File content as of revision 1:69c37f1ab7df:

/** TDA7419 PreAmp library, I2C
 *
 * @Author: Dan Cohen
 */
#ifndef DigoleSerialDisp_h
#define DigoleSerialDisp_h
 
#include "mbed.h"
#include <inttypes.h>

///////////////////////////
// Variables for TDA7419 // 
///////////////////////////
// I2C address for TDA7419
#define TDA7419_ADDRESS      0x44 
 
#define DEC 10
#define HEX 16
#define OCT 8
#define BIN 2
 
 /** TDA7419 PreAmp library
 *
 * Includes the commands for volume, fader, subwoofer and tone controls
 *
 */
class PreampTDA7419 {
public:
 
    /** Create a new Digole Serial Display interface
     *
     * @param sda is the pin for I2C SDA
     * @param scl is the pin for I2C SCL
     * @param address is the 7-bit address (default is 0x27 for the device)
     */
    PreampTDA7419(PinName sda, PinName scl);
 
    /** Sets a new I2C address for the Preamp board (perhaps not useful as it is fixed for the TDA4719)
     * @param address is the the new address 
     */
    void setI2CAddress(uint8_t add);
    
    /** Set up the TDA7419 to default values that will allow audio to pass through the device
     * 
     */
    void initialize();
    int i2c_write(int command, int value);
    
     /** Set up the TDA7419 to default values that will allow audio to pass through the device
     * 
     */
    void setVolume  (int volume);
    int  readVolume ();
    int  increaseVolume();
    int  decreaseVolume();
    void setInput   (int input);
    int  readInput  ();

    int  increaseTreble();
    int  decreaseTreble();
    int  readTreble    ();

private:
    // Signals related to I2C communication
    I2C _device;
    uint8_t _address;
    uint8_t _Comdelay;
    
    ////////////////////////////////////
    // register addresses for TDA7419 //
    ////////////////////////////////////
    int _volume;
    int _input;

    int _mute;
    int _mix;

    // for register 4 Treble Filter
    int  _referenceInE;
    int  _trebleCenterFreq;
    int  _treble;

    // for middle frequecy filter
    int  _middleSoftStep;
    int  _middleQ;
    int  _middle;

    // for bass frequecy filter
    int  _bassSoftStep;
    int  _bassQ;
    int  _bass;

    // for output attenuators
    int _atten_lf;
    int _atten_rf;
    int _atten_lr;
    int _atten_rr;
    int _atten_mix;
    int _atten_sub;

    void writeToTDA7419     (int address, int value);
    int  calcAttenuationReg (int attenuation);
    int  calcToneAttenuationReg(int attenuation);
    void updateTDA7419Reg();

};
 
#endif