Hi Ronaldo

So this worked for me...

In Arduino IDE 'Tools' set 'Flash Size' to 16MB & 'Erase All Flash Before Sketch Upload' to Enabled... all other settings as default.

After compiling Output shows 'Connecting....' which hangs for ages (I assume it's erasing the Flash) but after upload the Core2 runs the sketch.

I subsequently disabled 'Erase All Flash...' but kept 'Flash Size' at 16MB... and a different sketch also ran after upload.

If I changed 'Flash Size' back to the default 4MB the sketch uploaded without issue - but the Core2 wouldn't' run it - so same issue as before.

If you compare the output from M5Burner and Arduino IDE there are differences - the version of esptool.py for one... but also the Flash locations that get erased on a new upload.

So I reckon you're right - it seems like the Flash at the locations the Arduino IDE uses has been damaged and that's what's causing the problem.

Anyways, hope this works for you too - let me know how you get on.

Best

Lewis

Hi Ronaldo

So this worked for me...

In Arduino IDE 'Tools' set 'Flash Size' to 16MB & 'Erase All Flash Before Sketch Upload' to Enabled... all other settings as default.

After compiling Output shows 'Connecting....' which hangs for ages (I assume it's erasing the Flash) but after upload the Core2 runs the sketch.

I subsequently disabled 'Erase All Flash...' but kept 'Flash Size' at 16MB... and a different sketch also ran after upload.

If I changed 'Flash Size' back to the default 4MB the sketch uploaded without issue - but the Core2 wouldn't' run it - so same issue as before.

If you compare the output from M5Burner and Arduino IDE there are differences - the version of esptool.py for one... but also the Flash locations that get erased on a new upload.

So I reckon you're right - it seems like the Flash at the locations the Arduino IDE uses has been damaged and that's what's causing the problem.

Anyways, hope this works for you too - let me know how you get on.

Best

Lewis

Hi Ronaldo

Likewise... if I find a solution I'll update this thread.

As an aside but possibly related... since updating some M5Stack libraries in a recent session non of the inbuilt 'Basic' examples I've tried for my CoreS3 will compile - and ditto existing project sketches that worked fine before... so I suspect something's broken in the recent Arduino library updates.

Also the Arduino IDE appears to flash the Core2 successfully... I don't get any upload errors and it's usually pretty pernickety. The issue seems to be a fault in copying the code from flash to SRAM to execute it?

I'm on macOS and am having the same issue... Core2 was working fine... the Arduino IDE crashed after a file upload... since then sketches upload via the Arduino IDE but the Core2 won't run the code... power down and up and reset buttons have no effect... though erasing and uploading the Core2FactoryTest via M5 burner works fine.

I too installed a fresh Arduino IDE 2.2.1 on a different computer, loaded the M5Stack boards + Core2 and CoreS3 libraries including dependencies - but no joy - sketches do upload via the Arduino IDE but the Core2 won't run the code.

Any thoughts?