AMY_Test_ESP32_add_event_glitch.ino

AMY_Test_ESP32_add_event_glitch.ino

#include <AMY-Arduino.h>
#include <ESP_I2S.h>

AMY amy;
I2SClass I2S;

struct event e = amy.default_event();
long my_clock = amy.sysclock();

void setup() 
{
  // This is if you're using an Alles board, you have to poke 5V_EN to turn on the speaker
  // You can ignore this if you're not using an Alles
  // pinMode(21, OUTPUT); // ### MB 20240807
  // digitalWrite(21, 1); // ### MB 20240807

  // Set your I2S pins. Data/SD/DIN/DOUT, SCK/BLCK, FS/WS/LRCLK. 
  //  int8_t bclk, int8_t ws, int8_t dout,
  I2S.setPins(4, 6, 5, -1, -1); // Original settings!
  // I2S.setPins(13, 11, 12, -1, -1); // ### MB 20240807
  I2S.begin(I2S_MODE_STD, AMY_SAMPLE_RATE, I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_MONO); // I2S.begin(I2S_PHILIPS_MODE, AMY_SAMPLE_RATE, BYTES_PER_SAMPLE8);

  // Start up AMY
  amy.begin(/* cores= */ 1, /* reverb= */ 0, /* chorus= */ 0);

  // Send AMY messages in two ways: first, using the wire protocol:
  // This sends a sine wave at 220Hz on osc 0 with velocity 1
  amy.send_message("v0f220l1");
  
  // The second way is to use the structure directly 
  // We fill in an event struct with what we want and "schedule" it for 2.5 seconds from now
  
  e.osc = 0;
  e.wave = SINE;
  e.freq_coefs[COEF_CONST] = 440;
  e.velocity = 1;
  e.time = my_clock+2500;
  amy.add_event(e);

  /* ### MB 20240807 =============================
  // reset everything at 5000ms
  amy.reset(my_clock+5000);

  // Constructed FM example, plays a bell-like tone
  amy.fm(my_clock+5001);

  // Reset everything at 7500ms
  amy.reset(my_clock+7500);

  // Run an example drum loop to start 7500ms from now, play twice, stop
  amy.drums(my_clock+7501, 8);
  ### MB 20240807 ================================= */

}


void loop() 
{
  static long next_action_time = amy.sysclock()+100;  // ### MB 20240808
  static float frequency = 440.f;
  
  
  // In your loop you have to get the buffer of samples and then play it out your device
  short * samples = amy.render_to_buffer();
  I2S.write((uint8_t*)samples, AMY_BLOCK_SIZE*AMY_NCHANS*BYTES_PER_SAMPLE);

  my_clock = amy.sysclock();
  if(my_clock > next_action_time)
  {
    frequency += 0.5f;
    if(frequency > 4400.f)
      frequency = 440.f;
    e.freq_coefs[COEF_CONST] = frequency;
    amy.add_event(e);
    next_action_time = amy.sysclock()+100;
  }
}