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

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 32 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
// The pins for I2C are defined by the Wire-library. 
// On an arduino UNO:       A4(SDA), A5(SCL)
// On an arduino MEGA 2560: 20(SDA), 21(SCL)
// On an arduino LEONARDO:   2(SDA),  3(SCL), ...
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);



//my

int mapPin = A1;
int mapVal;
int mapAccuracy = 3;
int mapAccuracyDelay = 5;
float mapBarPressure;
//int mapBarPressure;

int offset = 102; // zero pressure adjust
int fullScale = 922; // max pressure (span) adjust

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

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }

  // Show initial display buffer contents on the screen --
  // the library initializes this with an Adafruit splash screen.
  //display.display();
  //delay(2000); // Pause for 2 seconds

  // Clear the buffer
  display.clearDisplay();

  // Draw a single pixel in white
  //display.drawPixel(10, 10, SSD1306_WHITE);
  display.setTextSize(3);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println("hello");
  // Show the display buffer on the screen. You MUST call display() after
  // drawing commands to make them visible on screen!
  display.display();
  delay(1000);
  // display.display() is NOT necessary after every single drawing command,
  // unless that's what you want...rather, you can batch up a bunch of
  // drawing operations and then update the screen all at once by calling
  // display.display(). These examples demonstrate both approaches...
  display.clearDisplay(); // Clear display buffer

}


void loop() {
  // put your main code here, to run repeatedly:



  //mapVal1 = analogRead(mapPin);
  //delay(10);
  //mapVal2 = analogRead(mapPin);
  //mapVal = (mapVal1 + mapVal2) / 2 ;
  for (int i=0;i<mapAccuracy;i++){
    mapVal += analogRead(mapPin);
    delay(mapAccuracyDelay);
  }
  mapVal /= mapAccuracy;

  //mapBarPressure = map(mapVal, 0, 1023, 0, 100);
  mapBarPressure = (mapVal - offset) * 4.0 / (fullScale - offset); // conversion

  //display.clearDisplay(); // Clear display buffer
  display.setTextSize(3);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(mapBarPressure, 1);
  display.setTextSize(1);
  display.println("Bar Boost");


  //display.println(F("Hello, world!"));
  display.display();
  delay(10);
  display.clearDisplay();





}