On Sun, 17 Jun 2012 16:43:02 +0200 "Jesper K. Pedersen" <li...@famped.dk> wrote:
> I am at my wits end getting the twothreads example working on my > Olimex P256 board (AT91SAM7S256 based). > > Calling the cyg_mutex_init does not return. Also I notice that the > call to the printf line before the call to cyg_mutex_init prints > extremely slow on my terminal. > > I have set the default console up to tty0 going to ser0. This part > works fine with my other software running on the board (normal > expected transmission speed). > > Are there any "gotcha'" involving threading on the AT91 series > microcontrollers? > Problem was solved. For some reason if you put any output function (printf's) in the cyg_user_start the threading will hang. Removing all output will allow for threading and the example works as expected. I wonder if this is intended or if its a bug in the A91SAM7 eCos. Best regards JesperKP -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
