[ECOS] EB40 serial read

Jonathan Larmour jifl@eCosCentric.com
Fri May 23 00:57:00 GMT 2003


Xavier Thomas wrote:
> Hello
> 
> I'm working with a AT91EB40 board and I try to receive data from de 
> serial port.
> The write work correctly but the read block the program. I load the 
> program with
> gdb and I start it with minicom and redboot.
[snip]

Your program runs entirely from cyg_user_start. As described in the 
documentation, the kernel hasn't started yet, and in particular interrupts 
aren't enabled so it's no surprise it doesn't work!

Run your program from a thread, not from cyg_user_start, or enable 
interrupts manually.

Jifl
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