Neil Thiessen / MAX17048

A feature complete driver for the MAX17048 lithium fuel gauge from Maxim.

Dependents:   MAX17048_HelloWorld ECGAFE_copy MAX17048_HelloWorld Orion_newPCB_test_LV ... more

Now fully tested!

MAX17048.h@10:4f695111eb54, 2014-05-30 (annotated)

Committer:
neilt6
Date:
Fri May 30 19:02:51 2014 +0000
Revision:
10:4f695111eb54
Parent:
9:2c1d82ecd63c 
Added MBED_OPERATORS check to implementation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
neilt6 0:abc480f8eeab 1 /* MAX17048 Driver Library
neilt6 0:abc480f8eeab 2 * Copyright (c) 2013 Neil Thiessen
neilt6 0:abc480f8eeab 3 *
neilt6 0:abc480f8eeab 4 * Licensed under the Apache License, Version 2.0 (the "License");
neilt6 0:abc480f8eeab 5 * you may not use this file except in compliance with the License.
neilt6 0:abc480f8eeab 6 * You may obtain a copy of the License at
neilt6 0:abc480f8eeab 7 *
neilt6 0:abc480f8eeab 8 * http://www.apache.org/licenses/LICENSE-2.0
neilt6 0:abc480f8eeab 9 *
neilt6 0:abc480f8eeab 10 * Unless required by applicable law or agreed to in writing, software
neilt6 0:abc480f8eeab 11 * distributed under the License is distributed on an "AS IS" BASIS,
neilt6 0:abc480f8eeab 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
neilt6 0:abc480f8eeab 13 * See the License for the specific language governing permissions and
neilt6 0:abc480f8eeab 14 * limitations under the License.
neilt6 0:abc480f8eeab 15 */
neilt6 0:abc480f8eeab 16
neilt6 0:abc480f8eeab 17 #ifndef MAX17048_H
neilt6 0:abc480f8eeab 18 #define MAX17048_H
neilt6 0:abc480f8eeab 19
neilt6 0:abc480f8eeab 20 #include "mbed.h"
neilt6 0:abc480f8eeab 21
neilt6 0:abc480f8eeab 22 /** MAX17048 class.
neilt6 0:abc480f8eeab 23 * Used for controlling a MAX17048 fuel gauge connected via I2C.
neilt6 0:abc480f8eeab 24 *
neilt6 0:abc480f8eeab 25 * Example:
neilt6 0:abc480f8eeab 26 * @code
neilt6 0:abc480f8eeab 27 * #include "mbed.h"
neilt6 0:abc480f8eeab 28 * #include "MAX17048.h"
neilt6 0:abc480f8eeab 29 *
neilt6 0:abc480f8eeab 30 * MAX17048 gauge(p28, p27);
neilt6 0:abc480f8eeab 31 *
neilt6 3:32087cca331f 32 * int main()
neilt6 3:32087cca331f 33 * {
neilt6 3:32087cca331f 34 * //Try to open the MAX17048
neilt6 3:32087cca331f 35 * if (gauge.open()) {
neilt6 3:32087cca331f 36 * printf("Device detected!\n");
neilt6 0:abc480f8eeab 37 *
neilt6 7:bf6972a21c61 38 * //Load the default compensation value
neilt6 7:bf6972a21c61 39 * gauge.compensation(MAX17048::RCOMP0);
neilt6 7:bf6972a21c61 40 *
neilt6 3:32087cca331f 41 * while (1) {
neilt6 4:e61b2723d2cf 42 * //Print the current state of charge
neilt6 4:e61b2723d2cf 43 * printf("SOC = %f%%\n", (float)gauge);
neilt6 3:32087cca331f 44 *
neilt6 3:32087cca331f 45 * //Sleep for 0.5 seconds
neilt6 3:32087cca331f 46 * wait(0.5);
neilt6 3:32087cca331f 47 * }
neilt6 3:32087cca331f 48 * } else {
neilt6 4:e61b2723d2cf 49 * error("Device not detected!\n");
neilt6 0:abc480f8eeab 50 * }
neilt6 0:abc480f8eeab 51 * }
neilt6 0:abc480f8eeab 52 * @endcode
neilt6 0:abc480f8eeab 53 */
neilt6 0:abc480f8eeab 54 class MAX17048
neilt6 0:abc480f8eeab 55 {
neilt6 0:abc480f8eeab 56 public:
neilt6 7:bf6972a21c61 57 /** The default compensation value for the MAX17048
neilt6 7:bf6972a21c61 58 */
neilt6 8:65c889800b3a 59 static const char RCOMP0;
neilt6 7:bf6972a21c61 60
neilt6 0:abc480f8eeab 61 /** Represents the different alert flags for the MAX17048
neilt6 0:abc480f8eeab 62 */
neilt6 0:abc480f8eeab 63 enum AlertFlags {
neilt6 0:abc480f8eeab 64 ALERT_RI = (1 << 0), /**< Reset indicator */
neilt6 0:abc480f8eeab 65 ALERT_VH = (1 << 1), /**< Voltage high alert */
neilt6 0:abc480f8eeab 66 ALERT_VL = (1 << 2), /**< Voltage low alert */
neilt6 0:abc480f8eeab 67 ALERT_VR = (1 << 3), /**< Voltage reset alert */
neilt6 0:abc480f8eeab 68 ALERT_HD = (1 << 4), /**< SOC low alert */
neilt6 0:abc480f8eeab 69 ALERT_SC = (1 << 5) /**< SOC change alert */
neilt6 0:abc480f8eeab 70 };
neilt6 0:abc480f8eeab 71
neilt6 0:abc480f8eeab 72 /** Create a MAX17048 object connected to the specified I2C pins
neilt6 0:abc480f8eeab 73 *
neilt6 1:734b1a089a9c 74 * @param sda The I2C data pin.
neilt6 1:734b1a089a9c 75 * @param scl The I2C clock pin.
neilt6 9:2c1d82ecd63c 76 * @param hz The I2C bus frequency (defaults to 400kHz).
neilt6 0:abc480f8eeab 77 */
neilt6 9:2c1d82ecd63c 78 MAX17048(PinName sda, PinName scl, int hz = 400000);
neilt6 0:abc480f8eeab 79
neilt6 7:bf6972a21c61 80 /** Probe for the MAX17048 and indicate if it's present on the bus
neilt6 3:32087cca331f 81 *
neilt6 3:32087cca331f 82 * @returns
neilt6 3:32087cca331f 83 * 'true' if the device exists on the bus,
neilt6 3:32087cca331f 84 * 'false' if the device doesn't exist on the bus.
neilt6 3:32087cca331f 85 */
neilt6 5:ffce4fe12ed1 86 bool open();
neilt6 3:32087cca331f 87
neilt6 0:abc480f8eeab 88 /** Command the MAX17048 to perform a power-on reset
neilt6 0:abc480f8eeab 89 */
neilt6 5:ffce4fe12ed1 90 void reset();
neilt6 0:abc480f8eeab 91
neilt6 0:abc480f8eeab 92 /** Command the MAX17048 to perform a QuickStart
neilt6 0:abc480f8eeab 93 */
neilt6 5:ffce4fe12ed1 94 void quickStart();
neilt6 0:abc480f8eeab 95
neilt6 0:abc480f8eeab 96 /** Determine whether sleep mode is enabled on the MAX17048
neilt6 10:4f695111eb54 97 *
neilt6 10:4f695111eb54 98 * @returns
neilt6 10:4f695111eb54 99 * 'true' if sleep mode is enabled,
neilt6 10:4f695111eb54 100 * 'false' if sleep mode is disabled.
neilt6 10:4f695111eb54 101 */
neilt6 5:ffce4fe12ed1 102 bool sleepEnabled();
neilt6 0:abc480f8eeab 103
neilt6 0:abc480f8eeab 104 /** Enable or disable sleep mode on the MAX17048
neilt6 0:abc480f8eeab 105 *
neilt6 0:abc480f8eeab 106 * @param enabled Whether or not sleep mode is enabled.
neilt6 0:abc480f8eeab 107 */
neilt6 2:0a98e081b48c 108 void sleepEnabled(bool enabled);
neilt6 2:0a98e081b48c 109
neilt6 0:abc480f8eeab 110 /** Determine whether or not the MAX17048 is hibernating
neilt6 10:4f695111eb54 111 *
neilt6 10:4f695111eb54 112 * @returns
neilt6 10:4f695111eb54 113 * 'true' if hibernating,
neilt6 10:4f695111eb54 114 * 'false' if not hibernating.
neilt6 10:4f695111eb54 115 */
neilt6 5:ffce4fe12ed1 116 bool hibernating();
neilt6 2:0a98e081b48c 117
neilt6 0:abc480f8eeab 118 /** Get the current hibernate threshold of the MAX17048
neilt6 10:4f695111eb54 119 *
neilt6 10:4f695111eb54 120 * @returns The current hibernate threshold in \%/hr.
neilt6 10:4f695111eb54 121 */
neilt6 5:ffce4fe12ed1 122 float hibernateThreshold();
neilt6 2:0a98e081b48c 123
neilt6 0:abc480f8eeab 124 /** Set the hibernate threshold of the MAX17048
neilt6 0:abc480f8eeab 125 *
neilt6 0:abc480f8eeab 126 * @param threshold The new hibernate threshold in \%/hr.
neilt6 0:abc480f8eeab 127 */
neilt6 2:0a98e081b48c 128 void hibernateThreshold(float threshold);
neilt6 2:0a98e081b48c 129
neilt6 0:abc480f8eeab 130 /** Get the current active threshold of the MAX17048
neilt6 10:4f695111eb54 131 *
neilt6 10:4f695111eb54 132 * @returns The current active threshold in volts.
neilt6 10:4f695111eb54 133 */
neilt6 5:ffce4fe12ed1 134 float activeThreshold();
neilt6 2:0a98e081b48c 135
neilt6 0:abc480f8eeab 136 /** Set the active threshold of the MAX17048
neilt6 0:abc480f8eeab 137 *
neilt6 0:abc480f8eeab 138 * @param threshold The new active threshold in volts.
neilt6 0:abc480f8eeab 139 */
neilt6 2:0a98e081b48c 140 void activeThreshold(float threshold);
neilt6 2:0a98e081b48c 141
neilt6 0:abc480f8eeab 142 /** Get the production version of the MAX17048
neilt6 10:4f695111eb54 143 *
neilt6 10:4f695111eb54 144 * @returns The 16-bit production version.
neilt6 10:4f695111eb54 145 */
neilt6 5:ffce4fe12ed1 146 unsigned short version();
neilt6 2:0a98e081b48c 147
neilt6 7:bf6972a21c61 148 /** Get the current compensation value of the MAX17048
neilt6 7:bf6972a21c61 149 *
neilt6 7:bf6972a21c61 150 * @returns The current compensation value as an unsigned char (0 to 255).
neilt6 7:bf6972a21c61 151 */
neilt6 7:bf6972a21c61 152 char compensation();
neilt6 7:bf6972a21c61 153
neilt6 7:bf6972a21c61 154 /** Set the compensation value of the MAX17048
neilt6 7:bf6972a21c61 155 *
neilt6 7:bf6972a21c61 156 * @param rcomp The new compensation value as an unsigned char (0 to 255).
neilt6 7:bf6972a21c61 157 */
neilt6 7:bf6972a21c61 158 void compensation(char rcomp);
neilt6 7:bf6972a21c61 159
neilt6 7:bf6972a21c61 160 /** Set the compensation value of the MAX17048 from the current cell temperature
neilt6 0:abc480f8eeab 161 *
neilt6 0:abc480f8eeab 162 * @param temp The current cell temperature in °C.
neilt6 0:abc480f8eeab 163 */
neilt6 2:0a98e081b48c 164 void tempCompensation(float temp);
neilt6 2:0a98e081b48c 165
neilt6 0:abc480f8eeab 166 /** Determine whether or not the MAX17048 is in sleep mode
neilt6 10:4f695111eb54 167 *
neilt6 10:4f695111eb54 168 * @returns
neilt6 10:4f695111eb54 169 * 'true' if in sleep mode,
neilt6 10:4f695111eb54 170 * 'false' if not in sleep mode.
neilt6 10:4f695111eb54 171 */
neilt6 5:ffce4fe12ed1 172 bool sleeping();
neilt6 2:0a98e081b48c 173
neilt6 0:abc480f8eeab 174 /** Enter or exit sleep mode on the MAX17048 (sleep mode must be enabled first)
neilt6 0:abc480f8eeab 175 *
neilt6 0:abc480f8eeab 176 * @param sleep Whether or not to sleep.
neilt6 0:abc480f8eeab 177 */
neilt6 2:0a98e081b48c 178 void sleep(bool sleep);
neilt6 2:0a98e081b48c 179
neilt6 0:abc480f8eeab 180 /** Determine whether or not the SOC 1% change alert is enabled on the MAX17048
neilt6 10:4f695111eb54 181 *
neilt6 10:4f695111eb54 182 * @returns
neilt6 10:4f695111eb54 183 * 'true' if enabled,
neilt6 10:4f695111eb54 184 * 'false' if not enabled.
neilt6 10:4f695111eb54 185 */
neilt6 5:ffce4fe12ed1 186 bool socChangeAlertEnabled();
neilt6 2:0a98e081b48c 187
neilt6 0:abc480f8eeab 188 /** Enable or disable the SOC 1% change alert on the MAX17048
neilt6 0:abc480f8eeab 189 *
neilt6 0:abc480f8eeab 190 * @param enabled Whether or the SOC 1% change alert is enabled.
neilt6 0:abc480f8eeab 191 */
neilt6 2:0a98e081b48c 192 void socChangeAlertEnabled(bool enabled);
neilt6 2:0a98e081b48c 193
neilt6 0:abc480f8eeab 194 /** Determine whether or not the MAX17048 is asserting the ALRT pin
neilt6 10:4f695111eb54 195 *
neilt6 10:4f695111eb54 196 * @returns
neilt6 10:4f695111eb54 197 * 'true' if alerting,
neilt6 10:4f695111eb54 198 * 'false' if not alerting.
neilt6 10:4f695111eb54 199 */
neilt6 5:ffce4fe12ed1 200 bool alerting();
neilt6 2:0a98e081b48c 201
neilt6 0:abc480f8eeab 202 /** Command the MAX17048 to de-assert the ALRT pin
neilt6 10:4f695111eb54 203 */
neilt6 5:ffce4fe12ed1 204 void clearAlert();
neilt6 2:0a98e081b48c 205
neilt6 0:abc480f8eeab 206 /** Get the current SOC empty alert threshold of the MAX17048
neilt6 10:4f695111eb54 207 *
neilt6 10:4f695111eb54 208 * @returns The current SOC empty alert threshold in %.
neilt6 10:4f695111eb54 209 */
neilt6 5:ffce4fe12ed1 210 char emptyAlertThreshold();
neilt6 2:0a98e081b48c 211
neilt6 0:abc480f8eeab 212 /** Set the SOC empty alert threshold of the MAX17048
neilt6 0:abc480f8eeab 213 *
neilt6 0:abc480f8eeab 214 * @param threshold The new SOC empty alert threshold in %.
neilt6 0:abc480f8eeab 215 */
neilt6 2:0a98e081b48c 216 void emptyAlertThreshold(char threshold);
neilt6 2:0a98e081b48c 217
neilt6 0:abc480f8eeab 218 /** Get the current low voltage alert threshold of the MAX17048
neilt6 10:4f695111eb54 219 *
neilt6 10:4f695111eb54 220 * @returns The current low voltage alert threshold in volts.
neilt6 10:4f695111eb54 221 */
neilt6 5:ffce4fe12ed1 222 float vAlertMinThreshold();
neilt6 2:0a98e081b48c 223
neilt6 0:abc480f8eeab 224 /** Set the low voltage alert threshold of the MAX17048
neilt6 0:abc480f8eeab 225 *
neilt6 0:abc480f8eeab 226 * @param threshold The new low voltage alert threshold in volts.
neilt6 0:abc480f8eeab 227 */
neilt6 2:0a98e081b48c 228 void vAlertMinThreshold(float threshold);
neilt6 2:0a98e081b48c 229
neilt6 0:abc480f8eeab 230 /** Get the current high voltage alert threshold of the MAX17048
neilt6 10:4f695111eb54 231 *
neilt6 10:4f695111eb54 232 * @returns The current high voltage alert threshold in volts.
neilt6 10:4f695111eb54 233 */
neilt6 5:ffce4fe12ed1 234 float vAlertMaxThreshold();
neilt6 2:0a98e081b48c 235
neilt6 0:abc480f8eeab 236 /** Set the high voltage alert threshold of the MAX17048
neilt6 0:abc480f8eeab 237 *
neilt6 0:abc480f8eeab 238 * @param threshold The new high voltage alert threshold in volts.
neilt6 0:abc480f8eeab 239 */
neilt6 2:0a98e081b48c 240 void vAlertMaxThreshold(float threshold);
neilt6 2:0a98e081b48c 241
neilt6 0:abc480f8eeab 242 /** Get the current reset voltage threshold of the MAX17048
neilt6 10:4f695111eb54 243 *
neilt6 10:4f695111eb54 244 * @returns The current reset voltage threshold in volts.
neilt6 10:4f695111eb54 245 */
neilt6 5:ffce4fe12ed1 246 float vResetThreshold();
neilt6 2:0a98e081b48c 247
neilt6 0:abc480f8eeab 248 /** Set the reset voltage threshold of the MAX17048
neilt6 0:abc480f8eeab 249 *
neilt6 0:abc480f8eeab 250 * @param threshold The new reset voltage threshold in volts.
neilt6 0:abc480f8eeab 251 */
neilt6 2:0a98e081b48c 252 void vResetThreshold(float threshold);
neilt6 2:0a98e081b48c 253
neilt6 0:abc480f8eeab 254 /** Determine whether or not the reset voltage comparator is enabled on the MAX17048
neilt6 10:4f695111eb54 255 *
neilt6 10:4f695111eb54 256 * @returns
neilt6 10:4f695111eb54 257 * 'true' if enabled,
neilt6 10:4f695111eb54 258 * 'false' if not enabled.
neilt6 10:4f695111eb54 259 */
neilt6 5:ffce4fe12ed1 260 bool comparatorEnabled();
neilt6 2:0a98e081b48c 261
neilt6 0:abc480f8eeab 262 /** Enable or disable the reset voltage comparator on the MAX17048
neilt6 0:abc480f8eeab 263 *
neilt6 0:abc480f8eeab 264 * @param enabled Whether or not the reset voltage comparator is enabled.
neilt6 0:abc480f8eeab 265 */
neilt6 2:0a98e081b48c 266 void comparatorEnabled(bool enabled);
neilt6 2:0a98e081b48c 267
neilt6 0:abc480f8eeab 268 /** Get the factory programmed 8-bit ID of the MAX17048
neilt6 10:4f695111eb54 269 *
neilt6 10:4f695111eb54 270 * @returns The 8-bit ID.
neilt6 10:4f695111eb54 271 */
neilt6 5:ffce4fe12ed1 272 char id();
neilt6 2:0a98e081b48c 273
neilt6 0:abc480f8eeab 274 /** Determine whether or not the voltage reset alert is enabled on the MAX17048
neilt6 10:4f695111eb54 275 *
neilt6 10:4f695111eb54 276 * @returns
neilt6 10:4f695111eb54 277 * 'true' if enabled,
neilt6 10:4f695111eb54 278 * 'false' if not enabled.
neilt6 10:4f695111eb54 279 */
neilt6 5:ffce4fe12ed1 280 bool vResetAlertEnabled();
neilt6 2:0a98e081b48c 281
neilt6 0:abc480f8eeab 282 /** Enable or disable the voltage reset alert on the MAX17048
neilt6 0:abc480f8eeab 283 *
neilt6 0:abc480f8eeab 284 * @param enabled Whether or the voltage reset alert is enabled.
neilt6 0:abc480f8eeab 285 */
neilt6 2:0a98e081b48c 286 void vResetAlertEnabled(bool enabled);
neilt6 2:0a98e081b48c 287
neilt6 0:abc480f8eeab 288 /** Get the current alert flags on the MAX17048
neilt6 10:4f695111eb54 289 *
neilt6 10:4f695111eb54 290 * @returns The current alert flags as AlertFlags enum values OR'd together.
neilt6 10:4f695111eb54 291 */
neilt6 5:ffce4fe12ed1 292 char alertFlags();
neilt6 2:0a98e081b48c 293
neilt6 0:abc480f8eeab 294 /** Clear the specified alert flags on the MAX17048
neilt6 0:abc480f8eeab 295 *
neilt6 0:abc480f8eeab 296 * @param flags The alert flags to clear as AlertFlags enum values OR'd together.
neilt6 0:abc480f8eeab 297 */
neilt6 0:abc480f8eeab 298 void clearAlertFlags(char flags);
neilt6 0:abc480f8eeab 299
neilt6 0:abc480f8eeab 300 /** Get the current cell voltage measurement of the MAX17048
neilt6 10:4f695111eb54 301 *
neilt6 10:4f695111eb54 302 * @returns The cell voltage measurement as a float.
neilt6 10:4f695111eb54 303 */
neilt6 5:ffce4fe12ed1 304 float vcell();
neilt6 0:abc480f8eeab 305
neilt6 4:e61b2723d2cf 306 /** Get the current state of charge measurement of the MAX17048 as a float
neilt6 0:abc480f8eeab 307 *
neilt6 0:abc480f8eeab 308 * @returns The state of charge measurement as a float.
neilt6 0:abc480f8eeab 309 */
neilt6 5:ffce4fe12ed1 310 float soc();
neilt6 0:abc480f8eeab 311
neilt6 4:e61b2723d2cf 312 /** Get the current state of charge measurement of the MAX17048 as an int
neilt6 4:e61b2723d2cf 313 *
neilt6 4:e61b2723d2cf 314 * @returns The state of charge measurement as an int.
neilt6 4:e61b2723d2cf 315 */
neilt6 5:ffce4fe12ed1 316 int soc_int();
neilt6 4:e61b2723d2cf 317
neilt6 0:abc480f8eeab 318 /** Get the current C rate measurement of the MAX17048
neilt6 0:abc480f8eeab 319 *
neilt6 0:abc480f8eeab 320 * @returns The C rate measurement as a float.
neilt6 0:abc480f8eeab 321 */
neilt6 5:ffce4fe12ed1 322 float crate();
neilt6 0:abc480f8eeab 323
neilt6 4:e61b2723d2cf 324 #ifdef MBED_OPERATORS
neilt6 4:e61b2723d2cf 325 /** A shorthand for soc()
neilt6 4:e61b2723d2cf 326 *
neilt6 4:e61b2723d2cf 327 * @returns The state of charge measurement as a float.
neilt6 4:e61b2723d2cf 328 */
neilt6 5:ffce4fe12ed1 329 operator float();
neilt6 4:e61b2723d2cf 330
neilt6 5:ffce4fe12ed1 331 /** A shorthand for soc_int()
neilt6 4:e61b2723d2cf 332 *
neilt6 4:e61b2723d2cf 333 * @returns The state of charge measurement as an int.
neilt6 4:e61b2723d2cf 334 */
neilt6 5:ffce4fe12ed1 335 operator int();
neilt6 4:e61b2723d2cf 336 #endif
neilt6 4:e61b2723d2cf 337
neilt6 0:abc480f8eeab 338 private:
neilt6 2:0a98e081b48c 339 //I2C register addresses
neilt6 2:0a98e081b48c 340 enum Register {
neilt6 2:0a98e081b48c 341 REG_VCELL = 0x02,
neilt6 2:0a98e081b48c 342 REG_SOC = 0x04,
neilt6 2:0a98e081b48c 343 REG_MODE = 0x06,
neilt6 2:0a98e081b48c 344 REG_VERSION = 0x08,
neilt6 2:0a98e081b48c 345 REG_HIBRT = 0x0A,
neilt6 2:0a98e081b48c 346 REG_CONFIG = 0x0C,
neilt6 2:0a98e081b48c 347 REG_VALRT = 0x14,
neilt6 2:0a98e081b48c 348 REG_CRATE = 0x16,
neilt6 2:0a98e081b48c 349 REG_VRESET_ID = 0x18,
neilt6 2:0a98e081b48c 350 REG_STATUS = 0x1A,
neilt6 2:0a98e081b48c 351 REG_TABLE = 0x40,
neilt6 2:0a98e081b48c 352 REG_CMD = 0xFE
neilt6 2:0a98e081b48c 353 };
neilt6 2:0a98e081b48c 354
neilt6 2:0a98e081b48c 355 //Member constants
neilt6 8:65c889800b3a 356 static const int m_ADDR;
neilt6 2:0a98e081b48c 357
neilt6 2:0a98e081b48c 358 //Member variables
neilt6 2:0a98e081b48c 359 I2C m_I2C;
neilt6 2:0a98e081b48c 360
neilt6 2:0a98e081b48c 361 //Internal functions
neilt6 2:0a98e081b48c 362 unsigned short read(char reg);
neilt6 2:0a98e081b48c 363 void write(char reg, unsigned short data);
neilt6 0:abc480f8eeab 364 };
neilt6 0:abc480f8eeab 365
neilt6 0:abc480f8eeab 366 #endif