"Error of type LoadProhibited occurred on core 0." During Delay

[Fuzzyzilla]

Hello!

I am creating a library to control an SPI-based LCD. However, only a few lines into the setup, A HUGE console error is thrown:

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Guru Meditation Error of type LoadProhibited occurred on core  0. Exception was unhandled.
Register dump:
PC      : 0x4008594b  PS      : 0x00060530  A0      : 0x80084a2d  A1      : 0x3ffe3b70  
A2      : 0x00000008  A3      : 0x00000000  A4      : 0x0000000a  A5      : 0x00000000  
A6      : 0x00000000  A7      : 0xff000000  A8      : 0x00000000  A9      : 0x3ffe3b50  
A10     : 0x3ffc1380  A11     : 0x3f400c6f  A12     : 0x00000002  A13     : 0x0000ff00  
A14     : 0x00ff0000  A15     : 0xff000000  SAR     : 0x0000001f  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x00000018  LBEG    : 0x400014fd  LEND    : 0x4000150d  LCOUNT  : 0xffffffff  

Backtrace: 0x4008594b:0x3ffe3b70 0x40084a2d:0x3ffe3b90 0x400d0898:0x3ffe3bb0 0x400d06d2:0x3ffe3bd0 0x400d0644:0x3ffe3bf0 0x400d557e:0x3ffe3c20 0x400810f8:0x3ffe3c40 0x400812d8:0x3ffe3c70 0x4007867d:0x3ffe3cb0 0x4007879c:0x3ffe3ce0 0x40078a68:0x3ffe3d50 0x400800f9:0x3ffe3e70 0x40007c34:0x3ffe3eb0 0x40000740:0x3ffe3f20

CPU halted.

Using tonnes and tonnes of debug prints, I have found the line where the error occurs:

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delay(500);

What could be going on here? I have read elsewhere that this error is a panic thrown by the software error catcher when an invalid pointer is dereferenced. But, there are no pointers here!

Any suggestions? (I have tried to run the ESP-32 Error decoder provided by me-no-dev, but it crashes saying "corrupt jar file...")

EDIT: Upon removing that delay statement, everything works. All other delay statements work fine...
EDIT2: Nope, all delay statements are broken
EDIT3: Was able to fix it by using delayMicroseconds instead. But, still, what?!

[f.h-f.s.]

Use idf_monitor or resolve the backtraces manually http://esp-idf.readthedocs.io/en/latest ... nitor.html
Also, for delay you can use vTaskDelay(1000/portTICK_PERIOD_MS); using the FreeRTOS api's