I2S.h Doesn't compile correctly on Arduino M0 and M0+

[eljefedelrodeodeljefe]

Hi, I can't seem to make the i2s library and it's example run for the the above mentioned boards, running into:

InputSerialPlotter:32: error: 'I2S' was not declared in this scope

Can you advise? Are the boards supported?

[AidenRay]

I'm having the same issue with the SAMD21 Xplained Pro board:
InputSerialPlotter:34: error: 'I2S' was not declared in this scope

I also tried the AmplitudeSerialPlotter with similar error (but in the c++ file):
C:\Program Files (x86)\Arduino\portable\sketchbook\libraries\ArduinoSound\src\AudioInI2S.cpp:36:8: error: 'I2S' was not declared in this scope

@eljefedelrodeodeljefe any luck?

[sandeepmistry]

We've added a nicer error message in #246 for boards that do not support I2S. Supported boards are: Zero, MKRZero, MKR1000, MKRFox1200.