Objective Development Forums

Re: uC seems to be communicating then stops

2012-12-21T11:12:04+02:00

Thank you very much, but I just found it.

I accidentaly put the usbPoll() before my main-Loop. It's embarrasing...

Thanks for your offer

Greetings

Stefan

Statistics: Posted by ScherzkeCks — Fri Dec 21, 2012 11:12 am

Re: uC seems to be communicating then stops

2012-12-21T00:14:26+02:00

Hi Stefan,
Please post the full schematics of the AVR example project that you worked with, I'll try to post the hexfile to make sure there's no hardware issues.

Troubleshooting according to V-USB website:
http://vusb.wikidot.com/troubleshooting

Statistics: Posted by declan smith — Fri Dec 21, 2012 12:14 am

uC seems to be communicating then stops

2012-12-20T16:59:28+02:00

Hi there,

I am new to V-USB and build up this circuit:

I am just trying to turn on and off an LED (basically the first example project).

Now if I look with an Oscilloscope at D+ and D- I see the following for about half a minute:

after that D- (yellow) just goes to 3.12V and D+ to 0V

At no time the device shows up in my Systeminfo.

I probably should mention that my host machine is a Mac and I am trying to access my Device using libusb but I don't even get that far because my System doesn't recognize my uC.

Greetings
Stefan

Statistics: Posted by ScherzkeCks — Thu Dec 20, 2012 4:59 pm