使用C++ 完成串口通信
时间: 2023-08-02 16:12:15 浏览: 50
好的,这里给您提供一个使用C++实现串口通信的简单示例。示例代码如下:
```cpp
#include <iostream>
#include <windows.h>
int main() {
// Open serial port
HANDLE hSerial = CreateFile("COM3", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hSerial == INVALID_HANDLE_VALUE) {
std::cerr << "Error opening serial port!" << std::endl;
return 1;
}
// Configure serial port settings
DCB dcbSerialParams = {0};
dcbSerialParams.DCBlength = sizeof(dcbSerialParams);
if(!GetCommState(hSerial, &dcbSerialParams)) {
std::cerr << "Error getting serial port state!" << std::endl;
CloseHandle(hSerial);
return 1;
}
dcbSerialParams.BaudRate = CBR_9600;
dcbSerialParams.ByteSize = 8;
dcbSerialParams.StopBits = ONESTOPBIT;
dcbSerialParams.Parity = NOPARITY;
if(!SetCommState(hSerial, &dcbSerialParams)) {
std::cerr << "Error setting serial port state!" << std::endl;
CloseHandle(hSerial);
return 1;
}
// Read data from serial port
char buffer[256];
DWORD bytesRead;
if(!ReadFile(hSerial, buffer, sizeof(buffer), &bytesRead, NULL)) {
std::cerr << "Error reading from serial port!" << std::endl;
CloseHandle(hSerial);
return 1;
}
// Print data to console
std::cout << "Received data: ";
for(DWORD i = 0; i < bytesRead; i++) {
std::cout << buffer[i];
}
std::cout << std::endl;
// Close serial port
CloseHandle(hSerial);
return 0;
}
```
该示例代码使用了Windows系统API函数来打开串口、配置串口参数、读取串口数据、关闭串口。需要注意的是,串口通信需要使用特定的串口名称和波特率等参数,您需要根据实际情况修改代码中的串口名称和参数。
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