MCUXpresso IDEのトピックRe: Disable FreeRTOS Systick

Disable FreeRTOS Systick

kaarthick — Thu, 12 Sep 2019 06:29:41 GMT

Hai,

I am using MCUXpresso compiler with MK10DN512VLQ IC.

During Sleep mode i have to disable all modules and also FreeRTOS Systick and i have to wait for other Interrupt.

Can anyone help me how to disable FreeRTOS Systick?

Re: Disable FreeRTOS Systick

BlackNight — Thu, 12 Sep 2019 07:47:37 GMT

Hi Karthik,

I think what you want to do is not usinig SysTick at all, but using a low power timer instead.

See IoT: FreeRTOS Down to the Micro Amps | MCU on Eclipse which uses the Kinetis low power timer instead. This timer is running even in low power mode (usually 1 kHz).

And combine this with the tickless idle mode of FreeRTOS, see Low Power with FreeRTOS: Tickless Idle Mode | MCU on Eclipse

I hope this helps,

Erich

Re: Disable FreeRTOS Systick

kaarthick — Thu, 12 Sep 2019 15:24:36 GMT

How to jump out of vTaskStartScheduler .

I exit from scheduler and move to while loop

Re: Disable FreeRTOS Systick

BlackNight — Fri, 13 Sep 2019 07:34:08 GMT

Hi Karthik,

not sure if I understand?

If the call to vTaskScheduler() is not sucessful (check the return code), most likely you have not enough heap allocated and creating the IDLE task failed.

If you want to terminate the scheduler you need a FreeRTOS port which implements that functionality. You can see this in my port here: FreeRTOS: how to End and Restart the Scheduler | MCU on Eclipse

I hope this helps,

Erich