Skip to content

Hard Fault after successful mDNS Query and program exit #10197

Description

@aaron97neu

CircuitPython version and board name

Adafruit CircuitPython 9.2.6 on 2025-03-23; Adafruit Feather ESP32S2 with ESP32S2

Code/REPL

#!/usr/bin/env python3
import wifi
import mdns

import alarm

import time
import os

ssid = os.getenv("WIFI_SSID")
password = os.getenv("WIFI_PASSWORD")

wifi.radio.connect(ssid, password)

mdns_svr = mdns.Server(wifi.radio)
services = mdns_svr.find(service_type="_mqtt", protocol="_tcp", timeout=5)

wake_alarm = alarm.time.TimeAlarm(monotonic_time=time.monotonic() + 300)
alarm.exit_and_deep_sleep_until_alarms(wake_alarm)

Behavior

0;🐍Wi-Fi: No IP | main.py | 9.2.60;🐍192.168.50.199 | Done | 9.2.6
Code done running.
Auto-reload is off.
Running in safe mode! Not running saved code.

You are in safe mode because:
CircuitPython core code crashed hard. Whoops!
Hard fault: memory access or instruction error.                                                                
Please file an issue with your program at github.com/adafruit/circuitpython/issues.                            
Press reset to exit safe mode.                                                                                 
                                                                                                               
Press any key to enter the REPL. Use CTRL-D to reload.  

Confirmed after storage.erase_filesystem() reset with no libraries loaded

Description

Running without services = mdns_svr.find(service_type="_mqtt", protocol="_tcp", timeout=5) results in expected behavior, have not tested with alternate sleep modes

Additional information

Specifically ESP32S2 w/ BME280 sensor and 2.13" HD Tri-Color eInk display attached. However, these devices are not interacted with when triggering the fault

No response

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

Type

No type

Projects

No projects

    Milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions