Nucle-L4R5ZI Hard Fault Timer with Output Channel

[MMuet.1]

I use the NUCLEO-L4R5ZI Evaluation Board.

I use STM32CubeIDE with HAL and gcc.

When i activate an Timer Output Channel (I have tried it with Output Compare, PWM, Forced Output) i get a Signal:0 in the gdb after the Timer init (e.g. after call of MX_TIM16_Init())

If i don't use Output Channel or when i use an Input Channel for Timer everything works fine.

I have this behaviour with all timers.

For testing i have disabled the NVIC interrupt but this doesn't fix this strange-error.

Is it possible that the timer output calls some function that is not defined ?

I use APB1 and APB2 clock with 8 MHz.

Thanks for your reply.

[Tesla DeLorean · Accepted solution]

That's in the System ROM

Check the BOOT0 pin is low, check SCB-VTOR set to your base location.

For the L4R5ZI there might be an option byte issue, BFB2 ? PEMPTY ?

https://community.st.com/s/question/0D53W00000HMNt8/stm32l4r5zi-is-it-possible-to-erase-a-page-and-write-a-double-word-in-flash-

https://community.st.com/s/question/0D53W00000raYd2SAE/intermittent-break-at-address-0x1fff51f4-with-no-debug

[MMuet.1]

Thanks for your reply.

It really seems to be the not properly cleared PEMPTY flag by the flash loaders.

After i have patched STM32CubeIDE everything works fine.

This bug has me really made debug for 10 hours :squinting_face_with_tongue:.

I wonder why my application runs okay until i use the timer output