Arduino Code for FastDAC
Developed for arduino SAM cores library 1.6.12 but must have UARTClass.cpp in repo /corepatch folder copied over original core library, which addresses issue at: arduino/ArduinoCore-sam#64
On my Windows install this is located at:
C:\Users\Documents\ArduinoData\packages\arduino\hardware\sam\1.6.12\cores\arduino
The other possible location depending on IDE version seems to be:
C:\Users\AppData\Local\Arduino15\packages\arduino\hardware\sam\1.6.12\cores\arduino
If you have both, best to overwrite them both.