(solved) GME: IllegalInstruction

[mzimmers]

Hi all -

My app has recently started to show this error. It occurs on a seemingly quiet device, every hour or so. I'm using IDF v4.1 on a WROVER module.

According to the docs, this is caused either by a task ending, or some interference on a flash pin. I've virtually ruled out the possibility of a task ending. Since I'm using a self-contained ESP32 module, I don't see how I can be upsetting the flash pins, unless it has something to do with my configuration settings.

Here's a representation of my SPI settings. Can anyone see something I've configured that might be causing this?

Thanks...I really need to eliminate this ASAP.

[ESP_Sprite]

Note it can also be a power supply issue sometimes. Just an extra thing to perhaps keep an eye out for.

[mzimmers]

Hi Sprite -

That was one of my first thoughts too, but I have three units, all connected via different power mechanisms, that exhibit this error.

This is a relatively recent problem. I'm not sure, but I think it might have coincided with my move to v4.1. I upgraded to commit c7ba54e on the recommendation of igrr, but that didn't fix the issue.

[ESP_Sprite]

Strange. What does the crashdump look like on these devices? Any similarity, or just a crash at a random location?

[mzimmers]

Igrr gave me a patch 10306. Said it was a known problem, but the fix hadn't made it into release/v4.1 yet. Seems to be fixed now.