usb trace/monitor  

2012-04-12 17:31:08|  分類： kernel |  標簽：usb  libusb   |舉報 |字號 訂閱

    int ret;

    ret = libusb_init(NULL);
    ASSERT(ret == 0);

    devh = libusb_open_device_with_vid_pid(NULL, xxxx_VID, xxxx_PID);
    ASSERT(devh != NULL);

    ret = libusb_set_configuration(devh, 1);
    ASSERT(ret == 0);

    ret = libusb_claim_interface(devh, 0);
    ASSERT(ret == 0);

    libusb_control_transfer(devh, 
        LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_OUT, 
        CMD_INIT, 0, 0, NULL, 0, TIME_OUT); /* CMD_INIT為0xe0 */

    libusb_control_transfer(devh, 
        LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_OUT, 
        CMD_GET_IMAGE, 0, 0, NULL, 0, TIME_OUT); /* CMD_GET_IMAGE為0xe5 */

    img_transfer = libusb_alloc_transfer(0);
    ASSERT(img_transfer != NULL);

    libusb_fill_bulk_transfer(img_transfer, devh, ep_bulk, buf,
        sizeof(buf), cb_img, jcb, 0);

    ret = libusb_submit_transfer(img_transfer);
    ASSERT(ret == 0);