38 lines
1.0 KiB
C++
38 lines
1.0 KiB
C++
#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<int32_t> sineWave; // subclass of SoundGenerator with max amplitude of 32000
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GeneratedSoundStream<int32_t> sound(sineWave); // Stream generated from sine wave
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auto invert = [](uint8_t* data, size_t bytes) {
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size_t sample_count = bytes / sizeof(int16_t);
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int16_t* data16 = (int16_t*)data;
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for (int j = 0; j < sample_count; j++) {
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data16[j] = -data16[j];
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}
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return bytes;
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};
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AudioBoardStream out(AudioKitEs8388V1);
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CallbackStream cb(out, invert);
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StreamCopy copier(cb, sound); // copies sound into i2s
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void setup(void) {
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Serial.begin(115200);
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//AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
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// start input sound
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sineWave.begin(info, N_B4);
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cb.begin(info);
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// start I2S in
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auto cfg = out.defaultConfig(TX_MODE);
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cfg.copyFrom(info);
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out.begin(cfg);
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// set AudioKit to full volume
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out.setVolume(0.3);
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}
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void loop() {
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copier.copy(); // Arduino loop - copy sound to out
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}
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