Yes within the limitations of the simple RC filter but basically it's working like a one bit DAC
Gordon > On 17 Jun 2014, at 23:54, "Thierry Reding" <[email protected]> wrote: > >> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
