| 1 | /* |
| 2 | |
| 3 | u8x8_d_max7219.c |
| 4 | |
| 5 | Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/) |
| 6 | |
| 7 | Copyright (c) 2017, olikraus@gmail.com |
| 8 | All rights reserved. |
| 9 | |
| 10 | Redistribution and use in source and binary forms, with or without modification, |
| 11 | are permitted provided that the following conditions are met: |
| 12 | |
| 13 | * Redistributions of source code must retain the above copyright notice, this list |
| 14 | of conditions and the following disclaimer. |
| 15 | |
| 16 | * Redistributions in binary form must reproduce the above copyright notice, this |
| 17 | list of conditions and the following disclaimer in the documentation and/or other |
| 18 | materials provided with the distribution. |
| 19 | |
| 20 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| 21 | CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| 22 | INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 24 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
| 25 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 26 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 27 | NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 28 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| 29 | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 30 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 31 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 32 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 33 | |
| 34 | */ |
| 35 | |
| 36 | |
| 37 | #include "u8x8.h" |
| 38 | |
| 39 | |
| 40 | |
| 41 | static const uint8_t u8x8_d_max7219_init_seq[] = { |
| 42 | |
| 43 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 44 | U8X8_CA(15, 0), /* test mode off */ |
| 45 | U8X8_CA(15, 0), /* test mode off */ |
| 46 | U8X8_CA(15, 0), /* test mode off */ |
| 47 | U8X8_CA(15, 0), /* test mode off */ |
| 48 | U8X8_END_TRANSFER(), /* disable chip */ |
| 49 | |
| 50 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 51 | U8X8_CA(12, 0), /* */ |
| 52 | U8X8_CA(12, 0), /* */ |
| 53 | U8X8_CA(12, 0), /* */ |
| 54 | U8X8_CA(12, 0), /* */ |
| 55 | U8X8_END_TRANSFER(), /* disable chip */ |
| 56 | |
| 57 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 58 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 59 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 60 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 61 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 62 | U8X8_END_TRANSFER(), /* disable chip */ |
| 63 | |
| 64 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 65 | U8X8_CA(10, 10), /* medium high intensity */ |
| 66 | U8X8_CA(10, 10), /* medium high intensity */ |
| 67 | U8X8_CA(10, 10), /* medium high intensity */ |
| 68 | U8X8_CA(10, 10), /* medium high intensity */ |
| 69 | U8X8_END_TRANSFER(), /* disable chip */ |
| 70 | |
| 71 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 72 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 73 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 74 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 75 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 76 | U8X8_END_TRANSFER(), /* disable chip */ |
| 77 | |
| 78 | |
| 79 | //U8X8_CA(12, 0), /* shutdown */ |
| 80 | |
| 81 | //U8X8_END_TRANSFER(), /* disable chip */ |
| 82 | U8X8_END() /* end of sequence */ |
| 83 | }; |
| 84 | |
| 85 | static const uint8_t u8x8_d_max7219_powersave0_seq[] = { |
| 86 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 87 | U8X8_CA(12, 1), /* display on */ |
| 88 | U8X8_CA(12, 1), /* display on */ |
| 89 | U8X8_CA(12, 1), /* display on */ |
| 90 | U8X8_CA(12, 1), /* display on */ |
| 91 | U8X8_END_TRANSFER(), /* disable chip */ |
| 92 | U8X8_END() /* end of sequence */ |
| 93 | }; |
| 94 | |
| 95 | static const uint8_t u8x8_d_max7219_powersave1_seq[] = { |
| 96 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 97 | U8X8_CA(12, 0), /* shutdown */ |
| 98 | U8X8_CA(12, 0), /* shutdown */ |
| 99 | U8X8_CA(12, 0), /* shutdown */ |
| 100 | U8X8_CA(12, 0), /* shutdown */ |
| 101 | U8X8_END_TRANSFER(), /* disable chip */ |
| 102 | U8X8_END() /* end of sequence */ |
| 103 | }; |
| 104 | |
| 105 | |
| 106 | static uint8_t u8x8_d_max7219_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) |
| 107 | { |
| 108 | uint8_t c, j, i; |
| 109 | uint8_t *ptr; |
| 110 | switch(msg) |
| 111 | { |
| 112 | /* handled by the calling function |
| 113 | case U8X8_MSG_DISPLAY_SETUP_MEMORY: |
| 114 | u8x8_d_helper_display_setup_memory(u8x8, &u8x8_pcf8812_96x65_display_info); |
| 115 | break; |
| 116 | case U8X8_MSG_DISPLAY_INIT: |
| 117 | u8x8_d_helper_display_init(u8x8); |
| 118 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_init_seq); |
| 119 | break; |
| 120 | case U8X8_MSG_DISPLAY_SET_POWER_SAVE: |
| 121 | if ( arg_int == 0 ) |
| 122 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave0_seq); |
| 123 | else |
| 124 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave1_seq); |
| 125 | break; |
| 126 | */ |
| 127 | /* not supported by MAX7219 |
| 128 | case U8X8_MSG_DISPLAY_SET_FLIP_MODE: |
| 129 | break; |
| 130 | */ |
| 131 | #ifdef U8X8_WITH_SET_CONTRAST |
| 132 | case U8X8_MSG_DISPLAY_SET_CONTRAST: |
| 133 | u8x8_cad_StartTransfer(u8x8); |
| 134 | for( i = 0; i < u8x8->display_info->tile_width; i++ ) |
| 135 | { |
| 136 | u8x8_cad_SendCmd(u8x8, 10 ); /* brightness */ |
| 137 | u8x8_cad_SendArg(u8x8, (arg_int>>4) ); /* 0..15 for contrast */ |
| 138 | } |
| 139 | u8x8_cad_EndTransfer(u8x8); |
| 140 | break; |
| 141 | #endif |
| 142 | case U8X8_MSG_DISPLAY_DRAW_TILE: |
| 143 | /* transfer always has to start at x pos 0 (u8x8 is not supported) */ |
| 144 | /* also y pos has to be 0 */ |
| 145 | /* arg_int is ignored */ |
| 146 | //x = ((u8x8_tile_t *)arg_ptr)->x_pos; |
| 147 | |
| 148 | c = ((u8x8_tile_t *)arg_ptr)->cnt; /* number of tiles */ |
| 149 | ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr; /* data ptr to the tiles */ |
| 150 | for( i = 0; i < 8; i++ ) |
| 151 | { |
| 152 | u8x8_cad_StartTransfer(u8x8); |
| 153 | for( j = 0; j < c; j++ ) |
| 154 | { |
| 155 | u8x8_cad_SendCmd(u8x8, i+1); /* commands 1..8 select the byte */ |
| 156 | u8x8_cad_SendArg(u8x8, *ptr ); |
| 157 | ptr++; |
| 158 | } |
| 159 | u8x8_cad_EndTransfer(u8x8); |
| 160 | } |
| 161 | |
| 162 | break; |
| 163 | default: |
| 164 | return 0; |
| 165 | } |
| 166 | return 1; |
| 167 | } |
| 168 | |
| 169 | /*==============================*/ |
| 170 | |
| 171 | static const u8x8_display_info_t u8x8_max7219_32x8_display_info = |
| 172 | { |
| 173 | /* chip_enable_level = */ 0, |
| 174 | /* chip_disable_level = */ 1, |
| 175 | |
| 176 | /* post_chip_enable_wait_ns = */ 100, |
| 177 | /* pre_chip_disable_wait_ns = */ 100, |
| 178 | /* reset_pulse_width_ms = */ 100, |
| 179 | /* post_reset_wait_ms = */ 100, |
| 180 | /* sda_setup_time_ns = */ 100, |
| 181 | /* sck_pulse_width_ns = */ 100, |
| 182 | /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ |
| 183 | /* spi_mode = */ 0, /* active high, rising edge */ |
| 184 | /* i2c_bus_clock_100kHz = */ 4, |
| 185 | /* data_setup_time_ns = */ 40, |
| 186 | /* write_pulse_width_ns = */ 150, |
| 187 | /* tile_width = */ 4, |
| 188 | /* tile_height = */ 1, |
| 189 | /* default_x_offset = */ 0, |
| 190 | /* flipmode_x_offset = */ 0, |
| 191 | /* pixel_width = */ 32, |
| 192 | /* pixel_height = */ 8 |
| 193 | }; |
| 194 | |
| 195 | uint8_t u8x8_d_max7219_32x8(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) |
| 196 | { |
| 197 | switch(msg) |
| 198 | { |
| 199 | case U8X8_MSG_DISPLAY_SETUP_MEMORY : |
| 200 | u8x8_d_helper_display_setup_memory(u8x8, &u8x8_max7219_32x8_display_info); |
| 201 | return 1; |
| 202 | case U8X8_MSG_DISPLAY_INIT: |
| 203 | u8x8_d_helper_display_init(u8x8); |
| 204 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_init_seq); |
| 205 | return 1; |
| 206 | case U8X8_MSG_DISPLAY_SET_POWER_SAVE: |
| 207 | if ( arg_int == 0 ) |
| 208 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave0_seq); |
| 209 | else |
| 210 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave1_seq); |
| 211 | return 1; |
| 212 | } |
| 213 | return u8x8_d_max7219_generic(u8x8, msg, arg_int, arg_ptr); |
| 214 | } |
| 215 | |
| 216 | /*==============================*/ |
| 217 | |
| 218 | static const u8x8_display_info_t u8x8_max7219_16x16_display_info = |
| 219 | { |
| 220 | /* chip_enable_level = */ 0, |
| 221 | /* chip_disable_level = */ 1, |
| 222 | |
| 223 | /* post_chip_enable_wait_ns = */ 100, |
| 224 | /* pre_chip_disable_wait_ns = */ 100, |
| 225 | /* reset_pulse_width_ms = */ 100, |
| 226 | /* post_reset_wait_ms = */ 100, |
| 227 | /* sda_setup_time_ns = */ 100, |
| 228 | /* sck_pulse_width_ns = */ 100, |
| 229 | /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ |
| 230 | /* spi_mode = */ 0, /* active high, rising edge */ |
| 231 | /* i2c_bus_clock_100kHz = */ 4, |
| 232 | /* data_setup_time_ns = */ 40, |
| 233 | /* write_pulse_width_ns = */ 150, |
| 234 | /* tile_width = */ 2, |
| 235 | /* tile_height = */ 2, |
| 236 | /* default_x_offset = */ 0, |
| 237 | /* flipmode_x_offset = */ 0, |
| 238 | /* pixel_width = */ 16, |
| 239 | /* pixel_height = */ 16 |
| 240 | }; |
| 241 | |
| 242 | /* |
| 243 | Multiple page rows are not supported, so 16x16 will not work. |
| 244 | Due to the hardware structure of such displays all tiles of the display |
| 245 | must be written at once. |
| 246 | This is not possible with the current u8g2 structure. |
| 247 | So u8x8_d_max7219_16x16 will not work. |
| 248 | */ |
| 249 | |
| 250 | uint8_t u8x8_d_max7219_16x16(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) |
| 251 | { |
| 252 | switch(msg) |
| 253 | { |
| 254 | case U8X8_MSG_DISPLAY_SETUP_MEMORY : |
| 255 | u8x8_d_helper_display_setup_memory(u8x8, &u8x8_max7219_16x16_display_info); |
| 256 | return 1; |
| 257 | case U8X8_MSG_DISPLAY_INIT: |
| 258 | u8x8_d_helper_display_init(u8x8); |
| 259 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_init_seq); |
| 260 | return 1; |
| 261 | case U8X8_MSG_DISPLAY_SET_POWER_SAVE: |
| 262 | if ( arg_int == 0 ) |
| 263 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave0_seq); |
| 264 | else |
| 265 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave1_seq); |
| 266 | return 1; |
| 267 | } |
| 268 | return u8x8_d_max7219_generic(u8x8, msg, arg_int, arg_ptr); |
| 269 | } |
| 270 | |
| 271 | /*==============================*/ |
| 272 | |
| 273 | static const u8x8_display_info_t u8x8_max7219_8x8_display_info = |
| 274 | { |
| 275 | /* chip_enable_level = */ 0, |
| 276 | /* chip_disable_level = */ 1, |
| 277 | |
| 278 | /* post_chip_enable_wait_ns = */ 100, |
| 279 | /* pre_chip_disable_wait_ns = */ 100, |
| 280 | /* reset_pulse_width_ms = */ 100, |
| 281 | /* post_reset_wait_ms = */ 100, |
| 282 | /* sda_setup_time_ns = */ 100, |
| 283 | /* sck_pulse_width_ns = */ 100, |
| 284 | /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ |
| 285 | /* spi_mode = */ 0, /* active high, rising edge */ |
| 286 | /* i2c_bus_clock_100kHz = */ 4, |
| 287 | /* data_setup_time_ns = */ 40, |
| 288 | /* write_pulse_width_ns = */ 150, |
| 289 | /* tile_width = */ 1, |
| 290 | /* tile_height = */ 1, |
| 291 | /* default_x_offset = */ 0, |
| 292 | /* flipmode_x_offset = */ 0, |
| 293 | /* pixel_width = */ 8, |
| 294 | /* pixel_height = */ 8 |
| 295 | }; |
| 296 | |
| 297 | uint8_t u8x8_d_max7219_8x8(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) |
| 298 | { |
| 299 | switch(msg) |
| 300 | { |
| 301 | case U8X8_MSG_DISPLAY_SETUP_MEMORY : |
| 302 | u8x8_d_helper_display_setup_memory(u8x8, &u8x8_max7219_8x8_display_info); |
| 303 | return 1; |
| 304 | case U8X8_MSG_DISPLAY_INIT: |
| 305 | u8x8_d_helper_display_init(u8x8); |
| 306 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_init_seq); |
| 307 | return 1; |
| 308 | case U8X8_MSG_DISPLAY_SET_POWER_SAVE: |
| 309 | if ( arg_int == 0 ) |
| 310 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave0_seq); |
| 311 | else |
| 312 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave1_seq); |
| 313 | return 1; |
| 314 | } |
| 315 | return u8x8_d_max7219_generic(u8x8, msg, arg_int, arg_ptr); |
| 316 | } |
| 317 | |
| 318 | |
| 319 | /*==============================*/ |
| 320 | |
| 321 | static const uint8_t u8x8_d_max7219_8_init_seq[] = { |
| 322 | |
| 323 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 324 | U8X8_CA(15, 0), /* test mode off */ |
| 325 | U8X8_CA(15, 0), /* test mode off */ |
| 326 | U8X8_CA(15, 0), /* test mode off */ |
| 327 | U8X8_CA(15, 0), /* test mode off */ |
| 328 | U8X8_CA(15, 0), /* test mode off */ |
| 329 | U8X8_CA(15, 0), /* test mode off */ |
| 330 | U8X8_CA(15, 0), /* test mode off */ |
| 331 | U8X8_CA(15, 0), /* test mode off */ |
| 332 | U8X8_END_TRANSFER(), /* disable chip */ |
| 333 | |
| 334 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 335 | U8X8_CA(12, 0), /* */ |
| 336 | U8X8_CA(12, 0), /* */ |
| 337 | U8X8_CA(12, 0), /* */ |
| 338 | U8X8_CA(12, 0), /* */ |
| 339 | U8X8_CA(12, 0), /* */ |
| 340 | U8X8_CA(12, 0), /* */ |
| 341 | U8X8_CA(12, 0), /* */ |
| 342 | U8X8_CA(12, 0), /* */ |
| 343 | U8X8_END_TRANSFER(), /* disable chip */ |
| 344 | |
| 345 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 346 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 347 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 348 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 349 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 350 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 351 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 352 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 353 | U8X8_CA(9, 0), /* decode mode: graphics */ |
| 354 | U8X8_END_TRANSFER(), /* disable chip */ |
| 355 | |
| 356 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 357 | U8X8_CA(10, 10), /* medium high intensity */ |
| 358 | U8X8_CA(10, 10), /* medium high intensity */ |
| 359 | U8X8_CA(10, 10), /* medium high intensity */ |
| 360 | U8X8_CA(10, 10), /* medium high intensity */ |
| 361 | U8X8_CA(10, 10), /* medium high intensity */ |
| 362 | U8X8_CA(10, 10), /* medium high intensity */ |
| 363 | U8X8_CA(10, 10), /* medium high intensity */ |
| 364 | U8X8_CA(10, 10), /* medium high intensity */ |
| 365 | U8X8_END_TRANSFER(), /* disable chip */ |
| 366 | |
| 367 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 368 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 369 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 370 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 371 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 372 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 373 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 374 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 375 | U8X8_CA(11, 7), /* scan limit: display all digits (assuming a 8x8 matrix) */ |
| 376 | U8X8_END_TRANSFER(), /* disable chip */ |
| 377 | |
| 378 | |
| 379 | //U8X8_CA(12, 0), /* shutdown */ |
| 380 | |
| 381 | //U8X8_END_TRANSFER(), /* disable chip */ |
| 382 | U8X8_END() /* end of sequence */ |
| 383 | }; |
| 384 | |
| 385 | static const uint8_t u8x8_d_max7219_8_powersave0_seq[] = { |
| 386 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 387 | U8X8_CA(12, 1), /* display on */ |
| 388 | U8X8_CA(12, 1), /* display on */ |
| 389 | U8X8_CA(12, 1), /* display on */ |
| 390 | U8X8_CA(12, 1), /* display on */ |
| 391 | U8X8_CA(12, 1), /* display on */ |
| 392 | U8X8_CA(12, 1), /* display on */ |
| 393 | U8X8_CA(12, 1), /* display on */ |
| 394 | U8X8_CA(12, 1), /* display on */ |
| 395 | U8X8_END_TRANSFER(), /* disable chip */ |
| 396 | U8X8_END() /* end of sequence */ |
| 397 | }; |
| 398 | |
| 399 | static const uint8_t u8x8_d_max7219_8_powersave1_seq[] = { |
| 400 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
| 401 | U8X8_CA(12, 0), /* shutdown */ |
| 402 | U8X8_CA(12, 0), /* shutdown */ |
| 403 | U8X8_CA(12, 0), /* shutdown */ |
| 404 | U8X8_CA(12, 0), /* shutdown */ |
| 405 | U8X8_CA(12, 0), /* shutdown */ |
| 406 | U8X8_CA(12, 0), /* shutdown */ |
| 407 | U8X8_CA(12, 0), /* shutdown */ |
| 408 | U8X8_CA(12, 0), /* shutdown */ |
| 409 | U8X8_END_TRANSFER(), /* disable chip */ |
| 410 | U8X8_END() /* end of sequence */ |
| 411 | }; |
| 412 | |
| 413 | |
| 414 | static const u8x8_display_info_t u8x8_max7219_64x8_display_info = |
| 415 | { |
| 416 | /* chip_enable_level = */ 0, |
| 417 | /* chip_disable_level = */ 1, |
| 418 | |
| 419 | /* post_chip_enable_wait_ns = */ 100, |
| 420 | /* pre_chip_disable_wait_ns = */ 100, |
| 421 | /* reset_pulse_width_ms = */ 100, |
| 422 | /* post_reset_wait_ms = */ 100, |
| 423 | /* sda_setup_time_ns = */ 100, |
| 424 | /* sck_pulse_width_ns = */ 100, |
| 425 | /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ |
| 426 | /* spi_mode = */ 0, /* active high, rising edge */ |
| 427 | /* i2c_bus_clock_100kHz = */ 4, |
| 428 | /* data_setup_time_ns = */ 40, |
| 429 | /* write_pulse_width_ns = */ 150, |
| 430 | /* tile_width = */ 8, |
| 431 | /* tile_height = */ 1, |
| 432 | /* default_x_offset = */ 0, |
| 433 | /* flipmode_x_offset = */ 0, |
| 434 | /* pixel_width = */ 64, |
| 435 | /* pixel_height = */ 8 |
| 436 | }; |
| 437 | |
| 438 | uint8_t u8x8_d_max7219_64x8(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) |
| 439 | { |
| 440 | switch(msg) |
| 441 | { |
| 442 | case U8X8_MSG_DISPLAY_SETUP_MEMORY : |
| 443 | u8x8_d_helper_display_setup_memory(u8x8, &u8x8_max7219_64x8_display_info); |
| 444 | return 1; |
| 445 | case U8X8_MSG_DISPLAY_INIT: |
| 446 | u8x8_d_helper_display_init(u8x8); |
| 447 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_8_init_seq); |
| 448 | return 1; |
| 449 | case U8X8_MSG_DISPLAY_SET_POWER_SAVE: |
| 450 | if ( arg_int == 0 ) |
| 451 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_8_powersave0_seq); |
| 452 | else |
| 453 | u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_8_powersave1_seq); |
| 454 | return 1; |
| 455 | } |
| 456 | return u8x8_d_max7219_generic(u8x8, msg, arg_int, arg_ptr); |
| 457 | } |
| 458 | |
| 459 | |