Type letters on LCD

1//Include the LCD Library.
2#include <Wire.h> 
3#include <LiquidCrystal_I2C.h>
4
5LiquidCrystal_I2C  lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
6
7
8const int buttonPin1 = 2;     // Charachter change button
9const int buttonPin2 = 3;     // Move button
10const  int buttonPin3 = 4;     // Reset screen button
11const char chars[] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','.',',','1','2','3','4','5','6','7','8','9','0','-','*','@','!','$','&','(',')'};//add  any additional characters
12
13int charindex = 0;
14int buttonState1 = 0;
15int  buttonState2 = 0;
16int buttonState3 = 0;
17int charsSize = 0;
18int cx = 0;
19int  cy = 0;
20
21
22
23void setup() {
24  //init LCD
25  lcd.begin(16,2);
26  lcd.print("ARDUINO TYPE");
27  lcd.setCursor(2,4);
28  lcd.print("WRITER");
29  delay(2000);
30  lcd.clear();
31  lcd.setCursor(0, 0);
32  lcd.blink();  
33  //Charachters array size
34  charsSize = sizeof(chars);
35  //LED init
36  //  initialize the pushbutton pin as an input:
37  pinMode(buttonPin1, INPUT);
38  pinMode(buttonPin2, INPUT);
39  pinMode(buttonPin3, INPUT);
40  
41  
42}
43
44void  loop() {
45  buttonState1 = digitalRead(buttonPin1);
46  buttonState2 = digitalRead(buttonPin2);
47  buttonState3 = digitalRead(buttonPin3);
48  //
49  if (buttonState1 == HIGH)  {
50    if(charindex == charsSize){
51      charindex = 0;
52    }
53    //  change char and turn led on:
54
55    lcd.print(chars[charindex]);
56    lcd.setCursor(cx,  cy);
57    charindex++;
58  } else {
59
60  }
61  //Move to next pixel
62  if (buttonState2 == HIGH) {
63
64    charindex = 0;
65    cx++;
66    if(cx  == 16){
67      cx = 0;
68      cy++;
69    }
70    if(cy == 2){
71      cy  = 0;
72    }
73    lcd.setCursor(cx, cy);
74  }else {
75  
76  }
77  //reset
78  if (buttonState3 == HIGH) {
79  
80    charindex = 0;
81    cx = 0;
82    cy  = 0;
83    lcd.setCursor(cx, cy);
84    lcd.clear();
85  }else {
86
87  } 
88  delay(170);
89}
90