85 lines
1.5 KiB
C++
Executable file
85 lines
1.5 KiB
C++
Executable file
/*
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Demo of the audio sweep function.
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The user specifies the amplitude,
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start and end frequencies (which can sweep up or down)
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and the length of time of the sweep.
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FMI:
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The audio board uses the following pins.
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6 - MEMCS
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7 - MOSI
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9 - BCLK
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10 - SDCS
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11 - MCLK
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12 - MISO
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13 - RX
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14 - SCLK
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15 - VOL
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18 - SDA
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19 - SCL
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22 - TX
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23 - LRCLK
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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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#include <Bounce.h>
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AudioSynthToneSweep myEffect;
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AudioOutputI2S audioOutput; // audio shield: headphones & line-out
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// The tone sweep goes to left and right channels
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AudioConnection c1(myEffect, 0, audioOutput, 0);
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AudioConnection c2(myEffect, 0, audioOutput, 1);
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AudioControlSGTL5000 audioShield;
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float t_ampx = 0.8;
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int t_lox = 10;
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int t_hix = 22000;
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// Length of time for the sweep in seconds
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float t_timex = 10;
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// <<<<<<<<<<<<<<>>>>>>>>>>>>>>>>
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void setup(void)
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{
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Serial.begin(9600);
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while (!Serial) ;
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delay(3000);
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AudioMemory(2);
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audioShield.enable();
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audioShield.volume(0.5);
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Serial.println("setup done");
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if(!myEffect.play(t_ampx,t_lox,t_hix,t_timex)) {
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Serial.println("AudioSynthToneSweep - begin failed");
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while(1);
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}
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// wait for the sweep to end
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while(myEffect.isPlaying());
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// and now reverse the sweep
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if(!myEffect.play(t_ampx,t_hix,t_lox,t_timex)) {
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Serial.println("AudioSynthToneSweep - begin failed");
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while(1);
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}
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// wait for the sweep to end
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while(myEffect.isPlaying());
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Serial.println("Done");
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}
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void loop(void)
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{
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}
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