General discussions about V-USB, our firmware-only implementation of a low speed USB device on Atmel's AVR microcontrollers
- Posts: 8
- Joined: Sun Jan 27, 2008 1:54 am
I have built AVR Doper, windows see it as COMx in CDC mode but in AVR Studio 4 it constantly says Detecting....FAILED!
Can anyone tell me what can be wrong??
- Objective Development
- Posts: 1443
- Joined: Thu Nov 09, 2006 11:46 am
Can you try avrdude in verbose mode? It might give more information about what's going wrong.
There is a known problem with CDC mode on some machines. If there are communication errors, Windows may stall the endpoint and thus stop polling the device.