TM1637TinyDisplay VS TM1637

Or this one that has some nice documentation: https://github.com/jasonacox/TM1637TinyDisplay

I have found a library for the Arduino framework that seems to work the way I want to (https://github.com/avishorp/TM1637/blob/master/TM1637Display.cpp), but also does some weird things like not actually writting to the pins as outputs but changing their mode from input to output (and I don't know what that is supposed to achieve, so I can't really copy it, but it works)

Library for the tm1637 is here

The driver chip is a TM1637 and has a i2c like communication interface. I don't see a adafruit library for that chip (as I don't think they sell a display with that chip) but you can use this libary that is quite popular for the TM1637: https://github.com/avishorp/TM1637

// https://github.com/avishorp/TM1637

I finally managed to put all 5 displays reliably working with only 6 pins using he library you mentioned from https://github.com/avishorp/TM1637. Just for the record, with this library, it doesn't matter whether I used a common clock or a common data pin.

Just take an Arduino library and extract the code. Even if you're programming in C and not C++, it should be pretty straightforward. Looking at this library (https://github.com/avishorp/TM1637) the only Arduino-specific code is the pin manipulation and delay routines which are easily ported to other MCU platforms.