streams-i2s-i2s

Author: pschatzmann

examples/examples-stream/streams-i2s-i2s/streams-i2s-i2s.ino

@@ -0,0 +1,48 @@
+/**
+ * @file streams-i2s-i2s.ino
+ * @brief Copy audio from I2S to I2S
+ * @author Phil Schatzmann
+ * @copyright GPLv3
+ */
+ 
+#include "AudioTools.h"
+
+uint16_t sample_rate=44100;
+uint16_t channels = 2;
+I2SStream in;
+I2SStream out; 
+StreamCopy copier(out, in);                       // copies sound into i2s
+ConverterScaler<int16_t> scaler(0.8, 0, 32767);    // change the signal
+
+// Arduino Setup
+void setup(void) {  
+  // Open Serial 
+  Serial.begin(115200);
+  AudioLogger::instance().begin(Serial, AudioLogger::Info);
+
+  // start I2S in
+  Serial.println("starting I2S...");
+  auto config = in.defaultConfig(RX_MODE);
+  config.sample_rate = sample_rate; 
+  config.bits_per_sample = 16;
+  config.i2s_format = I2S_STD_FORMAT;
+  config.is_master = true;
+  config.port_no = 0;
+  in.begin(config);
+
+  // start I2S out
+  auto config_out = out.defaultConfig(TX_MODE);
+  config.sample_rate = sample_rate; 
+  config.bits_per_sample = 16;
+  config.i2s_format = I2S_STD_FORMAT;
+  config.is_master = true;
+  config.port_no = 1;
+  out.begin(config_out);
+
+  Serial.println("I2S started...");
+}
+
+// Arduino loop - copy audio to out 
+void loop() {
+  copier.copy(scaler);
+}