//#include <driver/dac.h>
//https://randomnerdtutorials.com/getting-started-with-esp32/          This is th Req. Tutorial

//SINE WAVE https://www.youtube.com/watch?v=T4jg1j0XgWU

//Board can be ESP32 Dev Module/ESP 32 WROOM MODULE or DOIT ESP32 DEVKIT V1
//const int ledPin = 16;  // 16 corresponds to GPIO16 and D16 pin of Board

/*
 * Copyright (c) 2018, circuits4you.com
 * All rights reserved.
 * 
 * ESP32 DAC - Digital To Analog Conversion Example
 */

#define DAC1 25
#define DAC2 26
// the number of the LED pin
const int ledPin = 16;  // 16 corresponds to GPIO16

// setting PWM properties
const int freq = 5000;
const int ledChannel = 0;
const int resolution = 8;

float v = 0;
float v1 = 0;
float v3 = 0;
int v4 = 0;

float val = 0;

void setup() {
  // configure LED PWM functionalitites
  ledcSetup(ledChannel, freq, resolution);
  
  // attach the channel to the GPIO to be controlled
  ledcAttachPin(ledPin, ledChannel);
  pinMode(34,INPUT);
  pinMode(35,INPUT);

  
  
  Serial.begin(9600);
  
}

void loop() { // Generate a Sine wave
  
  int Value = 55; //255= 3.3V 128=1.65V
//v = analogRead(34);
//  v1 = analogRead(35);
  val = (analogRead(35)*3.3)/4095;
  // v1 = (analogRead(35)*3.3)/4095;
  Serial.println(val);
  // Serial.println(v1);
  
  int pwm = map(analogRead(34),0,4095,0,255);
 
       dacWrite(DAC2, pwm);
       ledcWrite(ledChannel, pwm);
 
 
//  int v4 = (v3*4095)/3.3;
 Serial.println((analogRead(35)*3.3)/4095);
  
//  int outputValue = map(v3, 0, 4095, 0, 255);
//  Serial.println(outputValue);
  Serial.println("-------------------");
  Serial.println(pwm);
//  dacWrite(DAC2, v4);
//  dacWrite(DAC1, Value);
//  ledcWrite(ledChannel, outputValue); //PWM
 delay (10);
}