写·一个stm32f103hal库串口接收数据的代码源码

在STM32F103 HAL库中，通过HAL库提供的功能来管理串口通信通常涉及以下几个步骤。以下是一个简化的示例，展示了如何初始化并接收数据：

#include "stm32f1xx_hal.h"
#include "stdio.h"

// 初始化串口句柄
void MX_USART1_UART_Init(void)
{
    USART_HandleTypeDef huart1;

    // 配置串口
    huart1.Instance = USART1;
    huart1.Init.BaudRate = 9600; // 设置波特率
    huart1.Init.WordLength = UART_WORDLENGTH_8B;
    huart1.Init.StopBits = UART_STOPBITS_1;
    huart1.Init.Parity = UART_PARITY_NONE;
    huart1.Init.Mode = UART_MODE_TX_RX;
    huart1.Init.HwFlowControl = UART_HWCONTROL_NONE;
    huart1.Init.RxRingBufferLength = UART_RECEIVE_LENGTH_16B;

    // 初始化并开启串口
    if (HAL_UART_Init(&huart1) != HAL_OK)
    {
        while(1); // 程序终止，因为初始化失败
    }
}

// 主循环中的串口接收函数
uint8_t ReceiveData()
{
    uint8_t data = 0;
    HAL_StatusTypeDef status = HAL_UART_Receive(&huart1, &data, 1, 1000); // 接收1字节数据

    if(status == HAL_OK)
    {
        return data; // 返回接收到的数据
    }
    else if(status == HAL_TIMEOUT)
    {
        printf("Timeout!\n");
        return 0; // 数据未接收成功，返回0
    }
    else
    {
        printf("Error receiving data: %d\n", status);
        return 0; // 发生错误，返回0
    }
}

int main(void)
{
    // 先初始化硬件资源
    MX_USART1_UART_Init();

    while (1)
    {
        uint8_t received_char = ReceiveData();
        if(received_char != 0)
        {
            printf("Received character: %u\n", received_char);
        }
    }

    return 0;
}