interrupt_configuration_definition. + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Enable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest) +{ + uint32_t tmpisr = 0U; + + if((hi2c->XferISR == I2C_Master_ISR_DMA) || \ + (hi2c->XferISR == I2C_Slave_ISR_DMA)) + { + if((InterruptRequest & I2C_XFER_LISTEN_IT) == I2C_XFER_LISTEN_IT) + { + /* Enable ERR, STOP, NACK and ADDR interrupts */ + tmpisr |= I2C_IT_ADDRI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI; + } + + if((InterruptRequest & I2C_XFER_ERROR_IT) == I2C_XFER_ERROR_IT) + { + /* Enable ERR and NACK interrupts */ + tmpisr |= I2C_IT_ERRI | I2C_IT_NACKI; + } + + if((InterruptRequest & I2C_XFER_CPLT_IT) == I2C_XFER_CPLT_IT) + { + /* Enable STOP interrupts */ + tmpisr |= I2C_IT_STOPI; + } + + if((InterruptRequest & I2C_XFER_RELOAD_IT) == I2C_XFER_RELOAD_IT) + { + /* Enable TC interrupts */ + tmpisr |= I2C_IT_TCI; + } + } + else + { + if((InterruptRequest & I2C_XFER_LISTEN_IT) == I2C_XFER_LISTEN_IT) + { + /* Enable ERR, STOP, NACK, and ADDR interrupts */ + tmpisr |= I2C_IT_ADDRI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI; + } + + if((InterruptRequest & I2C_XFER_TX_IT) == I2C_XFER_TX_IT) + { + /* Enable ERR, TC, STOP, NACK and RXI interrupts */ + tmpisr |= I2C_IT_ERRI | I2C_IT_TCI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_TXI; + } + + if((InterruptRequest & I2C_XFER_RX_IT) == I2C_XFER_RX_IT) + { + /* Enable ERR, TC, STOP, NACK and TXI interrupts */ + tmpisr |= I2C_IT_ERRI | I2C_IT_TCI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_RXI; + } + + if((InterruptRequest & I2C_XFER_CPLT_IT) == I2C_XFER_CPLT_IT) + { + /* Enable STOP interrupts */ + tmpisr |= I2C_IT_STOPI; + } + } + + /* Enable interrupts only at the end */ + /* to avoid the risk of I2C interrupt handle execution before */ + /* all interrupts requested done */ + __HAL_I2C_ENABLE_IT(hi2c, tmpisr); + + return HAL_OK; +} + +/** + * @brief Manage the disabling of Interrupts. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param InterruptRequest Value of @ref I2C_Interrupt_configuration_definition. + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Disable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest) +{ + uint32_t tmpisr = 0U; + + if((InterruptRequest & I2C_XFER_TX_IT) == I2C_XFER_TX_IT) + { + /* Disable TC and TXI interrupts */ + tmpisr |= I2C_IT_TCI | I2C_IT_TXI; + + if((hi2c->State & HAL_I2C_STATE_LISTEN) != HAL_I2C_STATE_LISTEN) + { + /* Disable NACK and STOP interrupts */ + tmpisr |= I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI; + } + } + + if((InterruptRequest & I2C_XFER_RX_IT) == I2C_XFER_RX_IT) + { + /* Disable TC and RXI interrupts */ + tmpisr |= I2C_IT_TCI | I2C_IT_RXI; + + if((hi2c->State & HAL_I2C_STATE_LISTEN) != HAL_I2C_STATE_LISTEN) + { + /* Disable NACK and STOP interrupts */ + tmpisr |= I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI; + } + } + + if((InterruptRequest & I2C_XFER_LISTEN_IT) == I2C_XFER_LISTEN_IT) + { + /* Disable ADDR, NACK and STOP interrupts */ + tmpisr |= I2C_IT_ADDRI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI; + } + + if((InterruptRequest & I2C_XFER_ERROR_IT) == I2C_XFER_ERROR_IT) + { + /* Enable ERR and NACK interrupts */ + tmpisr |= I2C_IT_ERRI | I2C_IT_NACKI; + } + + if((InterruptRequest & I2C_XFER_CPLT_IT) == I2C_XFER_CPLT_IT) + { + /* Enable STOP interrupts */ + tmpisr |= I2C_IT_STOPI; + } + + if((InterruptRequest & I2C_XFER_RELOAD_IT) == I2C_XFER_RELOAD_IT) + { + /* Enable TC interrupts */ + tmpisr |= I2C_IT_TCI; + } + + /* Disable interrupts only at the end */ + /* to avoid a breaking situation like at "t" time */ + /* all disable interrupts request are not done */ + __HAL_I2C_DISABLE_IT(hi2c, tmpisr); + + return HAL_OK; +} + +/** + * @} + */ + +#endif /* HAL_I2C_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/