60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/**
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* @file send-hdlc-receive.ino
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* @author Phil Schatzmann
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* @brief Sending and receiving audio via Serial. You need to connect the RX pin
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* with the TX pin!
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* The sine wave generator is providing the data as fast as possible, therefore we
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* throttle on the sending side to prevent that the receiver is getting the data
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* too fast.
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*
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* To make sure that we transmit only valid data we use HDLC.
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*
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* @version 0.1
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* @date 2022-03-09
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*
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* @copyright Copyright (c) 2022
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*/
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#include "AudioTools.h"
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#include "AudioTools/Communication/HDLCStream.h"
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// #include "AudioTools/AudioLibs/AudioBoardStream.h"
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AudioInfo info(8000, 1, 16);
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SineWaveGenerator<int16_t> sineWave(32000);
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GeneratedSoundStream<int16_t> sound(sineWave);
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Throttle throttle(sound);
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I2SStream out;
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HDLCStream hdlc_enc(Serial, 256);
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HDLCStream hdlc_dec(Serial, 256);
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StreamCopy copierOut(hdlc_enc, throttle, 256);
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StreamCopy copierIn(out, hdlc_dec, 256);
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void setup() {
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Serial2.begin(115200);
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AudioLogger::instance().begin(Serial2, AudioLogger::Warning);
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hdlc_enc.begin();
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hdlc_dec.begin();
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// Note the format for setting a serial port is as follows:
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// Serial.begin(baud-rate, protocol, RX pin, TX pin);
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Serial.begin(1000000, SERIAL_8N1);
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// Setup sine wave
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sineWave.begin(info, N_B4);
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throttle.begin(info);
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// start I2S
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Serial.println("starting I2S...");
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auto config = out.defaultConfig(TX_MODE);
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config.copyFrom(info);
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out.begin(config);
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Serial.println("started...");
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}
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void loop() {
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// copy to serial
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copierOut.copy();
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// copy from serial
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copierIn.copy();
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} |