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// test of DaisySP effect object for the Teensy audio library
// just does audio passthru
#include <Audio.h>
#include <Metro.h>
Metro five_sec=Metro(5000); // Set up a 5 second Metro
Metro trigger=Metro(250); // envelope trigger
#include "daisysp.h"
using namespace daisysp;
// including the source files is a pain but that way you compile in only the modules you need
// DaisySP statically allocates memory and some modules e.g. reverb use a lot of ram
// constants for integer to float and float to integer conversion
//#define MULT_16 2147483647
//#define DIV_16 4.6566129e-10
#define MULT_16 2147483647
#define DIV_16 3.05109e-5
float samplerate=AUDIO_SAMPLE_RATE_EXACT;
// create daisySP processing objects
AudioInputI2S audioInput; // audio shield: mic or line-in
AudioOutputI2S out;
//AudioOutputUSB outUSB;
AudioControlSGTL5000 audioShield;
AudioEffectDaisySP effect; // create the daisysp effect audio object
AudioConnection patchCord1(audioInput,0,effect,0); //mono input
AudioConnection patchCord20(effect,0,out,0); // send to left and right out
AudioConnection patchCord21(effect,0,out,1);
//AudioConnection patchCord22(synth,0,outUSB,0);
//AudioConnection patchCord23(synth,0,outUSB,1);
// this is the function called by the AudioSynthDaisySP object when it needs a block of samples
void AudioEffectDaisySP::update(void)
{
float in, out,sig;
audio_block_t *block;
// start of processing functions.
block = receiveWritable(); // we will modify the samples in place
if (!block) return;
for (int s=0; s < AUDIO_BLOCK_SAMPLES; s++) {
in=(float)block->data[s]*DIV_16; // convert -32767 to 32767 to -1.0 to +1.0
//**** insert daisySP generators here
out=in;
// convert generated float value -1.0 to +1.0 to int16 used by Teensy Audio
int32_t val = out*MULT_16;
block->data[s] = val >> 16;
}
transmit(block);
release(block);
}
void setup() {
// Init Serial
Serial.begin(38400);
// wait for Arduino Serial Monitor to be ready
// while (!Serial);
Serial.println("starting setup");
// Enable the AudioShield
AudioMemory(10); // only need 2 blocks for 1 daisySP object
audioShield.enable();
audioShield.volume(0.3);
Serial.println("finished setup");
}
float freq=1000.0, amp;
void loop() {
// audio stats
if (five_sec.check() == 1)
{
Serial.print("Proc = ");
Serial.print(AudioProcessorUsage());
Serial.print(" (");
Serial.print(AudioProcessorUsageMax());
Serial.print("), Mem = ");
Serial.print(AudioMemoryUsage());
Serial.print(" (");
Serial.print(AudioMemoryUsageMax());
Serial.println(")");
}
}