Hello Reinhard,
...
Back to the problem... In my opinion, my USART configuration is correct. I still have no idea, why there is no output on DBGU.
I am at a loss there, too.
Which USART is the output coming from instead? Is it really console output or maybe some other, independent pulses?
I don't know, to which USART the output goes. I guess you assume, my "GPIO debugging" was to meassure the pulses on the USART pins. But no, my GPIO debugging was as follows: -set gpio pin with led attached -send characters by puts() (wherever it goes) ;-) -reset gpio pin -measure time between high- and low- rising edge on gpio pin -calculate baudrate
(on DBGU pin, there is no pulse at all past starting U-Boot)
Can you verify that the value for ATMEL_BASE_DBGU in at91sam9263.h is correct?
Yes, according to datasheet, Debug Unit Control Register (DBGU_CR) is located at 0xFFFFEE00. And in at91sam9263.h is defined: #define ATMEL_BASE_DBGU 0xffffee00
Are you using the actual driver source? It should have lines like atmel_usart3_t *usart = (atmel_usart3_t*)CONFIG_USART_BASE; at the begin of each function.
Yes, I'm using the driver with your changes from 2010-11-03 16:32:56
Best Regards, Reinhard
Best Regards, Daniel