68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
/**
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* @file basic-a2dp-fft-led.ino
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* @brief A2DP Sink with output of the FFT result to the LED matrix
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* For details see the FFT Wiki: https://github.com/pschatzmann/arduino-audio-tools/wiki/FFT
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* @author Phil Schatzmann
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* @copyright GPLv3
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*/
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#include <FastLED.h> // to prevent conflicts introduced with 3.9
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#include "AudioTools.h"
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#include "AudioTools/AudioLibs/AudioRealFFT.h" // or any other supported inplementation
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#include "AudioTools/AudioLibs/LEDOutput.h"
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#include "BluetoothA2DPSink.h"
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#define PIN_LEDS 22
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#define LED_X 32
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#define LED_Y 8
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BluetoothA2DPSink a2dp_sink;
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AudioRealFFT fft; // or any other supported inplementation
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FFTDisplay fft_dis(fft);
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LEDOutput led(fft_dis); // output to LED matrix
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// Provide data to FFT
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void writeDataStream(const uint8_t *data, uint32_t length) {
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fft.write(data, length);
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}
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void setup() {
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Serial.begin(115200);
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AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
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// Setup FFT
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auto tcfg = fft.defaultConfig();
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tcfg.length = 1024;
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tcfg.channels = 2;
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tcfg.sample_rate = a2dp_sink.sample_rate();;
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tcfg.bits_per_sample = 16;
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fft.begin(tcfg);
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// Setup LED matrix output
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auto lcfg = led.defaultConfig();
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lcfg.x = LED_X;
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lcfg.y = LED_Y;
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led.begin(lcfg);
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fft_dis.fft_group_bin = 3;
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fft_dis.fft_start_bin = 0;
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fft_dis.fft_max_magnitude = 40000;
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fft_dis.begin();
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// add LEDs
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FastLED.addLeds<WS2812B, PIN_LEDS, GRB>(led.ledData(), led.ledCount());
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// register A2DP callback
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a2dp_sink.set_stream_reader(writeDataStream, false);
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// Start Bluetooth Audio Receiver
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Serial.print("starting a2dp-fft...");
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a2dp_sink.set_auto_reconnect(false);
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a2dp_sink.start("a2dp-fft");
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}
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void loop() {
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led.update();
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delay(50);
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} |