change for GEII project NICE (invert cs)
max7219.cpp@0:798fb343e022, 2016-01-12 (annotated)
- Committer:
- j3
- Date:
- Tue Jan 12 23:40:36 2016 +0000
- Revision:
- 0:798fb343e022
- Child:
- 1:90a7cf4e7d26
Initial commit, still need to add comments
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
j3 | 0:798fb343e022 | 1 | /******************************************************************//** |
j3 | 0:798fb343e022 | 2 | * @file max7219.cpp |
j3 | 0:798fb343e022 | 3 | * |
j3 | 0:798fb343e022 | 4 | * @author Justin Jordan |
j3 | 0:798fb343e022 | 5 | * |
j3 | 0:798fb343e022 | 6 | * @version 0.0 |
j3 | 0:798fb343e022 | 7 | * |
j3 | 0:798fb343e022 | 8 | * Started: 08JAN16 |
j3 | 0:798fb343e022 | 9 | * |
j3 | 0:798fb343e022 | 10 | * Updated: |
j3 | 0:798fb343e022 | 11 | * |
j3 | 0:798fb343e022 | 12 | * @brief Source file for Max7219 class |
j3 | 0:798fb343e022 | 13 | *********************************************************************** |
j3 | 0:798fb343e022 | 14 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
j3 | 0:798fb343e022 | 15 | * |
j3 | 0:798fb343e022 | 16 | * Permission is hereby granted, free of charge, to any person obtaining a |
j3 | 0:798fb343e022 | 17 | * copy of this software and associated documentation files (the "Software"), |
j3 | 0:798fb343e022 | 18 | * to deal in the Software without restriction, including without limitation |
j3 | 0:798fb343e022 | 19 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
j3 | 0:798fb343e022 | 20 | * and/or sell copies of the Software, and to permit persons to whom the |
j3 | 0:798fb343e022 | 21 | * Software is furnished to do so, subject to the following conditions: |
j3 | 0:798fb343e022 | 22 | * |
j3 | 0:798fb343e022 | 23 | * The above copyright notice and this permission notice shall be included |
j3 | 0:798fb343e022 | 24 | * in all copies or substantial portions of the Software. |
j3 | 0:798fb343e022 | 25 | * |
j3 | 0:798fb343e022 | 26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
j3 | 0:798fb343e022 | 27 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
j3 | 0:798fb343e022 | 28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
j3 | 0:798fb343e022 | 29 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
j3 | 0:798fb343e022 | 30 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
j3 | 0:798fb343e022 | 31 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
j3 | 0:798fb343e022 | 32 | * OTHER DEALINGS IN THE SOFTWARE. |
j3 | 0:798fb343e022 | 33 | * |
j3 | 0:798fb343e022 | 34 | * Except as contained in this notice, the name of Maxim Integrated |
j3 | 0:798fb343e022 | 35 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
j3 | 0:798fb343e022 | 36 | * Products, Inc. Branding Policy. |
j3 | 0:798fb343e022 | 37 | * |
j3 | 0:798fb343e022 | 38 | * The mere transfer of this software does not imply any licenses |
j3 | 0:798fb343e022 | 39 | * of trade secrets, proprietary technology, copyrights, patents, |
j3 | 0:798fb343e022 | 40 | * trademarks, maskwork rights, or any other form of intellectual |
j3 | 0:798fb343e022 | 41 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
j3 | 0:798fb343e022 | 42 | * ownership rights. |
j3 | 0:798fb343e022 | 43 | **********************************************************************/ |
j3 | 0:798fb343e022 | 44 | |
j3 | 0:798fb343e022 | 45 | |
j3 | 0:798fb343e022 | 46 | #include "max7219.h" |
j3 | 0:798fb343e022 | 47 | |
j3 | 0:798fb343e022 | 48 | |
j3 | 0:798fb343e022 | 49 | //********************************************************************* |
j3 | 0:798fb343e022 | 50 | Max7219::Max7219(SPI *spi_bus, PinName cs): _p_spi(spi_bus) |
j3 | 0:798fb343e022 | 51 | { |
j3 | 0:798fb343e022 | 52 | _num_devices = 1; |
j3 | 0:798fb343e022 | 53 | |
j3 | 0:798fb343e022 | 54 | _p_cs = new DigitalOut(cs, 1); |
j3 | 0:798fb343e022 | 55 | _spi_owner = false; |
j3 | 0:798fb343e022 | 56 | } |
j3 | 0:798fb343e022 | 57 | |
j3 | 0:798fb343e022 | 58 | |
j3 | 0:798fb343e022 | 59 | //********************************************************************* |
j3 | 0:798fb343e022 | 60 | Max7219::Max7219(PinName mosi, PinName miso, PinName sclk, PinName cs) |
j3 | 0:798fb343e022 | 61 | { |
j3 | 0:798fb343e022 | 62 | _num_devices = 1; |
j3 | 0:798fb343e022 | 63 | |
j3 | 0:798fb343e022 | 64 | _p_spi = new SPI(mosi, miso, sclk); |
j3 | 0:798fb343e022 | 65 | _p_cs = new DigitalOut(cs, 1); |
j3 | 0:798fb343e022 | 66 | |
j3 | 0:798fb343e022 | 67 | _spi_owner = true; |
j3 | 0:798fb343e022 | 68 | } |
j3 | 0:798fb343e022 | 69 | |
j3 | 0:798fb343e022 | 70 | |
j3 | 0:798fb343e022 | 71 | //********************************************************************* |
j3 | 0:798fb343e022 | 72 | Max7219::~Max7219() |
j3 | 0:798fb343e022 | 73 | { |
j3 | 0:798fb343e022 | 74 | delete _p_cs; |
j3 | 0:798fb343e022 | 75 | |
j3 | 0:798fb343e022 | 76 | if(_spi_owner) |
j3 | 0:798fb343e022 | 77 | { |
j3 | 0:798fb343e022 | 78 | delete _p_spi; |
j3 | 0:798fb343e022 | 79 | } |
j3 | 0:798fb343e022 | 80 | } |
j3 | 0:798fb343e022 | 81 | |
j3 | 0:798fb343e022 | 82 | |
j3 | 0:798fb343e022 | 83 | //********************************************************************* |
j3 | 0:798fb343e022 | 84 | int32_t Max7219::set_num_devices(uint8_t num_devices) |
j3 | 0:798fb343e022 | 85 | { |
j3 | 0:798fb343e022 | 86 | int32_t rtn_val = -1; |
j3 | 0:798fb343e022 | 87 | |
j3 | 0:798fb343e022 | 88 | if(num_devices > 0) |
j3 | 0:798fb343e022 | 89 | { |
j3 | 0:798fb343e022 | 90 | _num_devices = num_devices; |
j3 | 0:798fb343e022 | 91 | rtn_val = _num_devices; |
j3 | 0:798fb343e022 | 92 | } |
j3 | 0:798fb343e022 | 93 | |
j3 | 0:798fb343e022 | 94 | return(rtn_val); |
j3 | 0:798fb343e022 | 95 | } |
j3 | 0:798fb343e022 | 96 | |
j3 | 0:798fb343e022 | 97 | |
j3 | 0:798fb343e022 | 98 | //********************************************************************* |
j3 | 0:798fb343e022 | 99 | void Max7219::set_display_test(void) |
j3 | 0:798fb343e022 | 100 | { |
j3 | 0:798fb343e022 | 101 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 102 | |
j3 | 0:798fb343e022 | 103 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 104 | for(idx = 0; idx < _num_devices; idx++) |
j3 | 0:798fb343e022 | 105 | { |
j3 | 0:798fb343e022 | 106 | _p_spi->write(MAX7219_DISPLAY_TEST); |
j3 | 0:798fb343e022 | 107 | _p_spi->write(1); |
j3 | 0:798fb343e022 | 108 | } |
j3 | 0:798fb343e022 | 109 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 110 | } |
j3 | 0:798fb343e022 | 111 | |
j3 | 0:798fb343e022 | 112 | |
j3 | 0:798fb343e022 | 113 | //********************************************************************* |
j3 | 0:798fb343e022 | 114 | void Max7219::clear_display_test(void) |
j3 | 0:798fb343e022 | 115 | { |
j3 | 0:798fb343e022 | 116 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 117 | |
j3 | 0:798fb343e022 | 118 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 119 | for(idx = 0; idx < _num_devices; idx++) |
j3 | 0:798fb343e022 | 120 | { |
j3 | 0:798fb343e022 | 121 | _p_spi->write(MAX7219_DISPLAY_TEST); |
j3 | 0:798fb343e022 | 122 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 123 | } |
j3 | 0:798fb343e022 | 124 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 125 | } |
j3 | 0:798fb343e022 | 126 | |
j3 | 0:798fb343e022 | 127 | |
j3 | 0:798fb343e022 | 128 | //********************************************************************* |
j3 | 0:798fb343e022 | 129 | int32_t Max7219::init_device(max7219_configuration_t config, uint8_t device_number) |
j3 | 0:798fb343e022 | 130 | { |
j3 | 0:798fb343e022 | 131 | int32_t rtn_val = -1; |
j3 | 0:798fb343e022 | 132 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 133 | |
j3 | 0:798fb343e022 | 134 | if(config.device_number > _num_devices) |
j3 | 0:798fb343e022 | 135 | { |
j3 | 0:798fb343e022 | 136 | rtn_val = -1; |
j3 | 0:798fb343e022 | 137 | } |
j3 | 0:798fb343e022 | 138 | else if(config.device_number == 0) |
j3 | 0:798fb343e022 | 139 | { |
j3 | 0:798fb343e022 | 140 | //device numbering starts with index 1 |
j3 | 0:798fb343e022 | 141 | rtn_val = -2; |
j3 | 0:798fb343e022 | 142 | } |
j3 | 0:798fb343e022 | 143 | else |
j3 | 0:798fb343e022 | 144 | { |
j3 | 0:798fb343e022 | 145 | //write DECODE_MODE register of device |
j3 | 0:798fb343e022 | 146 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 147 | for(idx = _num_devices; idx > 0; idx--) |
j3 | 0:798fb343e022 | 148 | { |
j3 | 0:798fb343e022 | 149 | if(config.device_number == idx) |
j3 | 0:798fb343e022 | 150 | { |
j3 | 0:798fb343e022 | 151 | _p_spi->write(MAX7219_DECODE_MODE); |
j3 | 0:798fb343e022 | 152 | _p_spi->write(config.decode_mode); |
j3 | 0:798fb343e022 | 153 | } |
j3 | 0:798fb343e022 | 154 | else |
j3 | 0:798fb343e022 | 155 | { |
j3 | 0:798fb343e022 | 156 | _p_spi->write(MAX7219_NO_OP); |
j3 | 0:798fb343e022 | 157 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 158 | } |
j3 | 0:798fb343e022 | 159 | } |
j3 | 0:798fb343e022 | 160 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 161 | |
j3 | 0:798fb343e022 | 162 | wait_us(1); |
j3 | 0:798fb343e022 | 163 | |
j3 | 0:798fb343e022 | 164 | //write INTENSITY register of device |
j3 | 0:798fb343e022 | 165 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 166 | for(idx = _num_devices; idx > 0; idx--) |
j3 | 0:798fb343e022 | 167 | { |
j3 | 0:798fb343e022 | 168 | if(config.device_number == idx) |
j3 | 0:798fb343e022 | 169 | { |
j3 | 0:798fb343e022 | 170 | _p_spi->write(MAX7219_INTENSITY); |
j3 | 0:798fb343e022 | 171 | _p_spi->write(config.intensity); |
j3 | 0:798fb343e022 | 172 | } |
j3 | 0:798fb343e022 | 173 | else |
j3 | 0:798fb343e022 | 174 | { |
j3 | 0:798fb343e022 | 175 | _p_spi->write(MAX7219_NO_OP); |
j3 | 0:798fb343e022 | 176 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 177 | } |
j3 | 0:798fb343e022 | 178 | } |
j3 | 0:798fb343e022 | 179 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 180 | |
j3 | 0:798fb343e022 | 181 | wait_us(1); |
j3 | 0:798fb343e022 | 182 | |
j3 | 0:798fb343e022 | 183 | //write SCAN_LIMT register of device |
j3 | 0:798fb343e022 | 184 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 185 | for(idx = _num_devices; idx > 0; idx--) |
j3 | 0:798fb343e022 | 186 | { |
j3 | 0:798fb343e022 | 187 | if(config.device_number == idx) |
j3 | 0:798fb343e022 | 188 | { |
j3 | 0:798fb343e022 | 189 | _p_spi->write(MAX7219_SCAN_LIMIT); |
j3 | 0:798fb343e022 | 190 | _p_spi->write(config.scan_limit); |
j3 | 0:798fb343e022 | 191 | } |
j3 | 0:798fb343e022 | 192 | else |
j3 | 0:798fb343e022 | 193 | { |
j3 | 0:798fb343e022 | 194 | _p_spi->write(MAX7219_NO_OP); |
j3 | 0:798fb343e022 | 195 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 196 | } |
j3 | 0:798fb343e022 | 197 | } |
j3 | 0:798fb343e022 | 198 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 199 | |
j3 | 0:798fb343e022 | 200 | wait_us(1); |
j3 | 0:798fb343e022 | 201 | |
j3 | 0:798fb343e022 | 202 | rtn_val = 0; |
j3 | 0:798fb343e022 | 203 | } |
j3 | 0:798fb343e022 | 204 | |
j3 | 0:798fb343e022 | 205 | return(rtn_val); |
j3 | 0:798fb343e022 | 206 | } |
j3 | 0:798fb343e022 | 207 | |
j3 | 0:798fb343e022 | 208 | |
j3 | 0:798fb343e022 | 209 | //********************************************************************* |
j3 | 0:798fb343e022 | 210 | void Max7219::init_display(max7219_configuration_t config) |
j3 | 0:798fb343e022 | 211 | { |
j3 | 0:798fb343e022 | 212 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 213 | |
j3 | 0:798fb343e022 | 214 | //write DECODE_MODE register of all devices |
j3 | 0:798fb343e022 | 215 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 216 | for(idx = 0; idx < _num_devices; idx++) |
j3 | 0:798fb343e022 | 217 | { |
j3 | 0:798fb343e022 | 218 | _p_spi->write(MAX7219_DECODE_MODE); |
j3 | 0:798fb343e022 | 219 | _p_spi->write(config.decode_mode); |
j3 | 0:798fb343e022 | 220 | } |
j3 | 0:798fb343e022 | 221 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 222 | |
j3 | 0:798fb343e022 | 223 | wait_us(1); |
j3 | 0:798fb343e022 | 224 | |
j3 | 0:798fb343e022 | 225 | //write INTENSITY register of all devices |
j3 | 0:798fb343e022 | 226 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 227 | for(idx = 0; idx < _num_devices; idx++) |
j3 | 0:798fb343e022 | 228 | { |
j3 | 0:798fb343e022 | 229 | _p_spi->write(MAX7219_INTENSITY); |
j3 | 0:798fb343e022 | 230 | _p_spi->write(config.intensity); |
j3 | 0:798fb343e022 | 231 | } |
j3 | 0:798fb343e022 | 232 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 233 | |
j3 | 0:798fb343e022 | 234 | wait_us(1); |
j3 | 0:798fb343e022 | 235 | |
j3 | 0:798fb343e022 | 236 | //write SCAN_LIMT register of all devices |
j3 | 0:798fb343e022 | 237 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 238 | for(idx = 0; idx < _num_devices; idx++) |
j3 | 0:798fb343e022 | 239 | { |
j3 | 0:798fb343e022 | 240 | _p_spi->write(MAX7219_SCAN_LIMIT); |
j3 | 0:798fb343e022 | 241 | _p_spi->write(config.scan_limit); |
j3 | 0:798fb343e022 | 242 | } |
j3 | 0:798fb343e022 | 243 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 244 | |
j3 | 0:798fb343e022 | 245 | wait_us(1); |
j3 | 0:798fb343e022 | 246 | } |
j3 | 0:798fb343e022 | 247 | |
j3 | 0:798fb343e022 | 248 | |
j3 | 0:798fb343e022 | 249 | //********************************************************************* |
j3 | 0:798fb343e022 | 250 | int32_t Max7219::enable_device(uint8_t device_number) |
j3 | 0:798fb343e022 | 251 | { |
j3 | 0:798fb343e022 | 252 | int32_t rtn_val = -1; |
j3 | 0:798fb343e022 | 253 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 254 | |
j3 | 0:798fb343e022 | 255 | if(device_number > _num_devices) |
j3 | 0:798fb343e022 | 256 | { |
j3 | 0:798fb343e022 | 257 | rtn_val = -1; |
j3 | 0:798fb343e022 | 258 | } |
j3 | 0:798fb343e022 | 259 | else if(device_number == 0) |
j3 | 0:798fb343e022 | 260 | { |
j3 | 0:798fb343e022 | 261 | //device numbering starts with index 1 |
j3 | 0:798fb343e022 | 262 | rtn_val = -2; |
j3 | 0:798fb343e022 | 263 | } |
j3 | 0:798fb343e022 | 264 | else |
j3 | 0:798fb343e022 | 265 | { |
j3 | 0:798fb343e022 | 266 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 267 | for(idx = _num_devices; idx > 0; idx--) |
j3 | 0:798fb343e022 | 268 | { |
j3 | 0:798fb343e022 | 269 | if(device_number == idx) |
j3 | 0:798fb343e022 | 270 | { |
j3 | 0:798fb343e022 | 271 | _p_spi->write(MAX7219_SHUTDOWN); |
j3 | 0:798fb343e022 | 272 | _p_spi->write(1); |
j3 | 0:798fb343e022 | 273 | } |
j3 | 0:798fb343e022 | 274 | else |
j3 | 0:798fb343e022 | 275 | { |
j3 | 0:798fb343e022 | 276 | _p_spi->write(MAX7219_NO_OP); |
j3 | 0:798fb343e022 | 277 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 278 | } |
j3 | 0:798fb343e022 | 279 | } |
j3 | 0:798fb343e022 | 280 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 281 | |
j3 | 0:798fb343e022 | 282 | rtn_val = 0; |
j3 | 0:798fb343e022 | 283 | } |
j3 | 0:798fb343e022 | 284 | |
j3 | 0:798fb343e022 | 285 | return(rtn_val); |
j3 | 0:798fb343e022 | 286 | } |
j3 | 0:798fb343e022 | 287 | |
j3 | 0:798fb343e022 | 288 | |
j3 | 0:798fb343e022 | 289 | //********************************************************************* |
j3 | 0:798fb343e022 | 290 | void Max7219::enable_display(void) |
j3 | 0:798fb343e022 | 291 | { |
j3 | 0:798fb343e022 | 292 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 293 | |
j3 | 0:798fb343e022 | 294 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 295 | for(idx = 0; idx < _num_devices; idx++) |
j3 | 0:798fb343e022 | 296 | { |
j3 | 0:798fb343e022 | 297 | _p_spi->write(MAX7219_SHUTDOWN); |
j3 | 0:798fb343e022 | 298 | _p_spi->write(1); |
j3 | 0:798fb343e022 | 299 | } |
j3 | 0:798fb343e022 | 300 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 301 | } |
j3 | 0:798fb343e022 | 302 | |
j3 | 0:798fb343e022 | 303 | |
j3 | 0:798fb343e022 | 304 | //********************************************************************* |
j3 | 0:798fb343e022 | 305 | int32_t Max7219::disable_device(uint8_t device_number) |
j3 | 0:798fb343e022 | 306 | { |
j3 | 0:798fb343e022 | 307 | int32_t rtn_val = -1; |
j3 | 0:798fb343e022 | 308 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 309 | |
j3 | 0:798fb343e022 | 310 | if(device_number > _num_devices) |
j3 | 0:798fb343e022 | 311 | { |
j3 | 0:798fb343e022 | 312 | rtn_val = -1; |
j3 | 0:798fb343e022 | 313 | } |
j3 | 0:798fb343e022 | 314 | else if(device_number == 0) |
j3 | 0:798fb343e022 | 315 | { |
j3 | 0:798fb343e022 | 316 | //device numbering starts with index 1 |
j3 | 0:798fb343e022 | 317 | rtn_val = -2; |
j3 | 0:798fb343e022 | 318 | } |
j3 | 0:798fb343e022 | 319 | else |
j3 | 0:798fb343e022 | 320 | { |
j3 | 0:798fb343e022 | 321 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 322 | for(idx = _num_devices; idx > 0; idx--) |
j3 | 0:798fb343e022 | 323 | { |
j3 | 0:798fb343e022 | 324 | if(device_number == idx) |
j3 | 0:798fb343e022 | 325 | { |
j3 | 0:798fb343e022 | 326 | _p_spi->write(MAX7219_SHUTDOWN); |
j3 | 0:798fb343e022 | 327 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 328 | } |
j3 | 0:798fb343e022 | 329 | else |
j3 | 0:798fb343e022 | 330 | { |
j3 | 0:798fb343e022 | 331 | _p_spi->write(MAX7219_NO_OP); |
j3 | 0:798fb343e022 | 332 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 333 | } |
j3 | 0:798fb343e022 | 334 | } |
j3 | 0:798fb343e022 | 335 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 336 | |
j3 | 0:798fb343e022 | 337 | rtn_val = 0; |
j3 | 0:798fb343e022 | 338 | } |
j3 | 0:798fb343e022 | 339 | |
j3 | 0:798fb343e022 | 340 | return(rtn_val); |
j3 | 0:798fb343e022 | 341 | } |
j3 | 0:798fb343e022 | 342 | |
j3 | 0:798fb343e022 | 343 | |
j3 | 0:798fb343e022 | 344 | //********************************************************************* |
j3 | 0:798fb343e022 | 345 | void Max7219::disable_display(void) |
j3 | 0:798fb343e022 | 346 | { |
j3 | 0:798fb343e022 | 347 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 348 | |
j3 | 0:798fb343e022 | 349 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 350 | for(idx = 0; idx < _num_devices; idx++) |
j3 | 0:798fb343e022 | 351 | { |
j3 | 0:798fb343e022 | 352 | _p_spi->write(MAX7219_SHUTDOWN); |
j3 | 0:798fb343e022 | 353 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 354 | } |
j3 | 0:798fb343e022 | 355 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 356 | } |
j3 | 0:798fb343e022 | 357 | |
j3 | 0:798fb343e022 | 358 | |
j3 | 0:798fb343e022 | 359 | |
j3 | 0:798fb343e022 | 360 | //********************************************************************* |
j3 | 0:798fb343e022 | 361 | int32_t Max7219::write_digit(uint8_t device_number, uint8_t digit, uint8_t data) |
j3 | 0:798fb343e022 | 362 | { |
j3 | 0:798fb343e022 | 363 | int32_t rtn_val = -1; |
j3 | 0:798fb343e022 | 364 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 365 | |
j3 | 0:798fb343e022 | 366 | if(digit > MAX7219_DIGIT_7) |
j3 | 0:798fb343e022 | 367 | { |
j3 | 0:798fb343e022 | 368 | rtn_val = -3; |
j3 | 0:798fb343e022 | 369 | } |
j3 | 0:798fb343e022 | 370 | else if(digit < MAX7219_DIGIT_0) |
j3 | 0:798fb343e022 | 371 | { |
j3 | 0:798fb343e022 | 372 | rtn_val = -4; |
j3 | 0:798fb343e022 | 373 | } |
j3 | 0:798fb343e022 | 374 | else |
j3 | 0:798fb343e022 | 375 | { |
j3 | 0:798fb343e022 | 376 | if(device_number > _num_devices) |
j3 | 0:798fb343e022 | 377 | { |
j3 | 0:798fb343e022 | 378 | rtn_val = -1; |
j3 | 0:798fb343e022 | 379 | } |
j3 | 0:798fb343e022 | 380 | else if(device_number == 0) |
j3 | 0:798fb343e022 | 381 | { |
j3 | 0:798fb343e022 | 382 | rtn_val = -2; |
j3 | 0:798fb343e022 | 383 | } |
j3 | 0:798fb343e022 | 384 | else |
j3 | 0:798fb343e022 | 385 | { |
j3 | 0:798fb343e022 | 386 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 387 | for(idx = _num_devices; idx > 0; idx--) |
j3 | 0:798fb343e022 | 388 | { |
j3 | 0:798fb343e022 | 389 | if(idx == device_number) |
j3 | 0:798fb343e022 | 390 | { |
j3 | 0:798fb343e022 | 391 | _p_spi->write(digit); |
j3 | 0:798fb343e022 | 392 | _p_spi->write(data); |
j3 | 0:798fb343e022 | 393 | } |
j3 | 0:798fb343e022 | 394 | else |
j3 | 0:798fb343e022 | 395 | { |
j3 | 0:798fb343e022 | 396 | _p_spi->write(MAX7219_NO_OP); |
j3 | 0:798fb343e022 | 397 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 398 | } |
j3 | 0:798fb343e022 | 399 | } |
j3 | 0:798fb343e022 | 400 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 401 | |
j3 | 0:798fb343e022 | 402 | rtn_val = 0; |
j3 | 0:798fb343e022 | 403 | } |
j3 | 0:798fb343e022 | 404 | } |
j3 | 0:798fb343e022 | 405 | |
j3 | 0:798fb343e022 | 406 | return(rtn_val); |
j3 | 0:798fb343e022 | 407 | } |
j3 | 0:798fb343e022 | 408 | |
j3 | 0:798fb343e022 | 409 | |
j3 | 0:798fb343e022 | 410 | //********************************************************************* |
j3 | 0:798fb343e022 | 411 | int32_t Max7219::clear_digit(uint8_t device_number, uint8_t digit) |
j3 | 0:798fb343e022 | 412 | { |
j3 | 0:798fb343e022 | 413 | int32_t rtn_val = -1; |
j3 | 0:798fb343e022 | 414 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 415 | |
j3 | 0:798fb343e022 | 416 | if(digit > MAX7219_DIGIT_7) |
j3 | 0:798fb343e022 | 417 | { |
j3 | 0:798fb343e022 | 418 | rtn_val = -3; |
j3 | 0:798fb343e022 | 419 | } |
j3 | 0:798fb343e022 | 420 | else if(digit < MAX7219_DIGIT_0) |
j3 | 0:798fb343e022 | 421 | { |
j3 | 0:798fb343e022 | 422 | rtn_val = -4; |
j3 | 0:798fb343e022 | 423 | } |
j3 | 0:798fb343e022 | 424 | else |
j3 | 0:798fb343e022 | 425 | { |
j3 | 0:798fb343e022 | 426 | if(device_number > _num_devices) |
j3 | 0:798fb343e022 | 427 | { |
j3 | 0:798fb343e022 | 428 | rtn_val = -1; |
j3 | 0:798fb343e022 | 429 | } |
j3 | 0:798fb343e022 | 430 | else if(device_number == 0) |
j3 | 0:798fb343e022 | 431 | { |
j3 | 0:798fb343e022 | 432 | rtn_val = -2; |
j3 | 0:798fb343e022 | 433 | } |
j3 | 0:798fb343e022 | 434 | else |
j3 | 0:798fb343e022 | 435 | { |
j3 | 0:798fb343e022 | 436 | _p_cs->write(0); |
j3 | 0:798fb343e022 | 437 | for(idx = _num_devices; idx > 0; idx--) |
j3 | 0:798fb343e022 | 438 | { |
j3 | 0:798fb343e022 | 439 | if(idx == device_number) |
j3 | 0:798fb343e022 | 440 | { |
j3 | 0:798fb343e022 | 441 | _p_spi->write(digit); |
j3 | 0:798fb343e022 | 442 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 443 | } |
j3 | 0:798fb343e022 | 444 | else |
j3 | 0:798fb343e022 | 445 | { |
j3 | 0:798fb343e022 | 446 | _p_spi->write(MAX7219_NO_OP); |
j3 | 0:798fb343e022 | 447 | _p_spi->write(0); |
j3 | 0:798fb343e022 | 448 | } |
j3 | 0:798fb343e022 | 449 | } |
j3 | 0:798fb343e022 | 450 | _p_cs->write(1); |
j3 | 0:798fb343e022 | 451 | |
j3 | 0:798fb343e022 | 452 | rtn_val = 0; |
j3 | 0:798fb343e022 | 453 | } |
j3 | 0:798fb343e022 | 454 | } |
j3 | 0:798fb343e022 | 455 | |
j3 | 0:798fb343e022 | 456 | return(rtn_val); |
j3 | 0:798fb343e022 | 457 | } |
j3 | 0:798fb343e022 | 458 | |
j3 | 0:798fb343e022 | 459 | |
j3 | 0:798fb343e022 | 460 | //********************************************************************* |
j3 | 0:798fb343e022 | 461 | int32_t Max7219::device_all_on(uint8_t device_number) |
j3 | 0:798fb343e022 | 462 | { |
j3 | 0:798fb343e022 | 463 | int32_t rtn_val = -1; |
j3 | 0:798fb343e022 | 464 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 465 | |
j3 | 0:798fb343e022 | 466 | if(device_number > _num_devices) |
j3 | 0:798fb343e022 | 467 | { |
j3 | 0:798fb343e022 | 468 | rtn_val = -1; |
j3 | 0:798fb343e022 | 469 | } |
j3 | 0:798fb343e022 | 470 | else if(device_number == 0) |
j3 | 0:798fb343e022 | 471 | { |
j3 | 0:798fb343e022 | 472 | rtn_val = -2; |
j3 | 0:798fb343e022 | 473 | } |
j3 | 0:798fb343e022 | 474 | else |
j3 | 0:798fb343e022 | 475 | { |
j3 | 0:798fb343e022 | 476 | rtn_val = 0; |
j3 | 0:798fb343e022 | 477 | |
j3 | 0:798fb343e022 | 478 | //writes every digit of given device to 0xFF |
j3 | 0:798fb343e022 | 479 | for(idx = 0; idx < 8; idx++) |
j3 | 0:798fb343e022 | 480 | { |
j3 | 0:798fb343e022 | 481 | if(rtn_val == 0) |
j3 | 0:798fb343e022 | 482 | { |
j3 | 0:798fb343e022 | 483 | rtn_val = write_digit(device_number, (idx + 1), 0xFF); |
j3 | 0:798fb343e022 | 484 | } |
j3 | 0:798fb343e022 | 485 | } |
j3 | 0:798fb343e022 | 486 | } |
j3 | 0:798fb343e022 | 487 | |
j3 | 0:798fb343e022 | 488 | return(rtn_val); |
j3 | 0:798fb343e022 | 489 | } |
j3 | 0:798fb343e022 | 490 | |
j3 | 0:798fb343e022 | 491 | |
j3 | 0:798fb343e022 | 492 | //********************************************************************* |
j3 | 0:798fb343e022 | 493 | int32_t Max7219::device_all_off(uint8_t device_number) |
j3 | 0:798fb343e022 | 494 | { |
j3 | 0:798fb343e022 | 495 | int32_t rtn_val = -1; |
j3 | 0:798fb343e022 | 496 | uint8_t idx = 0; |
j3 | 0:798fb343e022 | 497 | |
j3 | 0:798fb343e022 | 498 | if(device_number > _num_devices) |
j3 | 0:798fb343e022 | 499 | { |
j3 | 0:798fb343e022 | 500 | rtn_val = -1; |
j3 | 0:798fb343e022 | 501 | } |
j3 | 0:798fb343e022 | 502 | else if(device_number == 0) |
j3 | 0:798fb343e022 | 503 | { |
j3 | 0:798fb343e022 | 504 | rtn_val = -2; |
j3 | 0:798fb343e022 | 505 | } |
j3 | 0:798fb343e022 | 506 | else |
j3 | 0:798fb343e022 | 507 | { |
j3 | 0:798fb343e022 | 508 | rtn_val = 0; |
j3 | 0:798fb343e022 | 509 | |
j3 | 0:798fb343e022 | 510 | //writes every digit of given device to 0 |
j3 | 0:798fb343e022 | 511 | for(idx = 0; idx < 8; idx++) |
j3 | 0:798fb343e022 | 512 | { |
j3 | 0:798fb343e022 | 513 | if(rtn_val == 0) |
j3 | 0:798fb343e022 | 514 | { |
j3 | 0:798fb343e022 | 515 | rtn_val = write_digit(device_number, (idx + 1), 0); |
j3 | 0:798fb343e022 | 516 | } |
j3 | 0:798fb343e022 | 517 | } |
j3 | 0:798fb343e022 | 518 | } |
j3 | 0:798fb343e022 | 519 | |
j3 | 0:798fb343e022 | 520 | return(rtn_val); |
j3 | 0:798fb343e022 | 521 | } |
j3 | 0:798fb343e022 | 522 | |
j3 | 0:798fb343e022 | 523 | |
j3 | 0:798fb343e022 | 524 | void Max7219::display_all_on(void) |
j3 | 0:798fb343e022 | 525 | { |
j3 | 0:798fb343e022 | 526 | uint8_t idx, idy; |
j3 | 0:798fb343e022 | 527 | |
j3 | 0:798fb343e022 | 528 | //writes every digit of every device to 0xFF |
j3 | 0:798fb343e022 | 529 | for(idx = 0; idx < _num_devices; idx++) |
j3 | 0:798fb343e022 | 530 | { |
j3 | 0:798fb343e022 | 531 | for(idy = 0; idy < MAX7219_DIGIT_7; idy++) |
j3 | 0:798fb343e022 | 532 | { |
j3 | 0:798fb343e022 | 533 | write_digit((idx + 1), (idy + 1), 0xFF); |
j3 | 0:798fb343e022 | 534 | } |
j3 | 0:798fb343e022 | 535 | } |
j3 | 0:798fb343e022 | 536 | } |
j3 | 0:798fb343e022 | 537 | |
j3 | 0:798fb343e022 | 538 | |
j3 | 0:798fb343e022 | 539 | void Max7219::display_all_off(void) |
j3 | 0:798fb343e022 | 540 | { |
j3 | 0:798fb343e022 | 541 | uint8_t idx, idy; |
j3 | 0:798fb343e022 | 542 | |
j3 | 0:798fb343e022 | 543 | //writes every digit of every device to 0 |
j3 | 0:798fb343e022 | 544 | for(idx = 0; idx < _num_devices; idx++) |
j3 | 0:798fb343e022 | 545 | { |
j3 | 0:798fb343e022 | 546 | for(idy = 0; idy < MAX7219_DIGIT_7; idy++) |
j3 | 0:798fb343e022 | 547 | { |
j3 | 0:798fb343e022 | 548 | write_digit((idx + 1), (idy + 1), 0); |
j3 | 0:798fb343e022 | 549 | } |
j3 | 0:798fb343e022 | 550 | } |
j3 | 0:798fb343e022 | 551 | } |
j3 | 0:798fb343e022 | 552 |