After researching some alternatives for mp3 decoding on STM32 microcontrollers, I found ST’s X-CUBE-AUDIO, a set of libraries and components for audio processing. It turns out that SpiritDSP developed a version of their MP3 decoding libraries for STM microcontrollers. You can download the software expansion kit following this link. It contains much more than just the SpiritDSP MP3 decoder, but this article will be focused just on how to get the MP3 decoder up and running.
