Host MCU wake up by GPIO Pin

[erich@bieris.net]

Hi,

How can I configure the ESP32 with AT commands that when it receives a MQTT message it wakes up from sleep and then wakes up the host MCU via GPIO pin?

Sequence
1. put ESP32 in light sleep
2. put host MCU into sleep
3. MQTT message is received by ESP32
4. ESP32 pulls GPIO pin x from high to LOW
5. host MCU wakes up
6. ESP32 sends message to host MCU

Best regards,
Eric

[ESP_Sun]

Hi,

You can understand this command AT+USERWKMCUCFG (https://docs.espressif.com/projects/esp ... kes-up-mcu), maybe it can meet your needs.