zhixiong zheng / L476RG_OLED_SSD1306

OLED

Dependents:   nucled_L476RG_OLED_Display

Fork of L152RE_OLED_SSD1306 by Charles Fhda

SSD1306/ssd1306.cpp@0:761e771590e5, 2014-06-26 (annotated)

Committer:
charlesfhda
Date:
Thu Jun 26 22:43:10 2014 +0000
Revision:
0:761e771590e5
Moved program files to new account.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
charlesfhda 0:761e771590e5 1
charlesfhda 0:761e771590e5 2 #include "mbed.h"
charlesfhda 0:761e771590e5 3 #include "ssd1306.h"
charlesfhda 0:761e771590e5 4
charlesfhda 0:761e771590e5 5 #include <stdarg.h>
charlesfhda 0:761e771590e5 6
charlesfhda 0:761e771590e5 7 #define pgm_read_byte(addr) (*(const unsigned char *)(addr))
charlesfhda 0:761e771590e5 8
charlesfhda 0:761e771590e5 9 SSD1306::SSD1306(PinName cs, PinName rs, PinName dc, PinName clk, PinName data)
charlesfhda 0:761e771590e5 10 : _spi(data, NC, clk),
charlesfhda 0:761e771590e5 11 _cs(cs),
charlesfhda 0:761e771590e5 12 _reset(rs),
charlesfhda 0:761e771590e5 13 _dc(dc),
charlesfhda 0:761e771590e5 14 _cursor_x(0),
charlesfhda 0:761e771590e5 15 _cursor_y(0)
charlesfhda 0:761e771590e5 16 {
charlesfhda 0:761e771590e5 17 }
charlesfhda 0:761e771590e5 18
charlesfhda 0:761e771590e5 19 void SSD1306::off()
charlesfhda 0:761e771590e5 20 {
charlesfhda 0:761e771590e5 21 _send_command(0xAE);
charlesfhda 0:761e771590e5 22 }
charlesfhda 0:761e771590e5 23
charlesfhda 0:761e771590e5 24 void SSD1306::on()
charlesfhda 0:761e771590e5 25 {
charlesfhda 0:761e771590e5 26 _send_command(0xAF);
charlesfhda 0:761e771590e5 27 }
charlesfhda 0:761e771590e5 28
charlesfhda 0:761e771590e5 29 void SSD1306::sleep()
charlesfhda 0:761e771590e5 30 {
charlesfhda 0:761e771590e5 31 _send_command(0xAE);
charlesfhda 0:761e771590e5 32 }
charlesfhda 0:761e771590e5 33
charlesfhda 0:761e771590e5 34 void SSD1306::wake()
charlesfhda 0:761e771590e5 35 {
charlesfhda 0:761e771590e5 36 _send_command(0xAF);
charlesfhda 0:761e771590e5 37 }
charlesfhda 0:761e771590e5 38
charlesfhda 0:761e771590e5 39 void SSD1306::set_inverse(unsigned char value)
charlesfhda 0:761e771590e5 40 {
charlesfhda 0:761e771590e5 41 _send_command(value ? 0xA7 : 0xA6);
charlesfhda 0:761e771590e5 42 }
charlesfhda 0:761e771590e5 43
charlesfhda 0:761e771590e5 44 void SSD1306::set_display_offset(unsigned char value)
charlesfhda 0:761e771590e5 45 {
charlesfhda 0:761e771590e5 46 _send_command(0xD3);
charlesfhda 0:761e771590e5 47 _send_command(value & 0x3F);
charlesfhda 0:761e771590e5 48 }
charlesfhda 0:761e771590e5 49
charlesfhda 0:761e771590e5 50 void SSD1306::set_contrast(unsigned char value)
charlesfhda 0:761e771590e5 51 {
charlesfhda 0:761e771590e5 52 _send_command(0x81);
charlesfhda 0:761e771590e5 53 _send_command(value);
charlesfhda 0:761e771590e5 54 }
charlesfhda 0:761e771590e5 55
charlesfhda 0:761e771590e5 56 void SSD1306::set_display_start_line(unsigned char value)
charlesfhda 0:761e771590e5 57 {
charlesfhda 0:761e771590e5 58 _send_command(0x40 | value);
charlesfhda 0:761e771590e5 59 }
charlesfhda 0:761e771590e5 60
charlesfhda 0:761e771590e5 61 void SSD1306::set_segment_remap(unsigned char value)
charlesfhda 0:761e771590e5 62 {
charlesfhda 0:761e771590e5 63 _send_command(value ? 0xA1 : 0xA0);
charlesfhda 0:761e771590e5 64 }
charlesfhda 0:761e771590e5 65
charlesfhda 0:761e771590e5 66 void SSD1306::set_multiplex_ratio(unsigned char value)
charlesfhda 0:761e771590e5 67 {
charlesfhda 0:761e771590e5 68 _send_command(0xA8);
charlesfhda 0:761e771590e5 69 _send_command(value & 0x3F);
charlesfhda 0:761e771590e5 70 }
charlesfhda 0:761e771590e5 71
charlesfhda 0:761e771590e5 72 void SSD1306::set_com_output_scan_direction(unsigned char value)
charlesfhda 0:761e771590e5 73 {
charlesfhda 0:761e771590e5 74 _send_command(value ? 0xC8 : 0xC0);
charlesfhda 0:761e771590e5 75 }
charlesfhda 0:761e771590e5 76
charlesfhda 0:761e771590e5 77 void SSD1306::set_com_pins_hardware_configuration(unsigned char sequential, unsigned char lr_remap)
charlesfhda 0:761e771590e5 78 {
charlesfhda 0:761e771590e5 79 _send_command(0xDA);
charlesfhda 0:761e771590e5 80 _send_command(0x02 | ((sequential & 1) << 4) | ((lr_remap & 1) << 5));
charlesfhda 0:761e771590e5 81 }
charlesfhda 0:761e771590e5 82
charlesfhda 0:761e771590e5 83 void SSD1306::start_horizontal_scroll(unsigned char direction, unsigned char start, unsigned char end, unsigned char interval)
charlesfhda 0:761e771590e5 84 {
charlesfhda 0:761e771590e5 85 _send_command(direction ? 0x27 : 0x26);
charlesfhda 0:761e771590e5 86 _send_command(0x00);
charlesfhda 0:761e771590e5 87 _send_command(start & 0x07);
charlesfhda 0:761e771590e5 88 switch (interval) {
charlesfhda 0:761e771590e5 89 case 2: _send_command(0x07); break; // 111b
charlesfhda 0:761e771590e5 90 case 3: _send_command(0x04); break; // 100b
charlesfhda 0:761e771590e5 91 case 4: _send_command(0x05); break; // 101b
charlesfhda 0:761e771590e5 92 case 5: _send_command(0x00); break; // 000b
charlesfhda 0:761e771590e5 93 case 25: _send_command(0x06); break; // 110b
charlesfhda 0:761e771590e5 94 case 64: _send_command(0x01); break; // 001b
charlesfhda 0:761e771590e5 95 case 128: _send_command(0x02); break; // 010b
charlesfhda 0:761e771590e5 96 case 256: _send_command(0x03); break; // 011b
charlesfhda 0:761e771590e5 97 default:
charlesfhda 0:761e771590e5 98 // default to 2 frame interval
charlesfhda 0:761e771590e5 99 _send_command(0x07); break;
charlesfhda 0:761e771590e5 100 }
charlesfhda 0:761e771590e5 101 _send_command(end & 0x07);
charlesfhda 0:761e771590e5 102 _send_command(0x00);
charlesfhda 0:761e771590e5 103 _send_command(0xFF);
charlesfhda 0:761e771590e5 104
charlesfhda 0:761e771590e5 105 // activate scroll
charlesfhda 0:761e771590e5 106 _send_command(0x2F);
charlesfhda 0:761e771590e5 107 }
charlesfhda 0:761e771590e5 108
charlesfhda 0:761e771590e5 109 void SSD1306::start_vertical_and_horizontal_scroll(unsigned char direction, unsigned char start, unsigned char end, unsigned char interval, unsigned char vertical_offset)
charlesfhda 0:761e771590e5 110 {
charlesfhda 0:761e771590e5 111 _send_command(direction ? 0x2A : 0x29);
charlesfhda 0:761e771590e5 112 _send_command(0x00);
charlesfhda 0:761e771590e5 113 _send_command(start & 0x07);
charlesfhda 0:761e771590e5 114 switch (interval) {
charlesfhda 0:761e771590e5 115 case 2: _send_command(0x07); break; // 111b
charlesfhda 0:761e771590e5 116 case 3: _send_command(0x04); break; // 100b
charlesfhda 0:761e771590e5 117 case 4: _send_command(0x05); break; // 101b
charlesfhda 0:761e771590e5 118 case 5: _send_command(0x00); break; // 000b
charlesfhda 0:761e771590e5 119 case 25: _send_command(0x06); break; // 110b
charlesfhda 0:761e771590e5 120 case 64: _send_command(0x01); break; // 001b
charlesfhda 0:761e771590e5 121 case 128: _send_command(0x02); break; // 010b
charlesfhda 0:761e771590e5 122 case 256: _send_command(0x03); break; // 011b
charlesfhda 0:761e771590e5 123 default:
charlesfhda 0:761e771590e5 124 // default to 2 frame interval
charlesfhda 0:761e771590e5 125 _send_command(0x07); break;
charlesfhda 0:761e771590e5 126 }
charlesfhda 0:761e771590e5 127 _send_command(end & 0x07);
charlesfhda 0:761e771590e5 128 _send_command(vertical_offset);
charlesfhda 0:761e771590e5 129
charlesfhda 0:761e771590e5 130 // activate scroll
charlesfhda 0:761e771590e5 131 _send_command(0x2F);
charlesfhda 0:761e771590e5 132 }
charlesfhda 0:761e771590e5 133
charlesfhda 0:761e771590e5 134 void SSD1306::stop_scroll()
charlesfhda 0:761e771590e5 135 {
charlesfhda 0:761e771590e5 136 // all scroll configurations are removed from the display when executing this command.
charlesfhda 0:761e771590e5 137 _send_command(0x2E);
charlesfhda 0:761e771590e5 138 }
charlesfhda 0:761e771590e5 139
charlesfhda 0:761e771590e5 140 void SSD1306::pam_set_start_address(unsigned char address)
charlesfhda 0:761e771590e5 141 {
charlesfhda 0:761e771590e5 142 // "Set Lower Column Start Address for Page Addressing Mode"
charlesfhda 0:761e771590e5 143 _send_command(address & 0x0F);
charlesfhda 0:761e771590e5 144
charlesfhda 0:761e771590e5 145 // "Set Higher Column Start Address for Page Addressing Mode"
charlesfhda 0:761e771590e5 146 _send_command((address << 4) & 0x0F);
charlesfhda 0:761e771590e5 147 }
charlesfhda 0:761e771590e5 148
charlesfhda 0:761e771590e5 149 void SSD1306::set_memory_addressing_mode(unsigned char mode)
charlesfhda 0:761e771590e5 150 {
charlesfhda 0:761e771590e5 151 _send_command(0x20);
charlesfhda 0:761e771590e5 152 _send_command(mode & 0x3);
charlesfhda 0:761e771590e5 153 }
charlesfhda 0:761e771590e5 154
charlesfhda 0:761e771590e5 155 void SSD1306::hv_set_column_address(unsigned char start, unsigned char end)
charlesfhda 0:761e771590e5 156 {
charlesfhda 0:761e771590e5 157 _send_command(0x21);
charlesfhda 0:761e771590e5 158 _send_command(start & 0x7F);
charlesfhda 0:761e771590e5 159 _send_command(end & 0x7F);
charlesfhda 0:761e771590e5 160 }
charlesfhda 0:761e771590e5 161
charlesfhda 0:761e771590e5 162 void SSD1306::hv_set_page_address(unsigned char start, unsigned char end)
charlesfhda 0:761e771590e5 163 {
charlesfhda 0:761e771590e5 164 _send_command(0x22);
charlesfhda 0:761e771590e5 165 _send_command(start & 0x07);
charlesfhda 0:761e771590e5 166 _send_command(end & 0x07);
charlesfhda 0:761e771590e5 167 }
charlesfhda 0:761e771590e5 168
charlesfhda 0:761e771590e5 169 void SSD1306::pam_set_page_start(unsigned char address)
charlesfhda 0:761e771590e5 170 {
charlesfhda 0:761e771590e5 171 _send_command(0xB0 | (address & 0x07));
charlesfhda 0:761e771590e5 172 }
charlesfhda 0:761e771590e5 173
charlesfhda 0:761e771590e5 174 void SSD1306::set_display_clock_ratio_and_frequency(unsigned char ratio, unsigned char frequency)
charlesfhda 0:761e771590e5 175 {
charlesfhda 0:761e771590e5 176 _send_command(0xD5);
charlesfhda 0:761e771590e5 177 _send_command((ratio & 0x0F) | ((frequency & 0x0F) << 4));
charlesfhda 0:761e771590e5 178 }
charlesfhda 0:761e771590e5 179
charlesfhda 0:761e771590e5 180 void SSD1306::set_precharge_period(unsigned char phase1, unsigned char phase2)
charlesfhda 0:761e771590e5 181 {
charlesfhda 0:761e771590e5 182 _send_command(0xD9);
charlesfhda 0:761e771590e5 183 _send_command((phase1 & 0x0F) | ((phase2 & 0x0F ) << 4));
charlesfhda 0:761e771590e5 184 }
charlesfhda 0:761e771590e5 185
charlesfhda 0:761e771590e5 186 void SSD1306::set_vcomh_deselect_level(unsigned char level)
charlesfhda 0:761e771590e5 187 {
charlesfhda 0:761e771590e5 188 _send_command(0xDB);
charlesfhda 0:761e771590e5 189 _send_command((level & 0x03) << 4);
charlesfhda 0:761e771590e5 190 }
charlesfhda 0:761e771590e5 191
charlesfhda 0:761e771590e5 192 void SSD1306::nop()
charlesfhda 0:761e771590e5 193 {
charlesfhda 0:761e771590e5 194 _send_command(0xE3);
charlesfhda 0:761e771590e5 195 }
charlesfhda 0:761e771590e5 196
charlesfhda 0:761e771590e5 197 void SSD1306::set_charge_pump_enable(unsigned char enable)
charlesfhda 0:761e771590e5 198 {
charlesfhda 0:761e771590e5 199 _send_command(0x8D);
charlesfhda 0:761e771590e5 200 _send_command(enable ? 0x14 : 0x10);
charlesfhda 0:761e771590e5 201 }
charlesfhda 0:761e771590e5 202
charlesfhda 0:761e771590e5 203 void SSD1306::initialise()
charlesfhda 0:761e771590e5 204 {
charlesfhda 0:761e771590e5 205 // Init
charlesfhda 0:761e771590e5 206 _reset = 1;
charlesfhda 0:761e771590e5 207 wait(0.01);
charlesfhda 0:761e771590e5 208 _reset = 0;
charlesfhda 0:761e771590e5 209 wait(0.10);
charlesfhda 0:761e771590e5 210 _reset = 1;
charlesfhda 0:761e771590e5 211
charlesfhda 0:761e771590e5 212 off();
charlesfhda 0:761e771590e5 213
charlesfhda 0:761e771590e5 214 set_display_clock_ratio_and_frequency(0, 8);
charlesfhda 0:761e771590e5 215 set_multiplex_ratio(0x3F); // 1/64 duty
charlesfhda 0:761e771590e5 216 set_precharge_period(0xF, 0x01);
charlesfhda 0:761e771590e5 217 set_display_offset(0);
charlesfhda 0:761e771590e5 218 set_display_start_line(0);
charlesfhda 0:761e771590e5 219 set_charge_pump_enable(1);
charlesfhda 0:761e771590e5 220 set_memory_addressing_mode(0); // horizontal addressing mode; across then down
charlesfhda 0:761e771590e5 221 set_segment_remap(1);
charlesfhda 0:761e771590e5 222 set_com_output_scan_direction(1);
charlesfhda 0:761e771590e5 223 set_com_pins_hardware_configuration(1, 0);
charlesfhda 0:761e771590e5 224 set_contrast(0xFF);
charlesfhda 0:761e771590e5 225 set_vcomh_deselect_level(1);
charlesfhda 0:761e771590e5 226
charlesfhda 0:761e771590e5 227 wake();
charlesfhda 0:761e771590e5 228 set_inverse(0);
charlesfhda 0:761e771590e5 229
charlesfhda 0:761e771590e5 230 hv_set_column_address(0, 127);
charlesfhda 0:761e771590e5 231 hv_set_page_address(0, 7);
charlesfhda 0:761e771590e5 232
charlesfhda 0:761e771590e5 233 pam_set_start_address(0);
charlesfhda 0:761e771590e5 234 pam_set_page_start(0);
charlesfhda 0:761e771590e5 235
charlesfhda 0:761e771590e5 236 // set_precharge_period(2, 2);
charlesfhda 0:761e771590e5 237 }
charlesfhda 0:761e771590e5 238
charlesfhda 0:761e771590e5 239 void SSD1306::update()
charlesfhda 0:761e771590e5 240 {
charlesfhda 0:761e771590e5 241 hv_set_column_address(0, 127);
charlesfhda 0:761e771590e5 242 hv_set_page_address(0, 7);
charlesfhda 0:761e771590e5 243
charlesfhda 0:761e771590e5 244 for (int i = 0; i < 1024; i++)
charlesfhda 0:761e771590e5 245 _send_data(_screen[i]);
charlesfhda 0:761e771590e5 246 }
charlesfhda 0:761e771590e5 247
charlesfhda 0:761e771590e5 248 void SSD1306::drawBitmap(int x, int y,
charlesfhda 0:761e771590e5 249 const unsigned char *bitmap, int w, int h, int color) {
charlesfhda 0:761e771590e5 250 int16_t i, j, byteWidth = (w + 7) / 8;
charlesfhda 0:761e771590e5 251
charlesfhda 0:761e771590e5 252 for(j=0; j<h; j++) {
charlesfhda 0:761e771590e5 253 for(i=0; i<w; i++ ) {
charlesfhda 0:761e771590e5 254 if(pgm_read_byte(bitmap + j * byteWidth + i / 8) & (128 >> (i & 7))) {
charlesfhda 0:761e771590e5 255 color? set_pixel(x+i, y+j): clear_pixel(x+i, y+j);
charlesfhda 0:761e771590e5 256 }
charlesfhda 0:761e771590e5 257 }
charlesfhda 0:761e771590e5 258 }
charlesfhda 0:761e771590e5 259 }
charlesfhda 0:761e771590e5 260
charlesfhda 0:761e771590e5 261 void SSD1306::set_pixel(int x, int y)
charlesfhda 0:761e771590e5 262 {
charlesfhda 0:761e771590e5 263 if (x >= SSD1306_LCDWIDTH || y >= SSD1306_LCDHEIGHT) return;
charlesfhda 0:761e771590e5 264
charlesfhda 0:761e771590e5 265 _screen[x + (y / 8) * 128] |= 1 << (y % 8);
charlesfhda 0:761e771590e5 266 }
charlesfhda 0:761e771590e5 267
charlesfhda 0:761e771590e5 268 void SSD1306::clear_pixel(int x, int y)
charlesfhda 0:761e771590e5 269 {
charlesfhda 0:761e771590e5 270 if (x >= SSD1306_LCDWIDTH || y >= SSD1306_LCDHEIGHT) return;
charlesfhda 0:761e771590e5 271
charlesfhda 0:761e771590e5 272 _screen[x + (y / 8) * 128] &= ~(1 << (y % 8));
charlesfhda 0:761e771590e5 273 }
charlesfhda 0:761e771590e5 274
charlesfhda 0:761e771590e5 275 void SSD1306::line(int x0, int y0, int x1, int y1) {
charlesfhda 0:761e771590e5 276 int steep = abs(y1 - y0) > abs(x1 - x0);
charlesfhda 0:761e771590e5 277 int t;
charlesfhda 0:761e771590e5 278
charlesfhda 0:761e771590e5 279 if (steep) {
charlesfhda 0:761e771590e5 280 t = x0; x0 = y0; y0 = t;
charlesfhda 0:761e771590e5 281 t = x1; x1 = y1; y1 = t;
charlesfhda 0:761e771590e5 282 }
charlesfhda 0:761e771590e5 283
charlesfhda 0:761e771590e5 284 if (x0 > x1) {
charlesfhda 0:761e771590e5 285 t = x0; x0 = x1; x1 = t;
charlesfhda 0:761e771590e5 286 t = y0; y0 = y1; y1 = t;
charlesfhda 0:761e771590e5 287 }
charlesfhda 0:761e771590e5 288
charlesfhda 0:761e771590e5 289 int dx, dy;
charlesfhda 0:761e771590e5 290
charlesfhda 0:761e771590e5 291 dx = x1 - x0;
charlesfhda 0:761e771590e5 292 dy = abs(y1 - y0);
charlesfhda 0:761e771590e5 293
charlesfhda 0:761e771590e5 294 int err = dx / 2;
charlesfhda 0:761e771590e5 295 int ystep;
charlesfhda 0:761e771590e5 296
charlesfhda 0:761e771590e5 297 if (y0 < y1) {
charlesfhda 0:761e771590e5 298 ystep = 1;
charlesfhda 0:761e771590e5 299 } else {
charlesfhda 0:761e771590e5 300 ystep = -1;}
charlesfhda 0:761e771590e5 301
charlesfhda 0:761e771590e5 302 for (; x0<x1; x0++) {
charlesfhda 0:761e771590e5 303 if (steep) {
charlesfhda 0:761e771590e5 304 set_pixel(y0, x0);
charlesfhda 0:761e771590e5 305 } else {
charlesfhda 0:761e771590e5 306 set_pixel(x0, y0);
charlesfhda 0:761e771590e5 307 }
charlesfhda 0:761e771590e5 308 err -= dy;
charlesfhda 0:761e771590e5 309 if (err < 0) {
charlesfhda 0:761e771590e5 310 y0 += ystep;
charlesfhda 0:761e771590e5 311 err += dx;
charlesfhda 0:761e771590e5 312 }
charlesfhda 0:761e771590e5 313 }
charlesfhda 0:761e771590e5 314 }
charlesfhda 0:761e771590e5 315
charlesfhda 0:761e771590e5 316 void SSD1306::set_font(unsigned char *font, unsigned int width)
charlesfhda 0:761e771590e5 317 {
charlesfhda 0:761e771590e5 318 _console_font_data = font;
charlesfhda 0:761e771590e5 319 _console_font_width = width;
charlesfhda 0:761e771590e5 320 }
charlesfhda 0:761e771590e5 321
charlesfhda 0:761e771590e5 322 void SSD1306::set_double_height_text(unsigned int double_height)
charlesfhda 0:761e771590e5 323 {
charlesfhda 0:761e771590e5 324 _double_height_text = double_height;
charlesfhda 0:761e771590e5 325 }
charlesfhda 0:761e771590e5 326
charlesfhda 0:761e771590e5 327 void SSD1306::putc(unsigned char c)
charlesfhda 0:761e771590e5 328 {
charlesfhda 0:761e771590e5 329 while (_cursor_x >= (128 / _console_font_width))
charlesfhda 0:761e771590e5 330 {
charlesfhda 0:761e771590e5 331 _cursor_x -= (128 / _console_font_width);
charlesfhda 0:761e771590e5 332 _cursor_y++;
charlesfhda 0:761e771590e5 333 }
charlesfhda 0:761e771590e5 334
charlesfhda 0:761e771590e5 335 while (_cursor_y > 7)
charlesfhda 0:761e771590e5 336 {
charlesfhda 0:761e771590e5 337 scroll_up();
charlesfhda 0:761e771590e5 338 }
charlesfhda 0:761e771590e5 339
charlesfhda 0:761e771590e5 340 switch (c)
charlesfhda 0:761e771590e5 341 {
charlesfhda 0:761e771590e5 342 case '\n':
charlesfhda 0:761e771590e5 343 _cursor_y++;
charlesfhda 0:761e771590e5 344 break;
charlesfhda 0:761e771590e5 345
charlesfhda 0:761e771590e5 346 case '\r':
charlesfhda 0:761e771590e5 347 _cursor_x = 0;
charlesfhda 0:761e771590e5 348 break;
charlesfhda 0:761e771590e5 349
charlesfhda 0:761e771590e5 350 case '\t':
charlesfhda 0:761e771590e5 351 _cursor_x = (_cursor_x + 4) % 4;
charlesfhda 0:761e771590e5 352 break;
charlesfhda 0:761e771590e5 353
charlesfhda 0:761e771590e5 354 default:
charlesfhda 0:761e771590e5 355 for (int b = 0; b < _console_font_width; b++)
charlesfhda 0:761e771590e5 356 {
charlesfhda 0:761e771590e5 357 _screen[_cursor_x * _console_font_width + _cursor_y * 128 + b] = _console_font_data[(c - FONT_START) * _console_font_width + b];
charlesfhda 0:761e771590e5 358 }
charlesfhda 0:761e771590e5 359
charlesfhda 0:761e771590e5 360 _cursor_x++;
charlesfhda 0:761e771590e5 361 }
charlesfhda 0:761e771590e5 362 }
charlesfhda 0:761e771590e5 363
charlesfhda 0:761e771590e5 364 void SSD1306::scroll_up()
charlesfhda 0:761e771590e5 365 {
charlesfhda 0:761e771590e5 366 for (int y = 1; y <= 7; y++)
charlesfhda 0:761e771590e5 367 {
charlesfhda 0:761e771590e5 368 for (int x = 0; x < 128; x++)
charlesfhda 0:761e771590e5 369 {
charlesfhda 0:761e771590e5 370 _screen[x + 128 * (y - 1)] = _screen[x + 128 * y];
charlesfhda 0:761e771590e5 371 }
charlesfhda 0:761e771590e5 372 }
charlesfhda 0:761e771590e5 373
charlesfhda 0:761e771590e5 374 for (int x = 0; x < 128; x++)
charlesfhda 0:761e771590e5 375 {
charlesfhda 0:761e771590e5 376 _screen[x + 128 * 7] = 0;
charlesfhda 0:761e771590e5 377 }
charlesfhda 0:761e771590e5 378
charlesfhda 0:761e771590e5 379 _cursor_y--;
charlesfhda 0:761e771590e5 380 }
charlesfhda 0:761e771590e5 381
charlesfhda 0:761e771590e5 382 void SSD1306::printf(const char *format, ...)
charlesfhda 0:761e771590e5 383 {
charlesfhda 0:761e771590e5 384 static char buffer[128];
charlesfhda 0:761e771590e5 385
charlesfhda 0:761e771590e5 386 va_list args;
charlesfhda 0:761e771590e5 387 va_start(args, format);
charlesfhda 0:761e771590e5 388 vsprintf(buffer, format, args);
charlesfhda 0:761e771590e5 389 va_end(args);
charlesfhda 0:761e771590e5 390
charlesfhda 0:761e771590e5 391 char *c = (char *)&buffer;
charlesfhda 0:761e771590e5 392 while (*c != 0)
charlesfhda 0:761e771590e5 393 {
charlesfhda 0:761e771590e5 394 putc(*c++);
charlesfhda 0:761e771590e5 395 }
charlesfhda 0:761e771590e5 396 }
charlesfhda 0:761e771590e5 397
charlesfhda 0:761e771590e5 398 void SSD1306::clear()
charlesfhda 0:761e771590e5 399 {
charlesfhda 0:761e771590e5 400 for (int i = 0; i < 1024; i++)
charlesfhda 0:761e771590e5 401 _screen[i] = 0;
charlesfhda 0:761e771590e5 402
charlesfhda 0:761e771590e5 403 _cursor_x = 0;
charlesfhda 0:761e771590e5 404 _cursor_y = 0;
charlesfhda 0:761e771590e5 405 }
charlesfhda 0:761e771590e5 406
charlesfhda 0:761e771590e5 407 void SSD1306::_send_command(unsigned char code)
charlesfhda 0:761e771590e5 408 {
charlesfhda 0:761e771590e5 409 _cs = 1;
charlesfhda 0:761e771590e5 410 _dc = 0;
charlesfhda 0:761e771590e5 411 _cs = 0;
charlesfhda 0:761e771590e5 412 _spi.write(code);
charlesfhda 0:761e771590e5 413 _cs = 1;
charlesfhda 0:761e771590e5 414 }
charlesfhda 0:761e771590e5 415
charlesfhda 0:761e771590e5 416 void SSD1306::_send_data(unsigned char value)
charlesfhda 0:761e771590e5 417 {
charlesfhda 0:761e771590e5 418 _cs = 1;
charlesfhda 0:761e771590e5 419 _dc = 1;
charlesfhda 0:761e771590e5 420 _cs = 0;
charlesfhda 0:761e771590e5 421 _spi.write(value);
charlesfhda 0:761e771590e5 422 _cs = 1;
charlesfhda 0:761e771590e5 423 }