I got my RC522 I2C card reader working by connecting it directly to the I2C port (on my M5Stack Fire) but wanted it to work on my I2C hub. I've cobbled together a sketch (below) to do that and it is working fine, but only if I create an instance of MFRC522 before the setup() and then again after s…

Having to create two identical instances when using I2C hub

system Closed April 29, 2022, 3:11pm 10

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