Device waken up from deep sleep after random time

[mp-mba]

Hi,

I'm testing the device as a controller for door sensor. I would like to wake up the device from the deep sleep using esp_sleep_enable_ext0_wakeup. But my problem is the the device is waken up immediately after going to sleep, without any state change on my pin. I was eliminating line by line from examples/new_version/platformio/src/main.cpp code and I've tracked the piece of code that is causing this behaviour:

    pinMode(PWR_PIN, OUTPUT);
    digitalWrite(PWR_PIN, LOW);
    delay(100);
    digitalWrite(PWR_PIN, HIGH);
    delay(1000);
    digitalWrite(PWR_PIN, LOW);

Can you explain to me what is the purpose of those lines of code? Is hard to me to understand it. Sorry for that, I'm still learning. Thanks in advance.

[LilyGO]

Hello. This code starts A7670