High current consumption in deep sleep: 80 mA

[averri]

Hi, I'm testing GPy on deep sleep mode, and the current consumption is around 80 mA. I was expecting something in the uA range, do you know what's wrong?

I'm invoking the deep sleep with:

import machine

machine.deepsleep(10000)

I have a boot.py file with WiFi configuration. I'm using GPy v1.0.

[robert-hh]

@averri You have to de-init the LTE modem.

[averri]

It does not work. I'm using the following code:

import pycom
import time
import json
import machine
from mqtt import MQTTClient
from network import WLAN, LTE


def sleep(millis):
    print('Going to sleep...')
    lte = LTE()
    lte.deinit()
    machine.deepsleep(millis)


def handler(topic, data):
    print(topic, data)
    payload = json.loads(data.decode('utf-8'))
    msg = payload['msg'] if 'msg' in payload else None
    if msg == 'deepSleep':  # Here we enter deep sleep.
        sleep(10000)


def connect_mqtt():
    """Connects to the MQTT queue."""
    print('Connecting to the MQTT server...')
    c = MQTTClient('alex-device', 'xxx', port=1883, user='xxx', password='xxx')

    c.set_callback(handler)
    c.connect()

    c.publish('inTest', 'Device connected!')
    c.subscribe('outTest')

    return c


def wait_for_wlan():
    while True:
        if WLAN().mode() == WLAN.STA:
            break
        else:
            time.sleep(0.5)


def main():

    wait_for_wlan()

    c = connect_mqtt()

    while True:
        time.sleep(0.5)

        # Check MQTT message.
        c.check_msg()


if __name__ == '__main__':
    main()

The result:

Going to sleep...
Traceback (most recent call last):
  File "main.py", line 112, in <module>
  File "main.py", line 95, in main
  File "mqtt.py", line 206, in check_msg
  File "mqtt.py", line 193, in wait_msg
  File "main.py", line 34, in handler
  File "main.py", line 15, in sleep
OSError: the requested operation failed
Pycom MicroPython 1.18.0.r1 [v1.8.6-849-9569a73] on 2018-07-20; GPy with ESP32
Type "help()" for more information.

[averri]

@robert-hh The LTE deinit is not working, please see the message above.

[jcaron]

@averri Do you have a SIM card in the module? IIRC LTE.deinit() won't work without one.

[averri]

@jcaron No, I don't have a SIM card. Is it possible to disable the LTE without the SIM card?

[serafimsaudade]

I'm having the same problem. When I arrive at home a will insert a SIM card and check if the current consumption decrease.

Update:

I have insert a SIM card. And make lte.deinit() and de current consumption in deepsleep drop to 0.022 mA.

[andreas]

@averri said in High current consumption in deep sleep: 80 mA:

OSError: the requested operation failed

We just mitigated this through [1] by invoking lte.deinit() with the "reset" operation like

lte.deinit(detach=False, reset=True)

[1] https://github.com/hiveeyes/hiveeyes-micropython-firmware/commit/ec7c80e1219fb119c2881a0019cecdfad220f29f