MSPM0L1305-Q1: How to know the wake up source?

Steve Lim

Part Number: MSPM0L1305-Q1

Tool/software:

Hi Champs,

Is there any register that can identify the wake up source?
I'm using standby low-power mode with __WFI() function. But I faced an unexpected wake up situation, so I want to know which source caused the MCU to waked up.

Thanks,
Steve

4 months ago

0 Diego Abad Sajamin 4 months ago

TI__Mastermind 20122 points

Hi Steve,
I think that using flags inside your ISRs will be the easiest way to track which Interrupt was triggered to wake the device up. You can even add a counter to monitor how many times this happens.

Best Regards,

Diego Abad

0 Steve Lim 4 months ago in reply to Diego Abad Sajamin

TI__Intellectual 2925 points

Hi Diego,
Thank you for your answer.
In the GPIO settings, even though the interrupt is enabled, the interrupt can't be triggered and can't wake up from low-power mode if the Trigger polarity is disabled. Is it correct?

Regards,
Steve

+1 Diego Abad Sajamin 4 months ago in reply to Steve Lim

TI__Mastermind 20122 points

Hi Steve,
You will be correct. Normally, you'll need to set an specific edge to wake the device from the GPIOs.

Best Regards,

Diego Abad

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MSPM0L1305-Q1: How to know the wake up source?