esp32: light sleep with time alarm returns immediately if web workflow is enabled

[jepler]

CircuitPython version

Adafruit CircuitPython 8.0.0-alpha.1-54-g8b30f0120-dirty on 2022-07-14; Adafruit Feather ESP32 V2 with ESP32

Code/REPL

import alarm
import time

while True:
    now = time.monotonic()
    target = now + 5
    print(f"Doing work from {now=} until {target=}")
    while time.monotonic() < target: sum(range(100))
    
    target = now + 20
    print(f"Light sleeping from {now=} until {target=}")
    time_alarm = alarm.time.TimeAlarm(monotonic_time = target)
    print(f"{time_alarm=}")
    alarm.light_sleep_until_alarms(time_alarm)
    after = time.monotonic()
    print(f"{after=}, {'EARLY' if after < target else 'OK'}")

Behavior

Typical output:

Deep sleeping from now=479.346 until target=499.346
time_alarm=<TimeAlarm>
after=479.355, EARLY

Description

Only while using web workflow including #6591 -- if I comment out the SSID setting in .env and reset then it works. Doesn't matter if I've connected to circuitpython.local or not.

Additional information

No response

[RetiredWizard]

I grabbed the latest bits for the Feather Huzzah32 from the S3 server and got this as output: (with Web Workflow enabled and connected)

 Doing work from now=53.316 until target=58.316
 Light sleeping from now=53.316 until target=73.316
 time_alarm=<TimeAlarm>
 <TimeAlarm>
 after=73.318, OK

I modified your loop slightly to suppress the printing of the "sum(range(100))" value.

The output you referenced seems to be from a slightly different loop though.

[tannewt]

I'm unable to reproduce this.