Update: I have returned the M5Core2 device purchased last week to the dealer I bought it from, something they had absolutely no issue with doing for me. They are going to issue a replacement. Now I need to try to identify what caused the M5Core2 to go into this rather ridiculous fail mode. I simply left it running overnight with code that was working the previous evening, and when I came to use it the following afternoon it was unresponsive.

Let's hope the same thing doesn't happen again, which if it does, will sadly prematurely end my relationship with M5Stack devices :)

@teastain said in Core2 buttons don't work after M5.Lcd.setRotation(3)?:

@themusicman This is "The Community" website supported by user volunteers.
You should raise an Issue over on the M5Stack Github page,
https://github.com/m5stack/M5Core2
-Terry

Hi Terry, sure will do. I simply followed the links on the official M5Stack page where 'Forum' is listed under the 'Explore' menu hence considered this an official forum of M5Stack. There's no indication on the M5Stack page that this is anything other than an official page of theirs, quite misleading many would agree I am sure, especially considering each of the other links on that page head to official M5Stack pages such as GitHub, News, YouTube etc.

In any event, many thanks for the clarification that this is a site run by the community, that's good to know.

Also, unfortunately, on GitHub I see infrequent replies to issues posted. It appears M5Stack are not particularly supportive to customers when it comes to official replies to issues. I've returned a device to the company I bought it from which was purchased only last week due to what appears to be a strange and possible design issue where the M5Core2 device is unable to be placed into BOOT mode in order to recover/restore factory settings. At £45... bricked after a week is not something I expected for what is essentially a very high spec ESP32 board!

The issue I have overall with M5Stack is that their devices are not cheap low cost £3.50 ESP32 boards, they are quite expensive items relative to what they are and as such M5Stack don't appear to run an acceptable official after-sales support service. This makes this community even more valuable.

Thanks again Terry.

@wsanders Can I ask what you mean by reinstalling the "BIOS" please? Do you mean the factory image? If so, M5Burner isn't able to connect to the M5Core2, hence my thinking that this board is actually 'hard' bricked i.e. irrecoverable.

Again, if this is so, it is a pretty nasty design flaw by M5Stack in M5Core2 users not being able to place their ESP32S3 board into BOOT mode which would allow a recovery/restore to take place. As far as I can tell, BOOT mode on the M5Core2 is simply not possible.

So cold boot the core2 you mean? Your previous post said cold boot the computer which I thought you meant my iMac!! Sorry.

OK, I will try this approach. So I understand, launch m5burner, select factory firmware, but select erase before trying to burn factory image. When selecting erase, press the reset button on the core2 at a time when the M5burner has just accessed the core2. Is that correct?

Also, the code that was running on the M5Core2 previously was running fine without issue so not sure where any buggy code came from.

Thanks for the suggestions though @ajb2k3 - I will try this shortly.

I guess I have posted twice more or less about the same thing @ajb2k3 sorry. I installed the ArduinoIDE on to my MacBook Pro, followed the M5Stack instructions again to install the boards, library and drivers, and I get the same thing on this machine as I do on my iMac. here's the error...

I genuinely think my M5Core2 is bricked. I tried to do some research and it appears there's no successful way to get the core2 into BOOT mode. Sigh...

Erase Flash
esptool.py v3.3.2-dev
Serial port /dev/tty.wchusbserial54FC01826501
Connecting...
.
.
.

A fatal error occurred: Failed to connect to Espressif device: No serial data received.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html

Thanks @ajb2k3

I tried this earlier too, these are the results of trying that... any suggestions?

esptool.py v3.3.2-dev
Serial port /dev/tty.wchusbserial54FC0182651
Traceback (most recent call last):
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/serial/serialposix.py", line 265, in open
self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
OSError: [Errno 16] Resource busy: '/dev/tty.wchusbserial54FC0182651'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 5399, in <module>
_main()
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 5392, in _main
main()
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 4699, in main
esp = esp or get_default_connected_device(ser_list, port=args.port, connect_attempts=args.connect_attempts,
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 110, in get_default_connected_device
_esp = ESPLoader.detect_chip(each_port, initial_baud, before, trace,
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 363, in detect_chip
detect_port = ESPLoader(port, baud, trace_enabled=trace_enabled)
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 320, in init
self._port = serial.serial_for_url(port)
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/serial/init.py", line 88, in serial_for_url
instance.open()
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/serial/serialposix.py", line 268, in open
raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 16] could not open port /dev/tty.wchusbserial54FC0182651: [Errno 16] Resource busy: '/dev/tty.wchusbserial54FC0182651'

Having a nightmare with my new M5Core23 device which decided it no longer wanted to play! It has been working for the first few days but as of today I am unable to restore the factory image using M5Burner, and any sketch I load into ArduinoIDE simply does not upload. I see nothing on the screen even when plugged into USB.

I have uninstalled and reinstalled the correct serial port drivers, restarted my Mac and still get nothing.

So... how do I enter BOOT mode on the M5Core2 please? I gather on the M5Stack it was via one of the three hardware buttons, which I believe have been replaced by the three built in touch screen software buttons on the M5Core2. So, does this mean I need to open up the device and wire whichever the BOOT pin is to ground when I upload? Is that the way to get this device into BOOT mode?

if so, what is the BOOT pin I should ground for the M5Core2 please?

Hoping someone can help. Many thanks.

So, after a week with the board running fine, I attempted to upload a sketch today and the unit is blank. When I press the power button the unit does not turn on, neither does it turn on when I connect to USB.

I have tried M5Burner to restore the factory image but I also get an error there too, the full error log is here:

====================================
--chip auto --port /dev/tty.wchusbserial54FC0182651 --baud 1500000 --before default_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0x000 /Applications/M5Burner.app/Contents/Resources/packages/firmware/1f6084853a1fac200d66584a1a405017.bin
esptool.py v3.3.2-dev
Serial port /dev/tty.wchusbserial54FC0182651
Traceback (most recent call last):
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/serial/serialposix.py", line 265, in open
self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
OSError: [Errno 16] Resource busy: '/dev/tty.wchusbserial54FC0182651'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 5399, in <module>
_main()
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 5392, in _main
main()
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 4699, in main
esp = esp or get_default_connected_device(ser_list, port=args.port, connect_attempts=args.connect_attempts,
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 110, in get_default_connected_device
_esp = ESPLoader.detect_chip(each_port, initial_baud, before, trace,
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 363, in detect_chip
detect_port = ESPLoader(port, baud, trace_enabled=trace_enabled)
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/esptool.py", line 320, in init
self._port = serial.serial_for_url(port)
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/serial/init.py", line 88, in serial_for_url
instance.open()
File "/Applications/M5Burner.app/Contents/Resources/packages/tool/serial/serialposix.py", line 268, in open
raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 16] could not open port /dev/tty.wchusbserial54FC0182651: [Errno 16] Resource busy: '/dev/tty.wchusbserial54FC0182651'

Not sure what to do now... is my M5Core2 bricked...?

@chuck808 said in M5Stack Core2 Factory Test Timer:

Hello,

I realise this is probably a dumb question, but has anyone split the Timer function and screen from the factory test? I've spent a couple of days trying but not having much luck, though I have got the numbers and bar graph to show but not functioning. I am using Arduino IDE.

Thanks

Did you manage to achieve this, Chuck? I’d be interested to find out. I’ve just today received my m5core2 and am starting to dive into the code. Great documents, nice libraries, nice product but poor support on here I’m finding. It’s a shame.

Guys at M5Stack… come on folks, we really need answers to these type of questions please. We’ve invested in your devices, please reciprocate with Informa and answers when asked. Thanks.