/*
Voltaat learn (http://learn.voltaat.com)
Link for full tutorial:

Tutorial: Control servo motor with Joystick and Arduino!
Wire Library:
Adafruit_GFX Library:
Wire Library:


The purpose of this sketch is to use a joystick to control the servo motor shaft to sweep back
and forth across 180 degrees with Arduino and display the angle of servo motor on a TFT Display.


Connections from the Arduino to the breadboard:

• Arduino GND pin → Breadboard ground line

• Arduino 5V pin → Breadboard 5V line

Connections from the servo motor:

• Servo GND pin→ Arduino GND pin

• Servo VCC pin→ Arduino VCC pin

• Servo signal pin → Arduino pin 4

Connections from the joystick:

• joystick GND pin→ Arduino GND pin

• joystick VCC pin→ Arduino VCC pin

• joystick x_axis pin → Arduino pin A0


Connections from the TFT Display to the breadboard:

• TFT Display VCC pin → Breadboard 5V line

• TFT Display GND pin → Breadboard ground line

• TFT Display LED pin → Breadboard 5V line


Connections from the l298n motor driver to arduino :

• TFT Display CS pin → Arduino pin 10

• TFT Display RST pin → Arduino pin 8

• TFT Display DC pin → Arduino pin 9

• TFT Display MOSI pin → Arduino pin 11

• TFT Display SCK pin → Arduino pin 13

• TFT Display MISO pin → Arduino pin 12

*/

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

Servo servo;
int x_axis;
float servo_val;

//Define pin numbers
#define TFT_DC 9              
#define TFT_CS 10            
#define TFT_RST 8            
#define TFT_MISO 12          
#define TFT_MOSI 11          
#define TFT_CLK 13          

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_MOSI, TFT_CLK, TFT_RST, TFT_MISO);

char ANGLEChar[10];
 
void setup(){
 
Serial.begin(9600);
tft.begin();                      
tft.setRotation(0);            
tft.fillScreen(ILI9341_GREEN);

pinMode(A0,INPUT);
servo.attach(3);

Wire.begin();
printText("SERVO ANGLE:", ILI9341_WHITE,20,130,3);

}

void loop()
{

x_axis=analogRead(A0);

servo_val=map(x_axis,0,1023,180,0);

servo.write(servo_val);

//Convert float to string
String servo_valString = String(servo_val,1);
servo_valString.toCharArray(ANGLEChar,10);
//Draw a Rectangle
tft.fillRect(50,175,150,40,ILI9341_BLACK);
//printing the servo angle value on the TFT Display
printText(ANGLEChar, ILI9341_WHITE,50,180,4);

}
//The function of writing words on the TFT Display
void printText(char *text, uint16_t color, int x, int y,int textSize)
{
 tft.setCursor(x, y);
 tft.setTextColor(color);
 tft.setTextSize(textSize);
 tft.setTextWrap(true);
 tft.print(text);
}