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

#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include <Wire.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

#define SWITCH 32
#define TRIG 5
#define ECHO 18

#define CM_TO_INCH 0.393701

Adafruit_MPU6050 mpu;

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

float ultraRun(int state){
  digitalWrite(TRIG, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG, LOW);

  int duration = pulseIn(ECHO, HIGH);
  float distance = duration * 0.034 / 2;
  if (state){
    return distance;
  }else{
    return distance * CM_TO_INCH;
  }
}

void setup() {
  Serial.begin(115200);

  pinMode(TRIG, OUTPUT);
  pinMode(ECHO, INPUT);
  pinMode(SWITCH, INPUT_PULLUP);

  if (!mpu.begin()) {
    Serial.println("Failed to find MPU6050 chip");
    while (1) {
      delay(10);
    }
  }
  Serial.println("MPU6050 ready!");
  Serial.println("A11 - Made Yosfin Saputra");
  delay(100);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(500);
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);
}

void loop() {
  sensors_event_t a, g, temp;
  mpu.getEvent(&a, &g, &temp);

  display.clearDisplay();
  display.setCursor(0, 0);
  display.print("Jarak: ");
  display.print(ultraRun(1));
  display.println(" cm");
  display.print("Jarak: ");
  display.print(ultraRun(0));
  display.println(" inchi");

  display.println("");
  if(digitalRead(SWITCH)){
    display.println("Acceleration");
    display.print("X: ");
    display.println(a.acceleration.x);
    display.print("Y: ");
    display.println(a.acceleration.y);
    display.print("Z: ");
    display.println(a.acceleration.z);
  }else{
    display.println("Gyro / Rotation");
    display.print("X: ");
    display.println(g.gyro.x);
    display.print("Y: ");
    display.println(g.gyro.y);
    display.print("Z: ");
    display.println(g.gyro.z);
  }

  display.print("Temperature: ");
  display.print(temp.temperature);
  display.print(" *C");

  display.display();
  delay(1000);
}