HIDTxHandleBusy Macro

#define HIDTxHandleBusy(handle) USBHandleBusy(handle)

Retreives the status of the buffer ownership. This function will indicate if the previous transfer is complete or not. 

This function will take the input handle (pointer to a BDT entry) and will check the UOWN bit. If the UOWN bit is set then that indicates that the transfer is not complete and the USB module still owns the data memory. If the UOWN bit is clear that means that the transfer is complete and that the CPU now owns the data memory. 

For more information about the BDT, please refer to the appropriate datasheet for the device in use. 

Typical Usage:

//make sure that the last transfer isn't busy by checking the handle
if(!HIDTxHandleBusy(USBInHandle))
{
    //Send the data contained in the ToSendDataBuffer[] array out on
    //  endpoint HID_EP
    USBInHandle = HIDTxPacket(HID_EP,(BYTE*)&ToSendDataBuffer[0],sizeof(ToSendDataBuffer));
}

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