USB driver does not work

marcio@netopen.com.br · **Joined:** Sun Sep 20, 2009 9:38 pm **Posts:** 11

I have a custom made AT91SAM7256 board. The USB works fine with SAM-BA. This implies that the hardware is OK. the USb works according to the specification and also as ROM code expects.

However, when I try to run usb-device-cdc-serial demo it does not work. The UDP always get Suspend interrupt and I can never enumerate the device. I have tried to use the external pull-up but nothing happens. I also tried not usie the Pull-up and again nothing happens.

can anybody help me ?

It would be fine if somebidy send me the pice of code of the SAM-BA rom code.

mjbcswitzerland · **Posted:** Fri Sep 25, 2009 5:30 pm

Hi

Check out the uTasker project. This included USB CDC operation as described here:
http://www.utasker.com/docs/uTasker/USB_User_Guide.PDF
Code for SAM7X boards can be loaded from here: http://www.utasker.com/software/software.html - follow guide: http://www.utasker.com/docs/uTasker/uTaskerV1.3_USB_Demo.PDF

Regards

Mark

http://www.uTasker.com

marcio@netopen.com.br · **Joined:** Sun Sep 20, 2009 9:38 pm **Posts:** 11

Thanks but I donÂ´t want to use any OS.

marcio@netopen.com.br · **Joined:** Sun Sep 20, 2009 9:38 pm **Posts:** 11

I solvwe hee probelm. The Pull up was ibnverted and I had to clear the register, wait 500ms and set the Pull up again.

USB driver does not work

Who is online