How to use sleep / dormant

[drakejest]

Hello I would like to sleep my rp2040, doing it the raspberry way of compiling all that is needed to have access to the sleep functions is to include

#include "pico/sleep.h"

But of course the arduino IDE throws an error when i include that. I can already see the sleep library in the pico-extra, but i do not know how to include it in my sketch file.

Thank you for the help

[drakejest]

I have not noticed immediately but for those also interested in these modes earl has instruction on how to do it here #345

Quoting him

In the short term I'm unfortunately occupied with other things, but to access the pico-extra sleep functions should be possible with some simple modifications to the core. (This is also for #344)

Basically, you will need to rebuild libpico.a to include the pico_sleep directory and add the proper include path to platform_inc to let the IDE fine the proper headers.

1. Add the pico_sleep line to the Cmakefile.txt:   https://github.com/earlephilhower/arduino-pico/blob/master/tools/libpico/CMakeLists.txt

2. Rebuild libpico.a by running make-libpico.sh  https://github.com/earlephilhower/arduino-pico/blob/master/tools/libpico/make-libpico.sh

3. Add the pico-extras/pico_sleep path to pl;atform_inc.txt:  https://github.com/earlephilhower/arduino-pico/blob/master/lib/platform_inc.txt  (the format is a little off but should be obvious)

Restarting the IDE should then give the ability to #include <pico/sleep.h> and call the functions exported there. Note that I have not looked deeply at this and it is in the extras repo so it may not be 100% working from the RPi folks,yet. I have a feeling you'll need to do things like save/restore all active clocks, set which clocks to disable in sleep mode, and make sure I/Os are set to appropriate drive strengths/inputs.

[yaswanthsk04]

Hi @drakejest :

Can you share me the pre-built core which includes sleep modes.

I am pretty new to the world of Cores and Compilation.

This would help me kick start me project as I am facing hard deadlines

Thanking you in Advance,
Yaswanthsk04