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STM32F10X ModBus RTU master code

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ID:656243 发表于 2019-12-4 20:39 | 显示全部楼层 |阅读模式
代码经测试有效  可参考

单片机源程序如下:

  2. #include "main.h"
  3. #include "stm32f0xx_hal.h"
  4. #include "modbus_master.h"
  5. /* USER CODE BEGIN Includes */

  7. /* USER CODE END Includes */

  9. /* Private variables ---------------------------------------------------------*/
  10. UART_HandleTypeDef huart2;

  12. /* USER CODE BEGIN PV */
  13. /* Private variables ---------------------------------------------------------*/

  15. /* USER CODE END PV */

  17. /* Private function prototypes -----------------------------------------------*/
  18. void SystemClock_Config(void);
  19. static void MX_GPIO_Init(void);
  20. static void MX_USART2_UART_Init(void);

  22. /* USER CODE BEGIN PFP */
  23. /* Private function prototypes -----------------------------------------------*/

  25. /* USER CODE END PFP */

  27. /* USER CODE BEGIN 0 */

  29. /* USER CODE END 0 */

  31. int main(void)
  32. {
  33.   uint8_t state=0;
  34.         uint16_t  Input_Result[2];
  35.   HAL_Init();
  36.   SystemClock_Config();
  37.   MX_GPIO_Init();
  38.         ModbusMaster_begin();
  39.   MX_USART2_UART_Init();
  40.   
  41.   while (1)
  42.   {
  43.                 uint8_t result;
  44.                 //测试Read Input Registers功能
  45.                 //从机地址0x01 ,寄存器地址 0x02 ,连续读2个寄存器地址
  46.                 result = ModbusMaster_readInputRegisters(0x01,0x2, 2);
  47.                 if (result == 0x00)
  48.                 {
  49.                         Input_Result[0] = ModbusMaster_getResponseBuffer(0x00);
  50.                         Input_Result[1] = ModbusMaster_getResponseBuffer(0x01);
  51.                 }
  52.                         HAL_Delay(1000);
  53.   }

  55. }

  57. /** System Clock Configuration
  58. */
  59. void SystemClock_Config(void)
  60. {

  62.   RCC_OscInitTypeDef RCC_OscInitStruct;
  63.   RCC_ClkInitTypeDef RCC_ClkInitStruct;

  65.     /**Initializes the CPU, AHB and APB busses clocks
  66.     */
  67.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48;
  68.   RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
  69.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  70.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  71.   {
  72.     _Error_Handler(__FILE__, __LINE__);
  73.   }

  75.     /**Initializes the CPU, AHB and APB busses clocks
  76.     */
  77.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  78.                               |RCC_CLOCKTYPE_PCLK1;
  79.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI48;
  80.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  81.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  83.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  84.   {
  85.     _Error_Handler(__FILE__, __LINE__);
  86.   }

  88.     /**Configure the Systick interrupt time
  89.     */
  90.   HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

  92.     /**Configure the Systick
  93.     */
  94.   HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

  96.   /* SysTick_IRQn interrupt configuration */
  97.   HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
  98. }

  100. /* USART2 init function */
  101. static void MX_USART2_UART_Init(void)
  102. {

  104.   huart2.Instance = USART2;
  105.   huart2.Init.BaudRate = 115200;
  106.   huart2.Init.WordLength = UART_WORDLENGTH_8B;
  107.   huart2.Init.StopBits = UART_STOPBITS_1;
  108.   huart2.Init.Parity = UART_PARITY_NONE;
  109.   huart2.Init.Mode = UART_MODE_TX_RX;
  110.   huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  111.   huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  112.   huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  113.   huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  114.   if (HAL_UART_Init(&huart2) != HAL_OK)
  115.   {
  116.     _Error_Handler(__FILE__, __LINE__);
  117.   }
  118.   __HAL_UART_ENABLE_IT(&huart2,UART_IT_RXNE);
  119. }

  121. /** Configure pins as
  122.         * Analog
  123.         * Input
  124.         * Output
  125.         * EVENT_OUT
  126.         * EXTI
  127. */
  128. static void MX_GPIO_Init(void)
  129. {

  131.   /* GPIO Ports Clock Enable */
  132.   __HAL_RCC_GPIOA_CLK_ENABLE();

  134. }

  136. /* USER CODE BEGIN 4 */

  138. /* USER CODE END 4 */

  140. /**
  141.   * @brief  This function is executed in case of error occurrence.
  142.   * @param  None
  143.   * @retval None
  144.   */
  145. void _Error_Handler(char * file, int line)
  146. {
  147.   /* USER CODE BEGIN Error_Handler_Debug */
  148.   /* User can add his own implementation to report the HAL error return state */
  149.   while(1)
  150.   {
  151.   }
  152.   /* USER CODE END Error_Handler_Debug */
  153. }

  155. #ifdef USE_FULL_ASSERT

  157. /**
  158.    * @brief Reports the name of the source file and the source line number
  159.    * where the assert_param error has occurred.
  160.    * @param file: pointer to the source file name
  161.    * @param line: assert_param error line source number
  162.    * @retval None
  163.    */
  164. void assert_failed(uint8_t* file, uint32_t line)
  165. {
  166.   /* USER CODE BEGIN 6 */
  167.   /* User can add his own implementation to report the file name and line number,
  168.     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  169.   /* USER CODE END 6 */

  171. }

  173. #endif

  175. /**
  176.   * @}
  177.   */

  179. /**
  180.   * @}
  181. */

  183. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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所有资料51hei提供下载:
ModBus-Master-master.7z (1.19 MB, 下载次数: 72)
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ID:111310 发表于 2021-8-27 01:04 | 显示全部楼层
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