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SIM800L Guru Meditation Error

Q&A Forum › Category: ESP32 › SIM800L Guru Meditation Error
0 Vote Up Vote Down
NUR AZLIN AIRUL AZLIN MOHAMED ZOHDI asked 4 years ago

Hi Sara & Rui,
I got this error message after some 23 reboot from deep sleep. Any idea why?
14:35:13.978 -> Modem: SIM800 R14.18
14:35:15.193 -> Modem Name: SIMCOM SIM800L
14:35:15.193 -> Connecting to APN: max4g
14:35:16.735 -> Guru Meditation Error: Core 1 panic’ed (IllegalInstruction). Exception was unhandled.
14:35:16.735 -> Memory dump at 0x400d2a10: ffffffff ffffffff ffffffff
14:35:16.735 -> Core 1 register dump:
14:35:16.735 -> PC : 0x400d2a16 PS : 0x00060730 A0 : 0x800d34ca A1 : 0x3ffb1e70
14:35:16.735 -> A2 : 0x3ffc0918 A3 : 0x3f401938 A4 : 0x3ffb1ec4 A5 : 0x3f401930
14:35:16.735 -> A6 : 0x00000000 A7 : 0x3ffb1ec6 A8 : 0x800d29f4 A9 : 0x3ffb1e40
14:35:16.735 -> A10 : 0x00000001 A11 : 0x3f401938 A12 : 0x3f401930 A13 : 0x00000000
14:35:16.920 -> A14 : 0x00000000 A15 : 0x00000000 SAR : 0x0000000a EXCCAUSE: 0x00000000
14:35:16.920 -> EXCVADDR: 0x00000000 LBEG : 0x40089609 LEND : 0x40089619 LCOUNT : 0xfffffffa
14:35:16.920 ->
14:35:16.920 -> ELF file SHA256: 0000000000000000
14:35:16.920 ->
14:35:16.920 -> Backtrace: 0x400d2a16:0x3ffb1e70 0x400d34c7:0x3ffb1eb0 0x400d58a6:0x3ffb1f40 0x400da4fe:0x3ffb1fb0 0x4008bcde:0x3ffb1fd0

Question Tags: SIM800L TinyGSM
3 Answers
0 Vote Up Vote Down
Sara Santos Staff answered 4 years ago

Hi.
How are you powering your board?
Does this happen frequently with that project?
Regards,
Sara

0 Vote Up Vote Down
NUR AZLIN AIRUL AZLIN MOHAMED ZOHDI answered 4 years ago

power up using 150Ah battery, for at least 5 years of unattended installation.  the unit is supposed to wake up twice daily and upload field data.
at least 1 crash after 15 days or so.

0 Vote Up Vote Down
Sara Santos Staff answered 4 years ago

Hi.
It is probably some issue with the code.
https://github.com/espressif/arduino-esp32/issues/3176
Can you share you code? Please use pastebin, github, a link to google drive or dropbox, for example, to share your code.
Regards,
Sara

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