Problem with DT_HID (maybe!)

[awmt102]

Hi Darrel

Thanks for the reply, that certainly makes some sense. However I have replaced my tick timer routine with this one:

tick_timer:
 USBSERVICE
 USBIn 1, USBRXBuffer, USBRXBufferCount, NoData  ' read data, if available
 USBSERVICE
 goto DataOK
NoData:      
 ' zero out the USBRXBuffer[0] byte 
 USBRXBuffer[0] = 0
DataOK:
@ INT_RETURN

And in the main loop I can check USBRXBuffer[0] for a non zero value which indicates a valid command has been received and I can act on it. Given that the only thing not USB related is setting that byte to 0 I would not have thought that the device would drop off the bus, especially given that this is the 'traditional' way of handling USBSERVICE routines. I have also set the tick_timer interrupt to be Low Priority.

However this suffers from the same problem as before. Any thoughts?

Thanks

Andy