用C语言编写程序,串接收完10个字口数据,转发给pc
时间: 2024-03-08 07:47:02 浏览: 20
好的,以下是一个简单的串口接收10个字节数据并转发给PC的C语言示例代码,您可以参考:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#define SERIAL_PORT "COM1" // 根据实际情况修改串口号
#define BAUD_RATE 9600 // 根据实际情况修改波特率
#define DATA_SIZE 10 // 接收的字节数
int main(void)
{
HANDLE hSerial;
DCB dcbSerialParams = {0};
COMMTIMEOUTS timeouts = {0};
char buffer[DATA_SIZE];
DWORD bytesRead, bytesWritten;
hSerial = CreateFile(SERIAL_PORT, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hSerial == INVALID_HANDLE_VALUE) {
fprintf(stderr, "Failed to open serial port\n");
exit(1);
}
dcbSerialParams.DCBlength = sizeof(dcbSerialParams);
if (!GetCommState(hSerial, &dcbSerialParams)) {
fprintf(stderr, "Failed to get serial port state\n");
CloseHandle(hSerial);
exit(1);
}
dcbSerialParams.BaudRate = BAUD_RATE;
dcbSerialParams.ByteSize = 8;
dcbSerialParams.StopBits = ONESTOPBIT;
dcbSerialParams.Parity = NOPARITY;
if (!SetCommState(hSerial, &dcbSerialParams)) {
fprintf(stderr, "Failed to set serial port state\n");
CloseHandle(hSerial);
exit(1);
}
timeouts.ReadIntervalTimeout = 50;
timeouts.ReadTotalTimeoutConstant = 50;
timeouts.ReadTotalTimeoutMultiplier = 10;
timeouts.WriteTotalTimeoutConstant = 50;
timeouts.WriteTotalTimeoutMultiplier = 10;
if (!SetCommTimeouts(hSerial, &timeouts)) {
fprintf(stderr, "Failed to set serial port timeouts\n");
CloseHandle(hSerial);
exit(1);
}
bytesRead = 0;
while (bytesRead < DATA_SIZE) {
if (ReadFile(hSerial, buffer + bytesRead, DATA_SIZE - bytesRead, &bytesRead, NULL) == 0) {
fprintf(stderr, "Failed to read from serial port\n");
CloseHandle(hSerial);
exit(1);
}
}
CloseHandle(hSerial);
hSerial = CreateFile("COM2", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hSerial == INVALID_HANDLE_VALUE) {
fprintf(stderr, "Failed to open serial port\n");
exit(1);
}
if (!GetCommState(hSerial, &dcbSerialParams)) {
fprintf(stderr, "Failed to get serial port state\n");
CloseHandle(hSerial);
exit(1);
}
dcbSerialParams.BaudRate = BAUD_RATE;
dcbSerialParams.ByteSize = 8;
dcbSerialParams.StopBits = ONESTOPBIT;
dcbSerialParams.Parity = NOPARITY;
if (!SetCommState(hSerial, &dcbSerialParams)) {
fprintf(stderr, "Failed to set serial port state\n");
CloseHandle(hSerial);
exit(1);
}
if (WriteFile(hSerial, buffer, DATA_SIZE, &bytesWritten, NULL) == 0) {
fprintf(stderr, "Failed to write to serial port\n");
CloseHandle(hSerial);
exit(1);
}
CloseHandle(hSerial);
return 0;
}
```
该代码使用Windows API实现串口数据的接收和发送。它首先从串口读取10个字节数据,然后将数据发送到另一个串口,即发送给PC。请注意,此示例代码仅供参考,实际情况需要根据具体要求进行修改和优化。
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