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STM32 串口收发数据-中断的方式

news 2025/10/12 6:45:10

1，STM32芯片为STM32G070RBT6

2，本程序为测试程序，实现了程序的数据发送及接收

3，项目代码以压缩包中的代码为最终代码

4，可用于项目移植

5，接收数据的处理需要根据具体的项目修改。我已经用该代码移植到实际的项目中

代码：

/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file           : main.c
* @brief          : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "iwdg.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include<stdio.h>

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
typedef struct {
uint8_t  RXData[512];
uint8_t  TXData[512];
uint16_t RXLength;
uint8_t  RXFlag;
uint32_t time;
uint8_t temp[1];
} Usart;
Usart COM1;

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
int fputc(int ch, FILE *f)
{
HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xffff);
return ch;
}

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

uint16_t timeCount=0;

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
* @brief  The application entry point.
* @retval int
*/
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
MX_GPIO_Init();
MX_TIM1_Init();
MX_USART1_UART_Init();
MX_IWDG_Init();
/* USER CODE BEGIN 2 */
//开启定时器中断
HAL_TIM_Base_Start_IT(&htim1);
//开启串口接收中断
HAL_UART_Receive_IT(&huart1,(uint8_t *)COM1.temp,1);
//复位看门狗
HAL_IWDG_Refresh(&hiwdg);
printf("start\n");

  /* USER CODE END 2 */

  /* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
HAL_IWDG_Refresh(&hiwdg);
if(timeCount>1000)
{
timeCount=0;
//复位看门狗
HAL_IWDG_Refresh(&hiwdg);
}
if((COM1.RXFlag==1)&&(COM1.time>15))
{
COM1.RXFlag=0;
printf("get data\n");
COM1.RXLength=0;
}
}
/* USER CODE END 3 */
}

/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage
*/
HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);

  /** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1;
RCC_OscInitStruct.PLL.PLLN = 8;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}

  /** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}

/* USER CODE BEGIN 4 */
//定时器中断
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
if (htim->Instance == TIM1)
{
timeCount++;
if(timeCount>65530)
{
timeCount=0;

}
if(COM1.RXFlag==1)
{
COM1.time++;
if(COM1.time>15)
{
COM1.time=20;
}
}
}
}
//串口中断
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{

if(huart->Instance == USART1)//判断串口号
{
HAL_UART_Receive_IT(&huart1, (uint8_t *)COM1.temp, 1);   //再开启接收中断
//判断是否为第一个数据
if(COM1.RXFlag==0)
{
COM1.time=0;
COM1.RXLength=0;
COM1.RXFlag=1;
COM1.RXData[COM1.RXLength++]=COM1.temp[0];
}
else
{
COM1.time=0;
COM1.RXFlag=1;
COM1.RXData[COM1.RXLength++]=COM1.temp[0];
}
}


}

/* USER CODE END 4 */

/**
* @brief  This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief  Reports the name of the source file and the source line number
*         where the assert_param error has occurred.
* @param  file: pointer to the source file name
* @param  line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

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