git.piffa.net Git - sketchbook_andrea/blob - hardware/8x8_LED_matrix/demo/demo.ino

   1 // From http://www.electrodragon.com/w/Dot_Matrix_Display_Kit_w/MAX7219_IC,_PCB
   2
   3 unsigned char i;
   4 unsigned char j;
   5 /*Port Definitions*/
   6 int Max7219_pinCLK = 10;
   7 int Max7219_pinCS = 9;
   8 int Max7219_pinDIN = 8;
   9
  10 unsigned char disp1[38][8]={
  11   {
  12     0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C  }
  13   ,//0
  14   {
  15     0x10,0x18,0x14,0x10,0x10,0x10,0x10,0x10  }
  16   ,//1
  17   {
  18     0x7E,0x2,0x2,0x7E,0x40,0x40,0x40,0x7E  }
  19   ,//2
  20   {
  21     0x3E,0x2,0x2,0x3E,0x2,0x2,0x3E,0x0  }
  22   ,//3
  23   {
  24     0x8,0x18,0x28,0x48,0xFE,0x8,0x8,0x8  }
  25   ,//4
  26   {
  27     0x3C,0x20,0x20,0x3C,0x4,0x4,0x3C,0x0  }
  28   ,//5
  29   {
  30     0x3C,0x20,0x20,0x3C,0x24,0x24,0x3C,0x0  }
  31   ,//6
  32   {
  33     0x3E,0x22,0x4,0x8,0x8,0x8,0x8,0x8  }
  34   ,//7
  35   {
  36     0x0,0x3E,0x22,0x22,0x3E,0x22,0x22,0x3E  }
  37   ,//8
  38   {
  39     0x3E,0x22,0x22,0x3E,0x2,0x2,0x2,0x3E  }
  40   ,//9
  41   {
  42     0x8,0x14,0x22,0x3E,0x22,0x22,0x22,0x22  }
  43   ,//A
  44   {
  45     0x3C,0x22,0x22,0x3E,0x22,0x22,0x3C,0x0  }
  46   ,//B
  47   {
  48     0x3C,0x40,0x40,0x40,0x40,0x40,0x3C,0x0  }
  49   ,//C
  50   {
  51     0x7C,0x42,0x42,0x42,0x42,0x42,0x7C,0x0  }
  52   ,//D
  53   {
  54     0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x7C  }
  55   ,//E
  56   {
  57     0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x40  }
  58   ,//F
  59   {
  60     0x3C,0x40,0x40,0x40,0x40,0x44,0x44,0x3C  }
  61   ,//G
  62   {
  63     0x44,0x44,0x44,0x7C,0x44,0x44,0x44,0x44  }
  64   ,//H
  65   {
  66     0x7C,0x10,0x10,0x10,0x10,0x10,0x10,0x7C  }
  67   ,//I
  68   {
  69     0x3C,0x8,0x8,0x8,0x8,0x8,0x48,0x30  }
  70   ,//J
  71   {
  72     0x0,0x24,0x28,0x30,0x20,0x30,0x28,0x24  }
  73   ,//K
  74   {
  75     0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x7C  }
  76   ,//L
  77   {
  78     0x81,0xC3,0xA5,0x99,0x81,0x81,0x81,0x81  }
  79   ,//M
  80   {
  81     0x0,0x42,0x62,0x52,0x4A,0x46,0x42,0x0  }
  82   ,//N
  83   {
  84     0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C  }
  85   ,//O
  86   {
  87     0x3C,0x22,0x22,0x22,0x3C,0x20,0x20,0x20  }
  88   ,//P
  89   {
  90     0x1C,0x22,0x22,0x22,0x22,0x26,0x22,0x1D  }
  91   ,//Q
  92   {
  93     0x3C,0x22,0x22,0x22,0x3C,0x24,0x22,0x21  }
  94   ,//R
  95   {
  96     0x0,0x1E,0x20,0x20,0x3E,0x2,0x2,0x3C  }
  97   ,//S
  98   {
  99     0x0,0x3E,0x8,0x8,0x8,0x8,0x8,0x8  }
 100   ,//T
 101   {
 102     0x42,0x42,0x42,0x42,0x42,0x42,0x22,0x1C  }
 103   ,//U
 104   {
 105     0x42,0x42,0x42,0x42,0x42,0x42,0x24,0x18  }
 106   ,//V
 107   {
 108     0x0,0x49,0x49,0x49,0x49,0x2A,0x1C,0x0  }
 109   ,//W
 110   {
 111     0x0,0x41,0x22,0x14,0x8,0x14,0x22,0x41  }
 112   ,//X
 113   {
 114     0x41,0x22,0x14,0x8,0x8,0x8,0x8,0x8  }
 115   ,//Y
 116   {
 117     0x0,0x7F,0x2,0x4,0x8,0x10,0x20,0x7F  }
 118   ,//Z
 119 };
 120
 121
 122
 123 void Write_Max7219_byte(unsigned char DATA)
 124 {
 125   unsigned char i;
 126   digitalWrite(Max7219_pinCS,LOW);
 127   for(i=8;i>=1;i--)
 128   {
 129     digitalWrite(Max7219_pinCLK,LOW);
 130     digitalWrite(Max7219_pinDIN,DATA&0x80);// Extracting a bit data
 131     DATA = DATA<<1;
 132     digitalWrite(Max7219_pinCLK,HIGH);
 133   }
 134 }
 135
 136
 137 void Write_Max7219(unsigned char address,unsigned char dat)
 138 {
 139   digitalWrite(Max7219_pinCS,LOW);
 140   Write_Max7219_byte(address);           //address，code of LED
 141   Write_Max7219_byte(dat);               //data，figure on LED
 142   digitalWrite(Max7219_pinCS,HIGH);
 143 }
 144
 145 void Init_MAX7219(void)
 146 {
 147   Write_Max7219(0x09, 0x00);       //decoding ：BCD
 148   Write_Max7219(0x0a, 0x03);       //brightness
 149   Write_Max7219(0x0b, 0x07);       //scanlimit；8 LEDs
 150   Write_Max7219(0x0c, 0x01);       //power-down mode：0，normal mode：1
 151   Write_Max7219(0x0f, 0x00);       //test display：1；EOT，display：0
 152 }
 153
 154
 155
 156 void setup()
 157 {
 158
 159   pinMode(Max7219_pinCLK,OUTPUT);
 160   pinMode(Max7219_pinCS,OUTPUT);
 161   pinMode(Max7219_pinDIN,OUTPUT);
 162   delay(50);
 163   Init_MAX7219();
 164 }
 165
 166
 167 void loop()
 168 {
 169   for(j=0;j<38;j++)
 170   {
 171     for(i=1;i<9;i++)
 172       Write_Max7219(i,disp1[j][i-1]);
 173     delay(500);
 174   }
 175 }
 176