QUERY · ISSUE

Esp8266 doesn't execute code after woke up from deep sleep

openby lazarvgdopened 2021-03-05updated 2026-03-24

port-esp8266proposed-close

I have a problem with waking ESP8266 from deep sleep. Here is my code that i run:

import network
import machine
import time
from machine import RTC
import ntptime
from wdt import WDT

def deep_sleep(msecs):
  #configure RTC.ALARM0 to be able to wake the device
  rtc = machine.RTC()
  rtc.irq(trigger=rtc.ALARM0, wake=machine.)
  # set RTC.ALARM0 to fire after Xmilliseconds, waking the device
  rtc.alarm(rtc.ALARM0, msecs)
  #put the device to sleep
  machine.deepsleep()

wdt=WDT()
led = machine.Pin(2, machine.Pin.OUT)

sta_if = network.WLAN(network.STA_IF); sta_if.active(True)
sta_if.scan()                             # Scan for available access points
sta_if.connect("TS-C99W", "VyHPS8ZJ") # Connect to an AP
sta_if.isconnected()    
print(sta_if.isconnected())
rtc = RTC()

while True:
    if machine.reset_cause() == machine.DEEPSLEEP_RESET:
        print('woke from a deep sleep')
    else:
        print('power on or hard reset')
    for i in range(10):
        led.off()
        time.sleep(1)
        led.on()
        time.sleep(1)
    print(sta_if.isconnected())
    ntptime.settime() # set the rtc datetime from the remote server
    print(rtc.datetime())    # get the date and time in UTC
    time.sleep(0.25)
    deep_sleep(20000)
    wdt.feed()

The output that I am getting is this:

The board that I am using is this:

I am not sure why is this happening? What am I doing wrong?
Please help me to solve this issue.

Thanks

CANDIDATE · ISSUE

ESP32 module wake on touch, wake on ext1

openby tahouseopened 2018-08-17updated 2019-05-28

port-esp32

Hi there,

I'm running MicroPython v1.9.4-409-g434975def and have successfully used a Pin irq to wake from deep sleep and can confirm the wake reason:

import machine
from machine import Pin, TouchPad, deepsleep
import time

wake = Pin(14, mode = Pin.IN, pull = Pin.PULL_DOWN)
wake.irq(trigger=Pin.WAKE_HIGH, wake = machine.DEEPSLEEP)

time.sleep(5)
deepsleep(5*1000)

after bringing Pin 14 line up to 3V3

Reset cause:  DEEPSLEEP_RESET
Wake reason:  PIN_WAKE/EXT0_WAKE

Now I'm trying to do the same but with a TouchPad input:


from machine import Pin, TouchPad, deepsleep
import time
import esp32

wake = Pin(14, mode = Pin.IN)
touch = TouchPad(wake)
touch.config(500)
esp32.wake_on_touch(True)

time.sleep(5)
deepsleep(5*1000)

(after 5 seconds and touching/untouching wire to Pin 14)

Reset cause:  DEEPSLEEP_RESET
Wake reason:  TIMER_WAKE

The range of my touch.read() values are around 700 when untouched, and down to around 100 when touched. I've tried adjusting the touch.config to various settings but I cannot get my ESP32 to wake from touch.. only from timer in this mode.

Lastly,
I've tried using wake_on_ext1

import machine
from machine import Pin, TouchPad
import time
import esp32
wake = Pin(14, mode = Pin.IN, pull = Pin.PULL_DOWN)
esp32.wake_on_ext1(pins = [wake], level = Pin.WAKE_HIGH)

time.sleep(5)
deepsleep(5*1000)

But this resets immediately regardless of whether I bring Pin 14 high or not (not in touch mode, mind you).

Reset cause:  DEEPSLEEP_RESET
Wake reason:  EXT1_WAKE

I've browsed through the esp32 module code, but I'm not sure if any of the wake modes work?

Any ideas?

Esp8266 doesn't execute code after woke up from deep sleep

ESP32 module wake on touch, wake on ext1

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