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chalfant/sure_6432.pde

Created October 22, 2013 23:39
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sure_6432.pde
#include <avr/pgmspace.h>
int A_pin = 2; // Data pin for rows selection A
int B_pin = 3; // Data pin for rows selection B
int C_pin = 4; // Data pin for rows selection C
int D_pin = 5; // Data pin for rows selection D
int G1_pin = 9; //6; //green leds for uppwer rows
int G2_pin = 10; //7; //green leds for lower rows
// these pins may be switched (see forum)
int R1_pin = 11; //red leds for uppwer rows
int R2_pin = 12; //red leds for lower rows
int S_pin = 8; //Clock pin
int L_pin = 6; //9; //Latch pin
int E_pin = 7; //10; //Enable pin
int g1;
int g2;
int r1;
int r2;
int xdelay = 250;
unsigned long byte_checker = (unsigned long)1 << 0;
unsigned long displayBitmap[2*32*2]; // Bitmap for display
// The bitmap (64x32) is arranged with 8 bytes per row aligned on long.
// The upper 32 rows controls the Red LED's
// The lower 32 rows controls the Green LED's
// To get yellow, set both green and red at the same time... ;-)
/* CMC
* Looks like the bitmap is in x*y where x is the columns
* I'll need to reduce the number of rows to 16
* and modify the rest of the program to handle that
*/
const prog_uint8_t PROGMEM BitMap[8] = {
B10111110,
B10111110,
B10111110,
B10110110,
B10101010,
B10011100,
B10111110
};
prog_uchar PROGMEM myfont[256][5] = {
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 0
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 1
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 2
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 3
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 4
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 5
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 6
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 7
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 8
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 9
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 10
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 11
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 12
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 13
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 14
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 15
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 16
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 17
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 18
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 19
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 20
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 21
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 22
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 23
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 24
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 25
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 26
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 27
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 28
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 29
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 30
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 31
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 32
{ 0x00, 0x00, 0x7d, 0x00, 0x00 }, // 33
{ 0x00, 0x70, 0x00, 0x70, 0x00 }, // 34
{ 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // 35
{ 0x12, 0x2a, 0x7f, 0x2a, 0x24 }, // 36
{ 0x62, 0x64, 0x08, 0x13, 0x23 }, // 37
{ 0x36, 0x49, 0x55, 0x22, 0x05 }, // 38
{ 0x00, 0x50, 0x60, 0x00, 0x00 }, // 39
{ 0x00, 0x1c, 0x22, 0x41, 0x00 }, // 40
{ 0x00, 0x41, 0x22, 0x1c, 0x00 }, // 41
{ 0x14, 0x08, 0x3e, 0x08, 0x14 }, // 42
{ 0x08, 0x08, 0x3e, 0x08, 0x08 }, // 43
{ 0x00, 0x05, 0x06, 0x00, 0x00 }, // 44
{ 0x08, 0x08, 0x08, 0x08, 0x08 }, // 45
{ 0x00, 0x03, 0x03, 0x00, 0x00 }, // 46
{ 0x02, 0x04, 0x08, 0x10, 0x20 }, // 47
{ 0x3e, 0x45, 0x49, 0x51, 0x3e }, // 48
{ 0x00, 0x21, 0x7f, 0x01, 0x00 }, // 49
{ 0x21, 0x43, 0x45, 0x49, 0x31 }, // 50
{ 0x42, 0x41, 0x51, 0x69, 0x46 }, // 51
{ 0x0c, 0x14, 0x24, 0x7f, 0x04 }, // 52
{ 0x72, 0x51, 0x51, 0x51, 0x4e }, // 53
{ 0x1e, 0x29, 0x49, 0x49, 0x06 }, // 54
{ 0x40, 0x47, 0x48, 0x50, 0x60 }, // 55
{ 0x36, 0x49, 0x49, 0x49, 0x36 }, // 56
{ 0x30, 0x49, 0x49, 0x4a, 0x3c }, // 57
{ 0x00, 0x36, 0x36, 0x00, 0x00 }, // 58
{ 0x00, 0x35, 0x36, 0x00, 0x00 }, // 59
{ 0x08, 0x14, 0x22, 0x41, 0x00 }, // 60
{ 0x14, 0x14, 0x14, 0x14, 0x14 }, // 61
{ 0x41, 0x22, 0x14, 0x08, 0x00 }, // 62
{ 0x20, 0x40, 0x45, 0x48, 0x30 }, // 63
{ 0x26, 0x49, 0x4f, 0x41, 0x3e }, // 64
{ 0x3f, 0x44, 0x44, 0x44, 0x3f }, // 65
{ 0x7f, 0x49, 0x49, 0x49, 0x36 }, // 66
{ 0x3e, 0x41, 0x41, 0x41, 0x22 }, // 67
{ 0x7f, 0x41, 0x41, 0x41, 0x3e }, // 68
{ 0x7f, 0x49, 0x49, 0x49, 0x41 }, // 69
{ 0x7f, 0x48, 0x48, 0x48, 0x40 }, // 70
{ 0x3e, 0x41, 0x49, 0x49, 0x2f }, // 71
{ 0x7f, 0x08, 0x08, 0x08, 0x7f }, // 72
{ 0x00, 0x41, 0x7f, 0x41, 0x00 }, // 73
{ 0x02, 0x01, 0x41, 0x7e, 0x40 }, // 74
{ 0x7f, 0x08, 0x14, 0x22, 0x41 }, // 75
{ 0x7f, 0x01, 0x01, 0x01, 0x01 }, // 76
{ 0x7f, 0x40, 0x20, 0x40, 0x7f }, // 77
{ 0x7f, 0x10, 0x08, 0x04, 0x7f }, // 78
{ 0x3e, 0x41, 0x41, 0x41, 0x3e }, // 79
{ 0x7f, 0x48, 0x48, 0x48, 0x30 }, // 80
{ 0x3e, 0x41, 0x45, 0x42, 0x3d }, // 81
{ 0x7f, 0x48, 0x4c, 0x4a, 0x31 }, // 82
{ 0x31, 0x49, 0x49, 0x49, 0x46 }, // 83
{ 0x40, 0x40, 0x7f, 0x40, 0x40 }, // 84
{ 0x7e, 0x01, 0x01, 0x01, 0x7e }, // 85
{ 0x7c, 0x02, 0x01, 0x02, 0x7c }, // 86
{ 0x7e, 0x01, 0x0e, 0x01, 0x7e }, // 87
{ 0x63, 0x14, 0x08, 0x14, 0x63 }, // 88
{ 0x70, 0x08, 0x07, 0x08, 0x70 }, // 89
{ 0x43, 0x45, 0x49, 0x51, 0x61 }, // 90
{ 0x00, 0x7f, 0x41, 0x41, 0x00 }, // 91
{ 0x54, 0x34, 0x1f, 0x34, 0x54 }, // 92
{ 0x00, 0x41, 0x41, 0x7f, 0x00 }, // 93
{ 0x10, 0x20, 0x40, 0x20, 0x10 }, // 94
{ 0x01, 0x01, 0x01, 0x01, 0x01 }, // 95
{ 0x00, 0x40, 0x20, 0x10, 0x00 }, // 96
{ 0x02, 0x15, 0x15, 0x15, 0x0f }, // 97
{ 0x7f, 0x09, 0x11, 0x11, 0x0e }, // 98
{ 0x0e, 0x11, 0x11, 0x11, 0x02 }, // 99
{ 0x0e, 0x11, 0x11, 0x09, 0x7f }, // 100
{ 0x0e, 0x15, 0x15, 0x15, 0x0c }, // 101
{ 0x08, 0x3f, 0x48, 0x40, 0x20 }, // 102
{ 0x30, 0x49, 0x49, 0x49, 0x7e }, // 103
{ 0x7f, 0x08, 0x10, 0x10, 0x0f }, // 104
{ 0x00, 0x11, 0x5f, 0x01, 0x00 }, // 105
{ 0x02, 0x01, 0x21, 0x7e, 0x00 }, // 106
{ 0x7f, 0x04, 0x0a, 0x11, 0x00 }, // 107
{ 0x00, 0x41, 0x7f, 0x01, 0x00 }, // 108
{ 0x1f, 0x10, 0x0c, 0x10, 0x0f }, // 109
{ 0x1f, 0x08, 0x10, 0x10, 0x0f }, // 110
{ 0x0e, 0x11, 0x11, 0x11, 0x0e }, // 111
{ 0x1f, 0x14, 0x14, 0x14, 0x08 }, // 112
{ 0x08, 0x14, 0x14, 0x0c, 0x1f }, // 113
{ 0x1f, 0x08, 0x10, 0x10, 0x08 }, // 114
{ 0x09, 0x15, 0x15, 0x15, 0x12 }, // 115
{ 0x20, 0x7e, 0x21, 0x01, 0x02 }, // 116
{ 0x1e, 0x01, 0x01, 0x02, 0x1f }, // 117
{ 0x1c, 0x02, 0x01, 0x02, 0x1c }, // 118
{ 0x1e, 0x01, 0x06, 0x01, 0x1e }, // 119
{ 0x11, 0x0a, 0x04, 0x0a, 0x11 }, // 120
{ 0x18, 0x05, 0x05, 0x05, 0x1e }, // 121
{ 0x11, 0x13, 0x15, 0x19, 0x11 }, // 122
{ 0x00, 0x08, 0x36, 0x41, 0x00 }, // 123
{ 0x00, 0x00, 0x7f, 0x00, 0x00 }, // 124
{ 0x00, 0x41, 0x36, 0x08, 0x00 }, // 125
{ 0x08, 0x08, 0x2a, 0x1c, 0x08 }, // 126
{ 0x08, 0x1c, 0x2a, 0x08, 0x08 }, // 127
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 128
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 129
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 130
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 131
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 132
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 133
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 134
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 135
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 136
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 137
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 138
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 139
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 140
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 141
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 142
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 143
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 144
{ 0x07, 0x05, 0x07, 0x00, 0x00 }, // 145
{ 0x00, 0x00, 0x78, 0x40, 0x40 }, // 146
{ 0x01, 0x01, 0x0f, 0x00, 0x00 }, // 147
{ 0x04, 0x02, 0x01, 0x00, 0x00 }, // 148
{ 0x00, 0x0c, 0x0c, 0x00, 0x00 }, // 149
{ 0x28, 0x28, 0x29, 0x2a, 0x3c }, // 150
{ 0x10, 0x11, 0x16, 0x14, 0x18 }, // 151
{ 0x02, 0x04, 0x0f, 0x10, 0x00 }, // 152
{ 0x0c, 0x08, 0x19, 0x09, 0x0e }, // 153
{ 0x09, 0x09, 0x0f, 0x09, 0x09 }, // 154
{ 0x09, 0x0a, 0x0c, 0x1f, 0x08 }, // 155
{ 0x08, 0x1f, 0x08, 0x0a, 0x0c }, // 156
{ 0x01, 0x09, 0x09, 0x0f, 0x01 }, // 157
{ 0x15, 0x15, 0x15, 0x1f, 0x00 }, // 158
{ 0x0c, 0x00, 0x0d, 0x01, 0x0e }, // 159
{ 0x04, 0x04, 0x04, 0x04, 0x04 }, // 160
{ 0x40, 0x41, 0x5e, 0x48, 0x70 }, // 161
{ 0x04, 0x08, 0x1f, 0x20, 0x40 }, // 162
{ 0x38, 0x20, 0x61, 0x22, 0x3c }, // 163
{ 0x11, 0x11, 0x1f, 0x11, 0x11 }, // 164
{ 0x22, 0x24, 0x28, 0x7f, 0x20 }, // 165
{ 0x21, 0x7e, 0x20, 0x21, 0x3e }, // 166
{ 0x28, 0x28, 0x7f, 0x28, 0x28 }, // 167
{ 0x08, 0x31, 0x21, 0x22, 0x3c }, // 168
{ 0x10, 0x60, 0x21, 0x3e, 0x20 }, // 169
{ 0x21, 0x21, 0x21, 0x21, 0x3f }, // 170
{ 0x20, 0x79, 0x22, 0x7c, 0x20 }, // 171
{ 0x29, 0x29, 0x01, 0x02, 0x1c }, // 172
{ 0x21, 0x22, 0x24, 0x2a, 0x31 }, // 173
{ 0x20, 0x7e, 0x21, 0x29, 0x31 }, // 174
{ 0x30, 0x09, 0x01, 0x02, 0x3c }, // 175
{ 0x08, 0x31, 0x29, 0x26, 0x3c }, // 176
{ 0x28, 0x29, 0x3e, 0x48, 0x08 }, // 177
{ 0x30, 0x00, 0x31, 0x02, 0x3c }, // 178
{ 0x10, 0x51, 0x5e, 0x50, 0x10 }, // 179
{ 0x00, 0x7f, 0x08, 0x04, 0x00 }, // 180
{ 0x11, 0x12, 0x7c, 0x10, 0x10 }, // 181
{ 0x01, 0x21, 0x21, 0x21, 0x01 }, // 182
{ 0x21, 0x2a, 0x24, 0x2a, 0x30 }, // 183
{ 0x22, 0x24, 0x6f, 0x34, 0x22 }, // 184
{ 0x00, 0x01, 0x02, 0x7c, 0x00 }, // 185
{ 0x0f, 0x00, 0x20, 0x10, 0x0f }, // 186
{ 0x7e, 0x11, 0x11, 0x11, 0x11 }, // 187
{ 0x20, 0x21, 0x21, 0x22, 0x3c }, // 188
{ 0x10, 0x20, 0x10, 0x08, 0x06 }, // 189
{ 0x26, 0x20, 0x7f, 0x20, 0x26 }, // 190
{ 0x20, 0x24, 0x22, 0x25, 0x38 }, // 191
{ 0x00, 0x2a, 0x2a, 0x2a, 0x01 }, // 192
{ 0x0e, 0x12, 0x22, 0x02, 0x07 }, // 193
{ 0x01, 0x0a, 0x04, 0x0a, 0x30 }, // 194
{ 0x28, 0x3e, 0x29, 0x29, 0x29 }, // 195
{ 0x10, 0x7f, 0x10, 0x14, 0x18 }, // 196
{ 0x01, 0x21, 0x21, 0x3f, 0x01 }, // 197
{ 0x29, 0x29, 0x29, 0x29, 0x3f }, // 198
{ 0x10, 0x50, 0x51, 0x52, 0x1c }, // 199
{ 0x78, 0x01, 0x02, 0x7c, 0x00 }, // 200
{ 0x1f, 0x00, 0x3f, 0x01, 0x06 }, // 201
{ 0x3f, 0x01, 0x02, 0x04, 0x08 }, // 202
{ 0x3f, 0x21, 0x21, 0x21, 0x3f }, // 203
{ 0x38, 0x20, 0x21, 0x22, 0x3c }, // 204
{ 0x21, 0x21, 0x01, 0x02, 0x0c }, // 205
{ 0x20, 0x10, 0x40, 0x20, 0x00 }, // 206
{ 0x70, 0x50, 0x70, 0x00, 0x00 }, // 207
{ 0x0e, 0x11, 0x09, 0x06, 0x19 }, // 208
{ 0x02, 0x55, 0x15, 0x55, 0x0f }, // 209
{ 0x1f, 0x2a, 0x2a, 0x2a, 0x14 }, // 210
{ 0x0a, 0x15, 0x15, 0x11, 0x02 }, // 211
{ 0x3f, 0x02, 0x02, 0x04, 0x3e }, // 212
{ 0x0e, 0x11, 0x19, 0x15, 0x12 }, // 213
{ 0x0f, 0x12, 0x22, 0x22, 0x1c }, // 214
{ 0x1c, 0x22, 0x22, 0x22, 0x3f }, // 215
{ 0x02, 0x01, 0x1e, 0x10, 0x10 }, // 216
{ 0x20, 0x20, 0x00, 0x70, 0x00 }, // 217
{ 0x00, 0x00, 0x10, 0x5f, 0x00 }, // 218
{ 0x28, 0x10, 0x28, 0x00, 0x00 }, // 219
{ 0x18, 0x24, 0x7e, 0x24, 0x08 }, // 220
{ 0x14, 0x7f, 0x15, 0x01, 0x01 }, // 221
{ 0x1f, 0x48, 0x50, 0x50, 0x0f }, // 222
{ 0x0e, 0x51, 0x11, 0x51, 0x0e }, // 223
{ 0x3f, 0x12, 0x22, 0x22, 0x1c }, // 224
{ 0x1c, 0x22, 0x22, 0x12, 0x3f }, // 225
{ 0x3c, 0x52, 0x52, 0x52, 0x3c }, // 226
{ 0x03, 0x05, 0x02, 0x05, 0x06 }, // 227
{ 0x1a, 0x26, 0x20, 0x26, 0x1a }, // 228
{ 0x1e, 0x41, 0x01, 0x42, 0x1f }, // 229
{ 0x63, 0x55, 0x49, 0x41, 0x41 }, // 230
{ 0x22, 0x3c, 0x20, 0x3e, 0x22 }, // 231
{ 0x51, 0x4a, 0x44, 0x4a, 0x51 }, // 232
{ 0x3c, 0x02, 0x02, 0x02, 0x3f }, // 233
{ 0x28, 0x28, 0x3e, 0x28, 0x48 }, // 234
{ 0x22, 0x3c, 0x28, 0x28, 0x2e }, // 235
{ 0x3e, 0x28, 0x38, 0x28, 0x3e }, // 236
{ 0x04, 0x04, 0x15, 0x04, 0x04 }, // 237
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 238
{ 0x7f, 0x7f, 0x7f, 0x7f, 0x7f }, // 239
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 240
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 241
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 242
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 243
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 244
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 245
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 246
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 247
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 248
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 249
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 250
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 251
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 252
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 253
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // 254
{ 0x00, 0x00, 0x00, 0x00, 0x00 } // 255
};
char *disp[] = {" FUN WITH ", "ARDUINO!!!!!", " fun with ", "arduino :)"};
void setup(){
pinMode(A_pin, OUTPUT);
pinMode(B_pin, OUTPUT);
pinMode(C_pin, OUTPUT);
pinMode(D_pin, OUTPUT);
pinMode(G1_pin, OUTPUT);
pinMode(G2_pin, OUTPUT);
pinMode(R1_pin, OUTPUT);
pinMode(R2_pin, OUTPUT);
pinMode(S_pin, OUTPUT);
pinMode(L_pin, OUTPUT);
pinMode(E_pin, OUTPUT);
//set_pixel(1,3,3);
Serial.begin(9600);
// This setup code writes the string in char* disp[] to the display
// buffer once. This buffer will be read on each loop to setup the display
// TODO: Modify these for loops so they are not hardcoded to the string
// iterate over lines in char *disp[] (4 in example)
for (byte line=0; line < 4; ++line) {
// iterate over characters in current line (each line has 12 in example)
for (byte c=0; c<11; ++c) {
// iterate over each "column" in 5x7 character (one byte per column)
for (byte y=0; y<5; ++y) {
// fetch that column byte from the font store in myfont
byte data = (byte) pgm_read_byte (&myfont[ disp[line][c] ][y]);
// iterate over each row in the column byte
for (byte x=0; x<7; ++x) {
// if the current pixel in the row,column is 1, turn the led on
// but remember that the led_pin LOW is on.
//
// This sets the first line in the string to red
// all other lines green
if (data & (1<<x)) {
// on is off
int color = 2;
if (line > 1)
color = 1;
// since letters are 5x7, add space at the bottom and rt side
// to separate them. That makes 6x8
// set_pixel(row,column,color)
set_pixel((6-x) + (line * 8),y + (c*6),color);
} else {
//set_pixel(x,y,1);
}
}
}
}
}
}
void loop() {
// iterate over each row (wait, why only 16?)
for(int x=0; x<16; x++){ // start a line scan
digitalWrite(E_pin, HIGH);
byte_checker = (unsigned long)1 << 0; // reset to 1
// iterate over the 64 columns of the display
for(int y = 0; y < 64; y++) {
// We are going to use this PORT interface to the ATmega128
// to control the digital out pins instead of digitalWrite()
// so we need to setup a byte var which we will use to set
// those pins.
//000 R2 R1 G2 G1 CLK
byte row = B00011110; // Default to R[1|2] G[1|2] off and CLOCK to low.
// TODO: These need to be modified for a smaller display bitmap
// G1
g1 = x*2;
g2 = (x*2) + 32;
r1 = (x*2) + 64;
r2 = (x*2) + 96;
// if we hit column 32, reset byte_checker to 1. Why?
// I think because byte_checker is 32 bits long and we've
// shifted past it's left side.
if (y==32)
byte_checker = (unsigned long)1 << 0;
// if column > 31 add one to row we are going to use to lookup
// in the display bitmap. Why? Is this because the display bitmap
// is a one dimensional array standing in for a 2d matrix?
if (y > 31) {
g1++;
g2++;
r1++;
r2++;
}
// if the g1 pin should be set for this row,colum
// then xor equal the row at the g1 position (1 shift left 1)
if (displayBitmap[g1] & byte_checker)
row ^= (1 << 1);
if (displayBitmap[g2] & byte_checker)
row ^= (1 << 2);
if (displayBitmap[r1] & byte_checker)
row ^= (1 << 4);
if (displayBitmap[r2] & byte_checker)
row ^= (1 << 3);
byte_checker <<= 1;
PORTB = row; // this sets the pins 8-13 based on the byte row
delayMicroseconds(1); //needed to not toggle the clock too fast
PORTB |= B00000001; // Clock back to HIGH
}
digitalWrite(E_pin, LOW);
digitalWrite(L_pin,HIGH); // latch the data
digitalWrite(L_pin,LOW);
int pinState = 0;
int abcd_pins[] = {A_pin,B_pin,C_pin,D_pin};
// i still don't get this, the index is out of bounds and wiring
// doesn't throw an exception. So the first pin we are writing to
// is based on whatever's at the end of the abcd_pins[] array!
// I should probably change this to 3..0
// this sets the row selector (which may be different w/ my display)
for (int i=4; i>=0; i--) {
if ( x & (1<<i) )
pinState = 1;
else
pinState = 0;
digitalWrite(abcd_pins[i], pinState);
}
digitalWrite(E_pin, HIGH);
delayMicroseconds(xdelay);
}
}
void set_pixel(int x, int y, int color) {
// find byte location
int location = x*2;
if (y>31)
location++;
if ((color == 1) || (color == 3))
displayBitmap[location] ^= (unsigned long)1<<y%32;
if ((color == 2) || (color == 3))
displayBitmap[location+64] ^= (unsigned long)1<<y%32;
}
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