如何用libusb在Ubuntu上读写USB设备

?Ubuntu???libusb??USB??????libusb??libusb?????????Ubuntu???USB???????:

1. ??libusb??????:

sudo apt-get update
sudo apt-get install libusb-1.0-0 libusb-1.0-0-dev

2. ??????libusb????C???????????????,????libusb??USB??????????:

#include 
#include 

int main() {
    libusb_device **devs;
    libusb_device_handle *dev_handle;
    libusb_context *ctx = NULL;

    // Initialize libusb
    if (libusb_init(&ctx) < 0) {
        fprintf(stderr, "Error initializing libusb\n");
        return 1;
    }

    // Get the list of USB devices
    ssize_t count = libusb_get_device_list(ctx, &devs);
    if (count < 0) {
        fprintf(stderr, "Error getting device list\n");
        return 1;
    }

    // Open the USB device
    dev_handle = libusb_open_device_with_vid_pid(ctx, VENDOR_ID, PRODUCT_ID);
    if (dev_handle == NULL) {
        fprintf(stderr, "Error opening device\n");
        return 1;
    }

    // Read the device descriptor
    struct libusb_device_descriptor desc;
    if (libusb_get_device_descriptor(libusb_get_device(dev_handle), &desc) < 0) {
        fprintf(stderr, "Error getting device descriptor\n");
        return 1;
    }

    printf("Device Descriptor:\n");
    printf("Vendor ID: x\n", desc.idVendor);
    printf("Product ID: x\n", desc.idProduct);

    // Clean up
    libusb_close(dev_handle);
    libusb_free_device_list(devs, 1);
    libusb_exit(ctx);

    return 0;
}

3. ????:

gcc -o usb_example usb_example.c -lusb-1.0

4. ????:

./usb_example

???????libusb?Ubuntu???USB???????????????????????USB????,???????