void USBDDriverCallbacks_ConfigurationChanged(unsigned char cfgnum) { if (cfgnum > 0) { hiddTransferDriver.iLen = 0; USBD_Read(HIDDTransferDriverDescriptors_INTERRUPTOUT, hiddTransferDriver.iBuf, HIDDTransferDriver_REPORTSIZE, HIDDTransferDriver_DataReceived, 0); } }