45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
/**
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* @file base-audiokit-a2dp.ino
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* @author Phil Schatzmann
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* @brief We play the input from the ADC to an A2DP speaker
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* @copyright GPLv3
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*/
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#include "AudioTools.h"
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#include "AudioTools/AudioLibs/AudioBoardStream.h"
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#include "AudioTools/Communication/A2DPStream.h"
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AudioInfo info(44100, 2, 16);
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BluetoothA2DPSource a2dp_source;
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AudioBoardStream i2s(AudioKitEs8388V1);
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const int16_t BYTES_PER_FRAME = 4;
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// callback used by A2DP to provide the sound data - usually len is 128 2 channel int16 frames
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int32_t get_sound_data(Frame* data, int32_t frameCount) {
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return i2s.readBytes((uint8_t*)data, frameCount*BYTES_PER_FRAME)/BYTES_PER_FRAME;
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}
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// Arduino Setup
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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 i2s input with default configuration
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Serial.println("starting I2S...");
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auto cfg = i2s.defaultConfig(RX_MODE);
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cfg.i2s_format = I2S_STD_FORMAT; // or try with I2S_LSB_FORMAT
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cfg.copyFrom(info);
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cfg.input_device = ADC_INPUT_LINE2; // microphone
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i2s.begin(cfg);
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// start the bluetooth
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Serial.println("starting A2DP...");
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a2dp_source.set_data_callback_in_frames(get_sound_data);
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a2dp_source.start("LEXON MINO L");
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}
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// Arduino loop - repeated processing
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void loop() {
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delay(1000);
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}
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