Wakeup Core2 v1.1 by USB and GPIO possible?
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Hello together,
I want to put the device into deep sleep and wake it up either when USB power supply is connected or when PIR (connected on Grove port) detects movement.
Is this possible?
From what I understand, axp2101 "wakes up" the device on USB-connect by simply powering on the esp32. This should only work, when esp32 power supply was switched off previously. In my context, I cannot power off esp32, because it should react on PIR detection during deep-sleep.
In my opinion, putting the esp32 in deep sleep makes it impossible to recognize switched-on USB power supply. Unfortunately, IRQ from axp2101 is not routed to esp32...
Therefore, is my request realizable? Am I missing something?Thank you
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@davincino
i think you can get some inspiration from this sketch!
https://github.com/m5stack/M5StickC-Plus/blob/master/examples/Advanced/IMU_Wake_On_Motion/IMU_Wake_On_Motion.ino -
@kuriko
Thank you for your hint. However, I don't know how it could help to solve my requirements.
In M5StickC-Plus example, IMU will remain powered on and will send interrupt on gpio 35 on motion.
In my requirement, axp2101 could send interrupt on power-on (usb), but its interrupt pin is not connected to esp32.
AXP2101 usually wakes up esp32 by simply powering on esp32, it is not a real wake up by interrupt. Therefore, wake up by power-on (usb) works only if esp32 was powered off by axp2101 previously. I cannot power-off esp32 because it should also wake up on gpio interrupt from PIR.
