PIC32 port: System service timer not running properly when it's ISR is deferred

[saikumar.k (Korada sai kumar)]

@cobusve

In Harmony the timer interrupt sets a flag and then the function SYS_TMR_Tasks will be called from within the superloop function SYS_Tasks(). If you enable timer driver interrupts the callbacks will be called from within the hardware timer ISR.

Yes, absolutely you are right!
i am agree with this statement: “If you enable timer driver interrupts the callbacks will be called from within the hardware timer ISR.”.
But as per FreeRTOS documentation, a Non-FreeRtos API shoud not be called from a ISR, then how can i call “callbacks” from hardware timer ISR. I must have to call it from inside a Task. This is what i mean. Hopefully you understand my doubt.
Sorry for troubling you all but i am facing application crash due to this.

Also please refer to this discussion which can explain my intention behind this topic:

Target halted due to a break instruction in user code(Cause=6 means "Instruction bus error")

Hi, I am trying to port FreeRtos to PIC32MZ2048EFH144 micro controller. I was created some small applications and able to use demo applications also. now i integrated the main application code which has 18 application tasks. When i am trying to run all of them, i am getting “Target halted due to a break instruction in user code” error in debugger and “General Exception Instruction bus error (cause=6, addr=a5a5a5a5).” message in console. The below is the execution flow of the tasks running with…

see here also:

SergentSloGinJean Rubillon

Mar 12

@saikumar.k Exception code 6 is mainly caused by either calling a non ISR API function from an ISR or using an application/RTOS object before it has been created.
No one here knows your code so it’s impossible for us to tell you exactly what is wrong with it. Hopefully we’re pointing you in the right direction, as that is the only thing we can realistically do.