On Mon, Jun 09, 2014 at 10:49:46AM +0000, Gordon Hollingworth wrote: > Hi, > > I've been writing a driver that uses the PWM to talk to devices that > communicate through a pwm like signal. To achieve this some devices have > a dma interface that you can stream data at to the pwm... > > We use something similar to this on Raspberry Pi to do audio output, we > use the PWM interface to output a 'stream' of audio data which is > subsequently filtered (RC filter) to give an audio output.
What kind of audio data is this? Is it able to play back any arbitrary audio signal? Thierry
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