alt Hacker NewsQuite a few years ago, I was looking for a way to program microcontrollers via an onboard interpreted language, and happened on the picol code. I still have my version somewhere. It was delightfully straightforward and easy for an amateur to modify. So I first got it to compile on a Teensy, then added a REPL, floating point, and a few functions to do things like flip the GPIO bits and read the ADC.
Today of course there are things like CircuitPython, and I enjoy using it too, but it's such a beast that it's really impenetrable for someone at my skill level if I want to add low level functions.
Thanks for your comment! Maybe it's time for picol2.c, same amount of lines of code, but floats and [expr]. I'm going to use a few hours today to get there. Such small changes would make it more practical for real use cases where one wants to retain understandability.