ChibiOS Free Embedded RTOS

Hi,

i've got a hardfault while testing my code.
Unfortunately this was a tool in normal use, where I'm not able to get the complete backtrace nor a debugger on it.

The only information I've had:
The SP was at 0x200003E0.
R0 at 0x0801EA4B which is chRescheduleAhead when I'm looking in the map file.

Any idea what could be the reason for this?

It could be anything, are you able to run the code with debug options enabled?

I would look for a stack overflow or a state violation.

Giovanni

Yes, I will try to check this with debug options again.
Unfortunately this occure only once for now, just after a reboot.

How much space should the main stack have? I can see it will go down to 100bytes free.

Just enough, there is no need to keep "free" space.

You should also try to enable HW stack check, there is a port option for that, it is much more reliable than the normal SW check. If the application is critical I recommend keeping stack checking ON in release code.

You may also try to use chSysIntegrityCheckI() in your error handler for some on-field diagnostic.

Giovanni

Thanks for your advice.
I will check some options.