43 lines
1.3 KiB
Arduino
43 lines
1.3 KiB
Arduino
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/**
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* @file audio-in.ino
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* @brief Microphone test for the Hosyond 2.8" ESP32-S3 Display: reads the
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* on-board MEMS mic via the ES8311 codec's ADC path and prints the PCM
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* samples to Serial as CSV - open the Arduino IDE's Serial Plotter to see
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* the waveform, or just watch for non-zero values while talking near the
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* board to confirm the mic path is alive.
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*
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* Dependencies:
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* - https://github.com/pschatzmann/arduino-audio-tools
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* - https://github.com/pschatzmann/arduino-audio-driver
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* @see https://www.lcdwiki.com/2.8inch_ESP32-S3_Display
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* @author Phil Schatzmann
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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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AudioInfo info(16000, 2, 16);
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AudioBoardStream in(ESP32S3HosyondDisplay);
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CsvOutput<int16_t> csvOutput(Serial);
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StreamCopy copier(csvOutput, in); // copies mic data to Serial as CSV
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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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AudioDriverLogger.begin(Serial, AudioDriverLogLevel::Info);
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Serial.println("starting I2S...");
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auto config = in.defaultConfig(RX_MODE);
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config.copyFrom(info);
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if (!in.begin(config)) {
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Serial.println("error!");
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stop();
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}
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csvOutput.begin(info);
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Serial.println("started...");
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}
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void loop() { copier.copy(); }
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