How do I get the wake source for K344

ZDDL — Thu, 28 Nov 2024 14:42:46 GMT

I looked at the S32K3 Low Power Management AN and demos, but those demos uses DS3.4, which I couldn't open and compile. Is there a demo of DS3.5 available?

I have a problem with low power Management. After the MCU is awakened, the reset type obtained by using Power_Ip_GetResetReason() is MCU_WAKEUP_REASON, and this is correct. But when I used Wkpu Ip GetInputState() to get the wake source, I didn't get the correct result. I don't know why.

This is my test project. I hope someone could help me.

Thanks!

Re: How do I get the wake source for K344

Julián_AragónM — Thu, 28 Nov 2024 21:04:22 GMT

Hi @ZDDL,

You can refer to the following examples: S32K3 Low Power Management AN and demos RTD 4.0.0 & 5.0.0 - NXP Community.

For the wakeup source, please try reading the registers directly:

uint32_t WISR_Value; uint32_t WISR64_Value; void WKPU_Handler(void) { /*store the WISR value which indicate the wake up source.*/ WISR_Value = IP_WKPU->WISR; WISR64_Value = IP_WKPU->WISR_64; if(MCU_WAKEUP_REASON == Power_Ip_GetResetReason()) { printf("Reset reason = MCU_WAKEUP_REASON\r\n"); } printf("WISR = %"PRIu32",", WISR_Value); printf("WISR64 = %"PRIu32".\n", WISR64_Value); /*Clear the flag by writing 1.*/ IP_WKPU->WISR = 0xffffffff; IP_WKPU->WISR_64 = 0xffffffff; __asm("dsb"); __asm("isb"); }

Best regards,
Julián

topic How do I get the wake source for K344 in S32K

How do I get the wake source for K344

Re: How do I get the wake source for K344