view include/I2c_Codec.h @ 45:579c86316008 newapi

Major API overhaul. Moved to a single data structure for handling render functions. Functionally, generally similar except for scheduling within PRU loop function, which now uses interrupts from the PRU rather than polling. This requires an updated kernel.

/*
 * I2c_Codec.h
 *
 * Handle writing the registers to the TLV320AIC310x
 * series audio codecs, used on the BeagleBone Audio Cape.
 * This code is designed to bypass the ALSA driver and
 * configure the codec directly in a sensible way. It
 * is complemented by code running on the PRU which uses
 * the McASP serial port to transfer audio data.
 *
 *  Created on: May 25, 2014
 *      Author: Andrew McPherson
 */


#ifndef I2CCODEC_H_
#define I2CCODEC_H_

#include "I2c.h"


class I2c_Codec : public I2c
{
public:
	int writeRegister(unsigned int reg, unsigned int value);

	int initCodec();
	int startAudio(int dual_rate);
	int stopAudio();

	int setDACVolume(int halfDbSteps);
	int writeDACVolumeRegisters(bool mute);
	int setADCVolume(int halfDbSteps);
	int writeADCVolumeRegisters(bool mute);
	int setHPVolume(int halfDbSteps);
	int writeHPVolumeRegisters();

	int readI2C();

	I2c_Codec();
	~I2c_Codec();

private:
	bool running;
	int dacVolumeHalfDbs;
	int adcVolumeHalfDbs;
	int hpVolumeHalfDbs;
};


#endif /* I2CCODEC_H_ */