Stream Generator variable with VS1053

[TangerineDreamer]

Hello Pshatzmann,i'm having fun with your VS1053 library and the generator,but only one frequency is to me frustrating,i tried the generator sketch with a global variable
coming from and ADC input where a potentiometer is wired,the skech is:

//----------------------------------------------------------------

/*

• SCK SPI Serial Clock ->18
  MISO SPI Master Input ← Slave Output ->19
  MOSI SPI Master Output → Slave Input ->23
  (X)CS SPI Chip Select/ Configured in Sketch ->5
  (X)DCS Data Chip Select: Configured in Sketch ->16
  DREQ Data Request: Configured in Sketch ->4
  XRST Hardware Reset Pin: low=reset ->15

*/
#include "AudioTools.h"
#include "AudioLibs/VS1053Stream.h"

uint16_t sample_rate=44100;
uint8_t channels = 2;
uint8_t bits_per_sample = 16;

const int potPin = 34;//potentiometer settings
int potValue;

SineWaveGenerator<int16_t> sineWave(potValue); //variable generator

GeneratedSoundStream<int16_t> sound(sineWave);
VS1053Stream out; // VS1053 output
StreamCopy copier(out, sound); // copy sound to decoder

void setup(){
Serial.begin(115200);
AudioLogger::instance().begin(Serial, AudioLogger::Warning);

// Setup sine wave
sineWave.begin(channels, sample_rate, N_A4);

// setup output
auto cfg = out.defaultConfig();
cfg.sample_rate = sample_rate;
cfg.channels = channels;
cfg.bits_per_sample = bits_per_sample;
// Use your custom pins or define in AudioCodnfig.h
//cfg.cs_pin = VS1053_CS;
//cfg.dcs_pin = VS1053_DCS;
//cfg.dreq_pin = VS1053_DREQ;
//cfg.reset_pin = VS1053_RESET;
out.begin(cfg);

}

void loop(){
copier.copy();

potValue = analogRead(potPin); //getting values from the pot
Serial.println(potValue);
}

//---------------------------------------------------------------
Nothing is changed and i can't hear anything.
I know it's a candid modification of the sketch,but is it possible to vary
the frequency?

[pschatzmann]

I suggest that you have a look at the the synthesizer examples in the AudioKit directory: e.g. https://github.com/pschatzmann/arduino-audio-tools/blob/main/examples/examples-audiokit/streams-synthbasic1-audiokit/streams-synthbasic1-audiokit.ino

[TangerineDreamer]

Thank you for this very fast reply :)
i guess i have to play with this function:

void actionKeyOn(bool active, int pin, void* ptr){
int freq = ((int)ptr);
sine.setFrequency(freq);
in.begin();
}

I'll have a try with :)