This repository was archived by the owner on Sep 16, 2024. It is now read-only.
Lopy4 unable to start WLAN.AP - Guru Meditation error: core 0 panic'ed (instrfetchprohibited) #314
Open
Description
Hello everyone,
I'm using a Lopy4 board.
Firmware:
(sysname='LoPy4', nodename='LoPy4', release='1.18.2.r7', version='v1.8.6-849-df9f237 on 2019-05-14', machine='LoPy4 with ESP32', lorawan='1.0.2', sigfox='1.0.1')
I have more than 8 Lopy4 with the same problem.
The boards are getting damaged, and I can't realize the reason yet.
- The problem is that when trying to start the WLAN Access Point the board crashes and prints the "Guru Meditation error: core 0 panic'ed (instrfetchprohibited)" error.
- I thought that it was because of any wrong line on my code, so I deleted everything from the boards and even updated the pycom firmware to the last version in order to fix them, but the boards are still crashing.
- Lopy4 launches the WLAN.AP by default on boot, so with this problem the boards are unusefull because they fall in to a loop in which they reboot all the time.
- In order to recover the boards, I had to become creative to achieve running "wifi_on_boot(False)" before they reboot, so they quit crashing because they are not launching the WLAN.AP on boot.
- It's difficult to diagnose because some times the rebooting happens inmediatelly, while in others it takes some time to crash... WITHOUT MOVING ANYTHING OR RUNNING ANY LINE!
Any idea?
Hope you do.
Thanks!