I am using following ESP32 boards and now started to encounter board reset-error called “Guru Meditation Error: Core 1 panic’ed (InstrFetchProhibited). Exception was unhandled.”
Could you help us to solve this problem?
- Boards causing this problem: WeMos D1 R32 ESP32-WROOM-32D
- Problem: 2 boards were working fine few days. But when I added one additional board with the same code in the WiFi router, all boards started rebooting and repeat the following message. Now they they never work with the code.
......... WiFi connected IP address: 192.168.0.11 connecting to proxy:192.168.40.12 Requesting URL: GET http://mdk-translation.com/dit/teacherStatus_iot.php HTTP/1.1 Guru Meditation Error: Core 1 panic'ed (InstrFetchProhibited). Exception was unhandled. Core 1 register dump: PC : 0x36642d41 PS : 0x00060430 A0 : 0x800d2b78 A1 : 0x3ffb1f50 A2 : 0x3ffc123c A3 : 0x0000004b A4 : 0x3ffc123c A5 : 0x3ffc24e4 A6 : 0x3ffb1f1c A7 : 0x3ffb1f1c A8 : 0x8013d269 A9 : 0x3ffb1f30 A10 : 0x3ffc123c A11 : 0x3ffb1f5f A12 : 0x00000001 A13 : 0x00000900 A14 : 0x3ffb1ee0 A15 : 0x00000008 SAR : 0x00000019 EXCCAUSE: 0x00000014 EXCVADDR: 0x36642d40 LBEG : 0x4000c2e0 LEND : 0x4000c2f6 LCOUNT : 0xffffffff Backtrace: 0x36642d41:0x3ffb1f50 0x400d2b75:0x3ffb1f80 0x400d5751:0x3ffb1fb0 0x400883cd:0x3ffb1fd0 Rebooting... ets Jun 8 2016 00:22:57
The guru meditation error is very difficult to troubleshoot.
Many times it may be cause by bad USB cable, not enough power or inappropriate use of GPIOs. It may also have other reasons that are not easy to identify.
Do you have any peripherals connected to your boards?And what code are you running?