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2021-01-26 7:35 pm
I have two port expanders, one at address #21 and the other at #22. Each is connected to 16 LEDs. In order to get all 32 LEDs on, I have to issue two commands, one for each address. I asked this question at Adafruit and was told to create a Wrapper to encompass the two commands. How is this done? I've looked at a number of Google hits but they are all so complex I don't know where to start. I'm using MCP23017 port expanders and the Centipede library (best keywords). I think writing libraries should be a topic for future consideration.