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    caccum

    @caccum

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    Posts made by caccum

    • RE: M5Core2 - How to restore to pre-installed factory firmware

      @macsbug Thanks for responding.
      I have tried those two solutions and it didn't work:

      1. M5Burner - erase flash, burn UI-Flow
      2. M5Burner - erase flash, burn Core2FactorTest; I actually think it was this program that initially killed my display driver; I have two new m5Core2's and I wonder if this programs is installing the wrong display drivers for my new Core2.
      3. M5Burner - erase flash, burn M5Core2TouchPanelRecovery; I also tried this program but it was hard to use as I couldn't see the display menu; I used the power button to blindly select each of the two firmware drivers and to load them.
      posted in Core 2
      C
      caccum
    • RE: M5Core2 - How to restore to pre-installed factory firmware

      @teastain Thanks for asking.
      I can use Arduino-IDE or UI-Flow-Desktop-IDE. I have also downloaded Thonny and ESPTools. So far the following has not worked to fix the display:

      1. M5 Burner ==> erase flash, and burn UI-Flow
      2. M5 Burner ==> erase and burn Core2FactoryTest
      3. M5 Burner ==> erase and burn M5Core2TouchPanelRecovery
      4. ESPTools ==> download 16MB flash image from a working m5core2 and flash to the problematic m5core2.
      5. Use "EasyLoader" to burn a program to test all core2 functions per the link on https://docs.m5stack.com/en/core/core2

      What is strange is that the only thing not working is the display. The backlight comes on. I can program the three buttons to send sounds to the speaker. I can create button on the touch screen that activate though I can't see them. If I print a label to the screen the device will freeze.

      posted in Core 2
      C
      caccum
    • M5Core2 - How to restore to pre-installed factory firmware

      I have a 1 week old M5Core2 that is having display driver problems - but everything else seems to work.

      What is the procedure to re-flash my M5Core2 back to the pre-installed factory firmware. I see there is a github file on how to do this but only for the AWS version of the M5Core2.

      posted in Core 2
      C
      caccum
    • I have the same issue - blank screen on M5Core2

      Re: M5Core - blank screen

      Hello, I have the same issue with M5Core2. The device worked for a couple of days, but now screen is blank. I've tried the following all without success: (i) erasing flash and reloading the UI-Flow Core2 firmware, (ii) erasing flash and loading the Core2FactoryTest, (iii) erasing flash and loading the M5Core2TouchPanelRecovery, (iii) used "Firmware Exporter" from M5Burner to save the 16MB binary image of a good working M5Core2 and then used ESPTools to burn that image onto the broken M5Core2.

      I am curious if you have found a solution to your similar blank screen problem.

      posted in Units
      C
      caccum
    • Core2 Screen Blank - 5March2023

      I have two new M5StackCore2 devices; and the screen has gone blank on one unit after I loaded the Demo program.

      I was able to use M5Burner to burn UIFlow_Core2 and to try some simple UI_Flow blockly programs successfully. I was able to program ButtonA and ButtonB to show different messages on the screen.

      I tried to download the demo program and my Core2 screen went blank.

      I have tried the following fixes unsuccessfully:

      • used M5Burner to erase flash and burn a new copy of UIFlow_Core2
      • used M5Burner to erase flash and load Core2FactoryTest (I read on the forum that can be a problem)
      • used M5Burner to load M5Core2TouchPanelRecovery (my screen was blank, so I had to blindly use the power button to go through the two selections to write new model FW)

      At this point I can write small blockly test programs that use Button A and Button B to cycle the vibrator on and off - which seems to imply everything else is working. However if I add a simple block to write a single label to the screen, I see nothing on the display (and the button test code will stop working to use Button A/B to cycle the vibrator).

      posted in Core 2
      C
      caccum