Raspberry pi pico w not waking up after machine.deepsleep(60000)

[Zuroy]

Hello folks,
I'm trying to use the machine.deepsleep funtion in my application using a raspberry pi pico w.
The problem is that the board never wakes up from deepsleep.
Below some snippets of my code:

from machine import ADC, Pin
from utime import sleep
import machine, onewire, ds18x20, time
import network
from umqtt.robust import MQTTClient
import json
from DFRobot_MAX17043 import DFRobot_MAX17043
from machine import Timer

def connectWifi():
    #machine.Pin(23, machine.Pin.OUT).high()
    time.sleep(0.1)

    rp2.country('IT')  
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    #wlan.config(pm = 0xa11140)
    time.sleep(0.1)
    wlan.connect('***', '****')    
    max_wait = 10
    while max_wait > 0:
        if wlan.status() < 0 or wlan.status() >= 3:
            break
        max_wait -= 1
        print('Waiting for connection...')
        time.sleep(1)
        
    if wlan.status() != 3:
         print('network connection failed')
    else:
        print('connected')
        status = wlan.ifconfig()
        print( 'ip = ' + status[0] )
         
        
    return wlan




while True:
    machine.Pin("WL_GPIO1", machine.Pin.OUT).high()
    time.sleep(0.5)

    sensor_pwr_pin.value(1)    
    led = machine.Pin("LED", machine.Pin.OUT)
    led.on()
    time.sleep(0.5)
    wlan = connectWifi()
    if wlan.status() != 3:
        print("disconnected")
        wlan.active(False)
        soil_moisture = getSoilMoisture()
        print(soil_moisture)
        #temperature = getAirTemp()
        temperature = 23.5
       

        if soil_moisture <= moisture_threshold+2.5:
            watering_result, soil_moisture_1= watering(irrigazione , moisture_target)
            if watering_result == 1:
                print("Optimal moisture reached")
            elif watering_result == 2:
                print("Can't reach the optimal soil moisture")
            else:
                print("Watering not completed")

    else:        
        
        client = mqtt_connect()    
        client.check_msg()
        time.sleep(0.1)
        soil_moisture = getSoilMoisture()
        #print(soil_moisture)
        #temperature = getAirTemp()
        temperature = 23.5
        
        topic_message = {"temperature": temperature,"humidity": soil_moisture}
        topic_message = json.dumps(topic_message)

        try:
            client.publish(telemetry_pub , topic_message)
        except Exception as e:
            print("Publish Fail")
            print(e)

        

        if soil_moisture <= moisture_threshold+2.5:
            watering_result, soil_moisture_1= watering(0.5 , moisture_target)
            if watering_result == 1:
                print("Optimal moisture reached")
            elif watering_result == 2:
                print("Can't reach the optimal soil moisture")
            else:
                print("Watering not completed")
                
        batteryCharge = getBatteryStatus()
        #batteryCharge = 65.0
        time.sleep(0.5)
        topic_message = {"battery": batteryCharge}
        topic_message = json.dumps(topic_message)

        try:
            client.publish(telemetry_pub , topic_message)
        except Exception as e:
            print("Publish Fail")
            print(e)
        client.disconnect()
        wlan.disconnect()
        wlan.active(False)


    machine.Pin("WL_GPIO1", machine.Pin.OUT).low()
    #machine.Pin(23, machine.Pin.OUT).low()
    sensor_pwr_pin.value(0)
    print('sleep')
    led.off()
    #sleep(120)
     
    machine.deepsleep(60000)

What's wrong with that? Can someone help me?

Thanks.

[karfas]

It's not unlikely that I don't see it, but where in the code do you leave the while True: loop to get to the machine.deepsleep() statement ?

[Zuroy]

machine.deepsleep() statement is inside the while True:. However since machine.deepsleep() restarts the board, maybe I can avoid the while True: loop

[karfas]

Ok. Looks like I'm still not used to python's whitespace syntax.

[kjm1102]

There is mention in ghubcoder/PicoSleepDemo#2 (comment) (Nov 7 2021) of the pico being limited to 127s dormancy. Pico deepsleep is pretty broken which is a shame because a deepsleep that resumes from where it went to sleep in the code (instead of starting again from the beginning like the esp32s) has some interesting possibilities (like all your ram variables being intact after a deepsleep).

ghubcoder did a pretty good job of fixing upython deepsleep problems on the pico for me but it still needs work from a talented programmer to fix a bunch of ugly loose ends.

[Zuroy]

Many thanks. I'll try the solution of that post. I also see that there's an alternative uf2 release with picosleep function. I'll also check whether this release is compatible with the pico w.