/* SineCosOut.ino - Sine left, Cos right Bob Larkin 28 Dec 2020 Basic test of I2S input and output. Tested on T3.6 and T4.0 Public Domain */ #include "Audio.h" // Teensy I16 Audio Library #include "OpenAudio_ArduinoLibrary.h" // F32 library #include "AudioStream_F32.h" AudioSynthSineCosine_F32 sineCos; AudioAnalyzePeak_F32 peakL; AudioAnalyzePeak_F32 peakR; //AudioOutputI2S_OA_F32 i2sOut; AudioOutputI2S_F32 i2sOut; AudioConnection_F32 patchCord0(sineCos, 0, peakL, 0); AudioConnection_F32 patchCord1(sineCos, 1, peakR, 0); AudioConnection_F32 patchCord2(sineCos, 0, i2sOut, 0); // Sine AudioConnection_F32 patchCord3(sineCos, 1, i2sOut, 1); // Cosine AudioControlSGTL5000 codec1; void setup() { Serial.begin(9600); // (anything) delay(1000); Serial.println("OpenAudio_ArduinoLibrary - Sine-Cosine Stereo"); // Internally, I16 memory blocks are used. Needs modification, but // for now, supply 4 for F32 input and 4 for F32 output (shared). AudioMemory(4); AudioMemory_F32(20); codec1.enable(); // MUST be before inputSelect() codec1.inputSelect(AUDIO_INPUT_LINEIN); sineCos.amplitude(0.2); sineCos.frequency(600.0f); } void loop() { Serial.print("Max float memory = "); Serial.println(AudioStream_F32::f32_memory_used_max); if(peakL.available()) Serial.print(peakL.read(), 6); Serial.print(" <-L R-> "); if(peakR.available()) Serial.println(peakR.read(), 6); delay(500); }