Port, board and/or hardware

Arduino Portenta H7

MicroPython version

MicroPython v1.24.1 on 2024-11-29; Arduino Portenta H7 with STM32H747

I am waking machine.lightsleep() in two different ways- using ExtInt() and using time delay. This works as expected for the first iteration, after which the system goes only to timer-based wakeup.

Reproduction

Copy-paste and run the following examples on Arduino Portenta H7 using Arduino Lab for MicroPython

Eg 1:

import machine, pyb

from pyb import LED

red_led = LED(1)
green_led = LED(2)
blue_led = LED(3)

# Callback for ExtInT
def cb():
    pass

# ExtInt()
pin = pyb.Pin("D6", pyb.Pin.IN, pyb.Pin.PULL_DOWN)
ext = pyb.ExtInt(pin, pyb.ExtInt.IRQ_FALLING, pyb.Pin.PULL_DOWN, cb)

# Function called in main loop
def body():
    machine.lightsleep(10*60*1000)

green_led.on()

# Main loop
while True:
    blue_led.on()
    pyb.delay(1000)
    machine.lightsleep()
    blue_led.off()
    pyb.delay(1000)
    red_led.on()
    pyb.delay(1000)
    red_led.off()
    machine.lightsleep(10000)

Eg 2:

import machine, pyb

# Callback for ExtInT
def cb(_):
    pass

# ExtInt()
pin = pyb.Pin("D6", pyb.Pin.IN, pyb.Pin.PULL_DOWN)
ext = pyb.ExtInt(pin, pyb.ExtInt.IRQ_FALLING, pyb.Pin.PULL_DOWN, cb)

# Function called in main loop
def body():
  machine.lightsleep(10000)
  pyb.LED(3).on()
  pyb.delay(5000)
  pyb.LED(3).off()
  

# Main loop
while True:
  pyb.LED(1).on()
  pyb.delay(5000)
  pyb.LED(1).off()
  
  machine.lightsleep()

  pyb.LED(2).on()
  pyb.delay(5000)
  pyb.LED(2).off()
  
  body()

Expected behaviour

After the first iteration, the device should wakeup on external interruption as well as timer.

Observed behaviour

After the first iteration, the device wakes up only on timer.

Additional Information

No, I've provided everything above.

Code of Conduct

Yes, I agree