The PWMAudio lib is expecting an int16_t value but the example passes a sample cast to uint16_t
So any values from the lookup table that are negative are recast to 0 i think.
So half the sine wave in the case of the example is lost.
Mimics the I2S/PWMAudio/Stream interface for ease of use.
* Fix non-32b DMA size transfer calculation in ABM
* Rename wasHolding to isHolding in the I2S/PWM
It is the **current** number of bits left, not the past number.
* Add commented microphone example
* Add docs
Use the PWM hardware to generate a signal suitable for filtering and
amplifying 16bps audio output.
Refactor the AudioBufferManager to allow sharing with I2S
Add example
