derived from Aidafruit SSD1306 library
Dependents: Test_SSD1306 L152RE_OLED_SSD1306 EcranZumo
Fork of SSD1306 by
ssd1306.cpp@2:e479b0296757, 2013-02-05 (annotated)
- Committer:
- Byrn
- Date:
- Tue Feb 05 21:21:22 2013 +0000
- Revision:
- 2:e479b0296757
- Parent:
- 1:1d58d378221c
- Child:
- 3:1d9df877c90a
commit before initial publish
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Byrn | 0:21cb91208386 | 1 | |
Byrn | 0:21cb91208386 | 2 | #include "mbed.h" |
Byrn | 0:21cb91208386 | 3 | #include "ssd1306.h" |
Byrn | 0:21cb91208386 | 4 | |
Byrn | 0:21cb91208386 | 5 | SSD1306::SSD1306(PinName cs, PinName rs, PinName dc, PinName clk, PinName data) |
Byrn | 1:1d58d378221c | 6 | : _spi(data, NC, clk), |
Byrn | 1:1d58d378221c | 7 | _cs(cs), |
Byrn | 1:1d58d378221c | 8 | _reset(rs), |
Byrn | 1:1d58d378221c | 9 | _dc(dc) |
Byrn | 0:21cb91208386 | 10 | { |
Byrn | 0:21cb91208386 | 11 | } |
Byrn | 0:21cb91208386 | 12 | |
Byrn | 0:21cb91208386 | 13 | void SSD1306::off() |
Byrn | 0:21cb91208386 | 14 | { |
Byrn | 2:e479b0296757 | 15 | _send_command(0xAE); |
Byrn | 0:21cb91208386 | 16 | } |
Byrn | 0:21cb91208386 | 17 | |
Byrn | 0:21cb91208386 | 18 | void SSD1306::on() |
Byrn | 0:21cb91208386 | 19 | { |
Byrn | 2:e479b0296757 | 20 | _send_command(0xAF); |
Byrn | 0:21cb91208386 | 21 | } |
Byrn | 0:21cb91208386 | 22 | |
Byrn | 1:1d58d378221c | 23 | void SSD1306::sleep() |
Byrn | 1:1d58d378221c | 24 | { |
Byrn | 1:1d58d378221c | 25 | _send_command(0xAE); |
Byrn | 1:1d58d378221c | 26 | } |
Byrn | 1:1d58d378221c | 27 | |
Byrn | 1:1d58d378221c | 28 | void SSD1306::wake() |
Byrn | 0:21cb91208386 | 29 | { |
Byrn | 1:1d58d378221c | 30 | _send_command(0xAF); |
Byrn | 1:1d58d378221c | 31 | } |
Byrn | 1:1d58d378221c | 32 | |
Byrn | 1:1d58d378221c | 33 | void SSD1306::set_inverse(unsigned char value) |
Byrn | 1:1d58d378221c | 34 | { |
Byrn | 1:1d58d378221c | 35 | _send_command(value ? 0xA7 : 0xA6); |
Byrn | 1:1d58d378221c | 36 | } |
Byrn | 1:1d58d378221c | 37 | |
Byrn | 1:1d58d378221c | 38 | void SSD1306::set_display_offset(unsigned char value) |
Byrn | 1:1d58d378221c | 39 | { |
Byrn | 1:1d58d378221c | 40 | _send_command(0xD3); |
Byrn | 2:e479b0296757 | 41 | _send_command(value & 0x3F); |
Byrn | 0:21cb91208386 | 42 | } |
Byrn | 0:21cb91208386 | 43 | |
Byrn | 1:1d58d378221c | 44 | void SSD1306::set_contrast(unsigned char value) |
Byrn | 1:1d58d378221c | 45 | { |
Byrn | 1:1d58d378221c | 46 | _send_command(0x81); |
Byrn | 1:1d58d378221c | 47 | _send_command(value); |
Byrn | 1:1d58d378221c | 48 | } |
Byrn | 1:1d58d378221c | 49 | |
Byrn | 1:1d58d378221c | 50 | void SSD1306::set_display_start_line(unsigned char value) |
Byrn | 1:1d58d378221c | 51 | { |
Byrn | 1:1d58d378221c | 52 | _send_command(0x40 | value); |
Byrn | 1:1d58d378221c | 53 | } |
Byrn | 1:1d58d378221c | 54 | |
Byrn | 2:e479b0296757 | 55 | void SSD1306::set_segment_remap(unsigned char value) |
Byrn | 0:21cb91208386 | 56 | { |
Byrn | 1:1d58d378221c | 57 | _send_command(value ? 0xA1 : 0xA0); |
Byrn | 1:1d58d378221c | 58 | } |
Byrn | 1:1d58d378221c | 59 | |
Byrn | 1:1d58d378221c | 60 | void SSD1306::set_multiplex_ratio(unsigned char value) |
Byrn | 1:1d58d378221c | 61 | { |
Byrn | 2:e479b0296757 | 62 | _send_command(0xA8); |
Byrn | 2:e479b0296757 | 63 | _send_command(value & 0x3F); |
Byrn | 1:1d58d378221c | 64 | } |
Byrn | 1:1d58d378221c | 65 | |
Byrn | 1:1d58d378221c | 66 | void SSD1306::set_com_output_scan_direction(unsigned char value) |
Byrn | 1:1d58d378221c | 67 | { |
Byrn | 1:1d58d378221c | 68 | _send_command(value ? 0xC8 : 0xC0); |
Byrn | 1:1d58d378221c | 69 | } |
Byrn | 1:1d58d378221c | 70 | |
Byrn | 1:1d58d378221c | 71 | void SSD1306::set_com_pins_hardware_configuration(unsigned char sequential, unsigned char lr_remap) |
Byrn | 1:1d58d378221c | 72 | { |
Byrn | 1:1d58d378221c | 73 | _send_command(0xDA); |
Byrn | 2:e479b0296757 | 74 | _send_command(0x02 | ((sequential & 1) << 4) | ((lr_remap & 1) << 5)); |
Byrn | 2:e479b0296757 | 75 | } |
Byrn | 2:e479b0296757 | 76 | |
Byrn | 2:e479b0296757 | 77 | void SSD1306::start_horizontal_scroll(unsigned char direction, unsigned char start, unsigned char end, unsigned char interval) |
Byrn | 2:e479b0296757 | 78 | { |
Byrn | 2:e479b0296757 | 79 | _send_command(direction ? 0x27 : 0x26); |
Byrn | 2:e479b0296757 | 80 | _send_command(0x00); |
Byrn | 2:e479b0296757 | 81 | _send_command(start & 0x07); |
Byrn | 2:e479b0296757 | 82 | switch (interval) { |
Byrn | 2:e479b0296757 | 83 | case 2: _send_command(0x07); break; // 111b |
Byrn | 2:e479b0296757 | 84 | case 3: _send_command(0x04); break; // 100b |
Byrn | 2:e479b0296757 | 85 | case 4: _send_command(0x05); break; // 101b |
Byrn | 2:e479b0296757 | 86 | case 5: _send_command(0x00); break; // 000b |
Byrn | 2:e479b0296757 | 87 | case 25: _send_command(0x06); break; // 110b |
Byrn | 2:e479b0296757 | 88 | case 64: _send_command(0x01); break; // 001b |
Byrn | 2:e479b0296757 | 89 | case 128: _send_command(0x02); break; // 010b |
Byrn | 2:e479b0296757 | 90 | case 256: _send_command(0x03); break; // 011b |
Byrn | 2:e479b0296757 | 91 | default: |
Byrn | 2:e479b0296757 | 92 | // default to 2 frame interval |
Byrn | 2:e479b0296757 | 93 | _send_command(0x07); break; |
Byrn | 2:e479b0296757 | 94 | } |
Byrn | 2:e479b0296757 | 95 | _send_command(end & 0x07); |
Byrn | 2:e479b0296757 | 96 | _send_command(0x00); |
Byrn | 2:e479b0296757 | 97 | _send_command(0xFF); |
Byrn | 2:e479b0296757 | 98 | |
Byrn | 2:e479b0296757 | 99 | // activate scroll |
Byrn | 2:e479b0296757 | 100 | _send_command(0x2F); |
Byrn | 2:e479b0296757 | 101 | } |
Byrn | 2:e479b0296757 | 102 | |
Byrn | 2:e479b0296757 | 103 | void SSD1306::start_vertical_and_horizontal_scroll(unsigned char direction, unsigned char start, unsigned char end, unsigned char interval, unsigned char vertical_offset) |
Byrn | 2:e479b0296757 | 104 | { |
Byrn | 2:e479b0296757 | 105 | _send_command(direction ? 0x2A : 0x29); |
Byrn | 2:e479b0296757 | 106 | _send_command(0x00); |
Byrn | 2:e479b0296757 | 107 | _send_command(start & 0x07); |
Byrn | 2:e479b0296757 | 108 | switch (interval) { |
Byrn | 2:e479b0296757 | 109 | case 2: _send_command(0x07); break; // 111b |
Byrn | 2:e479b0296757 | 110 | case 3: _send_command(0x04); break; // 100b |
Byrn | 2:e479b0296757 | 111 | case 4: _send_command(0x05); break; // 101b |
Byrn | 2:e479b0296757 | 112 | case 5: _send_command(0x00); break; // 000b |
Byrn | 2:e479b0296757 | 113 | case 25: _send_command(0x06); break; // 110b |
Byrn | 2:e479b0296757 | 114 | case 64: _send_command(0x01); break; // 001b |
Byrn | 2:e479b0296757 | 115 | case 128: _send_command(0x02); break; // 010b |
Byrn | 2:e479b0296757 | 116 | case 256: _send_command(0x03); break; // 011b |
Byrn | 2:e479b0296757 | 117 | default: |
Byrn | 2:e479b0296757 | 118 | // default to 2 frame interval |
Byrn | 2:e479b0296757 | 119 | _send_command(0x07); break; |
Byrn | 2:e479b0296757 | 120 | } |
Byrn | 2:e479b0296757 | 121 | _send_command(end & 0x07); |
Byrn | 2:e479b0296757 | 122 | _send_command(vertical_offset); |
Byrn | 2:e479b0296757 | 123 | |
Byrn | 2:e479b0296757 | 124 | // activate scroll |
Byrn | 2:e479b0296757 | 125 | _send_command(0x2F); |
Byrn | 2:e479b0296757 | 126 | } |
Byrn | 2:e479b0296757 | 127 | |
Byrn | 2:e479b0296757 | 128 | void SSD1306::stop_scroll() |
Byrn | 2:e479b0296757 | 129 | { |
Byrn | 2:e479b0296757 | 130 | // all scroll configurations are removed from the display when executing this command. |
Byrn | 2:e479b0296757 | 131 | _send_command(0x2E); |
Byrn | 2:e479b0296757 | 132 | } |
Byrn | 2:e479b0296757 | 133 | |
Byrn | 2:e479b0296757 | 134 | void SSD1306::pam_set_start_address(unsigned char address) |
Byrn | 2:e479b0296757 | 135 | { |
Byrn | 2:e479b0296757 | 136 | // "Set Lower Column Start Address for Page Addressing Mode" |
Byrn | 2:e479b0296757 | 137 | _send_command(address & 0x0F); |
Byrn | 2:e479b0296757 | 138 | |
Byrn | 2:e479b0296757 | 139 | // "Set Higher Column Start Address for Page Addressing Mode" |
Byrn | 2:e479b0296757 | 140 | _send_command((address << 4) & 0x0F); |
Byrn | 2:e479b0296757 | 141 | } |
Byrn | 2:e479b0296757 | 142 | |
Byrn | 2:e479b0296757 | 143 | void SSD1306::set_memory_addressing_mode(unsigned char mode) |
Byrn | 2:e479b0296757 | 144 | { |
Byrn | 2:e479b0296757 | 145 | _send_command(0x20); |
Byrn | 2:e479b0296757 | 146 | _send_command(mode & 0x3); |
Byrn | 2:e479b0296757 | 147 | } |
Byrn | 2:e479b0296757 | 148 | |
Byrn | 2:e479b0296757 | 149 | void SSD1306::hv_set_column_address(unsigned char start, unsigned char end) |
Byrn | 2:e479b0296757 | 150 | { |
Byrn | 2:e479b0296757 | 151 | _send_command(0x21); |
Byrn | 2:e479b0296757 | 152 | _send_command(start & 0x7F); |
Byrn | 2:e479b0296757 | 153 | _send_command(end & 0x7F); |
Byrn | 2:e479b0296757 | 154 | } |
Byrn | 2:e479b0296757 | 155 | |
Byrn | 2:e479b0296757 | 156 | void SSD1306::hv_set_page_address(unsigned char start, unsigned char end) |
Byrn | 2:e479b0296757 | 157 | { |
Byrn | 2:e479b0296757 | 158 | _send_command(0x22); |
Byrn | 2:e479b0296757 | 159 | _send_command(start & 0x07); |
Byrn | 2:e479b0296757 | 160 | _send_command(end & 0x07); |
Byrn | 2:e479b0296757 | 161 | } |
Byrn | 2:e479b0296757 | 162 | |
Byrn | 2:e479b0296757 | 163 | void SSD1306::pam_set_page_start(unsigned char address) |
Byrn | 2:e479b0296757 | 164 | { |
Byrn | 2:e479b0296757 | 165 | _send_command(0xB0 | (address & 0x07)); |
Byrn | 2:e479b0296757 | 166 | } |
Byrn | 2:e479b0296757 | 167 | |
Byrn | 2:e479b0296757 | 168 | void SSD1306::set_display_clock_ratio_and_frequency(unsigned char ratio, unsigned char frequency) |
Byrn | 2:e479b0296757 | 169 | { |
Byrn | 2:e479b0296757 | 170 | _send_command(0xD5); |
Byrn | 2:e479b0296757 | 171 | _send_command((ratio & 0x0F) | ((frequency & 0x0F) << 4)); |
Byrn | 2:e479b0296757 | 172 | } |
Byrn | 2:e479b0296757 | 173 | |
Byrn | 2:e479b0296757 | 174 | void SSD1306::set_precharge_period(unsigned char phase1, unsigned char phase2) |
Byrn | 2:e479b0296757 | 175 | { |
Byrn | 2:e479b0296757 | 176 | _send_command(0xD9); |
Byrn | 2:e479b0296757 | 177 | _send_command((phase1 & 0x0F) | ((phase2 & 0x0F ) << 4)); |
Byrn | 2:e479b0296757 | 178 | } |
Byrn | 2:e479b0296757 | 179 | |
Byrn | 2:e479b0296757 | 180 | void SSD1306::set_vcomh_deselect_level(unsigned char level) |
Byrn | 2:e479b0296757 | 181 | { |
Byrn | 2:e479b0296757 | 182 | _send_command(0xDB); |
Byrn | 2:e479b0296757 | 183 | _send_command((level & 0x03) << 4); |
Byrn | 2:e479b0296757 | 184 | } |
Byrn | 2:e479b0296757 | 185 | |
Byrn | 2:e479b0296757 | 186 | void SSD1306::nop() |
Byrn | 2:e479b0296757 | 187 | { |
Byrn | 2:e479b0296757 | 188 | _send_command(0xE3); |
Byrn | 2:e479b0296757 | 189 | } |
Byrn | 2:e479b0296757 | 190 | |
Byrn | 2:e479b0296757 | 191 | void SSD1306::set_charge_pump_enable(unsigned char enable) |
Byrn | 2:e479b0296757 | 192 | { |
Byrn | 2:e479b0296757 | 193 | _send_command(0x8D); |
Byrn | 2:e479b0296757 | 194 | _send_command(enable ? 0x14 : 0x10); |
Byrn | 0:21cb91208386 | 195 | } |
Byrn | 0:21cb91208386 | 196 | |
Byrn | 0:21cb91208386 | 197 | void SSD1306::initialise() |
Byrn | 0:21cb91208386 | 198 | { |
Byrn | 1:1d58d378221c | 199 | // Init |
Byrn | 0:21cb91208386 | 200 | _reset = 1; |
Byrn | 0:21cb91208386 | 201 | wait(0.01); |
Byrn | 0:21cb91208386 | 202 | _reset = 0; |
Byrn | 0:21cb91208386 | 203 | wait(0.10); |
Byrn | 0:21cb91208386 | 204 | _reset = 1; |
Byrn | 0:21cb91208386 | 205 | |
Byrn | 0:21cb91208386 | 206 | off(); |
Byrn | 2:e479b0296757 | 207 | |
Byrn | 2:e479b0296757 | 208 | set_display_clock_ratio_and_frequency(0, 8); |
Byrn | 2:e479b0296757 | 209 | set_multiplex_ratio(0x3F); // 1/64 duty |
Byrn | 2:e479b0296757 | 210 | set_precharge_period(0xF, 0x01); |
Byrn | 2:e479b0296757 | 211 | set_display_offset(0); |
Byrn | 2:e479b0296757 | 212 | set_display_start_line(0); |
Byrn | 2:e479b0296757 | 213 | set_charge_pump_enable(1); |
Byrn | 2:e479b0296757 | 214 | set_memory_addressing_mode(0); // horizontal addressing mode |
Byrn | 2:e479b0296757 | 215 | set_segment_remap(1); |
Byrn | 2:e479b0296757 | 216 | set_com_output_scan_direction(1); |
Byrn | 2:e479b0296757 | 217 | set_com_pins_hardware_configuration(1, 0); |
Byrn | 1:1d58d378221c | 218 | set_contrast(0xFF); |
Byrn | 2:e479b0296757 | 219 | set_vcomh_deselect_level(1); |
Byrn | 1:1d58d378221c | 220 | |
Byrn | 2:e479b0296757 | 221 | wake(); |
Byrn | 2:e479b0296757 | 222 | set_inverse(0); |
Byrn | 0:21cb91208386 | 223 | |
Byrn | 2:e479b0296757 | 224 | hv_set_column_address(0, 127); |
Byrn | 2:e479b0296757 | 225 | hv_set_page_address(0, 7); |
Byrn | 0:21cb91208386 | 226 | |
Byrn | 2:e479b0296757 | 227 | pam_set_start_address(0); |
Byrn | 2:e479b0296757 | 228 | pam_set_page_start(0); |
Byrn | 2:e479b0296757 | 229 | |
Byrn | 2:e479b0296757 | 230 | // set_precharge_period(2, 2); |
Byrn | 0:21cb91208386 | 231 | } |
Byrn | 0:21cb91208386 | 232 | |
Byrn | 0:21cb91208386 | 233 | void SSD1306::update() |
Byrn | 0:21cb91208386 | 234 | { |
Byrn | 2:e479b0296757 | 235 | hv_set_column_address(0, 127); |
Byrn | 2:e479b0296757 | 236 | hv_set_page_address(0, 7); |
Byrn | 0:21cb91208386 | 237 | |
Byrn | 0:21cb91208386 | 238 | for (int i = 0; i < 1024; i++) |
Byrn | 0:21cb91208386 | 239 | _send_data(_screen[i]); |
Byrn | 0:21cb91208386 | 240 | } |
Byrn | 0:21cb91208386 | 241 | |
Byrn | 0:21cb91208386 | 242 | void SSD1306::set_pixel(int x, int y) |
Byrn | 0:21cb91208386 | 243 | { |
Byrn | 0:21cb91208386 | 244 | if (x >= SSD1306_LCDWIDTH || y >= SSD1306_LCDHEIGHT) return; |
Byrn | 0:21cb91208386 | 245 | |
Byrn | 0:21cb91208386 | 246 | _screen[x + (y / 8) * 128] |= 1 << (y % 8); |
Byrn | 0:21cb91208386 | 247 | } |
Byrn | 0:21cb91208386 | 248 | |
Byrn | 0:21cb91208386 | 249 | void SSD1306::clear_pixel(int x, int y) |
Byrn | 0:21cb91208386 | 250 | { |
Byrn | 0:21cb91208386 | 251 | if (x >= SSD1306_LCDWIDTH || y >= SSD1306_LCDHEIGHT) return; |
Byrn | 0:21cb91208386 | 252 | |
Byrn | 0:21cb91208386 | 253 | _screen[x + (y / 8) * 128] &= ~(1 << (y % 8)); |
Byrn | 0:21cb91208386 | 254 | } |
Byrn | 0:21cb91208386 | 255 | |
Byrn | 0:21cb91208386 | 256 | void SSD1306::line(int x0, int y0, int x1, int y1) { |
Byrn | 0:21cb91208386 | 257 | int steep = abs(y1 - y0) > abs(x1 - x0); |
Byrn | 0:21cb91208386 | 258 | int t; |
Byrn | 0:21cb91208386 | 259 | |
Byrn | 0:21cb91208386 | 260 | if (steep) { |
Byrn | 0:21cb91208386 | 261 | t = x0; x0 = y0; y0 = t; |
Byrn | 0:21cb91208386 | 262 | t = x1; x1 = y1; y1 = t; |
Byrn | 0:21cb91208386 | 263 | } |
Byrn | 0:21cb91208386 | 264 | |
Byrn | 0:21cb91208386 | 265 | if (x0 > x1) { |
Byrn | 0:21cb91208386 | 266 | t = x0; x0 = x1; x1 = t; |
Byrn | 0:21cb91208386 | 267 | t = y0; y0 = y1; y1 = t; |
Byrn | 0:21cb91208386 | 268 | } |
Byrn | 0:21cb91208386 | 269 | |
Byrn | 0:21cb91208386 | 270 | int dx, dy; |
Byrn | 0:21cb91208386 | 271 | |
Byrn | 0:21cb91208386 | 272 | dx = x1 - x0; |
Byrn | 0:21cb91208386 | 273 | dy = abs(y1 - y0); |
Byrn | 0:21cb91208386 | 274 | |
Byrn | 0:21cb91208386 | 275 | int err = dx / 2; |
Byrn | 0:21cb91208386 | 276 | int ystep; |
Byrn | 0:21cb91208386 | 277 | |
Byrn | 0:21cb91208386 | 278 | if (y0 < y1) { |
Byrn | 0:21cb91208386 | 279 | ystep = 1; |
Byrn | 0:21cb91208386 | 280 | } else { |
Byrn | 0:21cb91208386 | 281 | ystep = -1;} |
Byrn | 0:21cb91208386 | 282 | |
Byrn | 0:21cb91208386 | 283 | for (; x0<x1; x0++) { |
Byrn | 0:21cb91208386 | 284 | if (steep) { |
Byrn | 0:21cb91208386 | 285 | set_pixel(y0, x0); |
Byrn | 0:21cb91208386 | 286 | } else { |
Byrn | 0:21cb91208386 | 287 | set_pixel(x0, y0); |
Byrn | 0:21cb91208386 | 288 | } |
Byrn | 0:21cb91208386 | 289 | err -= dy; |
Byrn | 0:21cb91208386 | 290 | if (err < 0) { |
Byrn | 0:21cb91208386 | 291 | y0 += ystep; |
Byrn | 0:21cb91208386 | 292 | err += dx; |
Byrn | 0:21cb91208386 | 293 | } |
Byrn | 0:21cb91208386 | 294 | } |
Byrn | 0:21cb91208386 | 295 | } |
Byrn | 0:21cb91208386 | 296 | |
Byrn | 0:21cb91208386 | 297 | void SSD1306::draw_string(char *font, int x, int y, const char *string) |
Byrn | 0:21cb91208386 | 298 | { |
Byrn | 0:21cb91208386 | 299 | _cursor_x = x; |
Byrn | 0:21cb91208386 | 300 | _cursor_y = y; |
Byrn | 0:21cb91208386 | 301 | |
Byrn | 0:21cb91208386 | 302 | for (int i = 0; i < strlen(string); i++) |
Byrn | 0:21cb91208386 | 303 | draw_char(font, _cursor_x, _cursor_y, string[i]); |
Byrn | 0:21cb91208386 | 304 | } |
Byrn | 0:21cb91208386 | 305 | |
Byrn | 0:21cb91208386 | 306 | void SSD1306::draw_char(char *font, int x, int y, char c) |
Byrn | 0:21cb91208386 | 307 | { |
Byrn | 0:21cb91208386 | 308 | int height = font[FONT_HEIGHT_OFFSET]; |
Byrn | 0:21cb91208386 | 309 | int max_width = font[FONT_SIZE_OFFSET]; |
Byrn | 0:21cb91208386 | 310 | int char_size_bytes = max_width * height + 1; |
Byrn | 0:21cb91208386 | 311 | int char_width = font[(c - FONT_START) * char_size_bytes + FONT_DATA_OFFSET]; |
Byrn | 0:21cb91208386 | 312 | for (int i = 0; i < char_width; i++) |
Byrn | 0:21cb91208386 | 313 | _screen[(x + i) + (y * SSD1306_LCDWIDTH)] = font[(c - FONT_START) * (char_size_bytes) + i + FONT_DATA_OFFSET + 1]; |
Byrn | 0:21cb91208386 | 314 | |
Byrn | 0:21cb91208386 | 315 | _cursor_x = x + char_width; |
Byrn | 0:21cb91208386 | 316 | _cursor_y = y; |
Byrn | 0:21cb91208386 | 317 | } |
Byrn | 0:21cb91208386 | 318 | |
Byrn | 0:21cb91208386 | 319 | void SSD1306::clear() |
Byrn | 0:21cb91208386 | 320 | { |
Byrn | 0:21cb91208386 | 321 | for (int i = 0; i < 1024; i++) |
Byrn | 0:21cb91208386 | 322 | _screen[i] = 0; |
Byrn | 0:21cb91208386 | 323 | } |
Byrn | 0:21cb91208386 | 324 | |
Byrn | 1:1d58d378221c | 325 | void SSD1306::_send_command(unsigned char code) |
Byrn | 0:21cb91208386 | 326 | { |
Byrn | 0:21cb91208386 | 327 | _cs = 1; |
Byrn | 0:21cb91208386 | 328 | _dc = 0; |
Byrn | 0:21cb91208386 | 329 | _cs = 0; |
Byrn | 0:21cb91208386 | 330 | _spi.write(code); |
Byrn | 0:21cb91208386 | 331 | _cs = 1; |
Byrn | 0:21cb91208386 | 332 | } |
Byrn | 0:21cb91208386 | 333 | |
Byrn | 1:1d58d378221c | 334 | void SSD1306::_send_data(unsigned char value) |
Byrn | 0:21cb91208386 | 335 | { |
Byrn | 0:21cb91208386 | 336 | _cs = 1; |
Byrn | 0:21cb91208386 | 337 | _dc = 1; |
Byrn | 0:21cb91208386 | 338 | _cs = 0; |
Byrn | 0:21cb91208386 | 339 | _spi.write(value); |
Byrn | 0:21cb91208386 | 340 | _cs = 1; |
Byrn | 0:21cb91208386 | 341 | } |