https://github.com/cmasenas/SineWaveDue
https://github.com/diegozeng/FunctionGenerator
https://github.com/stimmer/DueVGA
https://github.com/arduino-org/arduino-library-audio
AD9954 lib
https://github.com/JQIamo/AD9954-arduino
SPI
https://github.com/PaulStoffregen/SPI
Подборка библиотек
https://arduinomaster.ru/biblioteki-arduino/skachat-biblioteki-arduino/