#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"

// For the Adafruit shield, these are the default.
const byte TFT_RST = 7;
const byte TFT_DC = 9;
const byte TFT_CS  = 10;

byte X = 20;
byte Y = 30;
byte W = 200;
byte H = 60;
byte progress = 0;
byte progressRead = 0;
const unsigned long runTime = 10000;
const unsigned long progInc = 20;
unsigned long runTimeCheck;


Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

void setup()
{
   Serial.begin(9600);
   Serial.println("ILI9341 bargraph Test!");
   tft.begin();
   tft.fillScreen(ILI9341_BLACK);
   tft.setCursor(0, 0);
   tft.setTextColor(ILI9341_WHITE);  tft.setTextSize(2);
   tft.println(" Purge Time");
   tft.drawRect(X, Y, W, H, ILI9341_WHITE);
   runTimeCheck = 0;

}


void loop(void)
{
   barProgress();
}

void barProgress()
{
   static unsigned long timer = 0;
   unsigned long interval = runTime/progInc*2;
   if (millis() - timer >= interval)
   {
      timer = millis();
      tft.fillRect(X, Y, progress+progInc, H, ILI9341_WHITE);
      tft.setCursor(10, 100);
      tft.print("Progress =  ");
      tft.fillRect(130, 100, 100, 200, ILI9341_BLACK); // erase old data
      tft.setCursor(140, 100);
      progressRead = (progress+progInc)/2;
      tft.println(progressRead);
      tft.setCursor(10, 120);
      tft.print("Run Time =  ");
      tft.setCursor(140, 120);      
      tft.println(runTimeCheck+interval);
      runTimeCheck += interval;
      progress += progInc;
      if(progress > 180)
      {
         while (1);  // finished just wait.  Take this out for your use.
         // or reset the numbers for another go
        
      }
   }
}