ph1p/ikea-led-obegraensad

Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled + Solution

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MoJo2600 commented

My ESP was crash looping after i flashed the program with platform.io on my Lolin D32 Pro. I was tearing my hair out, but i found the culprit.

The exception looks something like this:

Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x4008f908  PS      : 0x00060b30  A0      : 0x800e98d9  A1      : 0x3ffcbba0  
A2      : 0xffffffff  A3      : 0xffffffff  A4      : 0xffffffff  A5      : 0x00060b23  
A6      : 0x00060b23  A7      : 0x00000001  A8      : 0x00000001  A9      : 0x00000004  
A10     : 0x00060b23  A11     : 0x3ffc41f4  A12     : 0x00000000  A13     : 0x00000003  
A14     : 0x007bf5a8  A15     : 0x003fffff  SAR     : 0x00000017  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x0000003f  LBEG    : 0x4008b961  LEND    : 0x4008b971  LCOUNT  : 0xfffffff4  


Backtrace: 0x4008f905:0x3ffcbba0 0x400e98d6:0x3ffcbbe0 0x400ea165:0x3ffcbc30 0x400e5c98:0x3ffcbc60 0x400e3005:0x3ffcbc80 0x400e35ab:0x3ffcbca0 0x400e35bd:0x3ffcbcc0 0x400d3057:0x3ffcbce0 0x400d35d0:0x3ffcbd10 0x400e628e:0x3ffcbd40

I figured out, that GPIO16 that is used for the button is also used for the serial RX. This causes the firmware to crash every time something is written to the console. The code is working when I either change the button pin or If i remove all serial outputs.

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My recommendation would be to change the default pin for the button to something else.

ph1p commented

Nice find :) Maybe you could just expand the readme. There is already a table for different boards and their pins

  • 👍1
MoJo2600 commented

Good point, I'll have a look

MoJo2600 commented

I updated the Readme with a pinout. Have a look here: #68

Maybe it would be a good idea to enable the wiki feature for this repository. Then there could be a page with details for the devices?

  • 👍1