what is muxing
Most, if not all pins on a modern microcontroller can be used for different functionality (UART, GPIO, IÂ²C, SPI, â¦). That feature is implemented on the device with a multiplexer, and the common term for doing this is called âmuxingâ or âmuxing the pin(s)â. That muxing is a common source of mistakes and errors because the data sheets are not always crystal clear.