hier kann man alles nachlesen und sehen welche GPIOs genutzt werden können
Beschreibung des M5-Fire
here is a link to burn the firnware
Burning is described here
I could not figure out how to handle text modifications on the screen. After changing the text, I still can see the text previously written in the background, so it's quite unreadable.
Do I have to use the drawing function to first clear the zone ?
here's an example. Hope it answers your question