If anyone else is trying to do this you'll need to fix your partition table to take advantage of the larger memory. The steps how to do this are:

1. Go to PIO Home in Visual Studio Code
2. Click on +New Project
3. Name it m5core2 or similar. Choose M5Stack Core ESP32 for the board.
4. Leave Framework set to Arduino.
5. Open your platformio.ini file and replace the text with this:

[env:m5stack-core-esp32]
platform = espressif32
board = m5stack-core-esp32
framework = arduino
; [[[for macos]]]
;upload_port = /dev/cu.SLAB_USBtoUART
; [[[fix PSRAM size and you won't need have this file]]]
board_build.partitions = default_16MB.csv
build_flags =
    -DBOARD_HAS_PSRAM
    -mfix-esp32-psram-cache-issue

6. Copy the 16MB partition table file into your src directory. You can download this file here:

https://github.com/espressif/arduino-esp32/blob/master/tools/partitions/default_16MB.csv

7. In the 'lib' directory you will need three libraries.
   FastLED - https://github.com/FastLED/FastLED
   M5Core2 - https://github.com/m5stack/M5Core2
   ArduinoECCX08 - This one is in a zip file in the M5Core2 library repo:
   https://github.com/m5stack/M5Core2/blob/master/examples/core2_for_aws/ArduinoECCX08.zip

Your lib directory should look like this when you're done:

8. Now copy everything from the example FactoryTest directory in the M5Core2 library into your src folder. The directory files can be viewed here:

https://github.com/m5stack/M5Core2/tree/master/examples/core2_for_aws/FactoryTest

9. Rename FactoryTest.ino to main.cpp

10. Edit main.cpp and comment out these two lines with //. These tests will fail if you don't have an SDCard or something plugged into the IO port.

11. Connect your M5Core2 and build/upload. You can do CTRL-Shift-P to find the Platformio:Upload option.

12. Play with the cool factory demo!

Thanks to jokercatz for the tip on fixing the platform:
http://jokercatz.blogspot.com/2020/11/m5stack-core2-build-from-platformio.html

After some more troubleshooting I discovered that a 10ms wait after changing the screen color allows the first few lines to print when working in UIFlow. It appears that 'Set Screen backgroundColor' requires this delay before you can render text with Lcd.print.

This doesn't solve the mystery of the white screen when running in app mode though. Maybe someone else knows what's going on here.

As you can see I'm not doing anything especially exotic or weird here:

I see that Arduino supports vlw font files:
https://docs.m5stack.com/en/guide/develop_tools/vlw_font_creator

I also noticed a 'fonts' folder on the device flashed with UIFlow2 firmware.

How can we use vlw fonts in UIFLow2? Or UIflow micropython?

Yes, you can flash your AWS Edukit M5 Core 2 with UIFlow_Core2. I just did mine today and it works great with UIFlow. Within a few minutes I had a useful app running on the device.

You will lose access to the LEDs and the microphone as those are not supported (yet?) in the UIflow:

https://github.com/m5stack/UIFlow-Code/wiki/Advanced

The AWS IoT Edukit Core M5 requires you to build your own firmware using the ESP-IDF build framework.

Will the extra hardware features like the RGB leds, microphone and crypto module be supported with an m5burner micropython image?

@ajb2k3 Thanks. Yes, it looks like UIflow has evolved quite a bit since last year. I'm happy to see you can execute custom code now, and that there are some dedicated hooks for things like AWS IoT.

@ajb2k3 It's super buggy. I tried getting this ATECC608 chip working with Arduino code and had very inconsistent results, kernel panics and crashes. The only way I've seen it run consistently is by running the RTOS code in the AWS edukit tutorials.

I see that Arduino supports vlw font files:
https://docs.m5stack.com/en/guide/develop_tools/vlw_font_creator

I also noticed a 'fonts' folder on the device flashed with UIFlow2 firmware.

How can we use vlw fonts in UIFLow2? Or UIflow micropython?

@greenleaf It appears the image plus block is very picky about file extensions. It seems sort of hit or miss. I got a file that ended in *.png working, but then another one didn't work. s🤷🏼‍♂️

@greenleaf

Ok so interesting results; after letting the device run all night it did eventually get quite close to the Aranet4 readings for CO2.

Maybe I'm missing something here but both of these blocks only ever return errors for me. With the image block I can even see a preview in UIFlow but the moment I send code to the device nothing appears on screen. I've tried adjusting the layer and using different images but none of it seems to work.

I also could not get Label+ working - has anyone else?

@greenleaf Final update, it appears that if you upload the images both to the project and onto the device directly, that you can use the UIflow way to place them and resize them, etc.

I did find some weirdness with older versions of images being cached on the UI, but correct on the device.

Feature request:

Ability to set headers for Label+ objects. Many APIs required these headers before they respond with proper JSON.

Example:

curl -H "Accept: application/json" https://icanhazdadjoke.com/

Hey friends:

I made a simple sketch that displays the CO2eq and TVOC values on a display.

I have a highly accurate aranet4 to compare to. I know the sensor in the TVOC/eCO2 is not a true CO2 sensor but was curious if there's a way to adjust it to more closely match the value on the aranet4.

I'm going to let it run all night and see if it gets any closer. Right now here's what I'm seeing:

TVOC/eCO2 - 400
aranet4 - 560

The sensor seems never to deviate from 400 unless I blow on it.

@greenleaf

Ok, I found a workaround. Here it is in case anyone else runs into this:

1. Use the WebTerminal File button to upload your images into /flash/res/img
2. Edit the paths to any of your images in code to /flash/res/img/yourfile.jpg

@felmue

Ok I took a closer look - the files don't even make it onto the device at all.

Is this perhaps an unfinished feature? I would expect that when I upload files into a "project" that they end up on the device somewhere. I don't see a way in the UI to move files from the project to the device, so I have to upload them all again.

Is this by design? Or did I run into a missing feature or bug...

@felmue ok, then UIFlow 2 has a bug in it, it seems. I used the UI to upload and select the image. If it's being put in the wrong folder that is confusing for users.