Added more control functions

control_ak4558.cpp

 	// registers[AK4558_CTRL_1] |= AK4558_DIF1 | AK4558_DIF0;
 	//
 	// after manipulation, we can write the entire register value on the CODEC
-	unsigned int n = 0;
+	unit8_t n = 0;
 	Wire.requestFrom(AK4558_I2C_ADDR,10);
 	while(Wire.available()) {
 #if AK4558_SERIAL_DEBUG > 0
 void AudioControlAK4558::readConfig(void)
 {
 	// reads registers values
-	unsigned int n = 0;
-	char c = 0;
+	unit8_t n = 0;
+	unit8_t c = 0;
 	Wire.requestFrom(AK4558_I2C_ADDR, 10);
 	while(Wire.available()) {
 		Serial.print("Register ");
 #if AK4558_SERIAL_DEBUG > 0
 	Serial.println("AK4558: Enable device - Done");
 #endif
-	write(AK4558_ROUT_VOL,255); //dummy write to last register to reset address counter to 0
 	return true;
 }
 
 	return true;
 }
 
-bool AudioControlAK4558:volume(float n)
+unsigned char AudioControlAK4558::convertVolume(float vol)
+{
+	// Convert float (range 0.0-1.0) to unsigned char (range 0x00-0xFF)
+	uint8_t temp = vol>>22;
+	return temp;
+}
+
+bool AudioControlAK4558::volume(float n)
 {
 	// Set DAC output volume
-	
-	registers[AK4558_LOUT_VOL] = 255;
-	registers[AK4558_ROUT_VOL] = 255;
+	unit8_t vol = convertVolume(n);
+	registers[AK4558_LOUT_VOL] = vol;
+	registers[AK4558_ROUT_VOL] = vol;
 	Wire.beginTransmission(AK4558_I2C_ADDR);
 	Wire.write(AK4558_LOUT_VOL);
 	Wire.write(registers[AK4558_LOUT_VOL]);
 	Wire.write(registers[AK4558_ROUT_VOL]);
-	Wire.endTransmission();
 #if AK4558_SERIAL_DEBUG > 0
 	Serial.print("AK4558: LOUT_VOL set to ");
 	Serial.println(registers[AK4558_LOUT_VOL], BIN);
+	Serial.print("AK4558: ROUT_VOL set to ");
+	Serial.println(registers[AK4558_ROUT_VOL], BIN);
 #endif
 	return (Wire.endTransmission(true)==0);
+}
+
+bool AudioControlAK4558:::volumeLeft(float n)
+{
+	// Set DAC left output volume
+	unit8_t vol = convertVolume(n);
+	registers[AK4558_LOUT_VOL] = vol;
+	bool ret = write(AK4558_LOUT_VOL, registers[AK4558_LOUT_VOL]);
+#if AK4558_SERIAL_DEBUG > 0
+	Serial.print("AK4558: LOUT_VOL set to ");
+	Serial.println(registers[AK4558_LOUT_VOL], BIN);
+#endif
+	return ret;
+}
+
+bool AudioControlAK4558::volumeRight(float n)
+{
+	// Set DAC right output volume
+	unit8_t vol = convertVolume(n);
+	registers[AK4558_ROUT_VOL] = vol;
+	write(AK4558_EOUT_VOL, registers[AK4558_ROUT_VOL]);
+#if AK4558_SERIAL_DEBUG > 0
+	Serial.print("AK4558: ROUT_VOL set to ");
+	Serial.println(registers[AK4558_ROUT_VOL], BIN);
+#endif
+	return ret;
 }

control_ak4558.h

 class AudioControlAK4558 : public AudioControl
 {
 public:
-	bool enable(void);	//enables the CODEC, does not power up ADC nor DAC (use enableIn() and enableOut() for selective power up)
-	bool enableIn(void);
-	bool enableOut(void);
-	bool disable(void) { return (disableIn()&&disableOut()); }
-	bool disableIn(void);
-	bool disableOut(void);
-	bool volume(float n);
-	bool inputLevel(float n) { return false; }
-	bool inputSelect(int n) { return false; }
-protected:
-	unsigned int registers[10];
+	bool enable(void);		//enables the CODEC, does not power up ADC nor DAC (use enableIn() and enableOut() for selective power up)
+	bool enableIn(void);	//powers up ADC
+	bool enableOut(void);	//powers up DAC
+	bool disable(void) { return (disableIn()&&disableOut()); }	//powers down ADC/DAC
+	bool disableIn(void);	//powers down ADC
+	bool disableOut(void);	//powers down DAC
+	bool volume(float n);	//sets LOUT/ROUT volume to n (range 0.0 - 1.0)
+	bool volumeLeft(float n);	//sets LOUT volume to n (range 0.0 - 1.0)
+	bool volumeRight(float n);	//sets ROUT volume to n (range 0.0 - 1.0)
+	bool inputLevel(float n) { return false; }	//not supported by AK4558
+	bool inputSelect(int n); {return false; }	//sets inputs to mono left, mono right, stereo (default stereo), not yet implemented
+private:
+	unit8_t registers[10];
 	void initConfig(void);
 	void readConfig(void);
 	bool write(unsigned int reg, unsigned int val);
+	unit8_t convertVolume(float vol);
 };
 
 #endif