snapshot

libraries/audio-tools/examples/examples-communication/udp/communication-udp-receive/communication-udp-receive.ino

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+/**
+ * @file example-udp-receive.ino
+ * @author Phil Schatzmann
+ * @brief Receiving audio via udp.
+ * Because the clocks of the 2 processors are not synchronized, we might get some
+ * buffer overruns or underruns. 
+ * @version 0.1
+ * @date 2022-03-09
+ * 
+ * @copyright Copyright (c) 2022
+ *  */
+
+#include "AudioTools.h"
+#include "AudioTools/Communication/UDPStream.h"
+// #include "AudioTools/AudioLibs/AudioBoardStream.h"
+
+const char* ssid="SSID";
+const char* password="password";
+AudioInfo info(22000, 1, 16);
+UDPStream udp(ssid, password); 
+const int udpPort = 7000;
+I2SStream out; // or ony other e.g. AudioBoardStream
+StreamCopy copier(out, udp);     
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+  // start UDP receive
+  udp.begin(udpPort);
+
+  // start I2S
+  Serial.println("starting I2S...");
+  auto config = out.defaultConfig(TX_MODE);
+  config.copyFrom(info);
+  config.buffer_size = 1024;
+  config.buffer_count = 20;
+  out.begin(config);
+
+  Serial.println("started...");
+}
+
+void loop() { 
+    copier.copy();
+}

libraries/audio-tools/examples/examples-communication/udp/communication-udp-send/communication-udp-send.ino

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+/**
+ * @file example-udp-send.ino
+ * @author Phil Schatzmann
+ * @brief Sending audio over udp. Because the SineWaveGenerator is providing the data as fast 
+ * as possible we need to throttle the speed.
+ * @version 0.1
+ * @date 2022-03-09
+ *
+ * @copyright Copyright (c) 2022
+ */
+
+#include "AudioTools.h"
+#include "AudioTools/Communication/UDPStream.h"
+
+const char *ssid = "ssid";
+const char *password = "password";
+AudioInfo info(22000, 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
+UDPStream udp(ssid, password); 
+Throttle throttle(udp);
+IPAddress udpAddress(192, 168, 1, 255);
+const int udpPort = 7000;
+StreamCopy copier(throttle, sound);  // copies sound into i2s
+
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+  // Setup sine wave
+  sineWave.begin(info, N_B4);
+
+  // Define udp address and port
+  udp.begin(udpAddress, udpPort);
+
+  // Define Throttle
+  auto cfg = throttle.defaultConfig();
+  cfg.copyFrom(info);
+  //cfg.correction_ms = 0;
+  throttle.begin(cfg);
+
+  Serial.println("started...");
+}
+
+void loop() { 
+    copier.copy();
+}