CC3200MOD: LPDS mode - Can wake-up source only be GPIO?

mugsy

Part Number: CC3200MOD

I am trying to get my device into LPDS mode. I am using the pm framework and following the ide_profile example. But I do notice that the example uses a timer and the gpio as a wake-up source. So I searched around the examples and found that the wake-up source was either host IRQ, rtc or rtc& gpio never just gpio. I saw no examples where the gpio was the only wake-up source. In my implementation, I only want to wake up with GPIO24 when it is low. I can't seem to get my program to return from RestoreInfoSet. Any ideas why? Has anyone successfully gotten LPDS mode to work with just a gpio as the wake-up source? Any help is appreciated!

over 6 years ago

0 Kobi Leibovitch over 6 years ago

TI__Guru 61386 points

Hi Mugsy,

If you set it to wake up on rtc & gpio, can you then wake on the same GPIO ?

br,
Kobi

0 mugsy over 6 years ago in reply to Kobi Leibovitch

Intellectual 255 points

Also, as I'm stepping through the code I see the check for are_irqs_pending() .... my unit is always returning yes there are irqs ... so I have bypassed the check and gone straight to sleep but will that affect my ability to wake-up?

Also, I have one main task running in my code and want sleep to be part of that task. Does the sleep funcitionality need to be it's own task?

Thank s!

0 Kobi Leibovitch over 6 years ago in reply to mugsy

TI__Guru 61386 points

Hi Mugsy,

You should handle the events and clear the interrupts in order for the interrupt to wake you up.
Check the source of the pending IRQ and try to understand why it is always asserted.
It is better you use the pm_framework (see processors.wiki.ti.com/.../CC3200_Power_Management_Framework) as demonstrated in the idle_profile example.

Br,
Kobi

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CC3200MOD: LPDS mode - Can wake-up source only be GPIO?