winform和STM32单片机串口数据收发通信程序,MODBUS RTU协议,端口1 波特率9600,8位,无检验,停止位1位

以下是C# Winform和STM32单片机串口数据收发通信程序，使用MODBUS RTU协议，端口1 波特率9600，8位，无检验，停止位1位。

C# Winform程序：

using System;
using System.IO.Ports;
using System.Windows.Forms;

namespace WinformSerialCommunication
{
    public partial class Form1 : Form
    {
        private SerialPort _serialPort = new SerialPort();

        public Form1()
        {
            InitializeComponent();

            // 初始化串口
            _serialPort.PortName = "COM1";
            _serialPort.BaudRate = 9600;
            _serialPort.DataBits = 8;
            _serialPort.Parity = Parity.None;
            _serialPort.StopBits = StopBits.One;
            _serialPort.ReadTimeout = 500;
            _serialPort.WriteTimeout = 500;

            // 打开串口
            try
            {
                _serialPort.Open();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void buttonSend_Click(object sender, EventArgs e)
        {
            // 发送数据
            try
            {
                byte[] sendData = new byte[] { 0x01, 0x03, 0x00, 0x00, 0x00, 0x01, 0x84, 0x0A };
                _serialPort.Write(sendData, 0, sendData.Length);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void buttonReceive_Click(object sender, EventArgs e)
        {
            // 接收数据
            try
            {
                byte[] receiveData = new byte[8];
                _serialPort.Read(receiveData, 0, receiveData.Length);
                textBoxReceive.Text = BitConverter.ToString(receiveData);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
    }
}

STM32单片机程序：

#include "stm32f10x.h"
#include "stm32f10x_usart.h"
#include "misc.h"

void NVIC_Configuration(void);
void USART_Configuration(void);
void delay(uint32_t nCount);

int main(void)
{
    NVIC_Configuration();
    USART_Configuration();

    while (1)
    {

    }
}

void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

void USART_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);

    // USART1_TX
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // USART1_RX
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    USART_InitStructure.USART_BaudRate = 9600;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

    USART_Init(USART1, &USART_InitStructure);

    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);

    USART_Cmd(USART1, ENABLE);
}

void delay(uint32_t nCount)
{
    for (; nCount != 0; nCount--);
}

void USART1_IRQHandler(void)
{
    if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
    {
        uint16_t data = USART_ReceiveData(USART1);
        USART_SendData(USART1, data);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
    }
}

以上代码仅供参考，具体实现还需要根据实际情况进行修改和优化。