Fixed control functions, examples, GUI elements

control_ak4558.cpp

 	// registers[AK4558_CTRL_1] |= AK4558_DIF1 | AK4558_DIF0;
 	//
 	// after manipulation, we can write the entire register value on the CODEC
-	unit8_t n = 0;
+	uint8_t n = 0;
 	Wire.requestFrom(AK4558_I2C_ADDR,10);
 	while(Wire.available()) {
 #if AK4558_SERIAL_DEBUG > 0
 void AudioControlAK4558::readConfig(void)
 {
 	// reads registers values
-	unit8_t n = 0;
-	unit8_t c = 0;
+	uint8_t n = 0;
+	uint8_t c = 0;
 	Wire.requestFrom(AK4558_I2C_ADDR, 10);
 	while(Wire.available()) {
 		Serial.print("Register ");
 	return true;
 }
 
-unsigned char AudioControlAK4558::convertVolume(float vol)
+uint8_t AudioControlAK4558::convertVolume(float vol)
 {
 	// Convert float (range 0.0-1.0) to unsigned char (range 0x00-0xFF)
-	uint8_t temp = vol>>22;
+	uint8_t temp = ((uint32_t)vol)>>22;
 	return temp;
 }
 
 bool AudioControlAK4558::volume(float n)
 {
 	// Set DAC output volume
-	unit8_t vol = convertVolume(n);
+	uint8_t vol = convertVolume(n);
 	registers[AK4558_LOUT_VOL] = vol;
 	registers[AK4558_ROUT_VOL] = vol;
 	Wire.beginTransmission(AK4558_I2C_ADDR);
 	return (Wire.endTransmission(true)==0);
 }
 
-bool AudioControlAK4558:::volumeLeft(float n)
+bool AudioControlAK4558::volumeLeft(float n)
 {
 	// Set DAC left output volume
-	unit8_t vol = convertVolume(n);
+	uint8_t vol = convertVolume(n);
 	registers[AK4558_LOUT_VOL] = vol;
 	bool ret = write(AK4558_LOUT_VOL, registers[AK4558_LOUT_VOL]);
 #if AK4558_SERIAL_DEBUG > 0
 bool AudioControlAK4558::volumeRight(float n)
 {
 	// Set DAC right output volume
-	unit8_t vol = convertVolume(n);
+	uint8_t vol = convertVolume(n);
 	registers[AK4558_ROUT_VOL] = vol;
-	write(AK4558_EOUT_VOL, registers[AK4558_ROUT_VOL]);
+	bool ret = write(AK4558_ROUT_VOL, registers[AK4558_ROUT_VOL]);
 #if AK4558_SERIAL_DEBUG > 0
 	Serial.print("AK4558: ROUT_VOL set to ");
 	Serial.println(registers[AK4558_ROUT_VOL], BIN);

control_ak4558.h

 	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
+	bool inputSelect(int n) { return false; }	//sets inputs to mono left, mono right, stereo (default stereo), not yet implemented
 private:
-	unit8_t registers[10];
+	uint8_t registers[10];
 	void initConfig(void);
 	void readConfig(void);
 	bool write(unsigned int reg, unsigned int val);
-	unit8_t convertVolume(float vol);
+	uint8_t convertVolume(float vol);
 };
 
 #endif

examples/HardwareTesting/AK4558/PassthroughTest/PassthroughTest.ino

   AudioMemory(12);
   while (!Serial);
   ak4558.enable();
+  ak4558.enableIn();
+  ak4558.enableOut();
 }
 
 void loop() {

examples/HardwareTesting/AK4558/SineOutTest/SineOutTest.ino

   AudioMemory(12);
   while (!Serial);
   ak4558.enable();
+  ak4558.enableOut();
   AudioNoInterrupts();
   sine1.frequency(440);
   sine2.frequency(440);

gui/index.html

 	</div>
 </script>
 
+<script type="text/x-red" data-help-name="AudioControlAK4558">
+	<h3>Summary</h3>
+	<p>Control the AK4558 chip on the <a href="https://hackaday.io/project/8567-hifi-audio-codec-module" target="_blank">HiFi Audio CODEC Module</a> 
+	in slave mode, where the Teensy controls all I2S timing.</p>
+	<h3>Audio Connections</h3>
+	<p>This object has no audio inputs or outputs.  Separate I2S objects
+		are used to send and receive audio data.
+	</p>
+	<h3>Functions</h3>
+	<p class=func><span class=keyword>enable</span>();</p>
+	<p class=desc>Enables the CODEC to work with 44.1 KHz - 16 bit data. This function does not enable the ADC/DAC modules.
+	</p>
+	<p class=func><span class=keyword>enableIn</span>();</p>
+	<p class=desc>Enables the ADC module.
+	</p>
+	<p class=func><span class=keyword>enableOut</span>();</p>
+	<p class=desc>Enables the DAC module.
+	</p>
+	<p class=func><span class=keyword>disable</span>();</p>
+	<p class=desc>Disables the ADC and the DAC modules.
+	</p>
+	<p class=func><span class=keyword>disableIn</span>();</p>
+	<p class=desc>Disable the ADC module.
+	</p>
+	<p class=func><span class=keyword>disableOut</span>();</p>
+	<p class=desc>Disable the DAC module.
+	</p>
+	<p class=func><span class=keyword>volume</span>(level);</p>
+	<p class=desc>Accepts a float in range 0.0-1.0 and sets the line output volume accordingly.
+	</p>
+	<p class=func><span class=keyword>volumeLeft</span>(level);</p>
+	<p class=desc>Accepts a float in range 0.0-1.0 and sets the left line output volume accordingly.
+	</p>
+	<p class=func><span class=keyword>volumeRight</span>(level);</p>
+	<p class=desc>Accepts a float in range 0.0-1.0 and sets the right line output volume accordingly.
+	</p>
+	<p class=func><span class=keyword>inputLevel</span>(level);</p>
+	<p class=desc>NOT SUPPORTED BY THE AK4558
+	</p>
+	<p class=func><span class=keyword>inputSelect</span>(input);</p>
+	<p class=desc>not implemented yet
+	</p>
+	<h3>Examples</h3>
+	<p class=exam>File &gt; Examples &gt; Audio &gt; HardwareTesting &gt; AK4558 &gt; PassthroughTest
+	</p>
+	<p class=exam>File &gt; Examples &gt; Audio &gt; HardwareTesting &gt; AK4558 &gt; SineOutTest
+	</p>
+	<h3>Notes</h3>
+	<p>TODO: Implement inputSelect() function to enable mono left, mono right, stereo operation.</p>
+	<p>TODO: Implement ADC and DAC filters control.</p>
+	<p>TODO: Implement DAC level attenuator attack rate modifier.</p>
+</script>
+<script type="text/x-red" data-template-name="AudioControlWM8731master">
+	<div class="form-row">
+		<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
+		<input type="text" id="node-input-name" placeholder="Name">
+	</div>
+</script>
+
 </body>
 </html>