Hey there!
We are using ChibiOS with nanoFramework on a custom STM32F427 based MCU board. Now we face the problem that the software blocks at random times and triggers a hardware reset. Everytime the software freezes, we are in the timer handler, which is used for the systick. The disassembly revealed, that we branch to a register which contains a null pointer and then run into a usage fault.
The corresponding code is at line 430 in /os/rt/include/chvt.h
/* The callback is invoked outside the kernel critical zone.*/
chSysUnlockFromISR();
fn(vtp->par);
chSysLockFromISR();
Any ideas why this happens?
STM32 Systick function call fails
-
martinkuhn
- Posts: 5
- Joined: Mon Oct 07, 2019 1:24 pm
- Been thanked: 1 time
-
Giovanni
- Site Admin
- Posts: 14891
- Joined: Wed May 27, 2009 8:48 am
- Has thanked: 1202 times
- Been thanked: 996 times
Re: STM32 Systick function call fails
Hi,
It should not happen, try enabling debug options in chconf.h (assertions, checks, state checker, stack overflow, note there is a port option for stack overflow with MPU, enable that too).
It could be a stack overflow corrupting memory, what you are looking at is likely the effect not the cause.
Giovanni
It should not happen, try enabling debug options in chconf.h (assertions, checks, state checker, stack overflow, note there is a port option for stack overflow with MPU, enable that too).
It could be a stack overflow corrupting memory, what you are looking at is likely the effect not the cause.
Giovanni