snapshot

libraries/audio-tools/examples/examples-communication/esp-now/codec/communication-codec-espnow-receive/communication-codec-espnow-receive.ino

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+/**
+ * @file example-serial-receive.ino
+ * @author Phil Schatzmann
+ * @brief Receiving audio via ESPNow and decoding data to I2S 
+ * @version 0.1
+ * @date 2022-03-09
+ * 
+ * @copyright Copyright (c) 2022
+ */
+
+#include "AudioTools.h"
+#include "AudioTools/Communication/ESPNowStream.h"
+#include "AudioTools/AudioCodecs/CodecSBC.h"
+// #include "AudioTools/AudioLibs/AudioBoardStream.h"
+
+
+ESPNowStream now;
+I2SStream out;  // or AudioBoardStream
+EncodedAudioStream decoder(&out, new SBCDecoder(256)); // decode and write to I2S - ESP Now is limited to 256 bytes
+StreamCopy copier(decoder, now);     
+const char *peers[] = {"A8:48:FA:0B:93:02"};
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  // setup esp-now
+  auto cfg = now.defaultConfig();
+  cfg.mac_address = "A8:48:FA:0B:93:01";
+  now.begin(cfg);
+  now.addPeers(peers);
+
+  // start I2S
+  Serial.println("starting I2S...");
+  auto config = out.defaultConfig(TX_MODE);
+  out.begin(config);
+
+  // start decoder
+  decoder.begin();
+
+
+  Serial.println("Receiver started...");
+}
+
+void loop() { 
+  copier.copy();
+}

libraries/audio-tools/examples/examples-communication/esp-now/codec/communication-codec-espnow-receive_measure/communication-codec-espnow-receive_measure.ino

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+/**
+ * @file example-serial-receive_measure.ino
+ * @author Phil Schatzmann
+ * @brief Receiving audio via ESPNow with max speed to measure thruput
+ * @version 0.1
+ * @date 2022-03-09
+ * 
+ * @copyright Copyright (c) 2022
+ * 
+ */
+
+#include "AudioTools.h"
+#include "AudioTools/Communication/ESPNowStream.h"
+#include "AudioTools/AudioCodecs/CodecSBC.h"
+
+ESPNowStream now;
+MeasuringStream out(1000, &Serial);
+EncodedAudioStream decoder(&out, new SBCDecoder()); // decode and write to I2S
+StreamCopy copier(decoder, now);     
+const char *peers[] = {"A8:48:FA:0B:93:02"};
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  // start esp-now
+  auto cfg = now.defaultConfig();
+  cfg.mac_address = "A8:48:FA:0B:93:01";
+  now.begin(cfg);
+  now.addPeers(peers);
+
+  // start output
+  decoder.begin();
+  out.begin();
+
+  Serial.println("Receiver started...");
+}
+
+void loop() { 
+  copier.copy();
+}

libraries/audio-tools/examples/examples-communication/esp-now/codec/communication-codec-espnow-send/communication-codec-espnow-send.ino

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+/**
+ * @file example-serial-send.ino
+ * @author Phil Schatzmann
+ * @brief Sending encoded audio over ESPNow
+ * @version 0.1
+ * @date 2022-03-09
+ *
+ * @copyright Copyright (c) 2022
+ */
+
+#include "AudioTools.h"
+#include "AudioTools/Communication/ESPNowStream.h"
+#include "AudioTools/AudioCodecs/CodecSBC.h"
+
+AudioInfo info(32000,1,16);
+SineWaveGenerator<int16_t> sineWave( 32000);  // subclass of SoundGenerator with max amplitude of 32000
+GeneratedSoundStream<int16_t> sound( sineWave); // Stream generated from sine wave
+ESPNowStream now;
+SBCEncoder sbc;
+EncodedAudioStream encoder(&now, &sbc); // encode and write to ESP-now
+StreamCopy copier(encoder, sound);  // copies sound into i2s
+const char *peers[] = {"A8:48:FA:0B:93:01"};
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  auto cfg = now.defaultConfig();
+  cfg.mac_address = "A8:48:FA:0B:93:02";
+  now.begin(cfg);
+  now.addPeers(peers);
+
+  // Setup sine wave
+  sineWave.begin(info, N_B4);
+
+  // start encoder
+  encoder.begin(info);
+  
+  Serial.println("Sender started...");
+}
+
+void loop() { 
+  copier.copy();
+}