main.c 6.4 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. * Copyright (c) 2025 STMicroelectronics.
  10. * All rights reserved.
  11. *
  12. * This software is licensed under terms that can be found in the LICENSE file
  13. * in the root directory of this software component.
  14. * If no LICENSE file comes with this software, it is provided AS-IS.
  15. *
  16. ******************************************************************************
  17. */
  18. /* USER CODE END Header */
  19. /* Includes ------------------------------------------------------------------*/
  20. #include "main.h"
  21. /* Private includes ----------------------------------------------------------*/
  22. /* USER CODE BEGIN Includes */
  23. /* USER CODE END Includes */
  24. /* Private typedef -----------------------------------------------------------*/
  25. /* USER CODE BEGIN PTD */
  26. /* USER CODE END PTD */
  27. /* Private define ------------------------------------------------------------*/
  28. /* USER CODE BEGIN PD */
  29. /* USER CODE END PD */
  30. /* Private macro -------------------------------------------------------------*/
  31. /* USER CODE BEGIN PM */
  32. /* USER CODE END PM */
  33. /* Private variables ---------------------------------------------------------*/
  34. UART_HandleTypeDef huart2;
  35. /* USER CODE BEGIN PV */
  36. /* USER CODE END PV */
  37. /* Private function prototypes -----------------------------------------------*/
  38. void SystemClock_Config(void);
  39. static void MX_GPIO_Init(void);
  40. static void MX_USART2_UART_Init(void);
  41. /* USER CODE BEGIN PFP */
  42. /* USER CODE END PFP */
  43. /* Private user code ---------------------------------------------------------*/
  44. /* USER CODE BEGIN 0 */
  45. /* USER CODE END 0 */
  46. /**
  47. * @brief The application entry point.
  48. * @retval int
  49. */
  50. int main(void)
  51. {
  52. /* USER CODE BEGIN 1 */
  53. /* USER CODE END 1 */
  54. /* MCU Configuration--------------------------------------------------------*/
  55. /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  56. HAL_Init();
  57. /* USER CODE BEGIN Init */
  58. /* USER CODE END Init */
  59. /* Configure the system clock */
  60. SystemClock_Config();
  61. /* USER CODE BEGIN SysInit */
  62. /* USER CODE END SysInit */
  63. /* Initialize all configured peripherals */
  64. MX_GPIO_Init();
  65. MX_USART2_UART_Init();
  66. /* USER CODE BEGIN 2 */
  67. /* USER CODE END 2 */
  68. /* Infinite loop */
  69. /* USER CODE BEGIN WHILE */
  70. while (1)
  71. {
  72. /* USER CODE END WHILE */
  73. /* USER CODE BEGIN 3 */
  74. }
  75. /* USER CODE END 3 */
  76. }
  77. /**
  78. * @brief System Clock Configuration
  79. * @retval None
  80. */
  81. void SystemClock_Config(void)
  82. {
  83. RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  84. RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  85. /** Configure the main internal regulator output voltage
  86. */
  87. HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
  88. /** Initializes the RCC Oscillators according to the specified parameters
  89. * in the RCC_OscInitTypeDef structure.
  90. */
  91. RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  92. RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  93. RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
  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 = RCC_PLLM_DIV1;
  98. RCC_OscInitStruct.PLL.PLLN = 16;
  99. RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  100. RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV4;
  101. if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  102. {
  103. Error_Handler();
  104. }
  105. /** Initializes the CPU, AHB and APB buses clocks
  106. */
  107. RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  108. |RCC_CLOCKTYPE_PCLK1;
  109. RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  110. RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  111. RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  112. if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  113. {
  114. Error_Handler();
  115. }
  116. }
  117. /**
  118. * @brief USART2 Initialization Function
  119. * @param None
  120. * @retval None
  121. */
  122. static void MX_USART2_UART_Init(void)
  123. {
  124. /* USER CODE BEGIN USART2_Init 0 */
  125. /* USER CODE END USART2_Init 0 */
  126. /* USER CODE BEGIN USART2_Init 1 */
  127. /* USER CODE END USART2_Init 1 */
  128. huart2.Instance = USART2;
  129. huart2.Init.BaudRate = 115200;
  130. huart2.Init.WordLength = UART_WORDLENGTH_8B;
  131. huart2.Init.StopBits = UART_STOPBITS_1;
  132. huart2.Init.Parity = UART_PARITY_NONE;
  133. huart2.Init.Mode = UART_MODE_TX_RX;
  134. huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  135. huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  136. huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  137. huart2.Init.ClockPrescaler = UART_PRESCALER_DIV1;
  138. huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  139. if (HAL_RS485Ex_Init(&huart2, UART_DE_POLARITY_HIGH, 0, 0) != HAL_OK)
  140. {
  141. Error_Handler();
  142. }
  143. /* USER CODE BEGIN USART2_Init 2 */
  144. /* USER CODE END USART2_Init 2 */
  145. }
  146. /**
  147. * @brief GPIO Initialization Function
  148. * @param None
  149. * @retval None
  150. */
  151. static void MX_GPIO_Init(void)
  152. {
  153. /* USER CODE BEGIN MX_GPIO_Init_1 */
  154. /* USER CODE END MX_GPIO_Init_1 */
  155. /* GPIO Ports Clock Enable */
  156. __HAL_RCC_GPIOA_CLK_ENABLE();
  157. /* USER CODE BEGIN MX_GPIO_Init_2 */
  158. /* USER CODE END MX_GPIO_Init_2 */
  159. }
  160. /* USER CODE BEGIN 4 */
  161. /* USER CODE END 4 */
  162. /**
  163. * @brief This function is executed in case of error occurrence.
  164. * @retval None
  165. */
  166. void Error_Handler(void)
  167. {
  168. /* USER CODE BEGIN Error_Handler_Debug */
  169. /* User can add his own implementation to report the HAL error return state */
  170. __disable_irq();
  171. while (1)
  172. {
  173. }
  174. /* USER CODE END Error_Handler_Debug */
  175. }
  176. #ifdef USE_FULL_ASSERT
  177. /**
  178. * @brief Reports the name of the source file and the source line number
  179. * where the assert_param error has occurred.
  180. * @param file: pointer to the source file name
  181. * @param line: assert_param error line source number
  182. * @retval None
  183. */
  184. void assert_failed(uint8_t *file, uint32_t line)
  185. {
  186. /* USER CODE BEGIN 6 */
  187. /* User can add his own implementation to report the file name and line number,
  188. ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  189. /* USER CODE END 6 */
  190. }
  191. #endif /* USE_FULL_ASSERT */