关于#stm32#的问题：/* User can add his own implementation to report the HAL error return state */

Question

#include "main.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
uint8_t usart3ReceiveData;
int openUsart3Flag= 1;//openUsart3Flag?1????????????,?0?????
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* 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 */
void Forward()
    {
        //×óÕýת
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_SET);
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
        //ÓÒÕý´«
        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_9, GPIO_PIN_SET);
        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET);
    }
void Backward()
    {
        //×ó·´×ª
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_RESET);
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
        //ÓÒ·´´«
        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_9, GPIO_PIN_RESET);
        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET);
    }
void Leftward()
    {
        //×ó·´×ª
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_RESET);
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
        //ÓÒÕý´«
        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_9, GPIO_PIN_SET);
        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET);
    }
void Rightward()
    {
        //×óÕýת
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_SET);
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET); 
        //ÓÒ·´´«
        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_9, GPIO_PIN_RESET);
        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET);
    }
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_TIM3_Init();
  MX_USART3_UART_Init();
  MX_USART2_UART_Init();
  /* USER CODE BEGIN 2 */
HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_4);
HAL_TIM_PWM_Start(&htim3,TIM_CHANNEL_1);
HAL_UART_Receive_IT(&huart3,&usart3ReceiveData,1);
  /* USER CODE END 2 */
HAL_UART_Receive_IT (&huart3,&usart3ReceiveData,1);
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
    static int a=0;
    Forward();
  while (1)
  {
    /* USER CODE END WHILE */
    /* USER CODE BEGIN 3 */
            HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);//°åÔØÂÌÉ«LEDСµÆÒý½Åµçƽ·´×ª
    HAL_Delay(100);
    }
while(a<99)
    {
        __HAL_TIM_SET_COMPARE(&htim1,TIM_CHANNEL_4,a++);
        __HAL_TIM_SET_COMPARE(&htim3,TIM_CHANNEL_1,a++);
    HAL_Delay(10);
    }
    while(a)
    {
        __HAL_TIM_SET_COMPARE(&htim1,TIM_CHANNEL_4,a--);
        __HAL_TIM_SET_COMPARE(&htim3,TIM_CHANNEL_1,a--);
    HAL_Delay(10);
  }
  /* USER CODE END 3 */
}
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  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_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}
/* USER CODE BEGIN 4 */

/* 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
#endif
在中断回调函数中补充串口3的内容，和补充完串口配置写出完整代码

Answer 1

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为了完善STM32的串口中断接收功能，并且在接收到数据后进行相应处理，我们需要在现有的代码基础上添加几个关键部分。首先，确保串口3的初始化已经正确完成，然后编写一个中断服务例程（ISR）来处理接收到的数据。此外，我们还需要一个函数来解析接收到的数据并执行相应的动作，例如控制电机方向。

1. 完善串口3的中断配置

在MX_USART3_UART_Init()函数中，你需要确保HAL_UART_Receive_IT()被正确调用来启动接收中断。这通常在main()函数的开始部分完成，但为了完整性，我们将展示如何在MX_USART3_UART_Init()中添加必要的配置。

2. 编写串口中断服务例程

当串口接收到数据时，中断服务例程将被触发。在这个例程中，我们将读取接收到的数据，并调用一个函数来处理这些数据。

3. 处理接收到的数据

根据接收到的数据内容，决定执行Forward()、Backward()、Leftward()或Rightward()中的哪一个函数。

下面是修改后的代码示例：

#include "main.h"

// ... (其他代码保持不变)

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
    if (huart == &huart3)
    {
        if (usart3ReceiveData == 'F') // 假设'F'代表前进
        {
            Forward();
        }
        else if (usart3ReceiveData == 'B') // 'B'代表后退
        {
            Backward();
        }
        else if (usart3ReceiveData == 'L') // 'L'代表左转
        {
            Leftward();
        }
        else if (usart3ReceiveData == 'R') // 'R'代表右转
        {
            Rightward();
        }
        // 重新启动接收中断以接收下一个字符
        HAL_UART_Receive_IT(&huart3, &usart3ReceiveData, 1);
    }
}

int main(void)
{
    // ... (其他代码保持不变)
    
    /* USER CODE BEGIN 2 */
    HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_4);
    HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1);
    HAL_UART_Receive_IT(&huart3, &usart3ReceiveData, 1);
    
    // ... (其他代码保持不变)
}

// ... (其他代码保持不变)

在这个示例中，当接收到一个字符时，HAL_UART_RxCpltCallback()将被调用。根据接收到的字符，它会调用不同的函数来控制电机的方向。同时，它还会重新启动接收中断，以便继续接收后续的数据。

请根据实际的应用需求调整字符识别逻辑以及电机控制的具体实现。这个框架提供了一个基本的结构，可以根据具体的需求进行扩展和定制。