git.rot13.org Git - Arduino/blob - HUB12_simple/HUB12_simple.ino

   1
   2 /**************************************************************
   3 *
   4 *  Sample sketch for driving 32x16 LED PANEL (1/4 scan) with
   5 *  HUB12 protocol
   6 *
   7 *************************************************************/
   8
   9 #include <SPI.h>
  10
  11 //Pins specific for Mega .See Arduino SPI for a different board.
  12 #define A 22
  13 #define B 24
  14 #define OE 26
  15 #define R1 51
  16 #define CLK 52
  17 #define STB 53
  18
  19
  20 //row to be shown (1-4 since it is 1/4 scan)
  21 byte row=0;
  22
  23 //brightness: increase->more bright
  24 int br=500;
  25
  26 //some digits from a 8x8 font (numeric 1-8)
  27 byte digits[]={
  28
  29 0x04,  //1
  30 0x0C,
  31 0x04,
  32 0x04,
  33 0x04,
  34 0x04,
  35 0x0E,
  36 0x00,
  37
  38 0x0E, //2
  39 0x11,
  40 0x01,
  41 0x02,
  42 0x04,
  43 0x08,
  44 0x1F,
  45 0x00,
  46
  47
  48 0x1F, //3
  49 0x02,
  50 0x04,
  51 0x02,
  52 0x01,
  53 0x11,
  54 0x0E,
  55 0x00,
  56
  57 0x02, //4
  58 0x06,
  59 0x0A,
  60 0x12,
  61 0x1F,
  62 0x02,
  63 0x02,
  64 0x00,
  65
  66 0x1F, //5
  67 0x10,
  68 0x1E,
  69 0x01,
  70 0x01,
  71 0x11,
  72 0x0E,
  73 0x00,
  74
  75
  76 0x06, //6
  77 0x08,
  78 0x10,
  79 0x1E,
  80 0x11,
  81 0x11,
  82 0x0E,
  83 0x00,
  84
  85 0x1F,//7
  86 0x01,
  87 0x02,
  88 0x04,
  89 0x04,
  90 0x04,
  91 0x04,
  92 0x00,
  93
  94
  95 0x0E,//8
  96 0x11,
  97 0x11,
  98 0x0E,
  99 0x11,
 100 0x11,
 101 0x0E,
 102 0x00,
 103
 104
 105
 106
 107
 108 };
 109
 110
 111
 112 void setup () {
 113      pinMode(A, OUTPUT);
 114      pinMode(B, OUTPUT);
 115      pinMode(OE, OUTPUT);
 116      pinMode(R1, OUTPUT);
 117      pinMode(CLK, OUTPUT);
 118      pinMode(STB, OUTPUT);
 119      SPI.begin();
 120      delay(300);
 121 }
 122
 123
 124 //display alternatively scan lines
 125 void loop(){
 126        showRow(0);
 127        showRow(1);
 128        showRow(2);
 129        showRow(3);
 130 }
 131
 132
 133 //Load and show row (1-4) i.e. 1 and 5, 2 and 6.....
 134 void showRow(int row){
 135
 136       SPI.transfer(~(digits[row+36]));   //5
 137       SPI.transfer(~(digits[row+32]));
 138
 139       SPI.transfer(~(digits[row+4]));    //1
 140       SPI.transfer(~(digits[row]));
 141
 142       SPI.transfer(~(digits[row+44]));   //6
 143       SPI.transfer(~(digits[row+40]));
 144
 145       SPI.transfer(~(digits[row+12]));   //2
 146       SPI.transfer(~(digits[row+8]));
 147
 148       SPI.transfer(~(digits[row+52]));   //7
 149       SPI.transfer(~(digits[row+48]));
 150
 151       SPI.transfer(~(digits[row+20]));   //3
 152       SPI.transfer(~(digits[row+16]));
 153
 154       SPI.transfer(~(digits[row+60]));   //8
 155       SPI.transfer(~(digits[row+56]));
 156
 157       SPI.transfer(~(digits[row+28]));   //4
 158       SPI.transfer(~(digits[row+24]));
 159
 160       digitalWrite(STB,LOW);
 161       digitalWrite(STB,HIGH);
 162
 163       scanrow(row);//enable encoder for the line loaded
 164
 165       //PWM like. Change br to adjust brightnes
 166       digitalWrite(OE,HIGH);
 167       delayMicroseconds(br);
 168       digitalWrite(OE,LOW);
 169       delayMicroseconds(900);
 170
 171
 172 }
 173
 174 //enable encoder for this row in order to show it
 175 void scanrow(int r){
 176     if(r==0){
 177       digitalWrite(A,0);
 178       digitalWrite(B,0);
 179     }
 180     else if(r==1){
 181       digitalWrite(A,1);
 182       digitalWrite(B,0);
 183     }
 184     else if(r==2){
 185       digitalWrite(A,0);
 186       digitalWrite(B,1);
 187     }
 188     else if(r==3){
 189       digitalWrite(A,1);
 190       digitalWrite(B,1);
 191     }
 192 }
 193
 194