#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

int trigPin=17;
int echoPin=16;

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
 
  long duration;
  double distance;

void setup() {
  Serial.begin(115200);
  pinMode(trigPin,OUTPUT);
  pinMode(echoPin,INPUT);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { 
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(100);
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  
}

void loop() {
 
  digitalWrite(trigPin,LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin,HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin,LOW);
  duration=pulseIn(echoPin,HIGH);
  distance=duration*0.034/2;
  
  display.clearDisplay();
  display.setCursor(0, 5);
  display.print("Distance");
  display.setCursor(0, 30);
  display.print(distance);
  display.print("cm");
  Serial.println(distance);

  
  delay(100);
  display.display();
}
//////////////////////////////////////////////////////////////
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
  short val;
void setup() {
  Serial.begin(115200);

  pinMode(39,INPUT);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { 
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(2000);
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  
}

void loop() {
 
  val=analogRead(39);
  display.clearDisplay();
  display.setCursor(0, 5);
  display.print(val);
  Serial.println(val);

  
  delay(200);
  display.display();
}