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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 "usart.h"
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37 #include "gpio.h"
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38
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39 /* USER CODE BEGIN Includes */
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40
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41 /* USER CODE END Includes */
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42
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43 /* Private variables ---------------------------------------------------------*/
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44
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45 /* USER CODE BEGIN PV */
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46 /* Private variables ---------------------------------------------------------*/
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47
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48 /* USER CODE END PV */
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49
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50 /* Private function prototypes -----------------------------------------------*/
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51 void SystemClock_Config(void);
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52 void Error_Handler(void);
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53
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54 /* USER CODE BEGIN PFP */
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55 /* Private function prototypes -----------------------------------------------*/
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56
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57 /* USER CODE END PFP */
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58
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59 /* USER CODE BEGIN 0 */
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60
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61 /* USER CODE END 0 */
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62
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63 int main(void)
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64 {
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65
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66 /* USER CODE BEGIN 1 */
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67
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68 /* USER CODE END 1 */
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69
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70 /* MCU Configuration----------------------------------------------------------*/
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71
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72 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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73 HAL_Init();
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74
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75 /* Configure the system clock */
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76 SystemClock_Config();
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77
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78 /* Initialize all configured peripherals */
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79 MX_GPIO_Init();
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80 MX_USART2_UART_Init();
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81
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82 /* USER CODE BEGIN 2 */
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83
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84 /* USER CODE END 2 */
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85
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86 /* Infinite loop */
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87 /* USER CODE BEGIN WHILE */
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88 while (1)
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89 {
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90 /* USER CODE END WHILE */
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91
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92 /* USER CODE BEGIN 3 */
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93
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94 }
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95 /* USER CODE END 3 */
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96
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97 }
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98
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99 /** System Clock Configuration
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100 */
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101 void SystemClock_Config(void)
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102 {
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103
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104 RCC_OscInitTypeDef RCC_OscInitStruct;
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105 RCC_ClkInitTypeDef RCC_ClkInitStruct;
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106 RCC_PeriphCLKInitTypeDef PeriphClkInit;
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107
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108 /**Initializes the CPU, AHB and APB busses clocks
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109 */
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110 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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111 RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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112 RCC_OscInitStruct.HSICalibrationValue = 16;
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113 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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114 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
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115 RCC_OscInitStruct.PLL.PLLM = 1;
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116 RCC_OscInitStruct.PLL.PLLN = 10;
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117 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
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118 RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
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119 RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
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120 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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121 {
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122 Error_Handler();
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123 }
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124
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125 /**Initializes the CPU, AHB and APB busses clocks
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126 */
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127 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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128 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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129 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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130 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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131 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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132 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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133
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134 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
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135 {
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136 Error_Handler();
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137 }
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138
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139 PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2;
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140 PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
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141 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
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142 {
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143 Error_Handler();
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144 }
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145
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146 /**Configure the main internal regulator output voltage
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147 */
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148 if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
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149 {
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150 Error_Handler();
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151 }
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152
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153 /**Configure the Systick interrupt time
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154 */
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155 HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
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156
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157 /**Configure the Systick
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158 */
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159 HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
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160
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161 /* SysTick_IRQn interrupt configuration */
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162 HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
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163 }
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164
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165 /* USER CODE BEGIN 4 */
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166
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167 /* USER CODE END 4 */
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168
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169 /**
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170 * @brief Period elapsed callback in non blocking mode
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171 * @note This function is called when TIM6 interrupt took place, inside
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172 * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
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173 * a global variable "uwTick" used as application time base.
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174 * @param htim : TIM handle
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175 * @retval None
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176 */
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177 void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
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178 {
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179 /* USER CODE BEGIN Callback 0 */
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180
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181 /* USER CODE END Callback 0 */
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182 if (htim->Instance == TIM6) {
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183 HAL_IncTick();
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184 }
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185 /* USER CODE BEGIN Callback 1 */
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186
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187 /* USER CODE END Callback 1 */
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188 }
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189
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190 /**
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191 * @brief This function is executed in case of error occurrence.
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192 * @param None
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193 * @retval None
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194 */
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195 void Error_Handler(void)
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196 {
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197 /* USER CODE BEGIN Error_Handler */
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198 /* User can add his own implementation to report the HAL error return state */
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199 while(1)
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200 {
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201 }
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202 /* USER CODE END Error_Handler */
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203 }
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204
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205 #ifdef USE_FULL_ASSERT
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206
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207 /**
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208 * @brief Reports the name of the source file and the source line number
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209 * where the assert_param error has occurred.
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210 * @param file: pointer to the source file name
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211 * @param line: assert_param error line source number
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212 * @retval None
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213 */
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214 void assert_failed(uint8_t* file, uint32_t line)
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215 {
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216 /* USER CODE BEGIN 6 */
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217 /* User can add his own implementation to report the file name and line number,
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218 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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219 /* USER CODE END 6 */
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220
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221 }
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222
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223 #endif
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224
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225 /**
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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 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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