[android-kernel] Re: using the headset jack to control an external device

2011-03-12 Thread Earlence
Thanks for the update. That was helpful. -Earlence On Mar 11, 7:08 pm, Chris Stratton wrote: > Depending on the transfer function of the audio output system, it may > be possible to simply shove moderate rate non-return-zero encoded data > through it by delivering PCM samples to the audio driver

[android-kernel] Re: using the headset jack to control an external device

2011-03-11 Thread Chris Stratton
Depending on the transfer function of the audio output system, it may be possible to simply shove moderate rate non-return-zero encoded data through it by delivering PCM samples to the audio driver, and recover it with an appropriate receiver circuit on the other side. What is certainly possible i

[android-kernel] Re: using the headset jack to control an external device

2011-03-01 Thread Earlence
but playing sound is different from controlling a device right? or they just send data bytes which are control signals for the external device :) (instead of sending pcm data) Cheers, Earlence On Mar 1, 12:38 pm, Stefan Schake wrote: > Hey, > > because user space apps are allowed to play sound?