Greg Steiert / MAX14690_ptr

MAX14690 library

Fork of MAX14690 by Maxim Integrated

MAX14690.cpp@10:32c7e2ab67aa, 2016-11-18 (annotated)

Committer:
switches
Date:
Fri Nov 18 22:06:28 2016 +0000
Revision:
10:32c7e2ab67aa
Parent:
9:8fb54367ceb5
Child:
13:666b6c505289
New library for MAX14690N

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jbradshaw 0:0e40db4a2b3e 1 /*******************************************************************************
jbradshaw 0:0e40db4a2b3e 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
jbradshaw 0:0e40db4a2b3e 3 *
jbradshaw 0:0e40db4a2b3e 4 * Permission is hereby granted, free of charge, to any person obtaining a
jbradshaw 0:0e40db4a2b3e 5 * copy of this software and associated documentation files (the "Software"),
jbradshaw 0:0e40db4a2b3e 6 * to deal in the Software without restriction, including without limitation
jbradshaw 0:0e40db4a2b3e 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
jbradshaw 0:0e40db4a2b3e 8 * and/or sell copies of the Software, and to permit persons to whom the
jbradshaw 0:0e40db4a2b3e 9 * Software is furnished to do so, subject to the following conditions:
jbradshaw 0:0e40db4a2b3e 10 *
jbradshaw 0:0e40db4a2b3e 11 * The above copyright notice and this permission notice shall be included
jbradshaw 0:0e40db4a2b3e 12 * in all copies or substantial portions of the Software.
jbradshaw 0:0e40db4a2b3e 13 *
jbradshaw 0:0e40db4a2b3e 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
jbradshaw 0:0e40db4a2b3e 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
jbradshaw 0:0e40db4a2b3e 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
jbradshaw 0:0e40db4a2b3e 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
jbradshaw 0:0e40db4a2b3e 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
jbradshaw 0:0e40db4a2b3e 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
jbradshaw 0:0e40db4a2b3e 20 * OTHER DEALINGS IN THE SOFTWARE.
jbradshaw 0:0e40db4a2b3e 21 *
jbradshaw 0:0e40db4a2b3e 22 * Except as contained in this notice, the name of Maxim Integrated
jbradshaw 0:0e40db4a2b3e 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
jbradshaw 0:0e40db4a2b3e 24 * Products, Inc. Branding Policy.
jbradshaw 0:0e40db4a2b3e 25 *
jbradshaw 0:0e40db4a2b3e 26 * The mere transfer of this software does not imply any licenses
jbradshaw 0:0e40db4a2b3e 27 * of trade secrets, proprietary technology, copyrights, patents,
jbradshaw 0:0e40db4a2b3e 28 * trademarks, maskwork rights, or any other form of intellectual
jbradshaw 0:0e40db4a2b3e 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
jbradshaw 0:0e40db4a2b3e 30 * ownership rights.
jbradshaw 0:0e40db4a2b3e 31 *******************************************************************************
jbradshaw 0:0e40db4a2b3e 32 */
jbradshaw 0:0e40db4a2b3e 33
switches 9:8fb54367ceb5 34 #include "MAX14690.h"
jbradshaw 0:0e40db4a2b3e 35
jbradshaw 0:0e40db4a2b3e 36 //******************************************************************************
switches 10:32c7e2ab67aa 37 MAX14690::MAX14690(PinName sda, PinName scl)
jbradshaw 0:0e40db4a2b3e 38 {
switches 3:cdd88a3d3d24 39 i2c = new I2C(sda,scl);
switches 3:cdd88a3d3d24 40 isOwner = true;
switches 10:32c7e2ab67aa 41 resetToDefaults();
jbradshaw 0:0e40db4a2b3e 42 }
jbradshaw 0:0e40db4a2b3e 43 //******************************************************************************
switches 10:32c7e2ab67aa 44 MAX14690::MAX14690(I2C *i2c)
jbradshaw 0:0e40db4a2b3e 45 {
switches 3:cdd88a3d3d24 46 this->i2c = i2c;
switches 3:cdd88a3d3d24 47 isOwner = false;
switches 10:32c7e2ab67aa 48 resetToDefaults();
jbradshaw 0:0e40db4a2b3e 49 }
jessexm 8:2c3f2da51c5d 50
jbradshaw 0:0e40db4a2b3e 51 //******************************************************************************
switches 9:8fb54367ceb5 52 MAX14690::~MAX14690()
jbradshaw 0:0e40db4a2b3e 53 {
switches 3:cdd88a3d3d24 54 if (isOwner == true) {
switches 3:cdd88a3d3d24 55 delete i2c;
switches 3:cdd88a3d3d24 56 }
switches 3:cdd88a3d3d24 57 }
switches 3:cdd88a3d3d24 58
switches 3:cdd88a3d3d24 59 //******************************************************************************
switches 10:32c7e2ab67aa 60 void MAX14690::resetToDefaults()
switches 3:cdd88a3d3d24 61 {
switches 10:32c7e2ab67aa 62 intEnThermStatus = false;
switches 10:32c7e2ab67aa 63 intEnChgStatus = false;
switches 10:32c7e2ab67aa 64 intEnILim = false;
switches 10:32c7e2ab67aa 65 intEnUSBOVP = false;
switches 10:32c7e2ab67aa 66 intEnUSBOK = false;
switches 10:32c7e2ab67aa 67 intEnChgThmSD = false;
switches 10:32c7e2ab67aa 68 intEnThermReg = false;
switches 10:32c7e2ab67aa 69 intEnChgTimeOut = false;
switches 10:32c7e2ab67aa 70 intEnThermBuck1 = false;
switches 10:32c7e2ab67aa 71 intEnThermBuck2 = false;
switches 10:32c7e2ab67aa 72 intEnThermLDO1 = false;
switches 10:32c7e2ab67aa 73 intEnThermLDO2 = false;
switches 10:32c7e2ab67aa 74 intEnThermLDO3 = false;
switches 10:32c7e2ab67aa 75 iLimCntl = ILIM_500mA;
switches 10:32c7e2ab67aa 76 chgAutoStp = true;
switches 10:32c7e2ab67aa 77 chgAutoReSta = true;
switches 10:32c7e2ab67aa 78 batReChg = BAT_RECHG_120mV;
switches 10:32c7e2ab67aa 79 batReg = BAT_REG_4200mV;
switches 10:32c7e2ab67aa 80 chgEn = true;
switches 10:32c7e2ab67aa 81 vPChg = VPCHG_3000mV;
switches 10:32c7e2ab67aa 82 iPChg = IPCHG_10;
switches 10:32c7e2ab67aa 83 chgDone = CHGDONE_10;
switches 10:32c7e2ab67aa 84 mtChgTmr = MTCHGTMR_0min;
switches 10:32c7e2ab67aa 85 fChgTmr = FCHGTMR_300min;
switches 10:32c7e2ab67aa 86 pChgTmr = PCHGTMR_60min;
switches 10:32c7e2ab67aa 87 buck1Md = BUCK_BURST;
switches 10:32c7e2ab67aa 88 buck1Ind = 0;
switches 10:32c7e2ab67aa 89 buck2Md = BUCK_BURST;
switches 10:32c7e2ab67aa 90 buck2Ind = 0;
switches 10:32c7e2ab67aa 91 ldo2Mode = LDO_DISABLED;
switches 10:32c7e2ab67aa 92 ldo2Millivolts = 3200;
switches 10:32c7e2ab67aa 93 ldo3Mode = LDO_DISABLED;
switches 10:32c7e2ab67aa 94 ldo3Millivolts = 3000;
switches 10:32c7e2ab67aa 95 thrmCfg = THRM_ENABLED;
switches 10:32c7e2ab67aa 96 monRatio = MON_DIV4;
switches 10:32c7e2ab67aa 97 monCfg = MON_PULLDOWN;
switches 10:32c7e2ab67aa 98 buck2ActDsc = false;
switches 10:32c7e2ab67aa 99 buck2FFET = false;
switches 10:32c7e2ab67aa 100 buck1ActDsc = false;
switches 10:32c7e2ab67aa 101 buck1FFET = false;
switches 10:32c7e2ab67aa 102 pfnResEna = true;
switches 10:32c7e2ab67aa 103 stayOn = true;
jbradshaw 0:0e40db4a2b3e 104 }
jbradshaw 0:0e40db4a2b3e 105
jbradshaw 0:0e40db4a2b3e 106 //******************************************************************************
switches 10:32c7e2ab67aa 107 int MAX14690::ldo2SetMode(ldoMode_t mode)
switches 3:cdd88a3d3d24 108 {
switches 10:32c7e2ab67aa 109 ldo2Mode = mode;
switches 10:32c7e2ab67aa 110 return writeReg(REG_LDO2_CFG, mode);
switches 10:32c7e2ab67aa 111 }
switches 10:32c7e2ab67aa 112
switches 10:32c7e2ab67aa 113 //******************************************************************************
switches 10:32c7e2ab67aa 114 int MAX14690::ldo2SetVoltage(int mV)
switches 10:32c7e2ab67aa 115 {
switches 10:32c7e2ab67aa 116 int regBits = mv2bits(mV);
switches 3:cdd88a3d3d24 117 char data;
jessexm 8:2c3f2da51c5d 118
switches 10:32c7e2ab67aa 119 if (regBits < 0) {
switches 10:32c7e2ab67aa 120 return MAX14690_ERROR;
switches 3:cdd88a3d3d24 121 } else {
switches 10:32c7e2ab67aa 122 data = regBits;
switches 3:cdd88a3d3d24 123 }
jessexm 8:2c3f2da51c5d 124
switches 10:32c7e2ab67aa 125 if (ldo2Mode == LDO_ENABLED) {
switches 10:32c7e2ab67aa 126 if (writeReg(REG_LDO2_CFG, LDO_DISABLED) != MAX14690_NO_ERROR) {
switches 9:8fb54367ceb5 127 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 128 }
switches 3:cdd88a3d3d24 129 }
jessexm 8:2c3f2da51c5d 130
switches 10:32c7e2ab67aa 131 if (writeReg(REG_LDO2_VSET, data) != MAX14690_NO_ERROR) {
switches 9:8fb54367ceb5 132 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 133 }
jessexm 8:2c3f2da51c5d 134
switches 10:32c7e2ab67aa 135 if (ldo2Mode == LDO_ENABLED) {
switches 10:32c7e2ab67aa 136 if (writeReg(REG_LDO2_CFG, LDO_ENABLED) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 137 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 138 }
switches 10:32c7e2ab67aa 139 }
switches 10:32c7e2ab67aa 140
switches 10:32c7e2ab67aa 141 return MAX14690_NO_ERROR;
switches 10:32c7e2ab67aa 142 }
switches 10:32c7e2ab67aa 143
switches 10:32c7e2ab67aa 144 //******************************************************************************
switches 10:32c7e2ab67aa 145 int MAX14690::ldo3SetMode(ldoMode_t mode)
switches 10:32c7e2ab67aa 146 {
switches 10:32c7e2ab67aa 147 ldo3Mode = mode;
switches 10:32c7e2ab67aa 148 return writeReg(REG_LDO3_CFG, mode);
switches 10:32c7e2ab67aa 149 }
switches 10:32c7e2ab67aa 150
switches 10:32c7e2ab67aa 151 //******************************************************************************
switches 10:32c7e2ab67aa 152 int MAX14690::ldo3SetVoltage(int mV)
switches 10:32c7e2ab67aa 153 {
switches 10:32c7e2ab67aa 154 int regBits = mv2bits(mV);
switches 10:32c7e2ab67aa 155 char data;
switches 10:32c7e2ab67aa 156
switches 10:32c7e2ab67aa 157 if (regBits < 0) {
switches 10:32c7e2ab67aa 158 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 159 } else {
switches 10:32c7e2ab67aa 160 data = regBits;
switches 10:32c7e2ab67aa 161 }
switches 10:32c7e2ab67aa 162
switches 10:32c7e2ab67aa 163 if (ldo3Mode == LDO_ENABLED) {
switches 10:32c7e2ab67aa 164 if (writeReg(REG_LDO3_CFG, LDO_DISABLED) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 165 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 166 }
switches 10:32c7e2ab67aa 167 }
switches 10:32c7e2ab67aa 168
switches 10:32c7e2ab67aa 169 if (writeReg(REG_LDO3_VSET, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 170 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 171 }
switches 10:32c7e2ab67aa 172
switches 10:32c7e2ab67aa 173 if (ldo3Mode == LDO_ENABLED) {
switches 10:32c7e2ab67aa 174 if (writeReg(REG_LDO3_CFG, LDO_ENABLED) != MAX14690_NO_ERROR) {
switches 9:8fb54367ceb5 175 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 176 }
switches 3:cdd88a3d3d24 177 }
jessexm 8:2c3f2da51c5d 178
switches 9:8fb54367ceb5 179 return MAX14690_NO_ERROR;
jbradshaw 0:0e40db4a2b3e 180 }
jbradshaw 0:0e40db4a2b3e 181
jbradshaw 0:0e40db4a2b3e 182 //******************************************************************************
switches 9:8fb54367ceb5 183 int MAX14690::init()
switches 3:cdd88a3d3d24 184 {
switches 10:32c7e2ab67aa 185 int regBits;
switches 3:cdd88a3d3d24 186 char data;
jessexm 8:2c3f2da51c5d 187
switches 10:32c7e2ab67aa 188 // Configure buck regulators
switches 10:32c7e2ab67aa 189 data = (buck1Md << 1) |
switches 10:32c7e2ab67aa 190 (buck1Ind);
switches 10:32c7e2ab67aa 191 if (writeReg(REG_BUCK1_CFG, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 192 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 193 }
switches 10:32c7e2ab67aa 194 data = (buck2Md << 1) |
switches 10:32c7e2ab67aa 195 (buck2Ind);
switches 10:32c7e2ab67aa 196 if (writeReg(REG_BUCK2_CFG, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 197 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 198 }
switches 10:32c7e2ab67aa 199 data = (buck2ActDsc << 5) |
switches 10:32c7e2ab67aa 200 (buck2FFET << 4) |
switches 10:32c7e2ab67aa 201 (buck1ActDsc << 1) |
switches 10:32c7e2ab67aa 202 (buck1FFET);
switches 10:32c7e2ab67aa 203 if (writeReg(REG_BUCK_EXTRA, data) != MAX14690_NO_ERROR) {
switches 9:8fb54367ceb5 204 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 205 }
jessexm 8:2c3f2da51c5d 206
switches 10:32c7e2ab67aa 207 // Configure Charger
switches 10:32c7e2ab67aa 208 data = (iLimCntl);
switches 10:32c7e2ab67aa 209 if (writeReg(REG_I_LIM_CNTL, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 210 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 211 }
switches 10:32c7e2ab67aa 212 data = (vPChg << 4) |
switches 10:32c7e2ab67aa 213 (iPChg << 2) |
switches 10:32c7e2ab67aa 214 (chgDone);
switches 10:32c7e2ab67aa 215 if (writeReg(REG_CHG_CNTL_B, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 216 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 217 }
switches 10:32c7e2ab67aa 218 data = (mtChgTmr << 4) |
switches 10:32c7e2ab67aa 219 (fChgTmr << 2) |
switches 10:32c7e2ab67aa 220 (pChgTmr);
switches 10:32c7e2ab67aa 221 if (writeReg(REG_CHG_TMR, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 222 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 223 }
switches 10:32c7e2ab67aa 224 data = (thrmCfg);
switches 10:32c7e2ab67aa 225 if (writeReg(REG_THRM_CFG, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 226 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 227 }
switches 10:32c7e2ab67aa 228 // Set enable bit after setting other charger bits
switches 10:32c7e2ab67aa 229 data = (chgAutoStp << 7) |
switches 10:32c7e2ab67aa 230 (chgAutoReSta << 6) |
switches 10:32c7e2ab67aa 231 (batReChg << 4) |
switches 10:32c7e2ab67aa 232 (batReg << 1) |
switches 10:32c7e2ab67aa 233 (chgEn);
switches 10:32c7e2ab67aa 234 if (writeReg(REG_CHG_CNTL_A, data) != MAX14690_NO_ERROR) {
switches 9:8fb54367ceb5 235 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 236 }
jessexm 8:2c3f2da51c5d 237
switches 10:32c7e2ab67aa 238 // Configure monitor multiplexer
switches 10:32c7e2ab67aa 239 data = (monRatio << 4) |
switches 10:32c7e2ab67aa 240 (monCfg);
switches 10:32c7e2ab67aa 241 if (writeReg(REG_MON_CFG, data) != MAX14690_NO_ERROR) {
switches 9:8fb54367ceb5 242 return MAX14690_ERROR;
switches 3:cdd88a3d3d24 243 }
jessexm 8:2c3f2da51c5d 244
switches 10:32c7e2ab67aa 245 // Configure and enable LDOs
switches 10:32c7e2ab67aa 246 regBits = mv2bits(ldo2Millivolts);
switches 10:32c7e2ab67aa 247 if (regBits < 0) {
switches 10:32c7e2ab67aa 248 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 249 } else {
switches 10:32c7e2ab67aa 250 data = regBits;
switches 10:32c7e2ab67aa 251 }
switches 10:32c7e2ab67aa 252 if (writeReg(REG_LDO2_VSET, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 253 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 254 }
switches 10:32c7e2ab67aa 255 data = (ldo2Mode);
switches 10:32c7e2ab67aa 256 if (writeReg(REG_LDO2_CFG, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 257 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 258 }
switches 10:32c7e2ab67aa 259 regBits = mv2bits(ldo3Millivolts);
switches 10:32c7e2ab67aa 260 if (regBits < 0) {
switches 10:32c7e2ab67aa 261 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 262 } else {
switches 10:32c7e2ab67aa 263 data = regBits;
switches 10:32c7e2ab67aa 264 }
switches 10:32c7e2ab67aa 265 if (writeReg(REG_LDO3_VSET, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 266 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 267 }
switches 10:32c7e2ab67aa 268 data = (ldo3Mode);
switches 10:32c7e2ab67aa 269 if (writeReg(REG_LDO3_CFG, data) != MAX14690_NO_ERROR) {
switches 10:32c7e2ab67aa 270 return MAX14690_ERROR;
switches 10:32c7e2ab67aa 271 }
switches 10:32c7e2ab67aa 272
switches 10:32c7e2ab67aa 273 // Set stayOn bit after other registers to confirm successful boot.
switches 10:32c7e2ab67aa 274 data = (pfnResEna << 7) |
switches 10:32c7e2ab67aa 275 (stayOn);
switches 10:32c7e2ab67aa 276 if (writeReg(REG_PWR_CFG, data) != MAX14690_NO_ERROR) {
switches 9:8fb54367ceb5 277 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 278 }
jessexm 8:2c3f2da51c5d 279
switches 10:32c7e2ab67aa 280 // Unmask Interrupts Last
switches 10:32c7e2ab67aa 281 data = (intEnThermStatus << 7) |
switches 10:32c7e2ab67aa 282 (intEnChgStatus << 6) |
switches 10:32c7e2ab67aa 283 (intEnILim << 5) |
switches 10:32c7e2ab67aa 284 (intEnUSBOVP << 4) |
switches 10:32c7e2ab67aa 285 (intEnUSBOK << 3) |
switches 10:32c7e2ab67aa 286 (intEnChgThmSD << 2) |
switches 10:32c7e2ab67aa 287 (intEnThermReg << 1) |
switches 10:32c7e2ab67aa 288 (intEnChgTimeOut);
switches 10:32c7e2ab67aa 289 if (writeReg(REG_INT_MASK_A, data) != MAX14690_NO_ERROR) {
switches 9:8fb54367ceb5 290 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 291 }
switches 10:32c7e2ab67aa 292 data = (intEnThermBuck1 << 4) |
switches 10:32c7e2ab67aa 293 (intEnThermBuck2 << 3) |
switches 10:32c7e2ab67aa 294 (intEnThermLDO1 << 2) |
switches 10:32c7e2ab67aa 295 (intEnThermLDO2 << 1) |
switches 10:32c7e2ab67aa 296 (intEnThermLDO3);
switches 10:32c7e2ab67aa 297 if (writeReg(REG_INT_MASK_B, data) != MAX14690_NO_ERROR) {
switches 9:8fb54367ceb5 298 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 299 }
switches 10:32c7e2ab67aa 300
switches 9:8fb54367ceb5 301 return MAX14690_NO_ERROR;
jbradshaw 0:0e40db4a2b3e 302 }
jbradshaw 0:0e40db4a2b3e 303
jbradshaw 0:0e40db4a2b3e 304 //******************************************************************************
switches 10:32c7e2ab67aa 305 int MAX14690::monSet(monCfg_t newMonCfg, monRatio_t newMonRatio)
switches 3:cdd88a3d3d24 306 {
switches 10:32c7e2ab67aa 307 char data = (newMonRatio << 4) | (newMonCfg);
switches 10:32c7e2ab67aa 308 monCfg = newMonCfg;
switches 10:32c7e2ab67aa 309 monRatio = newMonRatio;
switches 10:32c7e2ab67aa 310 return writeReg(REG_MON_CFG, data);
jbradshaw 0:0e40db4a2b3e 311 }
jbradshaw 0:0e40db4a2b3e 312
jbradshaw 0:0e40db4a2b3e 313 //******************************************************************************
switches 9:8fb54367ceb5 314 int MAX14690::shutdown()
switches 3:cdd88a3d3d24 315 {
jessexm 8:2c3f2da51c5d 316 return writeReg(REG_PWR_OFF, 0xB2);
jbradshaw 0:0e40db4a2b3e 317 }
jbradshaw 0:0e40db4a2b3e 318
switches 3:cdd88a3d3d24 319
jbradshaw 0:0e40db4a2b3e 320 //******************************************************************************
switches 9:8fb54367ceb5 321 int MAX14690::writeReg(registers_t reg, char value)
jbradshaw 0:0e40db4a2b3e 322 {
jbradshaw 0:0e40db4a2b3e 323 char cmdData[2] = { (char)reg, value };
jessexm 8:2c3f2da51c5d 324
switches 10:32c7e2ab67aa 325 if (i2c->write(MAX14690_I2C_ADDR, cmdData, sizeof(cmdData)) != 0) {
switches 9:8fb54367ceb5 326 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 327 }
jessexm 8:2c3f2da51c5d 328
switches 9:8fb54367ceb5 329 return MAX14690_NO_ERROR;
jbradshaw 0:0e40db4a2b3e 330 }
jbradshaw 0:0e40db4a2b3e 331
jbradshaw 0:0e40db4a2b3e 332 //******************************************************************************
switches 9:8fb54367ceb5 333 int MAX14690::readReg(registers_t reg, char *value)
jbradshaw 0:0e40db4a2b3e 334 {
jbradshaw 0:0e40db4a2b3e 335 char cmdData[1] = { (char)reg };
switches 3:cdd88a3d3d24 336
switches 10:32c7e2ab67aa 337 if (i2c->write(MAX14690_I2C_ADDR, cmdData, sizeof(cmdData)) != 0) {
switches 9:8fb54367ceb5 338 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 339 }
jessexm 8:2c3f2da51c5d 340
switches 10:32c7e2ab67aa 341 if (i2c->read(MAX14690_I2C_ADDR, value, 1) != 0) {
switches 9:8fb54367ceb5 342 return MAX14690_ERROR;
jessexm 8:2c3f2da51c5d 343 }
jessexm 8:2c3f2da51c5d 344
switches 9:8fb54367ceb5 345 return MAX14690_NO_ERROR;
jbradshaw 0:0e40db4a2b3e 346 }
switches 10:32c7e2ab67aa 347
switches 10:32c7e2ab67aa 348 //******************************************************************************
switches 10:32c7e2ab67aa 349 int MAX14690::mv2bits(int mV)
switches 10:32c7e2ab67aa 350 {
switches 10:32c7e2ab67aa 351 int regBits;
switches 10:32c7e2ab67aa 352
switches 10:32c7e2ab67aa 353 if ((MAX14690_LDO_MIN_MV <= mV) && (mV <= MAX14690_LDO_MAX_MV)) {
switches 10:32c7e2ab67aa 354 regBits = (mV - MAX14690_LDO_MIN_MV) / MAX14690_LDO_STEP_MV;
switches 10:32c7e2ab67aa 355 } else {
switches 10:32c7e2ab67aa 356 return -1;
switches 10:32c7e2ab67aa 357 }
switches 10:32c7e2ab67aa 358
switches 10:32c7e2ab67aa 359 return regBits;
switches 10:32c7e2ab67aa 360 }