Kenneth Watson wrote:
Hi,
I'm starting to develop a usbdcore_at91.c UDC driver so I can use a /dev/usbtty serial device. I just wanted to check if any work has already been started.
Hi Ken,
I took a stab at this a year ago for the AT91RM9200. I never did get it working. As I recall, the main issue was that the AT91 UDP takes care of some low-level protocol in hardware, while the existing usbdcore code does this in software.
Unfortunately, I got pulled away from this work and never did manage to get back to it. I would be happy to send you what I have if you are interested.
Also, in case you missed it, Joey Oravec has managed to get USB serial working on the AT91SAM9261 using sample Atmel code (see http://article.gmane.org/gmane.comp.boot-loaders.u-boot/30079). Joey was kind enough to send me his code and I am in the process of porting it to the AT91RM9200, when I can fit in the time.
Regards, ../fam