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1 /**
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2 ******************************************************************************
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3 * @file stm32f1xx_hal_gpio_ex.c
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4 * @author MCD Application Team
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5 * @version V1.0.4
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6 * @date 29-April-2016
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7 * @brief GPIO Extension HAL module driver.
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8 * This file provides firmware functions to manage the following
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9 * functionalities of the General Purpose Input/Output (GPIO) extension peripheral.
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10 * + Extended features functions
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11 *
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12 @verbatim
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13 ==============================================================================
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14 ##### GPIO Peripheral extension features #####
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15 ==============================================================================
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16 [..] GPIO module on STM32F1 family, manage also the AFIO register:
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17 (+) Possibility to use the EVENTOUT Cortex feature
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18
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19 ##### How to use this driver #####
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20 ==============================================================================
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21 [..] This driver provides functions to use EVENTOUT Cortex feature
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22 (#) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout()
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23 (#) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout()
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24 (#) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout()
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25
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26 @endverbatim
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27 ******************************************************************************
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28 * @attention
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29 *
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30 * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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31 *
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32 * Redistribution and use in source and binary forms, with or without modification,
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33 * are permitted provided that the following conditions are met:
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34 * 1. Redistributions of source code must retain the above copyright notice,
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35 * this list of conditions and the following disclaimer.
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36 * 2. Redistributions in binary form must reproduce the above copyright notice,
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37 * this list of conditions and the following disclaimer in the documentation
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38 * and/or other materials provided with the distribution.
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39 * 3. Neither the name of STMicroelectronics nor the names of its contributors
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40 * may be used to endorse or promote products derived from this software
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41 * without specific prior written permission.
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42 *
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43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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44 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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46 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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49 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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50 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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51 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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52 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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53 *
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54 ******************************************************************************
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55 */
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56
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57 /* Includes ------------------------------------------------------------------*/
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58 #include "stm32f1xx_hal.h"
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59
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60 /** @addtogroup STM32F1xx_HAL_Driver
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61 * @{
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62 */
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63
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64 /** @defgroup GPIOEx GPIOEx
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65 * @brief GPIO HAL module driver
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66 * @{
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67 */
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68
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69 #ifdef HAL_GPIO_MODULE_ENABLED
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70
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71 /** @defgroup GPIOEx_Exported_Functions GPIOEx Exported Functions
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72 * @{
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73 */
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74
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75 /** @defgroup GPIOEx_Exported_Functions_Group1 Extended features functions
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76 * @brief Extended features functions
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77 *
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78 @verbatim
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79 ==============================================================================
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80 ##### Extended features functions #####
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81 ==============================================================================
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82 [..] This section provides functions allowing to:
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83 (+) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout()
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84 (+) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout()
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85 (+) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout()
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86
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87 @endverbatim
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88 * @{
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89 */
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90
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91 /**
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92 * @brief Configures the port and pin on which the EVENTOUT Cortex signal will be connected.
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93 * @param GPIO_PortSource Select the port used to output the Cortex EVENTOUT signal.
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94 * This parameter can be a value of @ref GPIOEx_EVENTOUT_PORT.
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95 * @param GPIO_PinSource Select the pin used to output the Cortex EVENTOUT signal.
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96 * This parameter can be a value of @ref GPIOEx_EVENTOUT_PIN.
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97 * @retval None
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98 */
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99 void HAL_GPIOEx_ConfigEventout(uint32_t GPIO_PortSource, uint32_t GPIO_PinSource)
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100 {
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101 /* Verify the parameters */
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102 assert_param(IS_AFIO_EVENTOUT_PORT(GPIO_PortSource));
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103 assert_param(IS_AFIO_EVENTOUT_PIN(GPIO_PinSource));
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104
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105 /* Apply the new configuration */
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106 MODIFY_REG(AFIO->EVCR, (AFIO_EVCR_PORT)|(AFIO_EVCR_PIN), (GPIO_PortSource)|(GPIO_PinSource));
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107 }
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108
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109 /**
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110 * @brief Enables the Event Output.
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111 * @retval None
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112 */
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113 void HAL_GPIOEx_EnableEventout(void)
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114 {
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115 SET_BIT(AFIO->EVCR, AFIO_EVCR_EVOE);
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116 }
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117
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118 /**
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119 * @brief Disables the Event Output.
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120 * @retval None
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121 */
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122 void HAL_GPIOEx_DisableEventout(void)
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123 {
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124 CLEAR_BIT(AFIO->EVCR, AFIO_EVCR_EVOE);
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125 }
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126
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127 /**
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128 * @}
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129 */
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130
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131 /**
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132 * @}
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133 */
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134
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135 #endif /* HAL_GPIO_MODULE_ENABLED */
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136
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137 /**
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138 * @}
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139 */
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140
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141 /**
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142 * @}
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143 */
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144
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145 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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