from inside read_callback() */libusb_submit_transfer(dev->transfer);// Notify the main thread that the read thread is up and running.pthread_barrier_wait(&dev->barrier);/* Handle all the events. */while(!dev->shutdown_thread) {intres;structtimevaltv;tv.tv_sec =0; tv.tv_usec =100...
*4.调用libusb_fill_bulk_transfer *5.提交传输:调用libusb_submit_transfer() * *也可以让buffer参数为NULL, *这种情况下libusb_transfer::length就不会被设置, *需要手工去设置ibusb_transfer::buffer、ibusb_transfer::length * *参数: *transfer-要设置的libusb_transfer结构体 *dev_handle-设备句柄 *buf...
libusb_submit_transfer无回调 我正在设置我的第一个libusb异步转移,但从未收到回调。 我已经连接到图书馆,可以成功地列举和打开设备。 用于设置传输的功能(按照此顺序)如下: libusb_alloc_transfer() libusb_fill_bulk_transfer() libusb_submit_transfer() libusb_submit_transfer返回成功的结果,因此,即使返回错...
In windows 11 x64 system, trying to connect a composite device( WinUSB and MSC), Mass Storage Device works fine, while I try to send data through WinUSB, my app exit with error at libusb_submit_transfer func with error code LIBUSB_ERROR_NOT_FOUND, I tried different interfaces and endp...
void libusb_free_transfer (struct libusb_transfer *transfer) 释放libusb传输。 int libusb_submit_transfer (struct libusb_transfer *transfer) 提交一次传输。 int libusb_cancel_transfer (struct libusb_transfer *transfer) 取消传输。 void libusb_transfer_set_stream_id (struct libusb_transfer *transfe...
这里libusb_fill_bulk_transfer来填充bulk transfer,然后libusb_submit_transfer提交bulk transfer,最后用libusb_handle_events来等待完成。当收到回应后,bulk_transfer_cb回调设置completed,从而阻塞被接触,函数返回。 分段处理bulk transfer libusb_submit_transfer最终调到了submit_bulk_transfer。该函数会检查buffer大小,...
transfer =nullptr;qDebug() <<"libusb_submit_transfer file:"<< rc;return; }qDebug() << rc; qTransferList.append(transfer); } 二、关闭设备后再次打开提交传输失败 在使用中无意间发现当我不关闭程序,仅仅只对设备进行关闭重新打开时提交传输结构失败,导致无法接收也无法发送。 刚开始以为时设备关闭不...
int API_EXPORTED libusb_submit_transfer(struct libusb_transfer *transfer); 2.9.8 处理事件 有4 个函数,其中 2 个没有completed后缀的函数过时了: /** ingroup libusb_poll * 处理任何'pengding的事件' * * 使用异步传输函数时,提交的tranfer结构体后就返回了。 * 可以使用本函数处理这些传输的返回结果...
Hi All, Using macOS Sierra and gphoto2 2.5.15, libgphoto2 2.5.16, when trying to open my camera (which used to work before I had to reload by MacBook), I get the following from the debug log screen: 0.089642 gp_port_open (2): Opening USB...
int (*cancel_transfer)(int sub_api, struct usbi_transfer *itransfer); enum libusb_transfer_status (*copy_transfer_data)(int sub_api, struct usbi_transfer *itransfer, DWORD length); submit_control_transfer发起控制传输,可以仿照winusbx_submit_control_transfer编写。