Riffa PCIe驱动在Windows 7系统下配置多个通道的代码

以下是使用Riffa API函数在Windows 7系统下配置多个通道的示例代码：

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include "riffa.h"

#define NUM_CHANNELS 2 // 配置通道数量为2

int main(int argc, char **argv) {
    fpga_t *fpga;
    int i, j, ret, num;
    int channel[NUM_CHANNELS]; // 定义通道数组
    int data[NUM_CHANNELS][1024]; // 定义数据数组

    // 初始化Riffa库
    ret = fpga_init();
    if (ret != 0) {
        printf("Error initializing fpga library.\n");
        return ret;
    }

    // 打开FPGA设备
    fpga = fpga_open(0);
    if (fpga == NULL) {
        printf("Error opening fpga device.\n");
        fpga_close(fpga);
        return -1;
    }

    // 配置多个通道
    for (i = 0; i < NUM_CHANNELS; i++) {
        channel[i] = fpga_channel_open(fpga, i);
        if (channel[i] < 0) {
            printf("Error opening channel %d.\n", i);
            for (j = 0; j < i; j++) fpga_channel_close(fpga, channel[j]);
            fpga_close(fpga);
            return -1;
        }
    }

    // 进行数据传输
    for (i = 0; i < NUM_CHANNELS; i++) {
        for (j = 0; j < 1024; j++) data[i][j] = i + j;

        ret = fpga_send(channel[i], data[i], 1024, 0, 1, 5000);
        if (ret != 1024) {
            printf("Error sending data on channel %d.\n", i);
            for (j = 0; j < NUM_CHANNELS; j++) fpga_channel_close(fpga, channel[j]);
            fpga_close(fpga);
            return -1;
        }

        num = fpga_recv(channel[i], data[i], 1024, 0, 1, 5000);
        if (num != 1024) {
            printf("Error receiving data on channel %d.\n", i);
            for (j = 0; j < NUM_CHANNELS; j++) fpga_channel_close(fpga, channel[j]);
            fpga_close(fpga);
            return -1;
        }

        for (j = 0; j < 1024; j++) {
            if (data[i][j] != (i + j) * 2) {
                printf("Error in received data on channel %d.\n", i);
                for (j = 0; j < NUM_CHANNELS; j++) fpga_channel_close(fpga, channel[j]);
                fpga_close(fpga);
                return -1;
            }
        }
    }

    // 关闭通道和FPGA设备
    for (i = 0; i < NUM_CHANNELS; i++) fpga_channel_close(fpga, channel[i]);
    fpga_close(fpga);

    printf("Data transfer completed successfully.\n");

    return 0;
}

上述代码中，首先初始化了Riffa库，并打开了FPGA设备。然后，通过循环配置了多个通道，并进行了数据传输。最后，关闭了所有通道和FPGA设备。注意，这里的数据传输只是一个示例，实际应用中需要根据需要进行修改。