Thiago . / ADXL345

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Fork of ADXL345 by Ailton Siqueira Jr

ADXL345.cpp@3:6e7ab70bfe34, 2015-08-05 (annotated)

Committer:
Jamess
Date:
Wed Aug 05 18:38:31 2015 +0000
Revision:
3:6e7ab70bfe34
Parent:
0:bd8f0f20f433 
whats change?

Who changed what in which revision?

UserRevisionLine numberNew contents of line
aberk 0:bd8f0f20f433 1 /**
aberk 0:bd8f0f20f433 2 * @author Aaron Berk
aberk 0:bd8f0f20f433 3 *
aberk 0:bd8f0f20f433 4 * @section LICENSE
aberk 0:bd8f0f20f433 5 *
aberk 0:bd8f0f20f433 6 * Copyright (c) 2010 ARM Limited
aberk 0:bd8f0f20f433 7 *
aberk 0:bd8f0f20f433 8 * Permission is hereby granted, free of charge, to any person obtaining a copy
aberk 0:bd8f0f20f433 9 * of this software and associated documentation files (the "Software"), to deal
aberk 0:bd8f0f20f433 10 * in the Software without restriction, including without limitation the rights
aberk 0:bd8f0f20f433 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
aberk 0:bd8f0f20f433 12 * copies of the Software, and to permit persons to whom the Software is
aberk 0:bd8f0f20f433 13 * furnished to do so, subject to the following conditions:
aberk 0:bd8f0f20f433 14 *
aberk 0:bd8f0f20f433 15 * The above copyright notice and this permission notice shall be included in
aberk 0:bd8f0f20f433 16 * all copies or substantial portions of the Software.
aberk 0:bd8f0f20f433 17 *
aberk 0:bd8f0f20f433 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
aberk 0:bd8f0f20f433 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
aberk 0:bd8f0f20f433 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
aberk 0:bd8f0f20f433 21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
aberk 0:bd8f0f20f433 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
aberk 0:bd8f0f20f433 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
aberk 0:bd8f0f20f433 24 * THE SOFTWARE.
aberk 0:bd8f0f20f433 25 *
aberk 0:bd8f0f20f433 26 * @section DESCRIPTION
aberk 0:bd8f0f20f433 27 *
aberk 0:bd8f0f20f433 28 * ADXL345, triple axis, digital interface, accelerometer.
aberk 0:bd8f0f20f433 29 *
aberk 0:bd8f0f20f433 30 * Datasheet:
aberk 0:bd8f0f20f433 31 *
aberk 0:bd8f0f20f433 32 * http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf
aberk 0:bd8f0f20f433 33 */
aberk 0:bd8f0f20f433 34
aberk 0:bd8f0f20f433 35 /**
aberk 0:bd8f0f20f433 36 * Includes
aberk 0:bd8f0f20f433 37 */
aberk 0:bd8f0f20f433 38 #include "ADXL345.h"
aberk 0:bd8f0f20f433 39
aberk 0:bd8f0f20f433 40 ADXL345::ADXL345(PinName mosi,
aberk 0:bd8f0f20f433 41 PinName miso,
aberk 0:bd8f0f20f433 42 PinName sck,
aberk 0:bd8f0f20f433 43 PinName cs) : spi_(mosi, miso, sck), nCS_(cs) {
aberk 0:bd8f0f20f433 44
aberk 0:bd8f0f20f433 45 //2MHz, allowing us to use the fastest data rates.
aberk 0:bd8f0f20f433 46 spi_.frequency(2000000);
aberk 0:bd8f0f20f433 47 spi_.format(8,3);
aberk 0:bd8f0f20f433 48
aberk 0:bd8f0f20f433 49 nCS_ = 1;
aberk 0:bd8f0f20f433 50
aberk 0:bd8f0f20f433 51 wait_us(500);
aberk 0:bd8f0f20f433 52
aberk 0:bd8f0f20f433 53 }
aberk 0:bd8f0f20f433 54
aberk 0:bd8f0f20f433 55 int ADXL345::getDevId(void) {
aberk 0:bd8f0f20f433 56
aberk 0:bd8f0f20f433 57 return oneByteRead(ADXL345_DEVID_REG);
aberk 0:bd8f0f20f433 58
aberk 0:bd8f0f20f433 59 }
aberk 0:bd8f0f20f433 60
aberk 0:bd8f0f20f433 61 int ADXL345::getTapThreshold(void) {
aberk 0:bd8f0f20f433 62
aberk 0:bd8f0f20f433 63 return oneByteRead(ADXL345_THRESH_TAP_REG);
aberk 0:bd8f0f20f433 64
aberk 0:bd8f0f20f433 65 }
aberk 0:bd8f0f20f433 66
aberk 0:bd8f0f20f433 67 void ADXL345::setTapThreshold(int threshold) {
aberk 0:bd8f0f20f433 68
aberk 0:bd8f0f20f433 69 oneByteWrite(ADXL345_THRESH_TAP_REG, threshold);
aberk 0:bd8f0f20f433 70
aberk 0:bd8f0f20f433 71 }
aberk 0:bd8f0f20f433 72
aberk 0:bd8f0f20f433 73 int ADXL345::getOffset(int axis) {
aberk 0:bd8f0f20f433 74
aberk 0:bd8f0f20f433 75 int address = 0;
aberk 0:bd8f0f20f433 76
aberk 0:bd8f0f20f433 77 if (axis == ADXL345_X) {
aberk 0:bd8f0f20f433 78 address = ADXL345_OFSX_REG;
aberk 0:bd8f0f20f433 79 } else if (axis == ADXL345_Y) {
aberk 0:bd8f0f20f433 80 address = ADXL345_OFSY_REG;
aberk 0:bd8f0f20f433 81 } else if (axis == ADXL345_Z) {
aberk 0:bd8f0f20f433 82 address = ADXL345_OFSZ_REG;
aberk 0:bd8f0f20f433 83 }
aberk 0:bd8f0f20f433 84
aberk 0:bd8f0f20f433 85 return oneByteRead(address);
aberk 0:bd8f0f20f433 86
aberk 0:bd8f0f20f433 87 }
aberk 0:bd8f0f20f433 88
aberk 0:bd8f0f20f433 89 void ADXL345::setOffset(int axis, char offset) {
aberk 0:bd8f0f20f433 90
aberk 0:bd8f0f20f433 91 int address = 0;
aberk 0:bd8f0f20f433 92
aberk 0:bd8f0f20f433 93 if (axis == ADXL345_X) {
aberk 0:bd8f0f20f433 94 address = ADXL345_OFSX_REG;
aberk 0:bd8f0f20f433 95 } else if (axis == ADXL345_Y) {
aberk 0:bd8f0f20f433 96 address = ADXL345_OFSY_REG;
aberk 0:bd8f0f20f433 97 } else if (axis == ADXL345_Z) {
aberk 0:bd8f0f20f433 98 address = ADXL345_OFSZ_REG;
aberk 0:bd8f0f20f433 99 }
aberk 0:bd8f0f20f433 100
aberk 0:bd8f0f20f433 101 return oneByteWrite(address, offset);
aberk 0:bd8f0f20f433 102
aberk 0:bd8f0f20f433 103 }
aberk 0:bd8f0f20f433 104
aberk 0:bd8f0f20f433 105 int ADXL345::getTapDuration(void) {
aberk 0:bd8f0f20f433 106
aberk 0:bd8f0f20f433 107 return oneByteRead(ADXL345_DUR_REG)*625;
aberk 0:bd8f0f20f433 108
aberk 0:bd8f0f20f433 109 }
aberk 0:bd8f0f20f433 110
aberk 0:bd8f0f20f433 111 void ADXL345::setTapDuration(int duration_us) {
aberk 0:bd8f0f20f433 112
aberk 0:bd8f0f20f433 113 int tapDuration = duration_us / 625;
aberk 0:bd8f0f20f433 114
aberk 0:bd8f0f20f433 115 oneByteWrite(ADXL345_DUR_REG, tapDuration);
aberk 0:bd8f0f20f433 116
aberk 0:bd8f0f20f433 117 }
aberk 0:bd8f0f20f433 118
aberk 0:bd8f0f20f433 119 float ADXL345::getTapLatency(void) {
aberk 0:bd8f0f20f433 120
aberk 0:bd8f0f20f433 121 return oneByteRead(ADXL345_LATENT_REG)*1.25;
aberk 0:bd8f0f20f433 122
aberk 0:bd8f0f20f433 123 }
aberk 0:bd8f0f20f433 124
aberk 0:bd8f0f20f433 125 void ADXL345::setTapLatency(int latency_ms) {
aberk 0:bd8f0f20f433 126
aberk 0:bd8f0f20f433 127 int tapLatency = latency_ms / 1.25;
aberk 0:bd8f0f20f433 128
aberk 0:bd8f0f20f433 129 oneByteWrite(ADXL345_LATENT_REG, tapLatency);
aberk 0:bd8f0f20f433 130
aberk 0:bd8f0f20f433 131 }
aberk 0:bd8f0f20f433 132
aberk 0:bd8f0f20f433 133 float ADXL345::getWindowTime(void) {
aberk 0:bd8f0f20f433 134
aberk 0:bd8f0f20f433 135 return oneByteRead(ADXL345_WINDOW_REG)*1.25;
aberk 0:bd8f0f20f433 136
aberk 0:bd8f0f20f433 137 }
aberk 0:bd8f0f20f433 138
aberk 0:bd8f0f20f433 139 void ADXL345::setWindowTime(int window_ms) {
aberk 0:bd8f0f20f433 140
aberk 0:bd8f0f20f433 141 int windowTime = window_ms / 1.25;
aberk 0:bd8f0f20f433 142
aberk 0:bd8f0f20f433 143 oneByteWrite(ADXL345_WINDOW_REG, windowTime);
aberk 0:bd8f0f20f433 144
aberk 0:bd8f0f20f433 145 }
aberk 0:bd8f0f20f433 146
aberk 0:bd8f0f20f433 147 int ADXL345::getActivityThreshold(void) {
aberk 0:bd8f0f20f433 148
aberk 0:bd8f0f20f433 149 return oneByteRead(ADXL345_THRESH_ACT_REG);
aberk 0:bd8f0f20f433 150
aberk 0:bd8f0f20f433 151 }
aberk 0:bd8f0f20f433 152
aberk 0:bd8f0f20f433 153 void ADXL345::setActivityThreshold(int threshold) {
aberk 0:bd8f0f20f433 154
aberk 0:bd8f0f20f433 155 oneByteWrite(ADXL345_THRESH_ACT_REG, threshold);
aberk 0:bd8f0f20f433 156
aberk 0:bd8f0f20f433 157 }
aberk 0:bd8f0f20f433 158
aberk 0:bd8f0f20f433 159 int ADXL345::getInactivityThreshold(void) {
aberk 0:bd8f0f20f433 160
aberk 0:bd8f0f20f433 161 return oneByteRead(ADXL345_THRESH_INACT_REG);
aberk 0:bd8f0f20f433 162
aberk 0:bd8f0f20f433 163 }
aberk 0:bd8f0f20f433 164
aberk 0:bd8f0f20f433 165 void ADXL345::setInactivityThreshold(int threshold) {
aberk 0:bd8f0f20f433 166
aberk 0:bd8f0f20f433 167 return oneByteWrite(ADXL345_THRESH_INACT_REG, threshold);
aberk 0:bd8f0f20f433 168
aberk 0:bd8f0f20f433 169 }
aberk 0:bd8f0f20f433 170
aberk 0:bd8f0f20f433 171 int ADXL345::getTimeInactivity(void) {
aberk 0:bd8f0f20f433 172
aberk 0:bd8f0f20f433 173 return oneByteRead(ADXL345_TIME_INACT_REG);
aberk 0:bd8f0f20f433 174
aberk 0:bd8f0f20f433 175 }
aberk 0:bd8f0f20f433 176
aberk 0:bd8f0f20f433 177 void ADXL345::setTimeInactivity(int timeInactivity) {
aberk 0:bd8f0f20f433 178
aberk 0:bd8f0f20f433 179 oneByteWrite(ADXL345_TIME_INACT_REG, timeInactivity);
aberk 0:bd8f0f20f433 180
aberk 0:bd8f0f20f433 181 }
aberk 0:bd8f0f20f433 182
aberk 0:bd8f0f20f433 183 int ADXL345::getActivityInactivityControl(void) {
aberk 0:bd8f0f20f433 184
aberk 0:bd8f0f20f433 185 return oneByteRead(ADXL345_ACT_INACT_CTL_REG);
aberk 0:bd8f0f20f433 186
aberk 0:bd8f0f20f433 187 }
aberk 0:bd8f0f20f433 188
aberk 0:bd8f0f20f433 189 void ADXL345::setActivityInactivityControl(int settings) {
aberk 0:bd8f0f20f433 190
aberk 0:bd8f0f20f433 191 oneByteWrite(ADXL345_ACT_INACT_CTL_REG, settings);
aberk 0:bd8f0f20f433 192
aberk 0:bd8f0f20f433 193 }
aberk 0:bd8f0f20f433 194
aberk 0:bd8f0f20f433 195 int ADXL345::getFreefallThreshold(void) {
aberk 0:bd8f0f20f433 196
aberk 0:bd8f0f20f433 197 return oneByteRead(ADXL345_THRESH_FF_REG);
aberk 0:bd8f0f20f433 198
aberk 0:bd8f0f20f433 199 }
aberk 0:bd8f0f20f433 200
aberk 0:bd8f0f20f433 201 void ADXL345::setFreefallThreshold(int threshold) {
aberk 0:bd8f0f20f433 202
aberk 0:bd8f0f20f433 203 oneByteWrite(ADXL345_THRESH_FF_REG, threshold);
aberk 0:bd8f0f20f433 204
aberk 0:bd8f0f20f433 205 }
aberk 0:bd8f0f20f433 206
aberk 0:bd8f0f20f433 207 int ADXL345::getFreefallTime(void) {
aberk 0:bd8f0f20f433 208
aberk 0:bd8f0f20f433 209 return oneByteRead(ADXL345_TIME_FF_REG)*5;
aberk 0:bd8f0f20f433 210
aberk 0:bd8f0f20f433 211 }
aberk 0:bd8f0f20f433 212
aberk 0:bd8f0f20f433 213 void ADXL345::setFreefallTime(int freefallTime_ms) {
aberk 0:bd8f0f20f433 214
aberk 0:bd8f0f20f433 215 int freefallTime = freefallTime_ms / 5;
aberk 0:bd8f0f20f433 216
aberk 0:bd8f0f20f433 217 oneByteWrite(ADXL345_TIME_FF_REG, freefallTime);
aberk 0:bd8f0f20f433 218
aberk 0:bd8f0f20f433 219 }
aberk 0:bd8f0f20f433 220
aberk 0:bd8f0f20f433 221 int ADXL345::getTapAxisControl(void) {
aberk 0:bd8f0f20f433 222
aberk 0:bd8f0f20f433 223 return oneByteRead(ADXL345_TAP_AXES_REG);
aberk 0:bd8f0f20f433 224
aberk 0:bd8f0f20f433 225 }
aberk 0:bd8f0f20f433 226
aberk 0:bd8f0f20f433 227 void ADXL345::setTapAxisControl(int settings) {
aberk 0:bd8f0f20f433 228
aberk 0:bd8f0f20f433 229 oneByteWrite(ADXL345_TAP_AXES_REG, settings);
aberk 0:bd8f0f20f433 230
aberk 0:bd8f0f20f433 231 }
aberk 0:bd8f0f20f433 232
aberk 0:bd8f0f20f433 233 int ADXL345::getTapSource(void) {
aberk 0:bd8f0f20f433 234
aberk 0:bd8f0f20f433 235 return oneByteRead(ADXL345_ACT_TAP_STATUS_REG);
aberk 0:bd8f0f20f433 236
aberk 0:bd8f0f20f433 237 }
aberk 0:bd8f0f20f433 238
aberk 0:bd8f0f20f433 239 void ADXL345::setPowerMode(char mode) {
aberk 0:bd8f0f20f433 240
aberk 0:bd8f0f20f433 241 //Get the current register contents, so we don't clobber the rate value.
aberk 0:bd8f0f20f433 242 char registerContents = oneByteRead(ADXL345_BW_RATE_REG);
aberk 0:bd8f0f20f433 243
aberk 0:bd8f0f20f433 244 registerContents = (mode << 4) | registerContents;
aberk 0:bd8f0f20f433 245
aberk 0:bd8f0f20f433 246 oneByteWrite(ADXL345_BW_RATE_REG, registerContents);
aberk 0:bd8f0f20f433 247
aberk 0:bd8f0f20f433 248 }
aberk 0:bd8f0f20f433 249
aberk 0:bd8f0f20f433 250 int ADXL345::getPowerControl(void) {
aberk 0:bd8f0f20f433 251
aberk 0:bd8f0f20f433 252 return oneByteRead(ADXL345_POWER_CTL_REG);
aberk 0:bd8f0f20f433 253
aberk 0:bd8f0f20f433 254 }
aberk 0:bd8f0f20f433 255
aberk 0:bd8f0f20f433 256 void ADXL345::setPowerControl(int settings) {
aberk 0:bd8f0f20f433 257
aberk 0:bd8f0f20f433 258 oneByteWrite(ADXL345_POWER_CTL_REG, settings);
aberk 0:bd8f0f20f433 259
aberk 0:bd8f0f20f433 260 }
aberk 0:bd8f0f20f433 261
aberk 0:bd8f0f20f433 262 int ADXL345::getInterruptEnableControl(void) {
aberk 0:bd8f0f20f433 263
aberk 0:bd8f0f20f433 264 return oneByteRead(ADXL345_INT_ENABLE_REG);
aberk 0:bd8f0f20f433 265
aberk 0:bd8f0f20f433 266 }
aberk 0:bd8f0f20f433 267
aberk 0:bd8f0f20f433 268 void ADXL345::setInterruptEnableControl(int settings) {
aberk 0:bd8f0f20f433 269
aberk 0:bd8f0f20f433 270 oneByteWrite(ADXL345_INT_ENABLE_REG, settings);
aberk 0:bd8f0f20f433 271
aberk 0:bd8f0f20f433 272 }
aberk 0:bd8f0f20f433 273
aberk 0:bd8f0f20f433 274 int ADXL345::getInterruptMappingControl(void) {
aberk 0:bd8f0f20f433 275
aberk 0:bd8f0f20f433 276 return oneByteRead(ADXL345_INT_MAP_REG);
aberk 0:bd8f0f20f433 277
aberk 0:bd8f0f20f433 278 }
aberk 0:bd8f0f20f433 279
aberk 0:bd8f0f20f433 280 void ADXL345::setInterruptMappingControl(int settings) {
aberk 0:bd8f0f20f433 281
aberk 0:bd8f0f20f433 282 oneByteWrite(ADXL345_INT_MAP_REG, settings);
aberk 0:bd8f0f20f433 283
aberk 0:bd8f0f20f433 284 }
aberk 0:bd8f0f20f433 285
aberk 0:bd8f0f20f433 286 int ADXL345::getInterruptSource(void){
aberk 0:bd8f0f20f433 287
aberk 0:bd8f0f20f433 288 return oneByteRead(ADXL345_INT_SOURCE_REG);
aberk 0:bd8f0f20f433 289
aberk 0:bd8f0f20f433 290 }
aberk 0:bd8f0f20f433 291
aberk 0:bd8f0f20f433 292 int ADXL345::getDataFormatControl(void){
aberk 0:bd8f0f20f433 293
aberk 0:bd8f0f20f433 294 return oneByteRead(ADXL345_DATA_FORMAT_REG);
aberk 0:bd8f0f20f433 295
aberk 0:bd8f0f20f433 296 }
aberk 0:bd8f0f20f433 297
aberk 0:bd8f0f20f433 298 void ADXL345::setDataFormatControl(int settings){
aberk 0:bd8f0f20f433 299
aberk 0:bd8f0f20f433 300 oneByteWrite(ADXL345_DATA_FORMAT_REG, settings);
aberk 0:bd8f0f20f433 301
aberk 0:bd8f0f20f433 302 }
aberk 0:bd8f0f20f433 303
aberk 0:bd8f0f20f433 304 void ADXL345::setDataRate(int rate) {
aberk 0:bd8f0f20f433 305
aberk 0:bd8f0f20f433 306 //Get the current register contents, so we don't clobber the power bit.
aberk 0:bd8f0f20f433 307 char registerContents = oneByteRead(ADXL345_BW_RATE_REG);
aberk 0:bd8f0f20f433 308
aberk 0:bd8f0f20f433 309 registerContents &= 0x10;
aberk 0:bd8f0f20f433 310 registerContents |= rate;
aberk 0:bd8f0f20f433 311
aberk 0:bd8f0f20f433 312 oneByteWrite(ADXL345_BW_RATE_REG, registerContents);
aberk 0:bd8f0f20f433 313
aberk 0:bd8f0f20f433 314 }
aberk 0:bd8f0f20f433 315
aberk 0:bd8f0f20f433 316 void ADXL345::getOutput(int* readings){
aberk 0:bd8f0f20f433 317
aberk 0:bd8f0f20f433 318 char buffer[6];
aberk 0:bd8f0f20f433 319
aberk 0:bd8f0f20f433 320 multiByteRead(ADXL345_DATAX0_REG, buffer, 6);
aberk 0:bd8f0f20f433 321
aberk 0:bd8f0f20f433 322 readings[0] = (int)buffer[1] << 8 | (int)buffer[0];
aberk 0:bd8f0f20f433 323 readings[1] = (int)buffer[3] << 8 | (int)buffer[2];
aberk 0:bd8f0f20f433 324 readings[2] = (int)buffer[5] << 8 | (int)buffer[4];
aberk 0:bd8f0f20f433 325
aberk 0:bd8f0f20f433 326 }
aberk 0:bd8f0f20f433 327
aberk 0:bd8f0f20f433 328 int ADXL345::getFifoControl(void){
aberk 0:bd8f0f20f433 329
aberk 0:bd8f0f20f433 330 return oneByteRead(ADXL345_FIFO_CTL);
aberk 0:bd8f0f20f433 331
aberk 0:bd8f0f20f433 332 }
aberk 0:bd8f0f20f433 333
aberk 0:bd8f0f20f433 334 void ADXL345::setFifoControl(int settings){
aberk 0:bd8f0f20f433 335
aberk 0:bd8f0f20f433 336 oneByteWrite(ADXL345_FIFO_STATUS, settings);
aberk 0:bd8f0f20f433 337
aberk 0:bd8f0f20f433 338 }
aberk 0:bd8f0f20f433 339
aberk 0:bd8f0f20f433 340 int ADXL345::getFifoStatus(void){
aberk 0:bd8f0f20f433 341
aberk 0:bd8f0f20f433 342 return oneByteRead(ADXL345_FIFO_STATUS);
aberk 0:bd8f0f20f433 343
aberk 0:bd8f0f20f433 344 }
aberk 0:bd8f0f20f433 345
aberk 0:bd8f0f20f433 346 int ADXL345::oneByteRead(int address) {
aberk 0:bd8f0f20f433 347
aberk 0:bd8f0f20f433 348 int tx = (ADXL345_SPI_READ | (address & 0x3F));
aberk 0:bd8f0f20f433 349 int rx = 0;
aberk 0:bd8f0f20f433 350
aberk 0:bd8f0f20f433 351 nCS_ = 0;
aberk 0:bd8f0f20f433 352 //Send address to read from.
aberk 0:bd8f0f20f433 353 spi_.write(tx);
aberk 0:bd8f0f20f433 354 //Read back contents of address.
aberk 0:bd8f0f20f433 355 rx = spi_.write(0x00);
aberk 0:bd8f0f20f433 356 nCS_ = 1;
aberk 0:bd8f0f20f433 357
aberk 0:bd8f0f20f433 358 return rx;
aberk 0:bd8f0f20f433 359
aberk 0:bd8f0f20f433 360 }
aberk 0:bd8f0f20f433 361
aberk 0:bd8f0f20f433 362 void ADXL345::oneByteWrite(int address, char data) {
aberk 0:bd8f0f20f433 363
aberk 0:bd8f0f20f433 364 int tx = (ADXL345_SPI_WRITE | (address & 0x3F));
aberk 0:bd8f0f20f433 365
aberk 0:bd8f0f20f433 366 nCS_ = 0;
aberk 0:bd8f0f20f433 367 //Send address to write to.
aberk 0:bd8f0f20f433 368 spi_.write(tx);
aberk 0:bd8f0f20f433 369 //Send data to be written.
aberk 0:bd8f0f20f433 370 spi_.write(data);
aberk 0:bd8f0f20f433 371 nCS_ = 1;
aberk 0:bd8f0f20f433 372
aberk 0:bd8f0f20f433 373 }
aberk 0:bd8f0f20f433 374
aberk 0:bd8f0f20f433 375 void ADXL345::multiByteRead(int startAddress, char* buffer, int size) {
aberk 0:bd8f0f20f433 376
aberk 0:bd8f0f20f433 377 int tx = (ADXL345_SPI_READ | ADXL345_MULTI_BYTE | (startAddress & 0x3F));
aberk 0:bd8f0f20f433 378
aberk 0:bd8f0f20f433 379 nCS_ = 0;
aberk 0:bd8f0f20f433 380 //Send address to start reading from.
aberk 0:bd8f0f20f433 381 spi_.write(tx);
aberk 0:bd8f0f20f433 382
aberk 0:bd8f0f20f433 383 for (int i = 0; i < size; i++) {
aberk 0:bd8f0f20f433 384 buffer[i] = spi_.write(0x00);
aberk 0:bd8f0f20f433 385 }
aberk 0:bd8f0f20f433 386
aberk 0:bd8f0f20f433 387 nCS_ = 1;
aberk 0:bd8f0f20f433 388
aberk 0:bd8f0f20f433 389 }
aberk 0:bd8f0f20f433 390
aberk 0:bd8f0f20f433 391 void ADXL345::multiByteWrite(int startAddress, char* buffer, int size) {
aberk 0:bd8f0f20f433 392
aberk 0:bd8f0f20f433 393 int tx = (ADXL345_SPI_WRITE | ADXL345_MULTI_BYTE | (startAddress & 0x3F));
aberk 0:bd8f0f20f433 394
aberk 0:bd8f0f20f433 395 nCS_ = 0;
aberk 0:bd8f0f20f433 396 //Send address to start reading from.
aberk 0:bd8f0f20f433 397 spi_.write(tx);
aberk 0:bd8f0f20f433 398
aberk 0:bd8f0f20f433 399 for (int i = 0; i < size; i++) {
aberk 0:bd8f0f20f433 400 buffer[i] = spi_.write(0x00);
aberk 0:bd8f0f20f433 401 }
aberk 0:bd8f0f20f433 402
aberk 0:bd8f0f20f433 403 nCS_ = 1;
aberk 0:bd8f0f20f433 404
aberk 0:bd8f0f20f433 405 }