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1 /**
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2 ******************************************************************************
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3 * File Name : main.c
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4 * Description : Main program body
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5 ******************************************************************************
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6 *
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7 * COPYRIGHT(c) 2017 STMicroelectronics
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8 *
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9 * Redistribution and use in source and binary forms, with or without modification,
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10 * are permitted provided that the following conditions are met:
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11 * 1. Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the following disclaimer.
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13 * 2. Redistributions in binary form must reproduce the above copyright notice,
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14 * this list of conditions and the following disclaimer in the documentation
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15 * and/or other materials provided with the distribution.
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16 * 3. Neither the name of STMicroelectronics nor the names of its contributors
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17 * may be used to endorse or promote products derived from this software
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18 * without specific prior written permission.
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19 *
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20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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30 *
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31 ******************************************************************************
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32 */
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33 /* Includes ------------------------------------------------------------------*/
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34 #include "main.h"
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35 #include "stm32l4xx_hal.h"
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36 #include "tim.h"
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37 #include "usart.h"
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38 #include "gpio.h"
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39
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40 /* USER CODE BEGIN Includes */
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41
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42 /* USER CODE END Includes */
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43
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44 /* Private variables ---------------------------------------------------------*/
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45
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46 /* USER CODE BEGIN PV */
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47 /* Private variables ---------------------------------------------------------*/
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48
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49 /* USER CODE END PV */
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50
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51 /* Private function prototypes -----------------------------------------------*/
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52 void SystemClock_Config(void);
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53 void Error_Handler(void);
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54
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55 /* USER CODE BEGIN PFP */
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56 /* Private function prototypes -----------------------------------------------*/
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57
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58 /* USER CODE END PFP */
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59
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60 /* USER CODE BEGIN 0 */
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61
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62 /* USER CODE END 0 */
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63
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64 int main(void)
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65 {
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66
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67 /* USER CODE BEGIN 1 */
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68
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69 /* USER CODE END 1 */
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70
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71 /* MCU Configuration----------------------------------------------------------*/
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72
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73 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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74 HAL_Init();
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75
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76 /* Configure the system clock */
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77 SystemClock_Config();
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78
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79 /* Initialize all configured peripherals */
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80 MX_GPIO_Init();
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81 MX_USART2_UART_Init();
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82 MX_TIM2_Init();
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83
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84 /* USER CODE BEGIN 2 */
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85
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86 /* USER CODE END 2 */
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87
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88 /* Infinite loop */
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89 /* USER CODE BEGIN WHILE */
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90 while (1)
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91 {
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92 /* USER CODE END WHILE */
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93
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94 /* USER CODE BEGIN 3 */
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95
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96 }
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97 /* USER CODE END 3 */
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98
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99 }
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100
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101 /** System Clock Configuration
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102 */
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103 void SystemClock_Config(void)
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104 {
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105
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106 RCC_OscInitTypeDef RCC_OscInitStruct;
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107 RCC_ClkInitTypeDef RCC_ClkInitStruct;
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108 RCC_PeriphCLKInitTypeDef PeriphClkInit;
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109
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110 /**Initializes the CPU, AHB and APB busses clocks
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111 */
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112 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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113 RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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114 RCC_OscInitStruct.HSICalibrationValue = 16;
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115 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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116 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
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117 RCC_OscInitStruct.PLL.PLLM = 1;
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118 RCC_OscInitStruct.PLL.PLLN = 10;
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119 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
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120 RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
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121 RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
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122 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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123 {
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124 Error_Handler();
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125 }
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126
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127 /**Initializes the CPU, AHB and APB busses clocks
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128 */
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129 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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130 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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131 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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132 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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133 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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134 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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135
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136 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
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137 {
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138 Error_Handler();
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139 }
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140
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141 PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2;
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142 PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
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143 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
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144 {
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145 Error_Handler();
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146 }
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147
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148 /**Configure the main internal regulator output voltage
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149 */
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150 if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
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151 {
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152 Error_Handler();
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153 }
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154
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155 /**Configure the Systick interrupt time
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156 */
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157 HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
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158
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159 /**Configure the Systick
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160 */
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161 HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
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162
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163 /* SysTick_IRQn interrupt configuration */
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164 HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
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165 }
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166
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167 /* USER CODE BEGIN 4 */
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168
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169 /* USER CODE END 4 */
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170
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171 /**
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172 * @brief Period elapsed callback in non blocking mode
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173 * @note This function is called when TIM6 interrupt took place, inside
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174 * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
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175 * a global variable "uwTick" used as application time base.
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176 * @param htim : TIM handle
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177 * @retval None
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178 */
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179 void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
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180 {
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181 /* USER CODE BEGIN Callback 0 */
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182
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183 /* USER CODE END Callback 0 */
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184 if (htim->Instance == TIM6) {
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185 HAL_IncTick();
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186 }
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187 /* USER CODE BEGIN Callback 1 */
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188
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189 /* USER CODE END Callback 1 */
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190 }
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191
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192 /**
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193 * @brief This function is executed in case of error occurrence.
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194 * @param None
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195 * @retval None
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196 */
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197 void Error_Handler(void)
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198 {
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199 /* USER CODE BEGIN Error_Handler */
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200 /* User can add his own implementation to report the HAL error return state */
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201 while(1)
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202 {
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203 }
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204 /* USER CODE END Error_Handler */
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205 }
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206
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207 #ifdef USE_FULL_ASSERT
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208
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209 /**
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210 * @brief Reports the name of the source file and the source line number
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211 * where the assert_param error has occurred.
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212 * @param file: pointer to the source file name
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213 * @param line: assert_param error line source number
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214 * @retval None
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215 */
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216 void assert_failed(uint8_t* file, uint32_t line)
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217 {
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218 /* USER CODE BEGIN 6 */
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219 /* User can add his own implementation to report the file name and line number,
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220 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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221 /* USER CODE END 6 */
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222
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223 }
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224
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225 #endif
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226
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227 /**
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228 * @}
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229 */
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230
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231 /**
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232 * @}
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233 */
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234
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235 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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