Neil Thiessen / PCA9955

A feature complete driver for the PCA9952/55 LED driver from NXP.

Dependents:   PCA9955_HelloWorld

PCA9955.cpp@10:c8c96c894ec6, 2014-05-02 (annotated)

Committer:
neilt6
Date:
Fri May 02 17:29:33 2014 +0000
Revision:
10:c8c96c894ec6
Parent:
9:a9f91f91633b
Child:
11:dbf20a128eb6
Added an I2C frequency argument to the constructor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
neilt6 0:7b3cbb5a53b8 1 /* PCA9955 Driver Library
neilt6 0:7b3cbb5a53b8 2 * Copyright (c) 2013 Neil Thiessen
neilt6 0:7b3cbb5a53b8 3 *
neilt6 0:7b3cbb5a53b8 4 * Licensed under the Apache License, Version 2.0 (the "License");
neilt6 0:7b3cbb5a53b8 5 * you may not use this file except in compliance with the License.
neilt6 0:7b3cbb5a53b8 6 * You may obtain a copy of the License at
neilt6 0:7b3cbb5a53b8 7 *
neilt6 0:7b3cbb5a53b8 8 * http://www.apache.org/licenses/LICENSE-2.0
neilt6 0:7b3cbb5a53b8 9 *
neilt6 0:7b3cbb5a53b8 10 * Unless required by applicable law or agreed to in writing, software
neilt6 0:7b3cbb5a53b8 11 * distributed under the License is distributed on an "AS IS" BASIS,
neilt6 0:7b3cbb5a53b8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
neilt6 0:7b3cbb5a53b8 13 * See the License for the specific language governing permissions and
neilt6 0:7b3cbb5a53b8 14 * limitations under the License.
neilt6 0:7b3cbb5a53b8 15 */
neilt6 0:7b3cbb5a53b8 16
neilt6 0:7b3cbb5a53b8 17 #include "PCA9955.h"
neilt6 0:7b3cbb5a53b8 18
neilt6 10:c8c96c894ec6 19 PCA9955::PCA9955(PinName sda, PinName scl, Address addr, int hz) : m_I2C(sda, scl), m_ADDR((int)addr)
neilt6 0:7b3cbb5a53b8 20 {
neilt6 10:c8c96c894ec6 21 //Set the I2C bus frequency
neilt6 10:c8c96c894ec6 22 m_I2C.frequency(hz);
neilt6 0:7b3cbb5a53b8 23 }
neilt6 0:7b3cbb5a53b8 24
neilt6 1:016f916c5579 25 bool PCA9955::open()
neilt6 0:7b3cbb5a53b8 26 {
neilt6 0:7b3cbb5a53b8 27 //Probe for the PCA9952/55 using a Zero Length Transfer
neilt6 1:016f916c5579 28 if (!m_I2C.write(m_ADDR, NULL, 0)) {
neilt6 0:7b3cbb5a53b8 29 //Return success
neilt6 0:7b3cbb5a53b8 30 return true;
neilt6 0:7b3cbb5a53b8 31 } else {
neilt6 0:7b3cbb5a53b8 32 //Return failure
neilt6 0:7b3cbb5a53b8 33 return false;
neilt6 0:7b3cbb5a53b8 34 }
neilt6 0:7b3cbb5a53b8 35 }
neilt6 0:7b3cbb5a53b8 36
neilt6 1:016f916c5579 37 void PCA9955::reset()
neilt6 0:7b3cbb5a53b8 38 {
neilt6 0:7b3cbb5a53b8 39 //The SWRST magic data byte
neilt6 0:7b3cbb5a53b8 40 char data = 0x06;
neilt6 0:7b3cbb5a53b8 41
neilt6 0:7b3cbb5a53b8 42 //Issue the SWRST call to the General Call address
neilt6 0:7b3cbb5a53b8 43 m_I2C.write(0x00, &data, 1);
neilt6 0:7b3cbb5a53b8 44 }
neilt6 0:7b3cbb5a53b8 45
neilt6 1:016f916c5579 46 bool PCA9955::allCallEnabled()
neilt6 0:7b3cbb5a53b8 47 {
neilt6 0:7b3cbb5a53b8 48 //Read the 8-bit register value
neilt6 0:7b3cbb5a53b8 49 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 50
neilt6 0:7b3cbb5a53b8 51 //Return the status of the ALLCALL bit
neilt6 0:7b3cbb5a53b8 52 if (value & (1 << 0))
neilt6 0:7b3cbb5a53b8 53 return true;
neilt6 0:7b3cbb5a53b8 54 else
neilt6 0:7b3cbb5a53b8 55 return false;
neilt6 0:7b3cbb5a53b8 56 }
neilt6 0:7b3cbb5a53b8 57
neilt6 0:7b3cbb5a53b8 58 void PCA9955::allCallEnabled(bool enabled)
neilt6 0:7b3cbb5a53b8 59 {
neilt6 0:7b3cbb5a53b8 60 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 61 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 62
neilt6 0:7b3cbb5a53b8 63 //Set or clear the ALLCALL bit
neilt6 0:7b3cbb5a53b8 64 if (enabled)
neilt6 0:7b3cbb5a53b8 65 value |= (1 << 0);
neilt6 0:7b3cbb5a53b8 66 else
neilt6 0:7b3cbb5a53b8 67 value &= ~(1 << 0);
neilt6 0:7b3cbb5a53b8 68
neilt6 0:7b3cbb5a53b8 69 //Write the value back out
neilt6 7:7dd3cc73e873 70 write(m_ADDR, REG_MODE1, value);
neilt6 0:7b3cbb5a53b8 71 }
neilt6 0:7b3cbb5a53b8 72
neilt6 1:016f916c5579 73 bool PCA9955::subCall3Enabled()
neilt6 0:7b3cbb5a53b8 74 {
neilt6 0:7b3cbb5a53b8 75 //Read the 8-bit register value
neilt6 0:7b3cbb5a53b8 76 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 77
neilt6 0:7b3cbb5a53b8 78 //Return the status of the SUB3 bit
neilt6 0:7b3cbb5a53b8 79 if (value & (1 << 1))
neilt6 0:7b3cbb5a53b8 80 return true;
neilt6 0:7b3cbb5a53b8 81 else
neilt6 0:7b3cbb5a53b8 82 return false;
neilt6 0:7b3cbb5a53b8 83 }
neilt6 0:7b3cbb5a53b8 84
neilt6 0:7b3cbb5a53b8 85 void PCA9955::subCall3Enabled(bool enabled)
neilt6 0:7b3cbb5a53b8 86 {
neilt6 0:7b3cbb5a53b8 87 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 88 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 89
neilt6 0:7b3cbb5a53b8 90 //Set or clear the SUB3 bit
neilt6 0:7b3cbb5a53b8 91 if (enabled)
neilt6 0:7b3cbb5a53b8 92 value |= (1 << 1);
neilt6 0:7b3cbb5a53b8 93 else
neilt6 0:7b3cbb5a53b8 94 value &= ~(1 << 1);
neilt6 0:7b3cbb5a53b8 95
neilt6 0:7b3cbb5a53b8 96 //Write the value back out
neilt6 7:7dd3cc73e873 97 write(m_ADDR, REG_MODE1, value);
neilt6 0:7b3cbb5a53b8 98 }
neilt6 0:7b3cbb5a53b8 99
neilt6 1:016f916c5579 100 bool PCA9955::subCall2Enabled()
neilt6 0:7b3cbb5a53b8 101 {
neilt6 0:7b3cbb5a53b8 102 //Read the 8-bit register value
neilt6 0:7b3cbb5a53b8 103 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 104
neilt6 0:7b3cbb5a53b8 105 //Return the status of the SUB2 bit
neilt6 0:7b3cbb5a53b8 106 if (value & (1 << 2))
neilt6 0:7b3cbb5a53b8 107 return true;
neilt6 0:7b3cbb5a53b8 108 else
neilt6 0:7b3cbb5a53b8 109 return false;
neilt6 0:7b3cbb5a53b8 110 }
neilt6 0:7b3cbb5a53b8 111
neilt6 0:7b3cbb5a53b8 112 void PCA9955::subCall2Enabled(bool enabled)
neilt6 0:7b3cbb5a53b8 113 {
neilt6 0:7b3cbb5a53b8 114 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 115 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 116
neilt6 0:7b3cbb5a53b8 117 //Set or clear the SUB2 bit
neilt6 0:7b3cbb5a53b8 118 if (enabled)
neilt6 0:7b3cbb5a53b8 119 value |= (1 << 2);
neilt6 0:7b3cbb5a53b8 120 else
neilt6 0:7b3cbb5a53b8 121 value &= ~(1 << 2);
neilt6 0:7b3cbb5a53b8 122
neilt6 0:7b3cbb5a53b8 123 //Write the value back out
neilt6 7:7dd3cc73e873 124 write(m_ADDR, REG_MODE1, value);
neilt6 0:7b3cbb5a53b8 125 }
neilt6 0:7b3cbb5a53b8 126
neilt6 1:016f916c5579 127 bool PCA9955::subCall1Enabled()
neilt6 0:7b3cbb5a53b8 128 {
neilt6 0:7b3cbb5a53b8 129 //Read the 8-bit register value
neilt6 0:7b3cbb5a53b8 130 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 131
neilt6 0:7b3cbb5a53b8 132 //Return the status of the SUB1 bit
neilt6 0:7b3cbb5a53b8 133 if (value & (1 << 3))
neilt6 0:7b3cbb5a53b8 134 return true;
neilt6 0:7b3cbb5a53b8 135 else
neilt6 0:7b3cbb5a53b8 136 return false;
neilt6 0:7b3cbb5a53b8 137 }
neilt6 0:7b3cbb5a53b8 138
neilt6 0:7b3cbb5a53b8 139 void PCA9955::subCall1Enabled(bool enabled)
neilt6 0:7b3cbb5a53b8 140 {
neilt6 0:7b3cbb5a53b8 141 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 142 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 143
neilt6 0:7b3cbb5a53b8 144 //Set or clear the SUB1 bit
neilt6 0:7b3cbb5a53b8 145 if (enabled)
neilt6 0:7b3cbb5a53b8 146 value |= (1 << 3);
neilt6 0:7b3cbb5a53b8 147 else
neilt6 0:7b3cbb5a53b8 148 value &= ~(1 << 3);
neilt6 0:7b3cbb5a53b8 149
neilt6 0:7b3cbb5a53b8 150 //Write the value back out
neilt6 7:7dd3cc73e873 151 write(m_ADDR, REG_MODE1, value);
neilt6 0:7b3cbb5a53b8 152 }
neilt6 0:7b3cbb5a53b8 153
neilt6 1:016f916c5579 154 PCA9955::PowerMode PCA9955::powerMode()
neilt6 0:7b3cbb5a53b8 155 {
neilt6 0:7b3cbb5a53b8 156 //Read the 8-bit register value
neilt6 0:7b3cbb5a53b8 157 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 158
neilt6 0:7b3cbb5a53b8 159 //Return the status of the SLEEP bit
neilt6 0:7b3cbb5a53b8 160 if (value & (1 << 4))
neilt6 0:7b3cbb5a53b8 161 return POWER_SHUTDOWN;
neilt6 0:7b3cbb5a53b8 162 else
neilt6 0:7b3cbb5a53b8 163 return POWER_NORMAL;
neilt6 0:7b3cbb5a53b8 164 }
neilt6 0:7b3cbb5a53b8 165
neilt6 0:7b3cbb5a53b8 166 void PCA9955::powerMode(PowerMode mode)
neilt6 0:7b3cbb5a53b8 167 {
neilt6 0:7b3cbb5a53b8 168 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 169 char value = read(REG_MODE1);
neilt6 0:7b3cbb5a53b8 170
neilt6 0:7b3cbb5a53b8 171 //Set or clear the SLEEP bit
neilt6 0:7b3cbb5a53b8 172 if (mode == POWER_SHUTDOWN)
neilt6 0:7b3cbb5a53b8 173 value |= (1 << 4);
neilt6 0:7b3cbb5a53b8 174 else
neilt6 0:7b3cbb5a53b8 175 value &= ~(1 << 4);
neilt6 0:7b3cbb5a53b8 176
neilt6 0:7b3cbb5a53b8 177 //Write the value back out
neilt6 7:7dd3cc73e873 178 write(m_ADDR, REG_MODE1, value);
neilt6 0:7b3cbb5a53b8 179 }
neilt6 0:7b3cbb5a53b8 180
neilt6 1:016f916c5579 181 PCA9955::OutputChangeMode PCA9955::outputChangeMode()
neilt6 0:7b3cbb5a53b8 182 {
neilt6 0:7b3cbb5a53b8 183 //Read the 8-bit register value
neilt6 0:7b3cbb5a53b8 184 char value = read(REG_MODE2);
neilt6 0:7b3cbb5a53b8 185
neilt6 0:7b3cbb5a53b8 186 //Return the status of the OCH bit
neilt6 0:7b3cbb5a53b8 187 if (value & (1 << 3))
neilt6 0:7b3cbb5a53b8 188 return OUTPUT_CHANGE_ON_ACK;
neilt6 0:7b3cbb5a53b8 189 else
neilt6 0:7b3cbb5a53b8 190 return OUTPUT_CHANGE_ON_STOP;
neilt6 0:7b3cbb5a53b8 191 }
neilt6 0:7b3cbb5a53b8 192
neilt6 0:7b3cbb5a53b8 193 void PCA9955::outputChangeMode(OutputChangeMode mode)
neilt6 0:7b3cbb5a53b8 194 {
neilt6 0:7b3cbb5a53b8 195 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 196 char value = read(REG_MODE2);
neilt6 0:7b3cbb5a53b8 197
neilt6 0:7b3cbb5a53b8 198 //Set or clear the OCH bit
neilt6 0:7b3cbb5a53b8 199 if (mode == OUTPUT_CHANGE_ON_ACK)
neilt6 0:7b3cbb5a53b8 200 value |= (1 << 3);
neilt6 0:7b3cbb5a53b8 201 else
neilt6 0:7b3cbb5a53b8 202 value &= ~(1 << 3);
neilt6 0:7b3cbb5a53b8 203
neilt6 0:7b3cbb5a53b8 204 //Write the value back out
neilt6 7:7dd3cc73e873 205 write(m_ADDR, REG_MODE2, value);
neilt6 0:7b3cbb5a53b8 206 }
neilt6 0:7b3cbb5a53b8 207
neilt6 1:016f916c5579 208 PCA9955::GroupMode PCA9955::groupMode()
neilt6 0:7b3cbb5a53b8 209 {
neilt6 0:7b3cbb5a53b8 210 //Read the 8-bit register value
neilt6 0:7b3cbb5a53b8 211 char value = read(REG_MODE2);
neilt6 0:7b3cbb5a53b8 212
neilt6 0:7b3cbb5a53b8 213 //Return the status of the DMBLNK bit
neilt6 0:7b3cbb5a53b8 214 if (value & (1 << 5))
neilt6 0:7b3cbb5a53b8 215 return GROUP_BLINKING;
neilt6 0:7b3cbb5a53b8 216 else
neilt6 0:7b3cbb5a53b8 217 return GROUP_DIMMING;
neilt6 0:7b3cbb5a53b8 218 }
neilt6 0:7b3cbb5a53b8 219
neilt6 0:7b3cbb5a53b8 220 void PCA9955::groupMode(GroupMode mode)
neilt6 0:7b3cbb5a53b8 221 {
neilt6 0:7b3cbb5a53b8 222 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 223 char value = read(REG_MODE2);
neilt6 0:7b3cbb5a53b8 224
neilt6 0:7b3cbb5a53b8 225 //Set or clear the DMBLNK bit
neilt6 0:7b3cbb5a53b8 226 if (mode == GROUP_BLINKING)
neilt6 0:7b3cbb5a53b8 227 value |= (1 << 5);
neilt6 0:7b3cbb5a53b8 228 else
neilt6 0:7b3cbb5a53b8 229 value &= ~(1 << 5);
neilt6 0:7b3cbb5a53b8 230
neilt6 0:7b3cbb5a53b8 231 //Write the value back out
neilt6 7:7dd3cc73e873 232 write(m_ADDR, REG_MODE2, value);
neilt6 0:7b3cbb5a53b8 233 }
neilt6 0:7b3cbb5a53b8 234
neilt6 1:016f916c5579 235 bool PCA9955::overTemp()
neilt6 0:7b3cbb5a53b8 236 {
neilt6 0:7b3cbb5a53b8 237 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 238 char value = read(REG_MODE2);
neilt6 0:7b3cbb5a53b8 239
neilt6 0:7b3cbb5a53b8 240 //Return the status of the OVERTEMP bit
neilt6 0:7b3cbb5a53b8 241 if (value & (1 << 7))
neilt6 0:7b3cbb5a53b8 242 return true;
neilt6 0:7b3cbb5a53b8 243 else
neilt6 0:7b3cbb5a53b8 244 return false;
neilt6 0:7b3cbb5a53b8 245 }
neilt6 0:7b3cbb5a53b8 246
neilt6 0:7b3cbb5a53b8 247 PCA9955::OutputState PCA9955::outputState(Output output)
neilt6 0:7b3cbb5a53b8 248 {
neilt6 0:7b3cbb5a53b8 249 char value;
neilt6 0:7b3cbb5a53b8 250 char reg;
neilt6 0:7b3cbb5a53b8 251
neilt6 0:7b3cbb5a53b8 252 //Determine which register to read
neilt6 0:7b3cbb5a53b8 253 if (output < 4) {
neilt6 0:7b3cbb5a53b8 254 reg = REG_LEDOUT0;
neilt6 0:7b3cbb5a53b8 255 } else if (output < 8) {
neilt6 0:7b3cbb5a53b8 256 output = (Output)(output - 4);
neilt6 0:7b3cbb5a53b8 257 reg = REG_LEDOUT1;
neilt6 0:7b3cbb5a53b8 258 } else if (output < 12) {
neilt6 0:7b3cbb5a53b8 259 output = (Output)(output - 8);
neilt6 0:7b3cbb5a53b8 260 reg = REG_LEDOUT2;
neilt6 0:7b3cbb5a53b8 261 } else {
neilt6 0:7b3cbb5a53b8 262 output = (Output)(output - 12);
neilt6 0:7b3cbb5a53b8 263 reg = REG_LEDOUT3;
neilt6 0:7b3cbb5a53b8 264 }
neilt6 0:7b3cbb5a53b8 265
neilt6 0:7b3cbb5a53b8 266 //Read the 8-bit register value
neilt6 0:7b3cbb5a53b8 267 value = read(reg);
neilt6 0:7b3cbb5a53b8 268
neilt6 0:7b3cbb5a53b8 269 //Shift and mask the other output states
neilt6 0:7b3cbb5a53b8 270 value = (value >> (output * 2)) & 0x03;
neilt6 0:7b3cbb5a53b8 271
neilt6 0:7b3cbb5a53b8 272 //Return the selected output's state
neilt6 0:7b3cbb5a53b8 273 if (value == 0)
neilt6 0:7b3cbb5a53b8 274 return OUTPUT_OFF;
neilt6 0:7b3cbb5a53b8 275 else if (value == 1)
neilt6 0:7b3cbb5a53b8 276 return OUTPUT_ON;
neilt6 0:7b3cbb5a53b8 277 else if (value == 2)
neilt6 0:7b3cbb5a53b8 278 return OUTPUT_PWM;
neilt6 0:7b3cbb5a53b8 279 else
neilt6 0:7b3cbb5a53b8 280 return OUTPUT_PWM_GRPPWM;
neilt6 0:7b3cbb5a53b8 281 }
neilt6 0:7b3cbb5a53b8 282
neilt6 0:7b3cbb5a53b8 283 void PCA9955::outputState(Output output, OutputState state)
neilt6 0:7b3cbb5a53b8 284 {
neilt6 0:7b3cbb5a53b8 285 char value;
neilt6 0:7b3cbb5a53b8 286 char reg;
neilt6 0:7b3cbb5a53b8 287
neilt6 0:7b3cbb5a53b8 288 //Determine which register to read
neilt6 0:7b3cbb5a53b8 289 if (output < 4) {
neilt6 0:7b3cbb5a53b8 290 reg = REG_LEDOUT0;
neilt6 0:7b3cbb5a53b8 291 } else if (output < 8) {
neilt6 0:7b3cbb5a53b8 292 output = (Output)(output - 4);
neilt6 0:7b3cbb5a53b8 293 reg = REG_LEDOUT1;
neilt6 0:7b3cbb5a53b8 294 } else if (output < 12) {
neilt6 0:7b3cbb5a53b8 295 output = (Output)(output - 8);
neilt6 0:7b3cbb5a53b8 296 reg = REG_LEDOUT2;
neilt6 0:7b3cbb5a53b8 297 } else {
neilt6 0:7b3cbb5a53b8 298 output = (Output)(output - 12);
neilt6 0:7b3cbb5a53b8 299 reg = REG_LEDOUT3;
neilt6 0:7b3cbb5a53b8 300 }
neilt6 0:7b3cbb5a53b8 301
neilt6 0:7b3cbb5a53b8 302 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 303 value = read(reg);
neilt6 0:7b3cbb5a53b8 304
neilt6 0:7b3cbb5a53b8 305 //Mask off the old output state (also turns the output off)
neilt6 0:7b3cbb5a53b8 306 value &= ~(0x03 << (output * 2));
neilt6 0:7b3cbb5a53b8 307
neilt6 0:7b3cbb5a53b8 308 //Add the new output state
neilt6 0:7b3cbb5a53b8 309 if (state == OUTPUT_ON)
neilt6 0:7b3cbb5a53b8 310 value |= (1 << (output * 2));
neilt6 0:7b3cbb5a53b8 311 else if (state == OUTPUT_PWM)
neilt6 0:7b3cbb5a53b8 312 value |= (2 << (output * 2));
neilt6 0:7b3cbb5a53b8 313 else if (state == OUTPUT_PWM_GRPPWM)
neilt6 0:7b3cbb5a53b8 314 value |= (3 << (output * 2));
neilt6 0:7b3cbb5a53b8 315
neilt6 0:7b3cbb5a53b8 316 //Write the value back out
neilt6 7:7dd3cc73e873 317 write(m_ADDR, reg, value);
neilt6 0:7b3cbb5a53b8 318 }
neilt6 0:7b3cbb5a53b8 319
neilt6 1:016f916c5579 320 float PCA9955::groupDuty()
neilt6 0:7b3cbb5a53b8 321 {
neilt6 0:7b3cbb5a53b8 322 //Return the value as a float
neilt6 9:a9f91f91633b 323 return groupDuty_char() / 255.0;
neilt6 0:7b3cbb5a53b8 324 }
neilt6 0:7b3cbb5a53b8 325
neilt6 7:7dd3cc73e873 326 void PCA9955::groupDuty(float duty, int altAddr)
neilt6 0:7b3cbb5a53b8 327 {
neilt6 0:7b3cbb5a53b8 328 //Range check the value
neilt6 9:a9f91f91633b 329 if (duty < 0.0)
neilt6 9:a9f91f91633b 330 duty = 0.0;
neilt6 9:a9f91f91633b 331 if (duty > 1.0)
neilt6 9:a9f91f91633b 332 duty = 1.0;
neilt6 0:7b3cbb5a53b8 333
neilt6 0:7b3cbb5a53b8 334 //Convert the value to a char and write it
neilt6 9:a9f91f91633b 335 groupDuty_char((char)(duty * 255.0), altAddr);
neilt6 0:7b3cbb5a53b8 336 }
neilt6 0:7b3cbb5a53b8 337
neilt6 1:016f916c5579 338 char PCA9955::groupDuty_char()
neilt6 0:7b3cbb5a53b8 339 {
neilt6 0:7b3cbb5a53b8 340 //Return the 8-bit register value
neilt6 0:7b3cbb5a53b8 341 return read(REG_GRPPWM);
neilt6 0:7b3cbb5a53b8 342 }
neilt6 0:7b3cbb5a53b8 343
neilt6 7:7dd3cc73e873 344 void PCA9955::groupDuty_char(char duty, int altAddr)
neilt6 0:7b3cbb5a53b8 345 {
neilt6 0:7b3cbb5a53b8 346 //Write the new 8-bit register value
neilt6 7:7dd3cc73e873 347 write((altAddr == NULL) ? m_ADDR : altAddr, REG_GRPPWM, duty);
neilt6 0:7b3cbb5a53b8 348 }
neilt6 0:7b3cbb5a53b8 349
neilt6 1:016f916c5579 350 float PCA9955::groupBlinkPeriod()
neilt6 0:7b3cbb5a53b8 351 {
neilt6 0:7b3cbb5a53b8 352 //Read the 8-bit register value
neilt6 0:7b3cbb5a53b8 353 char value = groupBlinkPeriod_char();
neilt6 0:7b3cbb5a53b8 354
neilt6 0:7b3cbb5a53b8 355 //Return the period in seconds
neilt6 0:7b3cbb5a53b8 356 if (value == 0x00)
neilt6 9:a9f91f91633b 357 return 0.067;
neilt6 0:7b3cbb5a53b8 358 else if (value == 0xFF)
neilt6 9:a9f91f91633b 359 return 16.8;
neilt6 0:7b3cbb5a53b8 360 else
neilt6 9:a9f91f91633b 361 return (value + 1) / 15.26;
neilt6 0:7b3cbb5a53b8 362 }
neilt6 0:7b3cbb5a53b8 363
neilt6 7:7dd3cc73e873 364 void PCA9955::groupBlinkPeriod(float period, int altAddr)
neilt6 0:7b3cbb5a53b8 365 {
neilt6 0:7b3cbb5a53b8 366 char value = 0;
neilt6 0:7b3cbb5a53b8 367
neilt6 0:7b3cbb5a53b8 368 //Do a smart conversion
neilt6 9:a9f91f91633b 369 if (period > 0.067) {
neilt6 9:a9f91f91633b 370 if (period < 16.8)
neilt6 9:a9f91f91633b 371 value = (char)((period * 15.26) - 1);
neilt6 0:7b3cbb5a53b8 372 else
neilt6 0:7b3cbb5a53b8 373 value = 0xFF;
neilt6 0:7b3cbb5a53b8 374 }
neilt6 0:7b3cbb5a53b8 375
neilt6 0:7b3cbb5a53b8 376 //Write the new 8-bit register value
neilt6 7:7dd3cc73e873 377 groupBlinkPeriod_char(value, altAddr);
neilt6 0:7b3cbb5a53b8 378 }
neilt6 0:7b3cbb5a53b8 379
neilt6 1:016f916c5579 380 char PCA9955::groupBlinkPeriod_char()
neilt6 0:7b3cbb5a53b8 381 {
neilt6 0:7b3cbb5a53b8 382 //Return the 8-bit register value
neilt6 0:7b3cbb5a53b8 383 return read(REG_GRPFREQ);
neilt6 0:7b3cbb5a53b8 384 }
neilt6 0:7b3cbb5a53b8 385
neilt6 7:7dd3cc73e873 386 void PCA9955::groupBlinkPeriod_char(char period, int altAddr)
neilt6 0:7b3cbb5a53b8 387 {
neilt6 0:7b3cbb5a53b8 388 //Write the new 8-bit register value
neilt6 7:7dd3cc73e873 389 write((altAddr == NULL) ? m_ADDR : altAddr, REG_GRPFREQ, period);
neilt6 0:7b3cbb5a53b8 390 }
neilt6 0:7b3cbb5a53b8 391
neilt6 0:7b3cbb5a53b8 392 float PCA9955::outputDuty(Output output)
neilt6 0:7b3cbb5a53b8 393 {
neilt6 0:7b3cbb5a53b8 394 //Return the value as a float
neilt6 9:a9f91f91633b 395 return outputDuty_char(output) / 255.0;
neilt6 0:7b3cbb5a53b8 396 }
neilt6 0:7b3cbb5a53b8 397
neilt6 7:7dd3cc73e873 398 void PCA9955::outputDuty(Output output, float duty, int altAddr)
neilt6 0:7b3cbb5a53b8 399 {
neilt6 0:7b3cbb5a53b8 400 //Range check the value
neilt6 9:a9f91f91633b 401 if (duty < 0.0)
neilt6 9:a9f91f91633b 402 duty = 0.0;
neilt6 9:a9f91f91633b 403 if (duty > 1.0)
neilt6 9:a9f91f91633b 404 duty = 1.0;
neilt6 0:7b3cbb5a53b8 405
neilt6 0:7b3cbb5a53b8 406 //Convert the value to a char and write it
neilt6 9:a9f91f91633b 407 outputDuty_char(output, (char)(duty * 255.0), altAddr);
neilt6 0:7b3cbb5a53b8 408 }
neilt6 0:7b3cbb5a53b8 409
neilt6 0:7b3cbb5a53b8 410 char PCA9955::outputDuty_char(Output output)
neilt6 0:7b3cbb5a53b8 411 {
neilt6 0:7b3cbb5a53b8 412 //Return the 8-bit register value
neilt6 0:7b3cbb5a53b8 413 return read(REG_PWM0 + (char)output);
neilt6 0:7b3cbb5a53b8 414 }
neilt6 0:7b3cbb5a53b8 415
neilt6 7:7dd3cc73e873 416 void PCA9955::outputDuty_char(Output output, char duty, int altAddr)
neilt6 0:7b3cbb5a53b8 417 {
neilt6 0:7b3cbb5a53b8 418 //Write the new 8-bit register value
neilt6 7:7dd3cc73e873 419 write((altAddr == NULL) ? m_ADDR : altAddr, REG_PWM0 + (char)output, duty);
neilt6 0:7b3cbb5a53b8 420 }
neilt6 0:7b3cbb5a53b8 421
neilt6 0:7b3cbb5a53b8 422 float PCA9955::outputCurrent(Output output)
neilt6 0:7b3cbb5a53b8 423 {
neilt6 0:7b3cbb5a53b8 424 //Return the value as a float
neilt6 9:a9f91f91633b 425 return outputCurrent_char(output) / 255.0;
neilt6 0:7b3cbb5a53b8 426 }
neilt6 0:7b3cbb5a53b8 427
neilt6 7:7dd3cc73e873 428 void PCA9955::outputCurrent(Output output, float iref, int altAddr)
neilt6 0:7b3cbb5a53b8 429 {
neilt6 0:7b3cbb5a53b8 430 //Range check the value
neilt6 9:a9f91f91633b 431 if (iref < 0.0)
neilt6 9:a9f91f91633b 432 iref = 0.0;
neilt6 9:a9f91f91633b 433 if (iref > 1.0)
neilt6 9:a9f91f91633b 434 iref = 1.0;
neilt6 0:7b3cbb5a53b8 435
neilt6 0:7b3cbb5a53b8 436 //Convert the value to a char and write it
neilt6 9:a9f91f91633b 437 outputCurrent_char(output, (char)(iref * 255.0), altAddr);
neilt6 0:7b3cbb5a53b8 438 }
neilt6 0:7b3cbb5a53b8 439
neilt6 0:7b3cbb5a53b8 440 char PCA9955::outputCurrent_char(Output output)
neilt6 0:7b3cbb5a53b8 441 {
neilt6 0:7b3cbb5a53b8 442 //Return the 8-bit register value
neilt6 0:7b3cbb5a53b8 443 return read(REG_IREF0 + (char)output);
neilt6 0:7b3cbb5a53b8 444 }
neilt6 0:7b3cbb5a53b8 445
neilt6 7:7dd3cc73e873 446 void PCA9955::outputCurrent_char(Output output, char iref, int altAddr)
neilt6 0:7b3cbb5a53b8 447 {
neilt6 0:7b3cbb5a53b8 448 //Write the new 8-bit register value
neilt6 7:7dd3cc73e873 449 write((altAddr == NULL) ? m_ADDR : altAddr, REG_IREF0 + (char)output, iref);
neilt6 0:7b3cbb5a53b8 450 }
neilt6 0:7b3cbb5a53b8 451
neilt6 1:016f916c5579 452 char PCA9955::outputDelay()
neilt6 0:7b3cbb5a53b8 453 {
neilt6 0:7b3cbb5a53b8 454 //Return the 8-bit register value (minus the top 4 bits)
neilt6 0:7b3cbb5a53b8 455 return read(REG_OFFSET) & 0x0F;
neilt6 0:7b3cbb5a53b8 456 }
neilt6 0:7b3cbb5a53b8 457
neilt6 7:7dd3cc73e873 458 void PCA9955::outputDelay(char clocks, int altAddr)
neilt6 0:7b3cbb5a53b8 459 {
neilt6 0:7b3cbb5a53b8 460 //Write the new 8-bit register value (minus the top 4 bits)
neilt6 7:7dd3cc73e873 461 write((altAddr == NULL) ? m_ADDR : altAddr, REG_OFFSET, clocks & 0x0F);
neilt6 0:7b3cbb5a53b8 462 }
neilt6 0:7b3cbb5a53b8 463
neilt6 1:016f916c5579 464 char PCA9955::subCall1Addr()
neilt6 0:7b3cbb5a53b8 465 {
neilt6 0:7b3cbb5a53b8 466 //Return the 8-bit address
neilt6 0:7b3cbb5a53b8 467 return read(REG_SUBADR1);
neilt6 0:7b3cbb5a53b8 468 }
neilt6 0:7b3cbb5a53b8 469
neilt6 7:7dd3cc73e873 470 void PCA9955::subCall1Addr(char addr, int altAddr)
neilt6 0:7b3cbb5a53b8 471 {
neilt6 0:7b3cbb5a53b8 472 //Write the new 8-bit address
neilt6 7:7dd3cc73e873 473 write((altAddr == NULL) ? m_ADDR : altAddr, REG_SUBADR1, addr);
neilt6 0:7b3cbb5a53b8 474 }
neilt6 0:7b3cbb5a53b8 475
neilt6 1:016f916c5579 476 char PCA9955::subCall2Addr()
neilt6 0:7b3cbb5a53b8 477 {
neilt6 0:7b3cbb5a53b8 478 //Return the 8-bit address
neilt6 0:7b3cbb5a53b8 479 return read(REG_SUBADR2);
neilt6 0:7b3cbb5a53b8 480 }
neilt6 0:7b3cbb5a53b8 481
neilt6 7:7dd3cc73e873 482 void PCA9955::subCall2Addr(char addr, int altAddr)
neilt6 0:7b3cbb5a53b8 483 {
neilt6 0:7b3cbb5a53b8 484 //Write the new 8-bit address
neilt6 7:7dd3cc73e873 485 write((altAddr == NULL) ? m_ADDR : altAddr, REG_SUBADR2, addr);
neilt6 0:7b3cbb5a53b8 486 }
neilt6 0:7b3cbb5a53b8 487
neilt6 1:016f916c5579 488 char PCA9955::subCall3Addr()
neilt6 0:7b3cbb5a53b8 489 {
neilt6 0:7b3cbb5a53b8 490 //Return the 8-bit address
neilt6 0:7b3cbb5a53b8 491 return read(REG_SUBADR3);
neilt6 0:7b3cbb5a53b8 492 }
neilt6 0:7b3cbb5a53b8 493
neilt6 7:7dd3cc73e873 494 void PCA9955::subCall3Addr(char addr, int altAddr)
neilt6 0:7b3cbb5a53b8 495 {
neilt6 0:7b3cbb5a53b8 496 //Write the new 8-bit address
neilt6 7:7dd3cc73e873 497 write((altAddr == NULL) ? m_ADDR : altAddr, REG_SUBADR3, addr);
neilt6 0:7b3cbb5a53b8 498 }
neilt6 0:7b3cbb5a53b8 499
neilt6 1:016f916c5579 500 char PCA9955::allCallAddr()
neilt6 0:7b3cbb5a53b8 501 {
neilt6 0:7b3cbb5a53b8 502 //Return the 8-bit address
neilt6 0:7b3cbb5a53b8 503 return read(REG_ALLCALLADR);
neilt6 0:7b3cbb5a53b8 504 }
neilt6 0:7b3cbb5a53b8 505
neilt6 7:7dd3cc73e873 506 void PCA9955::allCallAddr(char addr, int altAddr)
neilt6 0:7b3cbb5a53b8 507 {
neilt6 0:7b3cbb5a53b8 508 //Write the new 8-bit address
neilt6 7:7dd3cc73e873 509 write((altAddr == NULL) ? m_ADDR : altAddr, REG_ALLCALLADR, addr);
neilt6 0:7b3cbb5a53b8 510 }
neilt6 0:7b3cbb5a53b8 511
neilt6 7:7dd3cc73e873 512 void PCA9955::allOutputStates(OutputState state, int altAddr)
neilt6 0:7b3cbb5a53b8 513 {
neilt6 0:7b3cbb5a53b8 514 char buff[5];
neilt6 0:7b3cbb5a53b8 515
neilt6 0:7b3cbb5a53b8 516 //Assemble the sending array
neilt6 0:7b3cbb5a53b8 517 buff[0] = REG_LEDOUT0 | REG_AUTO_INC;
neilt6 0:7b3cbb5a53b8 518 if (state == OUTPUT_OFF) {
neilt6 0:7b3cbb5a53b8 519 memset(buff + 1, 0x00, 4);
neilt6 0:7b3cbb5a53b8 520 } else if (state == OUTPUT_ON) {
neilt6 0:7b3cbb5a53b8 521 memset(buff + 1, 0x55, 4);
neilt6 0:7b3cbb5a53b8 522 } else if (state == OUTPUT_PWM) {
neilt6 0:7b3cbb5a53b8 523 memset(buff + 1, 0xAA, 4);
neilt6 0:7b3cbb5a53b8 524 } else {
neilt6 0:7b3cbb5a53b8 525 memset(buff + 1, 0xFF, 4);
neilt6 0:7b3cbb5a53b8 526 }
neilt6 0:7b3cbb5a53b8 527
neilt6 0:7b3cbb5a53b8 528 //Send the array
neilt6 7:7dd3cc73e873 529 writeMulti((altAddr == NULL) ? m_ADDR : altAddr, buff, 5);
neilt6 0:7b3cbb5a53b8 530 }
neilt6 0:7b3cbb5a53b8 531
neilt6 1:016f916c5579 532 void PCA9955::getOutputDuties(float* duties)
neilt6 1:016f916c5579 533 {
neilt6 1:016f916c5579 534 char buff[16];
neilt6 1:016f916c5579 535
neilt6 1:016f916c5579 536 //Read all of the duty cycles as unsigned chars first
neilt6 1:016f916c5579 537 getOutputDuties_char(buff);
neilt6 1:016f916c5579 538
neilt6 1:016f916c5579 539 //Convert all of the duty cycles to percents
neilt6 1:016f916c5579 540 for (int i = 0; i < 16; i++) {
neilt6 9:a9f91f91633b 541 duties[i] = buff[i] / 255.0;
neilt6 1:016f916c5579 542 }
neilt6 1:016f916c5579 543 }
neilt6 1:016f916c5579 544
neilt6 8:12a800c51b35 545 void PCA9955::setOutputDuties(float* duties, int altAddr)
neilt6 1:016f916c5579 546 {
neilt6 1:016f916c5579 547 char buff[17];
neilt6 1:016f916c5579 548
neilt6 1:016f916c5579 549 //Assemble the sending array
neilt6 1:016f916c5579 550 buff[0] = REG_PWM0 | REG_AUTO_INC;
neilt6 1:016f916c5579 551 for (int i = 1; i < 17; i++) {
neilt6 1:016f916c5579 552 //Range check the value
neilt6 9:a9f91f91633b 553 if (duties[i - 1] < 0.0)
neilt6 9:a9f91f91633b 554 duties[i - 1] = 0.0;
neilt6 9:a9f91f91633b 555 if (duties[i - 1] > 1.0)
neilt6 9:a9f91f91633b 556 duties[i - 1] = 1.0;
neilt6 1:016f916c5579 557
neilt6 1:016f916c5579 558 //Convert the value to a char and write it
neilt6 9:a9f91f91633b 559 buff[i] = duties[i - 1] * 255.0;
neilt6 1:016f916c5579 560 }
neilt6 1:016f916c5579 561
neilt6 1:016f916c5579 562 //Send the array
neilt6 7:7dd3cc73e873 563 writeMulti((altAddr == NULL) ? m_ADDR : altAddr, buff, 17);
neilt6 1:016f916c5579 564 }
neilt6 1:016f916c5579 565
neilt6 8:12a800c51b35 566 void PCA9955::allOutputDuties(float duty, int altAddr)
neilt6 8:12a800c51b35 567 {
neilt6 8:12a800c51b35 568 //Range check the value
neilt6 9:a9f91f91633b 569 if (duty < 0.0)
neilt6 9:a9f91f91633b 570 duty = 0.0;
neilt6 9:a9f91f91633b 571 if (duty > 1.0)
neilt6 9:a9f91f91633b 572 duty = 1.0;
neilt6 8:12a800c51b35 573
neilt6 8:12a800c51b35 574 //Convert the value to a char and write it
neilt6 9:a9f91f91633b 575 allOutputDuties_char((char)(duty * 255.0), altAddr);
neilt6 8:12a800c51b35 576 }
neilt6 8:12a800c51b35 577
neilt6 1:016f916c5579 578 void PCA9955::getOutputDuties_char(char* duties)
neilt6 1:016f916c5579 579 {
neilt6 1:016f916c5579 580 //Read all of the duty cycles at once
neilt6 1:016f916c5579 581 readMulti(REG_PWM0 | REG_AUTO_INC, duties, 16);
neilt6 1:016f916c5579 582 }
neilt6 1:016f916c5579 583
neilt6 8:12a800c51b35 584 void PCA9955::setOutputDuties_char(char* duties, int altAddr)
neilt6 1:016f916c5579 585 {
neilt6 1:016f916c5579 586 char buff[17];
neilt6 1:016f916c5579 587
neilt6 1:016f916c5579 588 //Assemble the sending array
neilt6 1:016f916c5579 589 buff[0] = REG_PWM0 | REG_AUTO_INC;
neilt6 1:016f916c5579 590 memcpy(buff + 1, duties, 16);
neilt6 1:016f916c5579 591
neilt6 1:016f916c5579 592 //Send the array
neilt6 7:7dd3cc73e873 593 writeMulti((altAddr == NULL) ? m_ADDR : altAddr, buff, 17);
neilt6 1:016f916c5579 594 }
neilt6 1:016f916c5579 595
neilt6 8:12a800c51b35 596 void PCA9955::allOutputDuties_char(char duty, int altAddr)
neilt6 8:12a800c51b35 597 {
neilt6 8:12a800c51b35 598 //Write the new 8-bit register value
neilt6 8:12a800c51b35 599 write((altAddr == NULL) ? m_ADDR : altAddr, REG_PWMALL, duty);
neilt6 8:12a800c51b35 600 }
neilt6 8:12a800c51b35 601
neilt6 1:016f916c5579 602 void PCA9955::getOutputCurrents(float* irefs)
neilt6 1:016f916c5579 603 {
neilt6 1:016f916c5579 604 char buff[16];
neilt6 1:016f916c5579 605
neilt6 1:016f916c5579 606 //Read all of the current references as unsigned chars first
neilt6 1:016f916c5579 607 getOutputCurrents_char(buff);
neilt6 1:016f916c5579 608
neilt6 1:016f916c5579 609 //Convert all of the duty cycles to percents
neilt6 1:016f916c5579 610 for (int i = 0; i < 16; i++) {
neilt6 9:a9f91f91633b 611 irefs[i] = buff[i] / 255.0;
neilt6 1:016f916c5579 612 }
neilt6 1:016f916c5579 613 }
neilt6 1:016f916c5579 614
neilt6 8:12a800c51b35 615 void PCA9955::setOutputCurrents(float* irefs, int altAddr)
neilt6 1:016f916c5579 616 {
neilt6 1:016f916c5579 617 char buff[17];
neilt6 1:016f916c5579 618
neilt6 1:016f916c5579 619 //Assemble the sending array
neilt6 1:016f916c5579 620 buff[0] = REG_IREF0 | REG_AUTO_INC;
neilt6 1:016f916c5579 621 for (int i = 1; i < 17; i++) {
neilt6 1:016f916c5579 622 //Range check the value
neilt6 9:a9f91f91633b 623 if (irefs[i - 1] < 0.0)
neilt6 9:a9f91f91633b 624 irefs[i - 1] = 0.0;
neilt6 9:a9f91f91633b 625 if (irefs[i - 1] > 1.0)
neilt6 9:a9f91f91633b 626 irefs[i - 1] = 1.0;
neilt6 1:016f916c5579 627
neilt6 1:016f916c5579 628 //Convert the value to a char and write it
neilt6 9:a9f91f91633b 629 buff[i] = irefs[i - 1] * 255.0;
neilt6 1:016f916c5579 630 }
neilt6 1:016f916c5579 631
neilt6 1:016f916c5579 632 //Send the array
neilt6 7:7dd3cc73e873 633 writeMulti((altAddr == NULL) ? m_ADDR : altAddr, buff, 17);
neilt6 1:016f916c5579 634 }
neilt6 1:016f916c5579 635
neilt6 8:12a800c51b35 636 void PCA9955::allOutputCurrents(float iref, int altAddr)
neilt6 8:12a800c51b35 637 {
neilt6 8:12a800c51b35 638 //Range check the value
neilt6 9:a9f91f91633b 639 if (iref < 0.0)
neilt6 9:a9f91f91633b 640 iref = 0.0;
neilt6 9:a9f91f91633b 641 if (iref > 1.0)
neilt6 9:a9f91f91633b 642 iref = 1.0;
neilt6 8:12a800c51b35 643
neilt6 8:12a800c51b35 644 //Convert the value to a char and write it
neilt6 9:a9f91f91633b 645 allOutputCurrents_char((char)(iref * 255.0), altAddr);
neilt6 8:12a800c51b35 646 }
neilt6 8:12a800c51b35 647
neilt6 1:016f916c5579 648 void PCA9955::getOutputCurrents_char(char* irefs)
neilt6 1:016f916c5579 649 {
neilt6 1:016f916c5579 650 //Read all of the current references at once
neilt6 1:016f916c5579 651 readMulti(REG_IREF0 | REG_AUTO_INC, irefs, 16);
neilt6 1:016f916c5579 652 }
neilt6 1:016f916c5579 653
neilt6 8:12a800c51b35 654 void PCA9955::setOutputCurrents_char(char* irefs, int altAddr)
neilt6 1:016f916c5579 655 {
neilt6 1:016f916c5579 656 char buff[17];
neilt6 1:016f916c5579 657
neilt6 1:016f916c5579 658 //Assemble the sending array
neilt6 1:016f916c5579 659 buff[0] = REG_IREF0 | REG_AUTO_INC;
neilt6 1:016f916c5579 660 memcpy(buff + 1, irefs, 16);
neilt6 1:016f916c5579 661
neilt6 1:016f916c5579 662 //Send the array
neilt6 7:7dd3cc73e873 663 writeMulti((altAddr == NULL) ? m_ADDR : altAddr, buff, 17);
neilt6 1:016f916c5579 664 }
neilt6 1:016f916c5579 665
neilt6 8:12a800c51b35 666 void PCA9955::allOutputCurrents_char(char iref, int altAddr)
neilt6 8:12a800c51b35 667 {
neilt6 8:12a800c51b35 668 //Write the new 8-bit register value
neilt6 8:12a800c51b35 669 write((altAddr == NULL) ? m_ADDR : altAddr, REG_IREFALL, iref);
neilt6 8:12a800c51b35 670 }
neilt6 8:12a800c51b35 671
neilt6 1:016f916c5579 672 unsigned short PCA9955::faultTest()
neilt6 0:7b3cbb5a53b8 673 {
neilt6 0:7b3cbb5a53b8 674 //Read the current 8-bit register value
neilt6 0:7b3cbb5a53b8 675 char value = read(REG_MODE2);
neilt6 0:7b3cbb5a53b8 676
neilt6 0:7b3cbb5a53b8 677 //Set the FAULTTEST bit
neilt6 0:7b3cbb5a53b8 678 value |= (1 << 6);
neilt6 0:7b3cbb5a53b8 679
neilt6 0:7b3cbb5a53b8 680 //Write the value back out
neilt6 7:7dd3cc73e873 681 write(m_ADDR, REG_MODE2, value);
neilt6 0:7b3cbb5a53b8 682
neilt6 0:7b3cbb5a53b8 683 //Wait for the fault test to complete
neilt6 0:7b3cbb5a53b8 684 while (read(REG_MODE2) & (1 << 6));
neilt6 0:7b3cbb5a53b8 685
neilt6 0:7b3cbb5a53b8 686 //Read the lower 8 flags
neilt6 0:7b3cbb5a53b8 687 unsigned short flags = read(REG_EFLAG0);
neilt6 0:7b3cbb5a53b8 688
neilt6 0:7b3cbb5a53b8 689 //Add the upper 8 flags
neilt6 0:7b3cbb5a53b8 690 flags |= read(REG_EFLAG1) << 8;
neilt6 0:7b3cbb5a53b8 691
neilt6 0:7b3cbb5a53b8 692 //Return the combined flags
neilt6 0:7b3cbb5a53b8 693 return flags;
neilt6 0:7b3cbb5a53b8 694 }
neilt6 0:7b3cbb5a53b8 695
neilt6 1:016f916c5579 696 PCA9955& PCA9955::operator=(float value)
neilt6 1:016f916c5579 697 {
neilt6 1:016f916c5579 698 //Set all of the output duties
neilt6 1:016f916c5579 699 allOutputDuties(value);
neilt6 1:016f916c5579 700 return *this;
neilt6 1:016f916c5579 701 }
neilt6 1:016f916c5579 702
neilt6 0:7b3cbb5a53b8 703 char PCA9955::read(char reg)
neilt6 0:7b3cbb5a53b8 704 {
neilt6 0:7b3cbb5a53b8 705 //Select the register
neilt6 1:016f916c5579 706 m_I2C.write(m_ADDR, &reg, 1, true);
neilt6 0:7b3cbb5a53b8 707
neilt6 0:7b3cbb5a53b8 708 //Read the 8-bit register
neilt6 1:016f916c5579 709 m_I2C.read(m_ADDR, &reg, 1);
neilt6 0:7b3cbb5a53b8 710
neilt6 0:7b3cbb5a53b8 711 //Return the byte
neilt6 0:7b3cbb5a53b8 712 return reg;
neilt6 0:7b3cbb5a53b8 713 }
neilt6 0:7b3cbb5a53b8 714
neilt6 7:7dd3cc73e873 715 void PCA9955::write(int addr, char reg, char data)
neilt6 0:7b3cbb5a53b8 716 {
neilt6 0:7b3cbb5a53b8 717 //Create a temporary buffer
neilt6 0:7b3cbb5a53b8 718 char buff[2];
neilt6 0:7b3cbb5a53b8 719
neilt6 0:7b3cbb5a53b8 720 //Load the register address and 8-bit data
neilt6 0:7b3cbb5a53b8 721 buff[0] = reg;
neilt6 0:7b3cbb5a53b8 722 buff[1] = data;
neilt6 0:7b3cbb5a53b8 723
neilt6 0:7b3cbb5a53b8 724 //Write the data
neilt6 7:7dd3cc73e873 725 m_I2C.write(addr, buff, 2);
neilt6 1:016f916c5579 726 }
neilt6 1:016f916c5579 727
neilt6 1:016f916c5579 728 void PCA9955::readMulti(char startReg, char* data, int length)
neilt6 1:016f916c5579 729 {
neilt6 1:016f916c5579 730 //Select the starting register
neilt6 1:016f916c5579 731 m_I2C.write(m_ADDR, &startReg, 1, true);
neilt6 1:016f916c5579 732
neilt6 1:016f916c5579 733 //Read the specified number of bytes
neilt6 1:016f916c5579 734 m_I2C.read(m_ADDR, data, length);
neilt6 0:7b3cbb5a53b8 735 }
neilt6 0:7b3cbb5a53b8 736
neilt6 7:7dd3cc73e873 737 void PCA9955::writeMulti(int addr, char* data, int length)
neilt6 0:7b3cbb5a53b8 738 {
neilt6 0:7b3cbb5a53b8 739 //Write the data
neilt6 7:7dd3cc73e873 740 m_I2C.write(addr, data, length);
neilt6 0:7b3cbb5a53b8 741 }