LPC55S69 : fsl_tickless_rtc

[EugeneHiihtaja]

Hello !

I can see rtos tickless example has implementation of 

void vPortSuppressTicksAndSleep(TickType_t xExpectedIdleTime)

but it never ever is called becouse definition like this is missing:

/* Tickless idle/low power functionality. */
#ifndef portSUPPRESS_TICKS_AND_SLEEP
extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
#define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
#endif

Could you please verify that example and confirm if tthat new RTOS port can be used in teckless mode ?

Thank you !

Regards,

Eugene

[FelipeGarcia]

Hi Eugene,

You are correct, If the FreeRTOS port in use does not provide a default implementation of portSUPPRESS_TICKS_AND_SLEEP(), then the application writer can provide their own implementation by defining portSUPPRESS_TICKS_AND_SLEEP() in FreeRTOSConfig.h.

Please check the below link for more information.

https://www.freertos.org/low-power-tickless-rtos.html

Also check the following thread that can give you more hints regarding this implementation.

Board low power modes, alongside Tickless FreeRTOS

Best regards,

Felipe

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