48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/**
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* @file output.ino
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* @author Phil Schatzmann
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* @brief Demo to output audio on a lyrat-mini board: with headphone detection
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* active to switch the power amplifier on and off.
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* I2S is used and the ES8311 is initialized via the driver library.
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* @version 0.1
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* @date 2024-11-03
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*
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* @copyright Copyright (c) 2022
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*/
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#include "AudioTools.h"
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#include "AudioTools/AudioLibs/AudioBoardStream.h"
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AudioInfo info(44100, 2, 16);
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SineWaveGenerator<int16_t> sineWave(32000); // subclass of SoundGenerator with max amplitude of 32000
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GeneratedSoundStream<int16_t> sound(sineWave); // Stream generated from sine wave
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AudioBoardStream out(LyratMini);
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StreamCopy copier(out, sound); // copies sound into i2s
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// Arduino Setup
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void setup(void) {
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// Open Serial
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Serial.begin(115200);
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AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
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// start I2S
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Serial.println("starting I2S...");
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auto config = out.defaultConfig(TX_MODE);
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config.copyFrom(info);
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// cfg.i2s_function = PinFunction::CODEC; // determined automatically
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// cfg.i2s_port_no = 0; // or 1 if 0 is already in use
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out.begin(config);
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// additinal settings
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out.setVolume(0.5);
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out.addHeadphoneDetectionAction();
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// start sine wave
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sineWave.begin(info, N_B4);
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Serial.println("started...");
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}
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void loop() {
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copier.copy();
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out.processActions();
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} |