test
as1115.cpp@0:ef4b1297d850, 2018-04-16 (annotated)
- Committer:
- williamweatherholtz
- Date:
- Mon Apr 16 13:15:07 2018 +0000
- Revision:
- 0:ef4b1297d850
- Child:
- 1:b686a4955357
test
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
williamweatherholtz | 0:ef4b1297d850 | 1 | /******************************************************************//** |
williamweatherholtz | 0:ef4b1297d850 | 2 | * @file max7219.cpp |
williamweatherholtz | 0:ef4b1297d850 | 3 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
williamweatherholtz | 0:ef4b1297d850 | 4 | * |
williamweatherholtz | 0:ef4b1297d850 | 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
williamweatherholtz | 0:ef4b1297d850 | 6 | * copy of this software and associated documentation files (the "Software"), |
williamweatherholtz | 0:ef4b1297d850 | 7 | * to deal in the Software without restriction, including without limitation |
williamweatherholtz | 0:ef4b1297d850 | 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
williamweatherholtz | 0:ef4b1297d850 | 9 | * and/or sell copies of the Software, and to permit persons to whom the |
williamweatherholtz | 0:ef4b1297d850 | 10 | * Software is furnished to do so, subject to the following conditions: |
williamweatherholtz | 0:ef4b1297d850 | 11 | * |
williamweatherholtz | 0:ef4b1297d850 | 12 | * The above copyright notice and this permission notice shall be included |
williamweatherholtz | 0:ef4b1297d850 | 13 | * in all copies or substantial portions of the Software. |
williamweatherholtz | 0:ef4b1297d850 | 14 | * |
williamweatherholtz | 0:ef4b1297d850 | 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
williamweatherholtz | 0:ef4b1297d850 | 16 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
williamweatherholtz | 0:ef4b1297d850 | 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
williamweatherholtz | 0:ef4b1297d850 | 18 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
williamweatherholtz | 0:ef4b1297d850 | 19 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
williamweatherholtz | 0:ef4b1297d850 | 20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
williamweatherholtz | 0:ef4b1297d850 | 21 | * OTHER DEALINGS IN THE SOFTWARE. |
williamweatherholtz | 0:ef4b1297d850 | 22 | * |
williamweatherholtz | 0:ef4b1297d850 | 23 | * Except as contained in this notice, the name of Maxim Integrated |
williamweatherholtz | 0:ef4b1297d850 | 24 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
williamweatherholtz | 0:ef4b1297d850 | 25 | * Products, Inc. Branding Policy. |
williamweatherholtz | 0:ef4b1297d850 | 26 | * |
williamweatherholtz | 0:ef4b1297d850 | 27 | * The mere transfer of this software does not imply any licenses |
williamweatherholtz | 0:ef4b1297d850 | 28 | * of trade secrets, proprietary technology, copyrights, patents, |
williamweatherholtz | 0:ef4b1297d850 | 29 | * trademarks, maskwork rights, or any other form of intellectual |
williamweatherholtz | 0:ef4b1297d850 | 30 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
williamweatherholtz | 0:ef4b1297d850 | 31 | * ownership rights. |
williamweatherholtz | 0:ef4b1297d850 | 32 | **********************************************************************/ |
williamweatherholtz | 0:ef4b1297d850 | 33 | |
williamweatherholtz | 0:ef4b1297d850 | 34 | |
williamweatherholtz | 0:ef4b1297d850 | 35 | #include "max7219.h" |
williamweatherholtz | 0:ef4b1297d850 | 36 | |
williamweatherholtz | 0:ef4b1297d850 | 37 | |
williamweatherholtz | 0:ef4b1297d850 | 38 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 39 | Max7219::Max7219(SPI *spi_bus, PinName cs): _p_spi(spi_bus) |
williamweatherholtz | 0:ef4b1297d850 | 40 | { |
williamweatherholtz | 0:ef4b1297d850 | 41 | _num_devices = 1; |
williamweatherholtz | 0:ef4b1297d850 | 42 | |
williamweatherholtz | 0:ef4b1297d850 | 43 | _p_cs = new DigitalOut(cs, 1); |
williamweatherholtz | 0:ef4b1297d850 | 44 | _spi_owner = false; |
williamweatherholtz | 0:ef4b1297d850 | 45 | } |
williamweatherholtz | 0:ef4b1297d850 | 46 | |
williamweatherholtz | 0:ef4b1297d850 | 47 | |
williamweatherholtz | 0:ef4b1297d850 | 48 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 49 | Max7219::Max7219(PinName mosi, PinName miso, PinName sclk, PinName cs) |
williamweatherholtz | 0:ef4b1297d850 | 50 | { |
williamweatherholtz | 0:ef4b1297d850 | 51 | _num_devices = 1; |
williamweatherholtz | 0:ef4b1297d850 | 52 | |
williamweatherholtz | 0:ef4b1297d850 | 53 | _p_spi = new SPI(mosi, miso, sclk); |
williamweatherholtz | 0:ef4b1297d850 | 54 | _p_cs = new DigitalOut(cs, 1); |
williamweatherholtz | 0:ef4b1297d850 | 55 | |
williamweatherholtz | 0:ef4b1297d850 | 56 | _spi_owner = true; |
williamweatherholtz | 0:ef4b1297d850 | 57 | } |
williamweatherholtz | 0:ef4b1297d850 | 58 | |
williamweatherholtz | 0:ef4b1297d850 | 59 | |
williamweatherholtz | 0:ef4b1297d850 | 60 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 61 | Max7219::~Max7219() |
williamweatherholtz | 0:ef4b1297d850 | 62 | { |
williamweatherholtz | 0:ef4b1297d850 | 63 | delete _p_cs; |
williamweatherholtz | 0:ef4b1297d850 | 64 | |
williamweatherholtz | 0:ef4b1297d850 | 65 | if(_spi_owner) |
williamweatherholtz | 0:ef4b1297d850 | 66 | { |
williamweatherholtz | 0:ef4b1297d850 | 67 | delete _p_spi; |
williamweatherholtz | 0:ef4b1297d850 | 68 | } |
williamweatherholtz | 0:ef4b1297d850 | 69 | } |
williamweatherholtz | 0:ef4b1297d850 | 70 | |
williamweatherholtz | 0:ef4b1297d850 | 71 | |
williamweatherholtz | 0:ef4b1297d850 | 72 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 73 | int32_t Max7219::set_num_devices(uint8_t num_devices) |
williamweatherholtz | 0:ef4b1297d850 | 74 | { |
williamweatherholtz | 0:ef4b1297d850 | 75 | int32_t rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 76 | |
williamweatherholtz | 0:ef4b1297d850 | 77 | if(num_devices > 0) |
williamweatherholtz | 0:ef4b1297d850 | 78 | { |
williamweatherholtz | 0:ef4b1297d850 | 79 | _num_devices = num_devices; |
williamweatherholtz | 0:ef4b1297d850 | 80 | rtn_val = _num_devices; |
williamweatherholtz | 0:ef4b1297d850 | 81 | } |
williamweatherholtz | 0:ef4b1297d850 | 82 | |
williamweatherholtz | 0:ef4b1297d850 | 83 | return(rtn_val); |
williamweatherholtz | 0:ef4b1297d850 | 84 | } |
williamweatherholtz | 0:ef4b1297d850 | 85 | |
williamweatherholtz | 0:ef4b1297d850 | 86 | |
williamweatherholtz | 0:ef4b1297d850 | 87 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 88 | void Max7219::set_display_test(void) |
williamweatherholtz | 0:ef4b1297d850 | 89 | { |
williamweatherholtz | 0:ef4b1297d850 | 90 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 91 | |
williamweatherholtz | 0:ef4b1297d850 | 92 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 93 | for(idx = 0; idx < _num_devices; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 94 | { |
williamweatherholtz | 0:ef4b1297d850 | 95 | _p_spi->write(MAX7219_DISPLAY_TEST); |
williamweatherholtz | 0:ef4b1297d850 | 96 | _p_spi->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 97 | } |
williamweatherholtz | 0:ef4b1297d850 | 98 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 99 | } |
williamweatherholtz | 0:ef4b1297d850 | 100 | |
williamweatherholtz | 0:ef4b1297d850 | 101 | |
williamweatherholtz | 0:ef4b1297d850 | 102 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 103 | void Max7219::clear_display_test(void) |
williamweatherholtz | 0:ef4b1297d850 | 104 | { |
williamweatherholtz | 0:ef4b1297d850 | 105 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 106 | |
williamweatherholtz | 0:ef4b1297d850 | 107 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 108 | for(idx = 0; idx < _num_devices; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 109 | { |
williamweatherholtz | 0:ef4b1297d850 | 110 | _p_spi->write(MAX7219_DISPLAY_TEST); |
williamweatherholtz | 0:ef4b1297d850 | 111 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 112 | } |
williamweatherholtz | 0:ef4b1297d850 | 113 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 114 | } |
williamweatherholtz | 0:ef4b1297d850 | 115 | |
williamweatherholtz | 0:ef4b1297d850 | 116 | |
williamweatherholtz | 0:ef4b1297d850 | 117 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 118 | int32_t Max7219::init_device(max7219_configuration_t config) |
williamweatherholtz | 0:ef4b1297d850 | 119 | { |
williamweatherholtz | 0:ef4b1297d850 | 120 | int32_t rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 121 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 122 | |
williamweatherholtz | 0:ef4b1297d850 | 123 | if(config.device_number > _num_devices) |
williamweatherholtz | 0:ef4b1297d850 | 124 | { |
williamweatherholtz | 0:ef4b1297d850 | 125 | rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 126 | } |
williamweatherholtz | 0:ef4b1297d850 | 127 | else if(config.device_number == 0) |
williamweatherholtz | 0:ef4b1297d850 | 128 | { |
williamweatherholtz | 0:ef4b1297d850 | 129 | //device numbering starts with index 1 |
williamweatherholtz | 0:ef4b1297d850 | 130 | rtn_val = -2; |
williamweatherholtz | 0:ef4b1297d850 | 131 | } |
williamweatherholtz | 0:ef4b1297d850 | 132 | else |
williamweatherholtz | 0:ef4b1297d850 | 133 | { |
williamweatherholtz | 0:ef4b1297d850 | 134 | //write DECODE_MODE register of device |
williamweatherholtz | 0:ef4b1297d850 | 135 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 136 | for(idx = _num_devices; idx > 0; idx--) |
williamweatherholtz | 0:ef4b1297d850 | 137 | { |
williamweatherholtz | 0:ef4b1297d850 | 138 | if(config.device_number == idx) |
williamweatherholtz | 0:ef4b1297d850 | 139 | { |
williamweatherholtz | 0:ef4b1297d850 | 140 | _p_spi->write(MAX7219_DECODE_MODE); |
williamweatherholtz | 0:ef4b1297d850 | 141 | _p_spi->write(config.decode_mode); |
williamweatherholtz | 0:ef4b1297d850 | 142 | } |
williamweatherholtz | 0:ef4b1297d850 | 143 | else |
williamweatherholtz | 0:ef4b1297d850 | 144 | { |
williamweatherholtz | 0:ef4b1297d850 | 145 | _p_spi->write(MAX7219_NO_OP); |
williamweatherholtz | 0:ef4b1297d850 | 146 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 147 | } |
williamweatherholtz | 0:ef4b1297d850 | 148 | } |
williamweatherholtz | 0:ef4b1297d850 | 149 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 150 | |
williamweatherholtz | 0:ef4b1297d850 | 151 | wait_us(1); |
williamweatherholtz | 0:ef4b1297d850 | 152 | |
williamweatherholtz | 0:ef4b1297d850 | 153 | //write INTENSITY register of device |
williamweatherholtz | 0:ef4b1297d850 | 154 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 155 | for(idx = _num_devices; idx > 0; idx--) |
williamweatherholtz | 0:ef4b1297d850 | 156 | { |
williamweatherholtz | 0:ef4b1297d850 | 157 | if(config.device_number == idx) |
williamweatherholtz | 0:ef4b1297d850 | 158 | { |
williamweatherholtz | 0:ef4b1297d850 | 159 | _p_spi->write(MAX7219_INTENSITY); |
williamweatherholtz | 0:ef4b1297d850 | 160 | _p_spi->write(config.intensity); |
williamweatherholtz | 0:ef4b1297d850 | 161 | } |
williamweatherholtz | 0:ef4b1297d850 | 162 | else |
williamweatherholtz | 0:ef4b1297d850 | 163 | { |
williamweatherholtz | 0:ef4b1297d850 | 164 | _p_spi->write(MAX7219_NO_OP); |
williamweatherholtz | 0:ef4b1297d850 | 165 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 166 | } |
williamweatherholtz | 0:ef4b1297d850 | 167 | } |
williamweatherholtz | 0:ef4b1297d850 | 168 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 169 | |
williamweatherholtz | 0:ef4b1297d850 | 170 | wait_us(1); |
williamweatherholtz | 0:ef4b1297d850 | 171 | |
williamweatherholtz | 0:ef4b1297d850 | 172 | //write SCAN_LIMT register of device |
williamweatherholtz | 0:ef4b1297d850 | 173 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 174 | for(idx = _num_devices; idx > 0; idx--) |
williamweatherholtz | 0:ef4b1297d850 | 175 | { |
williamweatherholtz | 0:ef4b1297d850 | 176 | if(config.device_number == idx) |
williamweatherholtz | 0:ef4b1297d850 | 177 | { |
williamweatherholtz | 0:ef4b1297d850 | 178 | _p_spi->write(MAX7219_SCAN_LIMIT); |
williamweatherholtz | 0:ef4b1297d850 | 179 | _p_spi->write(config.scan_limit); |
williamweatherholtz | 0:ef4b1297d850 | 180 | } |
williamweatherholtz | 0:ef4b1297d850 | 181 | else |
williamweatherholtz | 0:ef4b1297d850 | 182 | { |
williamweatherholtz | 0:ef4b1297d850 | 183 | _p_spi->write(MAX7219_NO_OP); |
williamweatherholtz | 0:ef4b1297d850 | 184 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 185 | } |
williamweatherholtz | 0:ef4b1297d850 | 186 | } |
williamweatherholtz | 0:ef4b1297d850 | 187 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 188 | |
williamweatherholtz | 0:ef4b1297d850 | 189 | wait_us(1); |
williamweatherholtz | 0:ef4b1297d850 | 190 | |
williamweatherholtz | 0:ef4b1297d850 | 191 | rtn_val = 0; |
williamweatherholtz | 0:ef4b1297d850 | 192 | } |
williamweatherholtz | 0:ef4b1297d850 | 193 | |
williamweatherholtz | 0:ef4b1297d850 | 194 | return(rtn_val); |
williamweatherholtz | 0:ef4b1297d850 | 195 | } |
williamweatherholtz | 0:ef4b1297d850 | 196 | |
williamweatherholtz | 0:ef4b1297d850 | 197 | |
williamweatherholtz | 0:ef4b1297d850 | 198 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 199 | void Max7219::init_display(max7219_configuration_t config) |
williamweatherholtz | 0:ef4b1297d850 | 200 | { |
williamweatherholtz | 0:ef4b1297d850 | 201 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 202 | |
williamweatherholtz | 0:ef4b1297d850 | 203 | //write DECODE_MODE register of all devices |
williamweatherholtz | 0:ef4b1297d850 | 204 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 205 | for(idx = 0; idx < _num_devices; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 206 | { |
williamweatherholtz | 0:ef4b1297d850 | 207 | _p_spi->write(MAX7219_DECODE_MODE); |
williamweatherholtz | 0:ef4b1297d850 | 208 | _p_spi->write(config.decode_mode); |
williamweatherholtz | 0:ef4b1297d850 | 209 | } |
williamweatherholtz | 0:ef4b1297d850 | 210 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 211 | |
williamweatherholtz | 0:ef4b1297d850 | 212 | wait_us(1); |
williamweatherholtz | 0:ef4b1297d850 | 213 | |
williamweatherholtz | 0:ef4b1297d850 | 214 | //write INTENSITY register of all devices |
williamweatherholtz | 0:ef4b1297d850 | 215 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 216 | for(idx = 0; idx < _num_devices; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 217 | { |
williamweatherholtz | 0:ef4b1297d850 | 218 | _p_spi->write(MAX7219_INTENSITY); |
williamweatherholtz | 0:ef4b1297d850 | 219 | _p_spi->write(config.intensity); |
williamweatherholtz | 0:ef4b1297d850 | 220 | } |
williamweatherholtz | 0:ef4b1297d850 | 221 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 222 | |
williamweatherholtz | 0:ef4b1297d850 | 223 | wait_us(1); |
williamweatherholtz | 0:ef4b1297d850 | 224 | |
williamweatherholtz | 0:ef4b1297d850 | 225 | //write SCAN_LIMT register of all devices |
williamweatherholtz | 0:ef4b1297d850 | 226 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 227 | for(idx = 0; idx < _num_devices; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 228 | { |
williamweatherholtz | 0:ef4b1297d850 | 229 | _p_spi->write(MAX7219_SCAN_LIMIT); |
williamweatherholtz | 0:ef4b1297d850 | 230 | _p_spi->write(config.scan_limit); |
williamweatherholtz | 0:ef4b1297d850 | 231 | } |
williamweatherholtz | 0:ef4b1297d850 | 232 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 233 | |
williamweatherholtz | 0:ef4b1297d850 | 234 | wait_us(1); |
williamweatherholtz | 0:ef4b1297d850 | 235 | } |
williamweatherholtz | 0:ef4b1297d850 | 236 | |
williamweatherholtz | 0:ef4b1297d850 | 237 | |
williamweatherholtz | 0:ef4b1297d850 | 238 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 239 | int32_t Max7219::enable_device(uint8_t device_number) |
williamweatherholtz | 0:ef4b1297d850 | 240 | { |
williamweatherholtz | 0:ef4b1297d850 | 241 | int32_t rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 242 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 243 | |
williamweatherholtz | 0:ef4b1297d850 | 244 | if(device_number > _num_devices) |
williamweatherholtz | 0:ef4b1297d850 | 245 | { |
williamweatherholtz | 0:ef4b1297d850 | 246 | rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 247 | } |
williamweatherholtz | 0:ef4b1297d850 | 248 | else if(device_number == 0) |
williamweatherholtz | 0:ef4b1297d850 | 249 | { |
williamweatherholtz | 0:ef4b1297d850 | 250 | //device numbering starts with index 1 |
williamweatherholtz | 0:ef4b1297d850 | 251 | rtn_val = -2; |
williamweatherholtz | 0:ef4b1297d850 | 252 | } |
williamweatherholtz | 0:ef4b1297d850 | 253 | else |
williamweatherholtz | 0:ef4b1297d850 | 254 | { |
williamweatherholtz | 0:ef4b1297d850 | 255 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 256 | for(idx = _num_devices; idx > 0; idx--) |
williamweatherholtz | 0:ef4b1297d850 | 257 | { |
williamweatherholtz | 0:ef4b1297d850 | 258 | if(device_number == idx) |
williamweatherholtz | 0:ef4b1297d850 | 259 | { |
williamweatherholtz | 0:ef4b1297d850 | 260 | _p_spi->write(MAX7219_SHUTDOWN); |
williamweatherholtz | 0:ef4b1297d850 | 261 | _p_spi->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 262 | } |
williamweatherholtz | 0:ef4b1297d850 | 263 | else |
williamweatherholtz | 0:ef4b1297d850 | 264 | { |
williamweatherholtz | 0:ef4b1297d850 | 265 | _p_spi->write(MAX7219_NO_OP); |
williamweatherholtz | 0:ef4b1297d850 | 266 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 267 | } |
williamweatherholtz | 0:ef4b1297d850 | 268 | } |
williamweatherholtz | 0:ef4b1297d850 | 269 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 270 | |
williamweatherholtz | 0:ef4b1297d850 | 271 | rtn_val = 0; |
williamweatherholtz | 0:ef4b1297d850 | 272 | } |
williamweatherholtz | 0:ef4b1297d850 | 273 | |
williamweatherholtz | 0:ef4b1297d850 | 274 | return(rtn_val); |
williamweatherholtz | 0:ef4b1297d850 | 275 | } |
williamweatherholtz | 0:ef4b1297d850 | 276 | |
williamweatherholtz | 0:ef4b1297d850 | 277 | |
williamweatherholtz | 0:ef4b1297d850 | 278 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 279 | void Max7219::enable_display(void) |
williamweatherholtz | 0:ef4b1297d850 | 280 | { |
williamweatherholtz | 0:ef4b1297d850 | 281 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 282 | |
williamweatherholtz | 0:ef4b1297d850 | 283 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 284 | for(idx = 0; idx < _num_devices; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 285 | { |
williamweatherholtz | 0:ef4b1297d850 | 286 | _p_spi->write(MAX7219_SHUTDOWN); |
williamweatherholtz | 0:ef4b1297d850 | 287 | _p_spi->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 288 | } |
williamweatherholtz | 0:ef4b1297d850 | 289 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 290 | } |
williamweatherholtz | 0:ef4b1297d850 | 291 | |
williamweatherholtz | 0:ef4b1297d850 | 292 | |
williamweatherholtz | 0:ef4b1297d850 | 293 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 294 | int32_t Max7219::disable_device(uint8_t device_number) |
williamweatherholtz | 0:ef4b1297d850 | 295 | { |
williamweatherholtz | 0:ef4b1297d850 | 296 | int32_t rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 297 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 298 | |
williamweatherholtz | 0:ef4b1297d850 | 299 | if(device_number > _num_devices) |
williamweatherholtz | 0:ef4b1297d850 | 300 | { |
williamweatherholtz | 0:ef4b1297d850 | 301 | rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 302 | } |
williamweatherholtz | 0:ef4b1297d850 | 303 | else if(device_number == 0) |
williamweatherholtz | 0:ef4b1297d850 | 304 | { |
williamweatherholtz | 0:ef4b1297d850 | 305 | //device numbering starts with index 1 |
williamweatherholtz | 0:ef4b1297d850 | 306 | rtn_val = -2; |
williamweatherholtz | 0:ef4b1297d850 | 307 | } |
williamweatherholtz | 0:ef4b1297d850 | 308 | else |
williamweatherholtz | 0:ef4b1297d850 | 309 | { |
williamweatherholtz | 0:ef4b1297d850 | 310 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 311 | for(idx = _num_devices; idx > 0; idx--) |
williamweatherholtz | 0:ef4b1297d850 | 312 | { |
williamweatherholtz | 0:ef4b1297d850 | 313 | if(device_number == idx) |
williamweatherholtz | 0:ef4b1297d850 | 314 | { |
williamweatherholtz | 0:ef4b1297d850 | 315 | _p_spi->write(MAX7219_SHUTDOWN); |
williamweatherholtz | 0:ef4b1297d850 | 316 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 317 | } |
williamweatherholtz | 0:ef4b1297d850 | 318 | else |
williamweatherholtz | 0:ef4b1297d850 | 319 | { |
williamweatherholtz | 0:ef4b1297d850 | 320 | _p_spi->write(MAX7219_NO_OP); |
williamweatherholtz | 0:ef4b1297d850 | 321 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 322 | } |
williamweatherholtz | 0:ef4b1297d850 | 323 | } |
williamweatherholtz | 0:ef4b1297d850 | 324 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 325 | |
williamweatherholtz | 0:ef4b1297d850 | 326 | rtn_val = 0; |
williamweatherholtz | 0:ef4b1297d850 | 327 | } |
williamweatherholtz | 0:ef4b1297d850 | 328 | |
williamweatherholtz | 0:ef4b1297d850 | 329 | return(rtn_val); |
williamweatherholtz | 0:ef4b1297d850 | 330 | } |
williamweatherholtz | 0:ef4b1297d850 | 331 | |
williamweatherholtz | 0:ef4b1297d850 | 332 | |
williamweatherholtz | 0:ef4b1297d850 | 333 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 334 | void Max7219::disable_display(void) |
williamweatherholtz | 0:ef4b1297d850 | 335 | { |
williamweatherholtz | 0:ef4b1297d850 | 336 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 337 | |
williamweatherholtz | 0:ef4b1297d850 | 338 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 339 | for(idx = 0; idx < _num_devices; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 340 | { |
williamweatherholtz | 0:ef4b1297d850 | 341 | _p_spi->write(MAX7219_SHUTDOWN); |
williamweatherholtz | 0:ef4b1297d850 | 342 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 343 | } |
williamweatherholtz | 0:ef4b1297d850 | 344 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 345 | } |
williamweatherholtz | 0:ef4b1297d850 | 346 | |
williamweatherholtz | 0:ef4b1297d850 | 347 | |
williamweatherholtz | 0:ef4b1297d850 | 348 | |
williamweatherholtz | 0:ef4b1297d850 | 349 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 350 | int32_t Max7219::write_digit(uint8_t device_number, uint8_t digit, uint8_t data) |
williamweatherholtz | 0:ef4b1297d850 | 351 | { |
williamweatherholtz | 0:ef4b1297d850 | 352 | int32_t rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 353 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 354 | |
williamweatherholtz | 0:ef4b1297d850 | 355 | if(digit > MAX7219_DIGIT_7) |
williamweatherholtz | 0:ef4b1297d850 | 356 | { |
williamweatherholtz | 0:ef4b1297d850 | 357 | rtn_val = -3; |
williamweatherholtz | 0:ef4b1297d850 | 358 | } |
williamweatherholtz | 0:ef4b1297d850 | 359 | else if(digit < MAX7219_DIGIT_0) |
williamweatherholtz | 0:ef4b1297d850 | 360 | { |
williamweatherholtz | 0:ef4b1297d850 | 361 | rtn_val = -4; |
williamweatherholtz | 0:ef4b1297d850 | 362 | } |
williamweatherholtz | 0:ef4b1297d850 | 363 | else |
williamweatherholtz | 0:ef4b1297d850 | 364 | { |
williamweatherholtz | 0:ef4b1297d850 | 365 | if(device_number > _num_devices) |
williamweatherholtz | 0:ef4b1297d850 | 366 | { |
williamweatherholtz | 0:ef4b1297d850 | 367 | rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 368 | } |
williamweatherholtz | 0:ef4b1297d850 | 369 | else if(device_number == 0) |
williamweatherholtz | 0:ef4b1297d850 | 370 | { |
williamweatherholtz | 0:ef4b1297d850 | 371 | rtn_val = -2; |
williamweatherholtz | 0:ef4b1297d850 | 372 | } |
williamweatherholtz | 0:ef4b1297d850 | 373 | else |
williamweatherholtz | 0:ef4b1297d850 | 374 | { |
williamweatherholtz | 0:ef4b1297d850 | 375 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 376 | for(idx = _num_devices; idx > 0; idx--) |
williamweatherholtz | 0:ef4b1297d850 | 377 | { |
williamweatherholtz | 0:ef4b1297d850 | 378 | if(idx == device_number) |
williamweatherholtz | 0:ef4b1297d850 | 379 | { |
williamweatherholtz | 0:ef4b1297d850 | 380 | _p_spi->write(digit); |
williamweatherholtz | 0:ef4b1297d850 | 381 | _p_spi->write(data); |
williamweatherholtz | 0:ef4b1297d850 | 382 | } |
williamweatherholtz | 0:ef4b1297d850 | 383 | else |
williamweatherholtz | 0:ef4b1297d850 | 384 | { |
williamweatherholtz | 0:ef4b1297d850 | 385 | _p_spi->write(MAX7219_NO_OP); |
williamweatherholtz | 0:ef4b1297d850 | 386 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 387 | } |
williamweatherholtz | 0:ef4b1297d850 | 388 | } |
williamweatherholtz | 0:ef4b1297d850 | 389 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 390 | |
williamweatherholtz | 0:ef4b1297d850 | 391 | rtn_val = 0; |
williamweatherholtz | 0:ef4b1297d850 | 392 | } |
williamweatherholtz | 0:ef4b1297d850 | 393 | } |
williamweatherholtz | 0:ef4b1297d850 | 394 | |
williamweatherholtz | 0:ef4b1297d850 | 395 | return(rtn_val); |
williamweatherholtz | 0:ef4b1297d850 | 396 | } |
williamweatherholtz | 0:ef4b1297d850 | 397 | |
williamweatherholtz | 0:ef4b1297d850 | 398 | |
williamweatherholtz | 0:ef4b1297d850 | 399 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 400 | int32_t Max7219::clear_digit(uint8_t device_number, uint8_t digit) |
williamweatherholtz | 0:ef4b1297d850 | 401 | { |
williamweatherholtz | 0:ef4b1297d850 | 402 | int32_t rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 403 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 404 | |
williamweatherholtz | 0:ef4b1297d850 | 405 | if(digit > MAX7219_DIGIT_7) |
williamweatherholtz | 0:ef4b1297d850 | 406 | { |
williamweatherholtz | 0:ef4b1297d850 | 407 | rtn_val = -3; |
williamweatherholtz | 0:ef4b1297d850 | 408 | } |
williamweatherholtz | 0:ef4b1297d850 | 409 | else if(digit < MAX7219_DIGIT_0) |
williamweatherholtz | 0:ef4b1297d850 | 410 | { |
williamweatherholtz | 0:ef4b1297d850 | 411 | rtn_val = -4; |
williamweatherholtz | 0:ef4b1297d850 | 412 | } |
williamweatherholtz | 0:ef4b1297d850 | 413 | else |
williamweatherholtz | 0:ef4b1297d850 | 414 | { |
williamweatherholtz | 0:ef4b1297d850 | 415 | if(device_number > _num_devices) |
williamweatherholtz | 0:ef4b1297d850 | 416 | { |
williamweatherholtz | 0:ef4b1297d850 | 417 | rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 418 | } |
williamweatherholtz | 0:ef4b1297d850 | 419 | else if(device_number == 0) |
williamweatherholtz | 0:ef4b1297d850 | 420 | { |
williamweatherholtz | 0:ef4b1297d850 | 421 | rtn_val = -2; |
williamweatherholtz | 0:ef4b1297d850 | 422 | } |
williamweatherholtz | 0:ef4b1297d850 | 423 | else |
williamweatherholtz | 0:ef4b1297d850 | 424 | { |
williamweatherholtz | 0:ef4b1297d850 | 425 | _p_cs->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 426 | for(idx = _num_devices; idx > 0; idx--) |
williamweatherholtz | 0:ef4b1297d850 | 427 | { |
williamweatherholtz | 0:ef4b1297d850 | 428 | if(idx == device_number) |
williamweatherholtz | 0:ef4b1297d850 | 429 | { |
williamweatherholtz | 0:ef4b1297d850 | 430 | _p_spi->write(digit); |
williamweatherholtz | 0:ef4b1297d850 | 431 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 432 | } |
williamweatherholtz | 0:ef4b1297d850 | 433 | else |
williamweatherholtz | 0:ef4b1297d850 | 434 | { |
williamweatherholtz | 0:ef4b1297d850 | 435 | _p_spi->write(MAX7219_NO_OP); |
williamweatherholtz | 0:ef4b1297d850 | 436 | _p_spi->write(0); |
williamweatherholtz | 0:ef4b1297d850 | 437 | } |
williamweatherholtz | 0:ef4b1297d850 | 438 | } |
williamweatherholtz | 0:ef4b1297d850 | 439 | _p_cs->write(1); |
williamweatherholtz | 0:ef4b1297d850 | 440 | |
williamweatherholtz | 0:ef4b1297d850 | 441 | rtn_val = 0; |
williamweatherholtz | 0:ef4b1297d850 | 442 | } |
williamweatherholtz | 0:ef4b1297d850 | 443 | } |
williamweatherholtz | 0:ef4b1297d850 | 444 | |
williamweatherholtz | 0:ef4b1297d850 | 445 | return(rtn_val); |
williamweatherholtz | 0:ef4b1297d850 | 446 | } |
williamweatherholtz | 0:ef4b1297d850 | 447 | |
williamweatherholtz | 0:ef4b1297d850 | 448 | |
williamweatherholtz | 0:ef4b1297d850 | 449 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 450 | int32_t Max7219::device_all_on(uint8_t device_number) |
williamweatherholtz | 0:ef4b1297d850 | 451 | { |
williamweatherholtz | 0:ef4b1297d850 | 452 | int32_t rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 453 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 454 | |
williamweatherholtz | 0:ef4b1297d850 | 455 | if(device_number > _num_devices) |
williamweatherholtz | 0:ef4b1297d850 | 456 | { |
williamweatherholtz | 0:ef4b1297d850 | 457 | rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 458 | } |
williamweatherholtz | 0:ef4b1297d850 | 459 | else if(device_number == 0) |
williamweatherholtz | 0:ef4b1297d850 | 460 | { |
williamweatherholtz | 0:ef4b1297d850 | 461 | rtn_val = -2; |
williamweatherholtz | 0:ef4b1297d850 | 462 | } |
williamweatherholtz | 0:ef4b1297d850 | 463 | else |
williamweatherholtz | 0:ef4b1297d850 | 464 | { |
williamweatherholtz | 0:ef4b1297d850 | 465 | rtn_val = 0; |
williamweatherholtz | 0:ef4b1297d850 | 466 | |
williamweatherholtz | 0:ef4b1297d850 | 467 | //writes every digit of given device to 0xFF |
williamweatherholtz | 0:ef4b1297d850 | 468 | for(idx = 0; idx < 8; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 469 | { |
williamweatherholtz | 0:ef4b1297d850 | 470 | if(rtn_val == 0) |
williamweatherholtz | 0:ef4b1297d850 | 471 | { |
williamweatherholtz | 0:ef4b1297d850 | 472 | rtn_val = write_digit(device_number, (idx + 1), 0xFF); |
williamweatherholtz | 0:ef4b1297d850 | 473 | } |
williamweatherholtz | 0:ef4b1297d850 | 474 | } |
williamweatherholtz | 0:ef4b1297d850 | 475 | } |
williamweatherholtz | 0:ef4b1297d850 | 476 | |
williamweatherholtz | 0:ef4b1297d850 | 477 | return(rtn_val); |
williamweatherholtz | 0:ef4b1297d850 | 478 | } |
williamweatherholtz | 0:ef4b1297d850 | 479 | |
williamweatherholtz | 0:ef4b1297d850 | 480 | |
williamweatherholtz | 0:ef4b1297d850 | 481 | //********************************************************************* |
williamweatherholtz | 0:ef4b1297d850 | 482 | int32_t Max7219::device_all_off(uint8_t device_number) |
williamweatherholtz | 0:ef4b1297d850 | 483 | { |
williamweatherholtz | 0:ef4b1297d850 | 484 | int32_t rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 485 | uint8_t idx = 0; |
williamweatherholtz | 0:ef4b1297d850 | 486 | |
williamweatherholtz | 0:ef4b1297d850 | 487 | if(device_number > _num_devices) |
williamweatherholtz | 0:ef4b1297d850 | 488 | { |
williamweatherholtz | 0:ef4b1297d850 | 489 | rtn_val = -1; |
williamweatherholtz | 0:ef4b1297d850 | 490 | } |
williamweatherholtz | 0:ef4b1297d850 | 491 | else if(device_number == 0) |
williamweatherholtz | 0:ef4b1297d850 | 492 | { |
williamweatherholtz | 0:ef4b1297d850 | 493 | rtn_val = -2; |
williamweatherholtz | 0:ef4b1297d850 | 494 | } |
williamweatherholtz | 0:ef4b1297d850 | 495 | else |
williamweatherholtz | 0:ef4b1297d850 | 496 | { |
williamweatherholtz | 0:ef4b1297d850 | 497 | rtn_val = 0; |
williamweatherholtz | 0:ef4b1297d850 | 498 | |
williamweatherholtz | 0:ef4b1297d850 | 499 | //writes every digit of given device to 0 |
williamweatherholtz | 0:ef4b1297d850 | 500 | for(idx = 0; idx < 8; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 501 | { |
williamweatherholtz | 0:ef4b1297d850 | 502 | if(rtn_val == 0) |
williamweatherholtz | 0:ef4b1297d850 | 503 | { |
williamweatherholtz | 0:ef4b1297d850 | 504 | rtn_val = write_digit(device_number, (idx + 1), 0); |
williamweatherholtz | 0:ef4b1297d850 | 505 | } |
williamweatherholtz | 0:ef4b1297d850 | 506 | } |
williamweatherholtz | 0:ef4b1297d850 | 507 | } |
williamweatherholtz | 0:ef4b1297d850 | 508 | |
williamweatherholtz | 0:ef4b1297d850 | 509 | return(rtn_val); |
williamweatherholtz | 0:ef4b1297d850 | 510 | } |
williamweatherholtz | 0:ef4b1297d850 | 511 | |
williamweatherholtz | 0:ef4b1297d850 | 512 | |
williamweatherholtz | 0:ef4b1297d850 | 513 | void Max7219::display_all_on(void) |
williamweatherholtz | 0:ef4b1297d850 | 514 | { |
williamweatherholtz | 0:ef4b1297d850 | 515 | uint8_t idx, idy; |
williamweatherholtz | 0:ef4b1297d850 | 516 | |
williamweatherholtz | 0:ef4b1297d850 | 517 | //writes every digit of every device to 0xFF |
williamweatherholtz | 0:ef4b1297d850 | 518 | for(idx = 0; idx < _num_devices; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 519 | { |
williamweatherholtz | 0:ef4b1297d850 | 520 | for(idy = 0; idy < MAX7219_DIGIT_7; idy++) |
williamweatherholtz | 0:ef4b1297d850 | 521 | { |
williamweatherholtz | 0:ef4b1297d850 | 522 | write_digit((idx + 1), (idy + 1), 0xFF); |
williamweatherholtz | 0:ef4b1297d850 | 523 | } |
williamweatherholtz | 0:ef4b1297d850 | 524 | } |
williamweatherholtz | 0:ef4b1297d850 | 525 | } |
williamweatherholtz | 0:ef4b1297d850 | 526 | |
williamweatherholtz | 0:ef4b1297d850 | 527 | |
williamweatherholtz | 0:ef4b1297d850 | 528 | void Max7219::display_all_off(void) |
williamweatherholtz | 0:ef4b1297d850 | 529 | { |
williamweatherholtz | 0:ef4b1297d850 | 530 | uint8_t idx, idy; |
williamweatherholtz | 0:ef4b1297d850 | 531 | |
williamweatherholtz | 0:ef4b1297d850 | 532 | //writes every digit of every device to 0 |
williamweatherholtz | 0:ef4b1297d850 | 533 | for(idx = 0; idx < _num_devices; idx++) |
williamweatherholtz | 0:ef4b1297d850 | 534 | { |
williamweatherholtz | 0:ef4b1297d850 | 535 | for(idy = 0; idy < MAX7219_DIGIT_7; idy++) |
williamweatherholtz | 0:ef4b1297d850 | 536 | { |
williamweatherholtz | 0:ef4b1297d850 | 537 | write_digit((idx + 1), (idy + 1), 0); |
williamweatherholtz | 0:ef4b1297d850 | 538 | } |
williamweatherholtz | 0:ef4b1297d850 | 539 | } |
williamweatherholtz | 0:ef4b1297d850 | 540 | } |
williamweatherholtz | 0:ef4b1297d850 | 541 |