[Libusbx-devel] asynchronous libusb_bulk_transfer

[vasvladal]

I have the following structure and has to write down it on the USB device.
    Then to read out from it the answer.
    In a synchronous mode everything works well.
    Somehow most to make asynchronously?
    If it is possible, help with an example

    ZUM_Block *pSaveBlock = new ZUM_Block;


   
//*****************************************************************************************
    //Write
    int actual_length = 0;
    r = libusb_bulk_transfer(handle, 0x4, (unsigned char*)pSaveBlock, 512, &actual_length, 0);
    if (r == 0 && actual_length == 512)
    {
        // always Ok
       
    }
   
//******************************************************************************************
    //Read
    memset(pSaveBlock,0,512);
    actual_length = 0;
    r = libusb_bulk_transfer(handle, 0x88, (unsigned char*)pSaveBlock, 512, &actual_length, 0);
    if (r == 0 && actual_length == 512)
    {
        // always Ok
    }
   

//*******************************************************************************************

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