esp32 wake from sleep via interrupt then return to sleep

rktuttle
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Joined: Fri Apr 17, 2020 9:44 pm

esp32 wake from sleep via interrupt then return to sleep

Postby rktuttle » Fri Apr 17, 2020 11:10 pm

I would like to put esp32 into light sleep mode then be able to wakeup via ext interrupt. Next, I want to resume the sleep cycle. My attempts restart sleep cycle after interrupt is serviced. Problem is that a new sleep cycle is started after each interrupt.

Agree007
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Re: esp32 wake from sleep via interrupt then return to sleep

Postby Agree007 » Sat Apr 18, 2020 11:48 am

Thats the way it works, you will have to save you state and other required data, before going to sleep and the reload data when it wakes up.

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fasani
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Re: esp32 wake from sleep via interrupt then return to sleep

Postby fasani » Mon Apr 20, 2020 3:01 pm

Yes I agree with that.
Do you think is a good idea to use the Preferences class to save state?
epdiy collaborator | http://fasani.de Fan of Espressif MCUs and electronic design

Agree007
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Re: esp32 wake from sleep via interrupt then return to sleep

Postby Agree007 » Mon Apr 20, 2020 5:54 pm

fasani wrote:
Mon Apr 20, 2020 3:01 pm
Yes I agree with that.
Do you think is a good idea to use the Preferences class to save state?
The Preferences class is very easy to use and control, so in most cases I would use it, but it migth depend on what else you code does and require.

rktuttle
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Joined: Fri Apr 17, 2020 9:44 pm

Re: esp32 wake from sleep via interrupt then return to sleep

Postby rktuttle » Thu Apr 23, 2020 10:04 pm

Thank you both for your replies. I am new to this and will have to learn about the Preference class. Will do a google search.
Thanks again.

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