1 | /**
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2 | ******************************************************************************
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3 | * @file : main.c
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4 | * @brief : Main program body
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5 | ******************************************************************************
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6 | ** This notice applies to any and all portions of this file
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7 | * that are not between comment pairs USER CODE BEGIN and
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8 | * USER CODE END. Other portions of this file, whether
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9 | * inserted by the user or by software development tools
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10 | * are owned by their respective copyright owners.
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11 | *
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12 | * COPYRIGHT(c) 2018 STMicroelectronics
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13 | *
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14 | * Redistribution and use in source and binary forms, with or without modification,
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15 | * are permitted provided that the following conditions are met:
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16 | * 1. Redistributions of source code must retain the above copyright notice,
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17 | * this list of conditions and the following disclaimer.
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18 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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19 | * this list of conditions and the following disclaimer in the documentation
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20 | * and/or other materials provided with the distribution.
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21 | * 3. Neither the name of STMicroelectronics nor the names of its contributors
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22 | * may be used to endorse or promote products derived from this software
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23 | * without specific prior written permission.
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24 | *
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25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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26 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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28 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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31 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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32 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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33 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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34 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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35 | *
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36 | ******************************************************************************
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37 | */
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38 | /* Includes ------------------------------------------------------------------*/
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39 | #include "main.h"
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40 | #include "stm32l4xx_hal.h"
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41 |
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42 | /* USER CODE BEGIN Includes */
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43 |
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44 | /* USER CODE END Includes */
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45 |
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46 | /* Private variables ---------------------------------------------------------*/
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47 | I2C_HandleTypeDef hi2c1;
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48 |
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49 | UART_HandleTypeDef huart2;
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50 |
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51 | /* USER CODE BEGIN PV */
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52 | /* Private variables ---------------------------------------------------------*/
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53 |
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54 | /* USER CODE END PV */
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55 |
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56 | /* Private function prototypes -----------------------------------------------*/
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57 | void SystemClock_Config(void);
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58 | static void MX_GPIO_Init(void);
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59 | static void MX_USART2_UART_Init(void);
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60 | static void MX_I2C1_Init(void);
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61 |
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62 | /* USER CODE BEGIN PFP */
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63 | /* Private function prototypes -----------------------------------------------*/
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64 |
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65 | /* USER CODE END PFP */
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66 |
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67 | /* USER CODE BEGIN 0 */
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68 |
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69 | /* USER CODE END 0 */
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70 |
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71 | /**
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72 | * @brief The application entry point.
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73 | *
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74 | * @retval None
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75 | */
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76 | int main(void)
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77 | {
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78 | /* USER CODE BEGIN 1 */
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79 |
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80 | /* USER CODE END 1 */
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81 |
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82 | /* MCU Configuration----------------------------------------------------------*/
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83 |
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84 | /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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85 | HAL_Init();
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86 |
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87 | /* USER CODE BEGIN Init */
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88 |
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89 | /* USER CODE END Init */
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90 |
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91 | /* Configure the system clock */
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92 | SystemClock_Config();
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93 |
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94 | /* USER CODE BEGIN SysInit */
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95 |
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96 | /* USER CODE END SysInit */
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97 |
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98 | /* Initialize all configured peripherals */
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99 | MX_GPIO_Init();
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100 | MX_USART2_UART_Init();
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101 | MX_I2C1_Init();
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102 | /* USER CODE BEGIN 2 */
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103 |
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104 | /* USER CODE END 2 */
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105 |
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106 | /* Infinite loop */
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107 | /* USER CODE BEGIN WHILE */
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108 | while (1)
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109 | {
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110 | HAL_GPIO_TogglePin(GPIOA,LD2_Pin);
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111 | HAL_Delay(500);
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112 | /* USER CODE END WHILE */
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113 |
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114 | /* USER CODE BEGIN 3 */
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115 |
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116 | }
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117 | /* USER CODE END 3 */
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118 |
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119 | }
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120 |
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121 | /**
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122 | * @brief System Clock Configuration
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123 | * @retval None
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124 | */
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125 | void SystemClock_Config(void)
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126 | {
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127 |
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128 | RCC_OscInitTypeDef RCC_OscInitStruct;
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129 | RCC_ClkInitTypeDef RCC_ClkInitStruct;
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130 | RCC_PeriphCLKInitTypeDef PeriphClkInit;
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131 |
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132 | /**Initializes the CPU, AHB and APB busses clocks
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133 | */
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134 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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135 | RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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136 | RCC_OscInitStruct.HSICalibrationValue = 16;
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137 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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138 | RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
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139 | RCC_OscInitStruct.PLL.PLLM = 1;
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140 | RCC_OscInitStruct.PLL.PLLN = 10;
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141 | RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
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142 | RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
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143 | RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
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144 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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145 | {
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146 | _Error_Handler(__FILE__, __LINE__);
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147 | }
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148 |
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149 | /**Initializes the CPU, AHB and APB busses clocks
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150 | */
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151 | RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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152 | |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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153 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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154 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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155 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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156 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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157 |
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158 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
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159 | {
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160 | _Error_Handler(__FILE__, __LINE__);
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161 | }
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162 |
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163 | PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2|RCC_PERIPHCLK_I2C1;
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164 | PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
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165 | PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1;
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166 | if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
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167 | {
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168 | _Error_Handler(__FILE__, __LINE__);
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169 | }
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170 |
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171 | /**Configure the main internal regulator output voltage
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172 | */
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173 | if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
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174 | {
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175 | _Error_Handler(__FILE__, __LINE__);
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176 | }
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177 |
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178 | /**Configure the Systick interrupt time
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179 | */
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180 | HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
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181 |
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182 | /**Configure the Systick
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183 | */
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184 | HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
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185 |
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186 | /* SysTick_IRQn interrupt configuration */
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187 | HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
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188 | }
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189 |
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190 | /* I2C1 init function */
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191 | static void MX_I2C1_Init(void)
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192 | {
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193 |
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194 | hi2c1.Instance = I2C1;
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195 | hi2c1.Init.Timing = 0x10909CEC;
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196 | hi2c1.Init.OwnAddress1 = 8;
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197 | hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
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198 | hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
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199 | hi2c1.Init.OwnAddress2 = 0;
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200 | hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
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201 | hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_ENABLE;
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202 | hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_ENABLE;
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203 | if (HAL_I2C_Init(&hi2c1) != HAL_OK)
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204 | {
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205 | _Error_Handler(__FILE__, __LINE__);
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206 | }
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207 |
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208 | /**Configure Analogue filter
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209 | */
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210 | if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
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211 | {
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212 | _Error_Handler(__FILE__, __LINE__);
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213 | }
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214 |
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215 | /**Configure Digital filter
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216 | */
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217 | if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
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218 | {
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219 | _Error_Handler(__FILE__, __LINE__);
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220 | }
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221 |
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222 | }
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223 |
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224 | /* USART2 init function */
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225 | static void MX_USART2_UART_Init(void)
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226 | {
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227 |
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228 | huart2.Instance = USART2;
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229 | huart2.Init.BaudRate = 115200;
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230 | huart2.Init.WordLength = UART_WORDLENGTH_8B;
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231 | huart2.Init.StopBits = UART_STOPBITS_1;
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232 | huart2.Init.Parity = UART_PARITY_NONE;
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233 | huart2.Init.Mode = UART_MODE_TX_RX;
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234 | huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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235 | huart2.Init.OverSampling = UART_OVERSAMPLING_16;
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236 | huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
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237 | huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
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238 | if (HAL_UART_Init(&huart2) != HAL_OK)
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239 | {
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240 | _Error_Handler(__FILE__, __LINE__);
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241 | }
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242 |
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243 | }
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244 |
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245 | /** Configure pins as
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246 | * Analog
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247 | * Input
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248 | * Output
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249 | * EVENT_OUT
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250 | * EXTI
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251 | */
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252 | static void MX_GPIO_Init(void)
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253 | {
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254 |
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255 | GPIO_InitTypeDef GPIO_InitStruct;
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256 |
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257 | /* GPIO Ports Clock Enable */
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258 | __HAL_RCC_GPIOC_CLK_ENABLE();
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259 | __HAL_RCC_GPIOH_CLK_ENABLE();
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260 | __HAL_RCC_GPIOA_CLK_ENABLE();
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261 | __HAL_RCC_GPIOB_CLK_ENABLE();
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262 |
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263 | /*Configure GPIO pin Output Level */
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264 | HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
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265 |
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266 | /*Configure GPIO pin Output Level */
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267 | HAL_GPIO_WritePin(D6_GPIO_Port, D6_Pin, GPIO_PIN_RESET);
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268 |
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269 | /*Configure GPIO pin : B1_Pin */
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270 | GPIO_InitStruct.Pin = B1_Pin;
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271 | GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
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272 | GPIO_InitStruct.Pull = GPIO_NOPULL;
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273 | HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);
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274 |
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275 | /*Configure GPIO pin : LD2_Pin */
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276 | GPIO_InitStruct.Pin = LD2_Pin;
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277 | GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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278 | GPIO_InitStruct.Pull = GPIO_NOPULL;
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279 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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280 | HAL_GPIO_Init(LD2_GPIO_Port, &GPIO_InitStruct);
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281 |
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282 | /*Configure GPIO pin : D6_Pin */
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283 | GPIO_InitStruct.Pin = D6_Pin;
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284 | GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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285 | GPIO_InitStruct.Pull = GPIO_NOPULL;
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286 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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287 | HAL_GPIO_Init(D6_GPIO_Port, &GPIO_InitStruct);
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288 |
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289 | }
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290 |
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291 | /* USER CODE BEGIN 4 */
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292 | void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c1)
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293 | {
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294 | /* Toggle LED2: Transfer in reception process is correct */
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295 | HAL_GPIO_TogglePin(GPIOB,D6_Pin);
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296 | }
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297 | /* USER CODE END 4 */
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298 |
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299 | /**
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300 | * @brief This function is executed in case of error occurrence.
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301 | * @param file: The file name as string.
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302 | * @param line: The line in file as a number.
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303 | * @retval None
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304 | */
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305 | void _Error_Handler(char *file, int line)
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306 | {
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307 | /* USER CODE BEGIN Error_Handler_Debug */
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308 | /* User can add his own implementation to report the HAL error return state */
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309 | while(1)
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310 | {
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311 | HAL_GPIO_TogglePin(GPIOB,D6_Pin);
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312 | HAL_Delay(500);
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313 | }
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314 | /* USER CODE END Error_Handler_Debug */
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315 | }
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316 |
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317 | #ifdef USE_FULL_ASSERT
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318 | /**
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319 | * @brief Reports the name of the source file and the source line number
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320 | * where the assert_param error has occurred.
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321 | * @param file: pointer to the source file name
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322 | * @param line: assert_param error line source number
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323 | * @retval None
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324 | */
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325 | void assert_failed(uint8_t* file, uint32_t line)
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326 | {
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327 | /* USER CODE BEGIN 6 */
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328 | /* User can add his own implementation to report the file name and line number,
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329 | tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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330 | /* USER CODE END 6 */
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331 | }
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332 | #endif /* USE_FULL_ASSERT */
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333 |
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334 | /**
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335 | * @}
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336 | */
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337 |
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338 | /**
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339 | * @}
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340 | */
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341 |
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342 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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