Re: Sending Serial Data via Audio - Dumb Idea??
Re: Sending Serial Data via Audio - Dumb Idea??
- Subject: Re: Sending Serial Data via Audio - Dumb Idea??
- From: Lucius Kwok <email@hidden>
- Date: Tue, 21 Jun 2005 15:40:54 -0400
To transmit serial over the audio port, you would need to handle
parts of the physical and data link layers. Not impossible, but just
a problem that has been solved many times over in many ways.
Here is some basic source code I use in my Objective-C project:
- (AudioDeviceID) defaultInputDevice {
AudioDeviceID deviceID = 0;
UInt32 size = sizeof (deviceID);
OSStatus err;
err = AudioHardwareGetProperty
(kAudioHardwarePropertyDefaultInputDevice, &size, &deviceID);
return deviceID;
}
- (void) startIOProc {
OSStatus err;
err = AudioDeviceStart(deviceID, ioProc);
}
- (void) stopIOProc {
OSStatus err;
err = AudioDeviceStop(deviceID, ioProc);
}
OSStatus ioProc ( AudioDeviceID inDevice,
const AudioTimeStamp* inNow,
const AudioBufferList* inInputData,
const AudioTimeStamp* inInputTime,
AudioBufferList* outOutputData,
const AudioTimeStamp* inOutputTime,
void* inClientData)
{
// Add your code here
return noErr;
}
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