I've been looking through the web for the case of multiple rc522 (RFID sensors) attached to a PICO/W using I2C. Most of the examples and Micropython library code seem to be using SPI. Can someone point me in the right direction for I2C examples? I would like to be able to attach the sensors using a Adafruit PCF8575 GPIO extender (https://www.adafruit.com/product/5611)
Please note that I also don't want to use infinite loop (continuous polling) solution of reading the rc522 and instead use event driven type solution. This seems much better when there are multiple other things such as servos, LEDs, MQTT etc running at the same time.