RE: [ECOS] Threading on EDB7211

[Gary Thomas <gthomas at redhat dot com>]

On 11-Jun-00 Alfredo Knecht wrote:
> Dear All,
> 
> Thread switching is not working.
> I am using an off-the-shelf configuration for ARM EDB7111-2, with the
> GDB_module stub on the board.
> Specifically, I tested with lcd_test.c, and kthread1.c.
> Only the first thread (in cyg_thread_create() calling order) is ever executed.
> A call to cyg_thread_delay() blocks, and cyg_thread_yield() does not cause
> rescheduling.
> Fidgeting with priorities does not help, either.
> Generally, single-thread code works.
> Must be that thread switching stays disabled in eCos, but since I am using
> a "standard" configuration, I would like to have a second opinion before
> embarking on a deep dive.
> 

Thread switching should work on this and all platforms.

Have you tried any of the standard tests and/or examples?  A good one to
try is the 'bin_sem2' test in the kernel.  This is an adaptation of the
classic dining philosophers and definitely relies on thread switching to
work properly.  On Linux, one would build/run this test like this:

  # ecosconfig new edb7211
  # ecosconfig tree
  # make tests
  # arm-elf-gdb install/tests/kernel/VERSION/tests/bin_sem2
     ... etc.