/*
 * Arduino Sketch for Allegro ACS758 Current Sensor (Basic Simple)
 * this sensor can measure current at range of up to 200A
 * It operates with 3.3 or 5V (the module works with 5V, sensor can work with 3.3 or 5V)
 * Please watch video instruction and explanation for this code.
 * 
 * Written by Ahmad Shamshiri on Saturday May 26,2018 at 19:05 at Ajax, Ontario, Canada
 * for Robojax.com
 * View the video instruction at https://youtu.be/SiHfjzcqnU4
 * This code has been downloaded from Robojax.com
 */

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"
#define TFT_DC 9
#define TFT_CS 10
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);



#define VIN A0
const float vcc    = 5.00;// supply voltage 5V or 3.3V
const float factor = 0.02;// 20mV/A is the factor

float voltage;
float currentEx = 0;



void setup() {

 tft.begin();

  tft.setCursor(26, 120);
  tft.setTextColor(ILI9341_RED);
  tft.setTextSize(2);
  tft.println("CargoRunner");

  tft.setCursor(20, 260);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println("grün = Antrieb, rot = Laden");

  // Meme reference: https://english.stackexchange.com/questions/20356/origin-of-i-can-haz




    //Robojax.com ACS758 Current Sensor 
    Serial.begin(9600);
    Serial.println("Robojax Tutorial");
    Serial.println("ACS758 Current Tester");
    Serial.println("Basic Simple Code");

delay(3000);

  tft.setCursor(26, 120);
  tft.setTextColor(ILI9341_BLACK);
  tft.setTextSize(2);
  tft.println("CargoRunner");


}

void loop() {
  //Robojax.com ACS758 Current Sensor 
  voltage =   (5.0 / 1023.0)* analogRead(VIN);// Read the voltage from sensor---Lesen Sie die Spannung vom Sensor ab
  voltage =  voltage - (vcc * 0.5) + 0.012 ;// 0.007 is a value to make voltage zero when there is no current--- 0,007 ist ein Wert, um die Spannung Null zu machen, wenn kein Strom vorhanden ist
  float current = voltage / factor;






  
  tft.setCursor(26, 120);
   tft.setTextColor(ILI9341_BLUE);
  tft.setTextSize(2);
  tft.println("Strom in A: ");

  if(currentEx != current)
  {
     tft.setCursor(26, 160);
     tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(3);
     tft.println(currentEx,2);
  }


 tft.setCursor(26, 160);
 if(current < 0)
 {
tft.setTextColor(ILI9341_RED);
}
else
{
  tft.setTextColor(ILI9341_GREEN);
}

 tft.setTextSize(3);
 tft.println(current,2);

  // tft.setCursor(36, 120);
  //tft.print("Spannung in V:");

  Serial.print("V: ");
  Serial.print(voltage,3);
  Serial.print("V, I: ");
  Serial.print(current,2); Serial.println("A");

  currentEx = current;


  delay(100);

  
}