LPC54606 Deep Sleep, Utick0 interrupt

santosh1 — Thu, 20 Dec 2018 20:12:11 GMT

Hello,

I am trying to wakeup a LPC54606 from deep sleep using utick0 timer. Here are the snippets of my initialization.

#define EXCLUDE_FROM_DEEPSLEEP (SYSCON_PDRUNCFG_PDEN_SRAMX_MASK|\
SYSCON_PDRUNCFG_PDEN_SRAM0_MASK|SYSCON_PDRUNCFG_PDEN_SRAM1_2_3_MASK| \
SYSCON_PDRUNCFG_PDEN_WDT_OSC_MASK)

// I am calling POWER_EnterDeepSleep with the above exclude mask.

POWER_EnterDeepSleep(EXCLUDE_FROM_DEEPSLEEP);

Here is the micro-tick related initialization:

// Setup wake pin.
SYSCON->STARTERSET[0] |= SYSCON_STARTER_UTICK_MASK; /* GPIO pin interrupt 0 wake-up. */
EnableDeepSleepIRQ(UTICK0_IRQn);

utick0 is initialized using the fsl interface functions.

I am toggling an LED in the IRQ handler - i can see the current consumption dropping - but i was expecting the LED to still toggle after the controller has gone into low power. And of course, i never come out of the low power mode at all.

Would appreciate any pointers on where the configuration is going wrong.

Thanks

topic LPC54606 Deep Sleep, Utick0 interrupt in LPC Microcontrollers

LPC54606 Deep Sleep, Utick0 interrupt