Use keypad for wakeup (kbd_matrix) from deep sleep (sys_poweroff)

RE: Use keypad for wakeup (kbd_matrix) from deep sleep (sys_poweroff)

Crox — Wed, 16 Apr 2025 13:57:16 GMT

Apologies, somewhere between posts my prj.conf had reverted. The above suggestion from Kenneth works. Ensure prj.conf has:

CONFIG_PM=y
CONFIG_PM_DEVICE=y

RE: Use keypad for wakeup (kbd_matrix) from deep sleep (sys_poweroff)

Crox — Tue, 15 Apr 2025 18:44:19 GMT

Hello Kenneth - sorry for the very long delay on this response.

I have added the suggested sense-edge-mask and still do not wake up the device. The kbd_matrix is same as before. I have gpio1 as:

&gpio1 {

status = "okay";

sense-edge-mask = <0xFFFFFFFF>; // Set to "1" for those pins that are used for interrupt and wakeup.

};

RE: Use keypad for wakeup (kbd_matrix) from deep sleep (sys_poweroff)

Kenneth — Thu, 20 Mar 2025 16:36:02 GMT

Not sure what you mean by overload, but I can't think of reasons that this should fail no, unless the changes occur so fast that they are simply missed by the software.

Kenneth

RE: Use keypad for wakeup (kbd_matrix) from deep sleep (sys_poweroff)

Crox — Thu, 20 Mar 2025 13:25:03 GMT

Sure, I can try. One point of clarification, I have no other GPIO except for gpio1 as described for the keymap. Is it possible to overload them in this way? At runtime I would just define it as interrupt?

RE: Use keypad for wakeup (kbd_matrix) from deep sleep (sys_poweroff)

Kenneth — Thu, 20 Mar 2025 13:21:36 GMT

Hi,

For low power interrupt and wakeup, I recommend to use sense-edge-mask for those pins, e.g.:

&gpio0 { // Depend on the port.

...

sense-edge-mask = <0xFFFFFFFF>; // Set to "1" for those pins that are used for interrupt and wakeup.

};

Can you try this?

Kenneth