stm32h747xih6: issue with FreeRTOS / TIM3 as scheduler time base

[Sanjay22]

stm32_IEC_project_CM7.elf [cores: 0]
Thread #1 [main] 1 [core: 0] (Suspended : Signal : SIGTRAP:Trace/breakpoint trap)
0xfffffffe
<signal handler called>() at 0xfffffff1
HAL_TIM_IRQHandler() at stm32h7xx_hal_tim.c:3,777 0x8055b74
TIM3_IRQHandler() at stm32h7xx_it.c:185 0x804a352
<signal handler called>() at 0xfffffffd
prvPortStartFirstTask() at port.c:267 0x8065f78
xPortStartScheduler() at port.c:379 0x806608c
pxPortInitialiseStack() at port.c:214 0x8065ed0

This is the error which comes suddenly. here i use tim3 as base source for the tick interrupt of task scheduler as replace of  systick. Previously this code works fine. suddenly creates issues in worked hardware itself  . after some time device works and fails randomly but same code what reason

[mƎALLEm · Accepted solution]

Hello @Sanjay22 and welcome to the ST community,

To my knowledge, it's recommended to use system tick timer for FreeRTOS and another GP timer for the HAL.

[Sanjay22]

Hello @mƎALLEm ,Actually gp timer has high resolution as compared to the system tick timer. Any other solution is there related to this?

[mƎALLEm]

Why a higher resolution timer for RTOS time base is needed? what is the constraint?