83 lines
2.1 KiB
Arduino
83 lines
2.1 KiB
Arduino
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/**
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* @file streams-stk_files-audiokit.ino
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* @brief Example which Loads raw samples from the SDMMC file system
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* 1. Make sure that files are stored on SD in the /rawwaves directory
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* 2. In ArdConfig.h make sure that we used #define STK_USE_FILES
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* 3. On AudiKit all switches must be switched on
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* @author Phil Schatzmann
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* @copyright Copyright (c) 2021
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*/
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#include "SD_MMC.h"
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#include "AudioTools.h"
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#include "AudioTools/AudioLibs/AudioSTK.h" // install https://github.com/pschatzmann/Arduino-STK
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#include "AudioTools/AudioLibs/AudioBoardStream.h" // install https://github.com/pschatzmann/arduino-audio-driver
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STKStream<Instrmnt> in;
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AudioBoardStream out(AudioKitEs8388V1);
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StreamCopy copier(out, in);
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MusicalNotes notes;
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Instrmnt* p_instrument=nullptr; // instrument depends on file system
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float note_amplitude = 0.5;
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static float notes_array[] = { // frequencies aleatoric C-scale
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N_C3, N_D3, N_E3, N_F3, N_G3, N_A3, N_B3,
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N_C4, N_D4, N_E4, N_F4, N_G4, N_A4, N_B4,
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N_C5, N_D5, N_E5, N_F5, N_G5, N_A5, N_B5
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};
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void play() {
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static bool active=true;
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static float freq;
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static uint64_t timeout;
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if (millis()>timeout){
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if (active){
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// play note for 800 ms
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freq = notes_array[random(sizeof(notes_array)/sizeof(float))];
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Serial.print("playing ");
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Serial.println(freq);
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p_instrument->noteOn(freq, note_amplitude);
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timeout = millis()+800;
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active = false;
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} else {
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// silence for 100 ms
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p_instrument->noteOff(note_amplitude);
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timeout = millis()+100;
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active = true;
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}
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}
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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::Warning);
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if(!SD_MMC.begin("/sdcard", true)){ // 1-bit mode
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LOGE("Could not open SD_MMC");
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return;
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}
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// We can allocate the incstument only after SD_M
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p_instrument = new BeeThree();
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in.setInput(p_instrument);;
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// setup input
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auto icfg = in.defaultConfig();
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in.begin(icfg);
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// setup output
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auto ocfg = out.defaultConfig(TX_MODE);
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ocfg.copyFrom(icfg);
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ocfg.sd_active = false;
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out.begin(ocfg);
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}
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void loop() {
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play();
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copier.copy();
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}
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