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Diffstat (limited to 'docs/rp2/quickref.rst')
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diff --git a/docs/rp2/quickref.rst b/docs/rp2/quickref.rst index ac9cdb86cb..63b8928280 100644 --- a/docs/rp2/quickref.rst +++ b/docs/rp2/quickref.rst @@ -219,6 +219,26 @@ has the same methods as software I2C above:: i2c = I2C(0) # default assignment: scl=Pin(9), sda=Pin(8) i2c = I2C(1, scl=Pin(3), sda=Pin(2), freq=400_000) +I2S bus +------- + +See :ref:`machine.I2S <machine.I2S>`. :: + + from machine import I2S, Pin + + i2s = I2S(0, sck=Pin(16), ws=Pin(17), sd=Pin(18), mode=I2S.TX, bits=16, format=I2S.STEREO, rate=44100, ibuf=40000) # create I2S object + i2s.write(buf) # write buffer of audio samples to I2S device + + i2s = I2S(1, sck=Pin(0), ws=Pin(1), sd=Pin(2), mode=I2S.RX, bits=16, format=I2S.MONO, rate=22050, ibuf=40000) # create I2S object + i2s.readinto(buf) # fill buffer with audio samples from I2S device + +The ``ws`` pin number must be one greater than the ``sck`` pin number. + +The I2S class is currently available as a Technical Preview. During the preview period, feedback from +users is encouraged. Based on this feedback, the I2S class API and implementation may be changed. + +Two I2S buses are supported with id=0 and id=1. + Real time clock (RTC) --------------------- |