67 lines
1.6 KiB
C++
Executable file
67 lines
1.6 KiB
C++
Executable file
/* DAC balance example: Will influence both HP & LO outputs.
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This example code is in the public domain
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*/
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#include <Audio.h>
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#include <Wire.h>
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#include <SPI.h>
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#include <SD.h>
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#include <SerialFlash.h>
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const int myInput = AUDIO_INPUT_LINEIN;
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// const int myInput = AUDIO_INPUT_MIC;
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// Create the Audio components. These should be created in the
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// order data flows, inputs/sources -> processing -> outputs
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//
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AudioInputI2S audioInput; // audio shield: mic or line-in
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AudioOutputI2S audioOutput; // audio shield: headphones & line-out
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// Create Audio connections between the components
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//
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AudioConnection c1(audioInput, 0, audioOutput, 0); // left passing through
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AudioConnection c2(audioInput, 1, audioOutput, 1); // right passing through
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// Create an object to control the audio shield.
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//
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AudioControlSGTL5000 audioShield;
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void setup() {
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// Audio connections require memory to work. For more
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// detailed information, see the MemoryAndCpuUsage example
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AudioMemory(4);
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// Enable the audio shield and set the output volume.
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audioShield.enable();
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audioShield.inputSelect(myInput);
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audioShield.volume(0.5);
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}
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elapsedMillis chgMsec=0;
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float lastBal=1024;
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void loop() {
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// every 10 ms, check for adjustment
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if (chgMsec > 10) {
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float bal1=analogRead(15);
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bal1=((bal1-512)/512);
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bal1=(int)bal1;
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if(lastBal!=bal1)
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{
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if(bal1<0)
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{ // leaning toward left...
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audioShield.dacVolume(1,1+bal1);
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} else if(bal1>0) { // to the right
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audioShield.dacVolume(1-bal1,1);
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} else { // middle
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audioShield.dacVolume(1);
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}
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lastBal=bal1;
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}
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chgMsec = 0;
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}
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}
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