Dot Matrix Drawing

1
2
3//We always have to include the library
4#include "LedControl.h"
5#include  <LiquidCrystal.h>
6/*
7 Now we need a LedControl to work with.
8 ***** These  pin numbers will probably not work with your hardware *****
9 pin 12 is connected  to the DataIn 
10 pin 11 is connected to LOAD(CS)
11 pin 10 is connected to the  CLK 
12 We have only a single MAX72XX.
13 */
14LedControl lc=LedControl(4,5,6,1);
15
16//  initialize the library with the numbers of the interface pins
17LiquidCrystal lcd(7,  8, 9, 10, 11, 12);
18
19/* we always wait a bit between updates of the display  */
20unsigned long delaytime1=500;
21unsigned long delaytime2=50;
22
23boolean  pixels[8][8];
24         
25
26const int SW_pin = 2; // digital pin connected  to switch output
27const int X_pin = 0; // analog pin connected to X output
28const  int Y_pin = 1; // analog pin connected to Y output
29
30
31int row = 4;
32int  column = 4;
33boolean cursorFlickerStatus = true;
34
35
36void setup() {
37
38    // set up the LCD's number of columns and rows:
39  lcd.begin(16, 2);
40  /*
41   The MAX72XX is in power-saving mode on startup,
42   we have to do a wakeup  call
43   */
44  lc.shutdown(0,false);
45  /* Set the brightness to a medium  values */
46  lc.setIntensity(0,0);
47  /* and clear the display */
48  lc.clearDisplay(0);
49
50  /* setup joystic */
51   pinMode(SW_pin, INPUT);
52  digitalWrite(SW_pin, HIGH);
53  Serial.begin(9600); 
54
55  for(int i=0; i < 8; i++)
56    for(int l=0; l <  8; l++)
57    {
58      pixels [i][l] = false;
59    }
60}
61
62
63void updateLED()
64{
65  lc.setLed(0,column,row,cursorFlickerStatus);  
66
67  for(int i=0; i < 8; i++)
68    for(int l=0; l < 8; l++)
69    {
70      lc.setLed(0,l,i,pixels[i][l]); 
71    }
72}
73
74void loop() 
75{ 
76
77  lcd.setCursor(0, 1);
78
79  String  output = "";
80  output+= "x:";
81  output+= column;
82  output+= "  y:";
83  output+= row;
84
85  lcd.print(output);
86  
87
88  cursorFlickerStatus =  !cursorFlickerStatus;
89
90    
91  if(digitalRead(SW_pin) == 0)
92  {
93   
94    pixels[row][column] = !pixels[row][column];
95    updateLED();
96    delay(1000);
97  }
98
99
100  if(analogRead(X_pin) < 512 -100 )
101  {
102
103    lc.setLed(0,column,row,false);  
104    
105    row = row -1;
106    if(row < 0)
107      row = 0; 
108    
109    updateLED();
110    delay(100);
111  }
112  else if(analogRead(X_pin) > 512  +100 )
113  {
114    lc.setLed(0,column,row,false);  
115    
116    row = row +1;
117    if(row > 7)
118      row = 7; 
119        
120    updateLED();
121    delay(100);
122  }
123
124   if(analogRead(Y_pin) < 512 -100 )
125  {
126
127    lc.setLed(0,column,row,false);  
128    
129    column = column -1;
130    if(column < 0)
131      column = 0;  
132    
133    updateLED();
134    delay(100);
135  }
136  else if(analogRead(Y_pin)  > 512 +100 )
137  {
138    lc.setLed(0,column,row,false);  
139    
140    column  = column +1;
141    if(column > 7)
142      column = 7; 
143        
144    updateLED();
145    delay(100);
146  }
147  
148  updateLED();
149
150}
151