Stm32CubeMX change to systick priority cause hardware failure

[Antonio Alberto Iznaga Marín]

Posted on April 05, 2017 at 16:45

Hi, I'm using stm32CubeMX v4.20 and after changing systick priority to 15(lowest) my project runs into hardware failure. If i changed back to zero, problem disappears. Any Inside on why?

best regards,

Tony

[Tesla DeLorean]

Posted on April 05, 2017 at 17:41

>>

Any Insight on why?

You have higher priority code blocking on HAL_Delay(), which is waiting on a variable incremented by SysTick? You block, interrupt can't preempt.

This really should have been implemented using a free running timer's counter.