77 lines
1.5 KiB
C++
77 lines
1.5 KiB
C++
/**
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* @file streams-audiokit-sd_wav.ino
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* @author Phil Schatzmann
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* @brief Demonstrates how to use an encoder to write to a file
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* @version 0.1
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* @date 2023-05-04
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*
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* @copyright Copyright (c) 2023
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*
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*/
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#include <SD.h>
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#include <SPI.h>
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#include "AudioTools.h"
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#include "AudioTools/AudioLibs/AudioBoardStream.h"
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const char* file_name = "/rec.wav";
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AudioInfo info(16000, 1, 16);
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AudioBoardStream in(AudioKitEs8388V1);
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File file; // final output stream
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EncodedAudioStream out(&file, new WAVEncoder());
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StreamCopy copier(out, in); // copies data
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uint64_t timeout;
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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 input
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auto cfg = in.defaultConfig(RX_MODE);
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cfg.sd_active = true;
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cfg.copyFrom(info);
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cfg.input_device = ADC_INPUT_LINE2; // microphone
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in.begin(cfg);
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// Open SD drive
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if (!SD.begin(PIN_AUDIO_KIT_SD_CARD_CS)) {
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Serial.println("Initialization failed!");
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stop();
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}
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// Cleanup if necessary
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if (SD.exists(file_name))
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SD.remove(file_name);
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// open file
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file = SD.open(file_name, FILE_WRITE);
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if (!file){
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Serial.println("file failed!");
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stop();
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}
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// setup output
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out.begin(info);
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// set timeout - recoring for 5 seconds
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timeout = millis() + 5000;
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}
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void loop() {
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if (millis() < timeout) {
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// record to wav file
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copier.copy();
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} else {
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// close file when done
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if (file) {
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file.flush();
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Serial.print("File has ");
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Serial.print(file.size());
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Serial.println(" bytes");
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file.close();
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}
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}
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}
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