用PC端控制信号发生器的C语言代码

控制信号发生器的代码需要依赖于具体的信号发生器型号和通讯协议。以下是一份通用的示例代码，可以通过串口通信控制信号发生器：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>

#define SERIAL_PORT "COM1" // 串口号
#define BAUD_RATE 9600     // 波特率

HANDLE hSerial;         // 串口句柄

void initSerialPort() {
    hSerial = CreateFile(SERIAL_PORT, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);

    if (hSerial == INVALID_HANDLE_VALUE) {
        printf("Failed to open serial port: %s\n", SERIAL_PORT);
        exit(1);
    }

    DCB dcbSerialParams = { 0 };
    dcbSerialParams.DCBlength = sizeof(dcbSerialParams);
    if (!GetCommState(hSerial, &dcbSerialParams)) {
        printf("Error getting serial port state\n");
        exit(1);
    }

    dcbSerialParams.BaudRate = BAUD_RATE;
    dcbSerialParams.ByteSize = 8;
    dcbSerialParams.StopBits = ONESTOPBIT;
    dcbSerialParams.Parity = NOPARITY;

    if (!SetCommState(hSerial, &dcbSerialParams)) {
        printf("Error setting serial port state\n");
        exit(1);
    }
}

void sendCommand(char* command) {
    DWORD dwBytesWritten;
    if (!WriteFile(hSerial, command, strlen(command), &dwBytesWritten, NULL)) {
        printf("Error sending command: %s\n", command);
        exit(1);
    }
}

int main() {
    initSerialPort();

    // 发送示波器控制命令
    sendCommand("*IDN?\n"); // 询问设备型号

    // 读取设备返回的数据
    char response[256];
    DWORD dwBytesRead;
    if (!ReadFile(hSerial, response, sizeof(response), &dwBytesRead, NULL)) {
        printf("Error reading response\n");
        exit(1);
    }

    printf("Device response: %s\n", response);

    CloseHandle(hSerial);
    return 0;
}

以上代码仅供参考，具体实现需要根据信号发生器的实际情况进行调整。