Hello @Pat

you are welcome.

BTW: you do not necessarily need to touch the M5Stack lib - M5.begin() actually has parameters, one of them is SerialEnable, if you set this to false you can setup Serial in your code anyway you like.

Thanks
Felix

You should be able to run up to 5 relay units connected to the i/ohub (pbhub).

You can find esp32 wifi sniffer on github, it can display all nearby wifi units.

as I recall there is a size limit when using Preference lib, so suggest you only use that for things like ssid and passwords. You can save your web pages in SPIFFS memory, try look here: https://randomnerdtutorials.com/esp32-vs-code-platformio-spiffs/

Hello @dstaley

Correct, that is what should happen. But yes, when I run your code I can see that the screen gets cleared but no time is shown.

Here is why: the ePaper needs some time to actually do the writing on screen. When the pushCanvas() call returns, the actual writing is still ongoing, but in your case the system is shutdown immediately after and before the ePaper had a chance to finish. Therefore the time is not shown. The trick is to add a delay before the shutdown. I tried with a delay(1000) and now the time shows.

Cheers
Felix

Hello, Core2 and Core have different API thus cannot work together, you must work with the core2 API library and not the core API library. the hardware between the devices is different.

Sorry, full documentation is way behind schedule.

@dimi
Congratulations ! Thank you very much.

Hello @HausBusDe

exactly why this is happening I cannot say, but it seems to be related to the double initialisation of Serial.begin() which is already happening through M5.begin(). As soon as I remove the Serial.begin() your code then works w/ or w/o the 'not working line'.

Thanks
Felix

Thanks Felix,

That helped. I guess from the documentation I thought that just adding the M5StickCPlus library would work. I have verified that some other programs do work (Display, TFT_Clock, PowerWake) with adjustments for the larger display size.

The AXP192 and I2C_Tester programs work with your changes although I left Wire.begin() at default because I was checking the bus on the Grove port and that now is working.

I did notice that on the Plus there is a small current draw on the battery (-0.5 mA) when I am running on USB power but it is 0mA on the StickC.

Ralph