main.c 6.7 KB

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  1. /* USER CODE BEGIN Header */
  2. /**
  3. ******************************************************************************
  4. * @file : main.c
  5. * @brief : Main program body
  6. ******************************************************************************
  7. * @attention
  8. *
  9. * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  10. * All rights reserved.</center></h2>
  11. *
  12. * This software component is licensed by ST under BSD 3-Clause license,
  13. * the "License"; You may not use this file except in compliance with the
  14. * License. You may obtain a copy of the License at:
  15. * opensource.org/licenses/BSD-3-Clause
  16. *
  17. ******************************************************************************
  18. */
  19. /* USER CODE END Header */
  20. /* Includes ------------------------------------------------------------------*/
  21. #include "main.h"
  22. /* Private includes ----------------------------------------------------------*/
  23. /* USER CODE BEGIN Includes */
  24. /* USER CODE END Includes */
  25. /* Private typedef -----------------------------------------------------------*/
  26. /* USER CODE BEGIN PTD */
  27. /* USER CODE END PTD */
  28. /* Private define ------------------------------------------------------------*/
  29. /* USER CODE BEGIN PD */
  30. /* USER CODE END PD */
  31. /* Private macro -------------------------------------------------------------*/
  32. /* USER CODE BEGIN PM */
  33. /* USER CODE END PM */
  34. /* Private variables ---------------------------------------------------------*/
  35. UART_HandleTypeDef huart2;
  36. /* USER CODE BEGIN PV */
  37. /* USER CODE END PV */
  38. /* Private function prototypes -----------------------------------------------*/
  39. void SystemClock_Config(void);
  40. static void MX_GPIO_Init(void);
  41. static void MX_USART2_UART_Init(void);
  42. /* USER CODE BEGIN PFP */
  43. /* USER CODE END PFP */
  44. /* Private user code ---------------------------------------------------------*/
  45. /* USER CODE BEGIN 0 */
  46. /* USER CODE END 0 */
  47. /**
  48. * @brief The application entry point.
  49. * @retval int
  50. */
  51. int main(void)
  52. {
  53. /* USER CODE BEGIN 1 */
  54. /* USER CODE END 1 */
  55. /* MCU Configuration--------------------------------------------------------*/
  56. /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  57. HAL_Init();
  58. /* USER CODE BEGIN Init */
  59. /* USER CODE END Init */
  60. /* Configure the system clock */
  61. SystemClock_Config();
  62. /* USER CODE BEGIN SysInit */
  63. /* USER CODE END SysInit */
  64. /* Initialize all configured peripherals */
  65. MX_GPIO_Init();
  66. MX_USART2_UART_Init();
  67. /* USER CODE BEGIN 2 */
  68. /* USER CODE END 2 */
  69. /* Infinite loop */
  70. /* USER CODE BEGIN WHILE */
  71. while (1)
  72. {
  73. /* USER CODE END WHILE */
  74. /* USER CODE BEGIN 3 */
  75. }
  76. /* USER CODE END 3 */
  77. }
  78. /**
  79. * @brief System Clock Configuration
  80. * @retval None
  81. */
  82. void SystemClock_Config(void)
  83. {
  84. RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  85. RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  86. /** Configure the main internal regulator output voltage
  87. */
  88. __HAL_RCC_PWR_CLK_ENABLE();
  89. __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  90. /** Initializes the CPU, AHB and APB busses clocks
  91. */
  92. RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  93. RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  94. RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  95. RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  96. RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  97. RCC_OscInitStruct.PLL.PLLM = 16;
  98. RCC_OscInitStruct.PLL.PLLN = 336;
  99. RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
  100. RCC_OscInitStruct.PLL.PLLQ = 4;
  101. RCC_OscInitStruct.PLL.PLLR = 2;
  102. if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  103. {
  104. Error_Handler();
  105. }
  106. /** Initializes the CPU, AHB and APB busses clocks
  107. */
  108. RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  109. |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  110. RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  111. RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  112. RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  113. RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  114. if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  115. {
  116. Error_Handler();
  117. }
  118. }
  119. /**
  120. * @brief USART2 Initialization Function
  121. * @param None
  122. * @retval None
  123. */
  124. static void MX_USART2_UART_Init(void)
  125. {
  126. /* USER CODE BEGIN USART2_Init 0 */
  127. /* USER CODE END USART2_Init 0 */
  128. /* USER CODE BEGIN USART2_Init 1 */
  129. /* USER CODE END USART2_Init 1 */
  130. huart2.Instance = USART2;
  131. huart2.Init.BaudRate = 115200;
  132. huart2.Init.WordLength = UART_WORDLENGTH_8B;
  133. huart2.Init.StopBits = UART_STOPBITS_1;
  134. huart2.Init.Parity = UART_PARITY_NONE;
  135. huart2.Init.Mode = UART_MODE_TX_RX;
  136. huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  137. huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  138. if (HAL_UART_Init(&huart2) != HAL_OK)
  139. {
  140. Error_Handler();
  141. }
  142. /* USER CODE BEGIN USART2_Init 2 */
  143. /* USER CODE END USART2_Init 2 */
  144. }
  145. /**
  146. * @brief GPIO Initialization Function
  147. * @param None
  148. * @retval None
  149. */
  150. static void MX_GPIO_Init(void)
  151. {
  152. GPIO_InitTypeDef GPIO_InitStruct = {0};
  153. /* GPIO Ports Clock Enable */
  154. __HAL_RCC_GPIOC_CLK_ENABLE();
  155. __HAL_RCC_GPIOH_CLK_ENABLE();
  156. __HAL_RCC_GPIOA_CLK_ENABLE();
  157. __HAL_RCC_GPIOB_CLK_ENABLE();
  158. /*Configure GPIO pin Output Level */
  159. HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
  160. /*Configure GPIO pin : B1_Pin */
  161. GPIO_InitStruct.Pin = B1_Pin;
  162. GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
  163. GPIO_InitStruct.Pull = GPIO_NOPULL;
  164. HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);
  165. /*Configure GPIO pin : LD2_Pin */
  166. GPIO_InitStruct.Pin = LD2_Pin;
  167. GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  168. GPIO_InitStruct.Pull = GPIO_NOPULL;
  169. GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  170. HAL_GPIO_Init(LD2_GPIO_Port, &GPIO_InitStruct);
  171. }
  172. /* USER CODE BEGIN 4 */
  173. /* USER CODE END 4 */
  174. /**
  175. * @brief This function is executed in case of error occurrence.
  176. * @retval None
  177. */
  178. void Error_Handler(void)
  179. {
  180. /* USER CODE BEGIN Error_Handler_Debug */
  181. /* User can add his own implementation to report the HAL error return state */
  182. /* USER CODE END Error_Handler_Debug */
  183. }
  184. #ifdef USE_FULL_ASSERT
  185. /**
  186. * @brief Reports the name of the source file and the source line number
  187. * where the assert_param error has occurred.
  188. * @param file: pointer to the source file name
  189. * @param line: assert_param error line source number
  190. * @retval None
  191. */
  192. void assert_failed(uint8_t *file, uint32_t line)
  193. {
  194. /* USER CODE BEGIN 6 */
  195. /* User can add his own implementation to report the file name and line number,
  196. tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  197. /* USER CODE END 6 */
  198. }
  199. #endif /* USE_FULL_ASSERT */
  200. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/