#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED width,  in pixels
#define SCREEN_HEIGHT 64 // OLED height, in pixels
#define POT A1 // A1 ADC for LGT8F328
#define BUZ A3

int sensorValue = 0;

// create an OLED display object connected to I2C
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  Serial.begin(9600);

  // initialize OLED display with I2C address 0x3C
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("failed to start SSD1306 OLED"));
    while (1);
  }
  
  delay(1000);         // initialising

  pinMode(BUZ, OUTPUT); // Set buzzer - pin 9 as an output

  oled.clearDisplay(); // clear display
  oled.setTextSize(1);         // set text size
  oled.setTextColor(WHITE);    // set text color
  oled.println("Initializing..");
  oled.display(); 
}

void loop() {
  sensorValue = analogRead(POT);
  int val = map(sensorValue, 0, 717, 1, 255);
  int buzzerValue = map(sensorValue, 0, 717, 10, 1000);

  oled.clearDisplay();      // clear display
  oled.setCursor(0, 0);     // set position to display (x,y)
  sensorValue = (sensorValue > 715) ? 717: sensorValue;
  val = (val > 250) ? 255: val;
  oled.println("Pot: " + String(sensorValue) + " " + String(val));
  oled.println("Buz: " + String(buzzerValue));
  oled.display(); 
  
  if (buzzerValue > 60) {
    tone(BUZ, buzzerValue);
  } else {
    noTone(BUZ);
  }

  delay(1000);
}