@hanphony I have been working with the uiflow framework. Are you aware that you can write and load your Python apps, selectable via the UiFlow interface? Pretty cool.

@lukasmaximus Thanks for the recommendation. Thonny looks nice. Will try.

@world101 I got Visual Code (pymakr) to do some form of upload/ download. It's a big buggy; 'Upload current file only' feature crashes but 'upload project' is fine. The latter is not preferred because it uploads EVERYTHING in my project folder.

Will try ampy, thanks much!

@world101 said in How to acquire and upload demo app?:

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I followed your tip and got the prompt now! My mistake (habit of ESP8266 days) was thinking 9600 is a safe speed, which apparently isn't. Also didn't know about Ctrl-C until you mentioned it.

What do you use to transfer files both ways?

@world101 I'm almost there with USB-mode control. I can switch to USB mode. Using Windows Visual Code (Pymakr extension) I am unable to get the >>> prompt. The only way I get the prompt is when the built-in 'test' app is run.

So I wrote a simple hello world app and managed to run it on the M5StickC without first saving the file in the stick. Trying to write the file results in an error and failed.

My question is: what apps are expected to work in USB mode (since Visual Code REPL doesn't work), and how can I manage the files inside?

reset button doesn't work when an exception is thrown. is there any other way to force a reset?

@world101 It worked! Very cool. Let me play with this some more.

Kudos to the UIFlow team! The web interface makes coding my M5StickC a breeze, and I was able to see how equivalent Python code are written.

Moving forward, I want to move away from the UiFlow infrastructure and build my own. The existing libraries simplified component coding; no need to fiddle with GPIO ports to initialise the LCD, and I hope to keep all that.

Qn: With UiFlow REPL is no longer possible on the M5StickC. I read some instructions for other models, but how does one do the same for this?

See solution here: https://forum.m5stack.com/topic/1953/how-to-make-m5stickc-go-into-light-sleep/2

@m5stack Did a quick machine.deepsleep(10000) test and it seems to work! Will add more code to see how this extends battery life.

Thanks!