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STM32F746GDISCOVERY _unhandled_exception problems
Posted: Fri Apr 15, 2016 2:59 pm
by rolanddixon
I am having problems with the STM32F746GDISCOVERY board at startup. Execution jumps straight into _unhandled_exception before it gets to main(). I have tried chibios161 and chibios_trunk with GCC 4.7, 4.8 and 4.9. This is happening for all STM32F7 examples in the chibistudio workspace. I have tried changing compiler optimisation values, fpu settings, LTO settings, etc. with no success. Is there anyone else experiencing these problems? Any solutions?
Re: STM32F746GDISCOVERY _unhandled_exception problems
Posted: Fri Apr 15, 2016 3:29 pm
by Giovanni
Hi,
Clock setup is done before reaching the main() function, it is possible that something is happening there.
Can you try another board? it is strange because it is the one I use for general development.
Giovanni
Re: STM32F746GDISCOVERY _unhandled_exception problems
Posted: Sat Apr 16, 2016 8:35 am
by rolanddixon
Thank you for the reply. It's working today and the only thing that I have changed was a firmware update on the st-link/V2. Excited to try this beast out now. I see there is a second round of STM32F7 chips, this time they have ARM's double precision FPU design. Should be interesting...
Re: STM32F746GDISCOVERY _unhandled_exception problems
Posted: Sat Apr 16, 2016 1:10 pm
by Giovanni
Yes, and there should be a 400MHz dual core device later this year, they are moving fast.
Giovanni