Introduction to embedded ARM programming with libopencm3

What it does

For many years now, I have found myself building (admittedly small) electronics projects, and for almost all of that time I have found myself reaching for the same microcontroller: the humble Atmega 328p that powers so many Arduinos (and Arduino clones!). This choice was driven by the fact that being an Arduino-compatible MCU meant I could take advantage of the huge library of code built for the Arduino platform. However, the choice is somewhat limiting - with only 16KiB of flash and 2KiB of sram, some applications were simply infeasible within that range. In addition, the relatively slow 16MHz top speed can make high-data-rate applications, like display driving, somewhat of a challenge.…from rhye.org

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