PlatformIO Community

Trace ESP32 crash error with PlatformIO on vsCode

Hi, I was using regular Arduino code and this is what I get there:

Guru Meditation Error: Core  0 panic'ed (LoadProhibited). Exception was unhandled.

Core  0 register dump:
PC      : 0x40084d1c  PS      : 0x00050031  A0      : 0x8008f89e  A1      : 0x3ffbe93c  
A2      : 0x00000100  A3      : 0x00018100  A4      : 0x000637ff  A5      : 0x3ffbe91c  
A6      : 0x00000000  A7      : 0x3ffbdc7c  A8      : 0x00000000  A9      : 0x00000000  
A10     : 0x000001f4  A11     : 0x80000001  A12     : 0x800818e1  A13     : 0x3ffbe8fc  
A14     : 0x3ffc3158  A15     : 0xfffffbff  SAR     : 0x0000001d  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x8008f8aa  LBEG    : 0x00000000  LEND    : 0x00000000  LCOUNT  : 0x00000000  

Backtrace:0x40084d19:0x3ffbe93c |<-CORRUPTED

I read on the internet about your debug functionalities. I have set up PlatformIO with esp32-prog on vscode. My platformio.ini file looks like this:

platform = espressif32
board = esp32dev
framework = arduino
debug_tool = esp-prog
upload_protocol = esp-prog
monitor_filters = esp32_exception_decoder
build_type = debug

But I can hardly trace en error there. It just pauses execution and prints the following:

3 "IDLE" received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 1073467356]
0x40084626 in _xt_lowint1 () at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/port/xtensa/xtensa_vectors.S:1111
1111	/home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/port/xtensa/xtensa_vectors.S: No such file or directory.

Here is the image of vsCode:

Please help how I can try to debug it.

It looks as if your program corrupts the memory. Such problems are difficult to debug as the cause and the crash can occur in completely separate locations in the code.

Causes for memory corruption are returning data allocated on the stack, writing outside the bounds of an array, using memory that has already been freed, uninitialized pointer variables etc.

In order to isolate the cause, the main debugging strategy is to disable/uncomment as much code as possible. Then add the code again, piece by piece, until the program crashes. Most likely, the least recently added code is the cause of the problem. Repeat the process with finer steps within the part of the code.

The debugger won’t help much here.