64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
/**
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* @file streams-audiokit-fft-led.ino
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* @author Phil Schatzmann
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* @brief We peform FFT on the microphone input of the AudioKit and display the
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* result on a 32*8 LED matrix
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* @version 0.1
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* @date 2022-10-14
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*
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* @copyright Copyright (c) 2022
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*
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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/AudioBoardStream.h"
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#include "AudioTools/AudioLibs/AudioRealFFT.h" // or AudioKissFFT
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#include "AudioTools/AudioLibs/LEDOutput.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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AudioBoardStream kit(AudioKitEs8388V1); // Audio source
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AudioRealFFT fft; // or AudioKissFFT
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FFTDisplay fft_dis(fft);
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LEDOutput led(fft_dis); // output to LED matrix
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StreamCopy copier(fft, kit); // copy mic to fft
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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 Audiokit as input device
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auto cfg = kit.defaultConfig(RX_MODE);
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cfg.input_device = ADC_INPUT_LINE2;
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kit.begin(cfg);
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// Setup FFT output
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auto tcfg = fft.defaultConfig();
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tcfg.length = 1024;
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tcfg.copyFrom(cfg);
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fft.begin(tcfg);
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// Setup FFT Display
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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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// 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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// add LEDs
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FastLED.addLeds<WS2812B, PIN_LEDS, GRB>(led.ledData(), led.ledCount());
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}
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void loop() {
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// update FFT
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copier.copy();
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// update LEDs
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led.update();
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} |