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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@ltj
@Samarthwiz, no the A, B C refers to the GPIO ports (groups of i/o pins if you like) on the STM32F103xx chip. Microcontroller pins usually have more than one function, ie. can be both analog or digital in the Arduino sense. You can see what each pin can be used for in the reference: Espruino Board