There were quite a few new concepts in the previous section. This section is relatively easy: we are going to look at how you can use the Bezel switch and the general purpose I/O.
The Bezel switch is connected to B10 (GPIO42) and the I/O is connected to A1, A2 (GPIO1, GPIO2).
Start a new M5stack Dial program in Flowcode. Add a switch and a LED to the 2D panel and create the program you can see here.
This is a simple program that reads the value of the switch on the bezel (B10 or GPIO42) and sends it to the pins on A1 and A4 (GPIO10 and GPIO2). You can simulate this and you can check it works by sending it to your hardware.
So what?
You will notice that the switch logic is reversed: when the bezel is pressed the input at Port B10 (GPIO42) goes low.
Over to you#
Modify the program so that the output stays on for 5 seconds when the bezel is pressed. Try the same program but use GPIO pins 13 and 15 rather than 10 and 42. Does the program work?
Video and example file#
A Flowcode example file accompanies this tutorial:
Further reading: Flowcode Wiki.