teste
ADXL345_I2C.cpp@0:a5a2383a6e2f, 2010-10-31 (annotated)
- Committer:
- goncaloc
- Date:
- Sun Oct 31 10:59:35 2010 +0000
- Revision:
- 0:a5a2383a6e2f
0v0
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
goncaloc | 0:a5a2383a6e2f | 1 | /** |
goncaloc | 0:a5a2383a6e2f | 2 | * @author Aaron Berk |
goncaloc | 0:a5a2383a6e2f | 3 | * |
goncaloc | 0:a5a2383a6e2f | 4 | * @section LICENSE |
goncaloc | 0:a5a2383a6e2f | 5 | * |
goncaloc | 0:a5a2383a6e2f | 6 | * Copyright (c) 2010 ARM Limited |
goncaloc | 0:a5a2383a6e2f | 7 | * |
goncaloc | 0:a5a2383a6e2f | 8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
goncaloc | 0:a5a2383a6e2f | 9 | * of this software and associated documentation files (the "Software"), to deal |
goncaloc | 0:a5a2383a6e2f | 10 | * in the Software without restriction, including without limitation the rights |
goncaloc | 0:a5a2383a6e2f | 11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
goncaloc | 0:a5a2383a6e2f | 12 | * copies of the Software, and to permit persons to whom the Software is |
goncaloc | 0:a5a2383a6e2f | 13 | * furnished to do so, subject to the following conditions: |
goncaloc | 0:a5a2383a6e2f | 14 | * |
goncaloc | 0:a5a2383a6e2f | 15 | * The above copyright notice and this permission notice shall be included in |
goncaloc | 0:a5a2383a6e2f | 16 | * all copies or substantial portions of the Software. |
goncaloc | 0:a5a2383a6e2f | 17 | * |
goncaloc | 0:a5a2383a6e2f | 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
goncaloc | 0:a5a2383a6e2f | 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
goncaloc | 0:a5a2383a6e2f | 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
goncaloc | 0:a5a2383a6e2f | 21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
goncaloc | 0:a5a2383a6e2f | 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
goncaloc | 0:a5a2383a6e2f | 23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
goncaloc | 0:a5a2383a6e2f | 24 | * THE SOFTWARE. |
goncaloc | 0:a5a2383a6e2f | 25 | * |
goncaloc | 0:a5a2383a6e2f | 26 | * @section DESCRIPTION |
goncaloc | 0:a5a2383a6e2f | 27 | * |
goncaloc | 0:a5a2383a6e2f | 28 | * ADXL345, triple axis, digital interface, accelerometer. |
goncaloc | 0:a5a2383a6e2f | 29 | * |
goncaloc | 0:a5a2383a6e2f | 30 | * Datasheet: |
goncaloc | 0:a5a2383a6e2f | 31 | * |
goncaloc | 0:a5a2383a6e2f | 32 | * http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf |
goncaloc | 0:a5a2383a6e2f | 33 | */ |
goncaloc | 0:a5a2383a6e2f | 34 | |
goncaloc | 0:a5a2383a6e2f | 35 | /** |
goncaloc | 0:a5a2383a6e2f | 36 | * Includes |
goncaloc | 0:a5a2383a6e2f | 37 | */ |
goncaloc | 0:a5a2383a6e2f | 38 | #include "ADXL345_I2C.h" |
goncaloc | 0:a5a2383a6e2f | 39 | |
goncaloc | 0:a5a2383a6e2f | 40 | ADXL345::ADXL345(PinName sda, PinName scl) { |
goncaloc | 0:a5a2383a6e2f | 41 | |
goncaloc | 0:a5a2383a6e2f | 42 | i2c_ = new I2C(sda, scl); |
goncaloc | 0:a5a2383a6e2f | 43 | //100KHz, as specified by the datasheet. |
goncaloc | 0:a5a2383a6e2f | 44 | i2c_->frequency(100000); |
goncaloc | 0:a5a2383a6e2f | 45 | //2MHz, allowing us to use the fastest data rates. |
goncaloc | 0:a5a2383a6e2f | 46 | |
goncaloc | 0:a5a2383a6e2f | 47 | wait_us(500); |
goncaloc | 0:a5a2383a6e2f | 48 | |
goncaloc | 0:a5a2383a6e2f | 49 | } |
goncaloc | 0:a5a2383a6e2f | 50 | |
goncaloc | 0:a5a2383a6e2f | 51 | int ADXL345::getDevId(void) { |
goncaloc | 0:a5a2383a6e2f | 52 | |
goncaloc | 0:a5a2383a6e2f | 53 | return oneByteRead(ADXL345_DEVID_REG); |
goncaloc | 0:a5a2383a6e2f | 54 | |
goncaloc | 0:a5a2383a6e2f | 55 | } |
goncaloc | 0:a5a2383a6e2f | 56 | |
goncaloc | 0:a5a2383a6e2f | 57 | int ADXL345::getTapThreshold(void) { |
goncaloc | 0:a5a2383a6e2f | 58 | |
goncaloc | 0:a5a2383a6e2f | 59 | return oneByteRead(ADXL345_THRESH_TAP_REG); |
goncaloc | 0:a5a2383a6e2f | 60 | |
goncaloc | 0:a5a2383a6e2f | 61 | } |
goncaloc | 0:a5a2383a6e2f | 62 | |
goncaloc | 0:a5a2383a6e2f | 63 | void ADXL345::setTapThreshold(int threshold) { |
goncaloc | 0:a5a2383a6e2f | 64 | |
goncaloc | 0:a5a2383a6e2f | 65 | oneByteWrite(ADXL345_THRESH_TAP_REG, threshold); |
goncaloc | 0:a5a2383a6e2f | 66 | |
goncaloc | 0:a5a2383a6e2f | 67 | } |
goncaloc | 0:a5a2383a6e2f | 68 | |
goncaloc | 0:a5a2383a6e2f | 69 | int ADXL345::getOffset(int axis) { |
goncaloc | 0:a5a2383a6e2f | 70 | |
goncaloc | 0:a5a2383a6e2f | 71 | int address = 0; |
goncaloc | 0:a5a2383a6e2f | 72 | |
goncaloc | 0:a5a2383a6e2f | 73 | if (axis == ADXL345_X) { |
goncaloc | 0:a5a2383a6e2f | 74 | address = ADXL345_OFSX_REG; |
goncaloc | 0:a5a2383a6e2f | 75 | } else if (axis == ADXL345_Y) { |
goncaloc | 0:a5a2383a6e2f | 76 | address = ADXL345_OFSY_REG; |
goncaloc | 0:a5a2383a6e2f | 77 | } else if (axis == ADXL345_Z) { |
goncaloc | 0:a5a2383a6e2f | 78 | address = ADXL345_OFSZ_REG; |
goncaloc | 0:a5a2383a6e2f | 79 | } |
goncaloc | 0:a5a2383a6e2f | 80 | |
goncaloc | 0:a5a2383a6e2f | 81 | return oneByteRead(address); |
goncaloc | 0:a5a2383a6e2f | 82 | |
goncaloc | 0:a5a2383a6e2f | 83 | } |
goncaloc | 0:a5a2383a6e2f | 84 | |
goncaloc | 0:a5a2383a6e2f | 85 | void ADXL345::setOffset(int axis, char offset) { |
goncaloc | 0:a5a2383a6e2f | 86 | |
goncaloc | 0:a5a2383a6e2f | 87 | int address = 0; |
goncaloc | 0:a5a2383a6e2f | 88 | |
goncaloc | 0:a5a2383a6e2f | 89 | if (axis == ADXL345_X) { |
goncaloc | 0:a5a2383a6e2f | 90 | address = ADXL345_OFSX_REG; |
goncaloc | 0:a5a2383a6e2f | 91 | } else if (axis == ADXL345_Y) { |
goncaloc | 0:a5a2383a6e2f | 92 | address = ADXL345_OFSY_REG; |
goncaloc | 0:a5a2383a6e2f | 93 | } else if (axis == ADXL345_Z) { |
goncaloc | 0:a5a2383a6e2f | 94 | address = ADXL345_OFSZ_REG; |
goncaloc | 0:a5a2383a6e2f | 95 | } |
goncaloc | 0:a5a2383a6e2f | 96 | |
goncaloc | 0:a5a2383a6e2f | 97 | return oneByteWrite(address, offset); |
goncaloc | 0:a5a2383a6e2f | 98 | |
goncaloc | 0:a5a2383a6e2f | 99 | } |
goncaloc | 0:a5a2383a6e2f | 100 | |
goncaloc | 0:a5a2383a6e2f | 101 | int ADXL345::getTapDuration(void) { |
goncaloc | 0:a5a2383a6e2f | 102 | |
goncaloc | 0:a5a2383a6e2f | 103 | return oneByteRead(ADXL345_DUR_REG)*625; |
goncaloc | 0:a5a2383a6e2f | 104 | |
goncaloc | 0:a5a2383a6e2f | 105 | } |
goncaloc | 0:a5a2383a6e2f | 106 | |
goncaloc | 0:a5a2383a6e2f | 107 | void ADXL345::setTapDuration(int duration_us) { |
goncaloc | 0:a5a2383a6e2f | 108 | |
goncaloc | 0:a5a2383a6e2f | 109 | int tapDuration = duration_us / 625; |
goncaloc | 0:a5a2383a6e2f | 110 | |
goncaloc | 0:a5a2383a6e2f | 111 | oneByteWrite(ADXL345_DUR_REG, tapDuration); |
goncaloc | 0:a5a2383a6e2f | 112 | |
goncaloc | 0:a5a2383a6e2f | 113 | } |
goncaloc | 0:a5a2383a6e2f | 114 | |
goncaloc | 0:a5a2383a6e2f | 115 | float ADXL345::getTapLatency(void) { |
goncaloc | 0:a5a2383a6e2f | 116 | |
goncaloc | 0:a5a2383a6e2f | 117 | return oneByteRead(ADXL345_LATENT_REG)*1.25; |
goncaloc | 0:a5a2383a6e2f | 118 | |
goncaloc | 0:a5a2383a6e2f | 119 | } |
goncaloc | 0:a5a2383a6e2f | 120 | |
goncaloc | 0:a5a2383a6e2f | 121 | void ADXL345::setTapLatency(int latency_ms) { |
goncaloc | 0:a5a2383a6e2f | 122 | |
goncaloc | 0:a5a2383a6e2f | 123 | int tapLatency = latency_ms / 1.25; |
goncaloc | 0:a5a2383a6e2f | 124 | |
goncaloc | 0:a5a2383a6e2f | 125 | oneByteWrite(ADXL345_LATENT_REG, tapLatency); |
goncaloc | 0:a5a2383a6e2f | 126 | |
goncaloc | 0:a5a2383a6e2f | 127 | } |
goncaloc | 0:a5a2383a6e2f | 128 | |
goncaloc | 0:a5a2383a6e2f | 129 | float ADXL345::getWindowTime(void) { |
goncaloc | 0:a5a2383a6e2f | 130 | |
goncaloc | 0:a5a2383a6e2f | 131 | return oneByteRead(ADXL345_WINDOW_REG)*1.25; |
goncaloc | 0:a5a2383a6e2f | 132 | |
goncaloc | 0:a5a2383a6e2f | 133 | } |
goncaloc | 0:a5a2383a6e2f | 134 | |
goncaloc | 0:a5a2383a6e2f | 135 | void ADXL345::setWindowTime(int window_ms) { |
goncaloc | 0:a5a2383a6e2f | 136 | |
goncaloc | 0:a5a2383a6e2f | 137 | int windowTime = window_ms / 1.25; |
goncaloc | 0:a5a2383a6e2f | 138 | |
goncaloc | 0:a5a2383a6e2f | 139 | oneByteWrite(ADXL345_WINDOW_REG, windowTime); |
goncaloc | 0:a5a2383a6e2f | 140 | |
goncaloc | 0:a5a2383a6e2f | 141 | } |
goncaloc | 0:a5a2383a6e2f | 142 | |
goncaloc | 0:a5a2383a6e2f | 143 | int ADXL345::getActivityThreshold(void) { |
goncaloc | 0:a5a2383a6e2f | 144 | |
goncaloc | 0:a5a2383a6e2f | 145 | return oneByteRead(ADXL345_THRESH_ACT_REG); |
goncaloc | 0:a5a2383a6e2f | 146 | |
goncaloc | 0:a5a2383a6e2f | 147 | } |
goncaloc | 0:a5a2383a6e2f | 148 | |
goncaloc | 0:a5a2383a6e2f | 149 | void ADXL345::setActivityThreshold(int threshold) { |
goncaloc | 0:a5a2383a6e2f | 150 | |
goncaloc | 0:a5a2383a6e2f | 151 | oneByteWrite(ADXL345_THRESH_ACT_REG, threshold); |
goncaloc | 0:a5a2383a6e2f | 152 | |
goncaloc | 0:a5a2383a6e2f | 153 | } |
goncaloc | 0:a5a2383a6e2f | 154 | |
goncaloc | 0:a5a2383a6e2f | 155 | int ADXL345::getInactivityThreshold(void) { |
goncaloc | 0:a5a2383a6e2f | 156 | |
goncaloc | 0:a5a2383a6e2f | 157 | return oneByteRead(ADXL345_THRESH_INACT_REG); |
goncaloc | 0:a5a2383a6e2f | 158 | |
goncaloc | 0:a5a2383a6e2f | 159 | } |
goncaloc | 0:a5a2383a6e2f | 160 | |
goncaloc | 0:a5a2383a6e2f | 161 | void ADXL345::setInactivityThreshold(int threshold) { |
goncaloc | 0:a5a2383a6e2f | 162 | |
goncaloc | 0:a5a2383a6e2f | 163 | return oneByteWrite(ADXL345_THRESH_INACT_REG, threshold); |
goncaloc | 0:a5a2383a6e2f | 164 | |
goncaloc | 0:a5a2383a6e2f | 165 | } |
goncaloc | 0:a5a2383a6e2f | 166 | |
goncaloc | 0:a5a2383a6e2f | 167 | int ADXL345::getTimeInactivity(void) { |
goncaloc | 0:a5a2383a6e2f | 168 | |
goncaloc | 0:a5a2383a6e2f | 169 | return oneByteRead(ADXL345_TIME_INACT_REG); |
goncaloc | 0:a5a2383a6e2f | 170 | |
goncaloc | 0:a5a2383a6e2f | 171 | } |
goncaloc | 0:a5a2383a6e2f | 172 | |
goncaloc | 0:a5a2383a6e2f | 173 | void ADXL345::setTimeInactivity(int timeInactivity) { |
goncaloc | 0:a5a2383a6e2f | 174 | |
goncaloc | 0:a5a2383a6e2f | 175 | oneByteWrite(ADXL345_TIME_INACT_REG, timeInactivity); |
goncaloc | 0:a5a2383a6e2f | 176 | |
goncaloc | 0:a5a2383a6e2f | 177 | } |
goncaloc | 0:a5a2383a6e2f | 178 | |
goncaloc | 0:a5a2383a6e2f | 179 | int ADXL345::getActivityInactivityControl(void) { |
goncaloc | 0:a5a2383a6e2f | 180 | |
goncaloc | 0:a5a2383a6e2f | 181 | return oneByteRead(ADXL345_ACT_INACT_CTL_REG); |
goncaloc | 0:a5a2383a6e2f | 182 | |
goncaloc | 0:a5a2383a6e2f | 183 | } |
goncaloc | 0:a5a2383a6e2f | 184 | |
goncaloc | 0:a5a2383a6e2f | 185 | void ADXL345::setActivityInactivityControl(int settings) { |
goncaloc | 0:a5a2383a6e2f | 186 | |
goncaloc | 0:a5a2383a6e2f | 187 | oneByteWrite(ADXL345_ACT_INACT_CTL_REG, settings); |
goncaloc | 0:a5a2383a6e2f | 188 | |
goncaloc | 0:a5a2383a6e2f | 189 | } |
goncaloc | 0:a5a2383a6e2f | 190 | |
goncaloc | 0:a5a2383a6e2f | 191 | int ADXL345::getFreefallThreshold(void) { |
goncaloc | 0:a5a2383a6e2f | 192 | |
goncaloc | 0:a5a2383a6e2f | 193 | return oneByteRead(ADXL345_THRESH_FF_REG); |
goncaloc | 0:a5a2383a6e2f | 194 | |
goncaloc | 0:a5a2383a6e2f | 195 | } |
goncaloc | 0:a5a2383a6e2f | 196 | |
goncaloc | 0:a5a2383a6e2f | 197 | void ADXL345::setFreefallThreshold(int threshold) { |
goncaloc | 0:a5a2383a6e2f | 198 | |
goncaloc | 0:a5a2383a6e2f | 199 | oneByteWrite(ADXL345_THRESH_FF_REG, threshold); |
goncaloc | 0:a5a2383a6e2f | 200 | |
goncaloc | 0:a5a2383a6e2f | 201 | } |
goncaloc | 0:a5a2383a6e2f | 202 | |
goncaloc | 0:a5a2383a6e2f | 203 | int ADXL345::getFreefallTime(void) { |
goncaloc | 0:a5a2383a6e2f | 204 | |
goncaloc | 0:a5a2383a6e2f | 205 | return oneByteRead(ADXL345_TIME_FF_REG)*5; |
goncaloc | 0:a5a2383a6e2f | 206 | |
goncaloc | 0:a5a2383a6e2f | 207 | } |
goncaloc | 0:a5a2383a6e2f | 208 | |
goncaloc | 0:a5a2383a6e2f | 209 | void ADXL345::setFreefallTime(int freefallTime_ms) { |
goncaloc | 0:a5a2383a6e2f | 210 | |
goncaloc | 0:a5a2383a6e2f | 211 | int freefallTime = freefallTime_ms / 5; |
goncaloc | 0:a5a2383a6e2f | 212 | |
goncaloc | 0:a5a2383a6e2f | 213 | oneByteWrite(ADXL345_TIME_FF_REG, freefallTime); |
goncaloc | 0:a5a2383a6e2f | 214 | |
goncaloc | 0:a5a2383a6e2f | 215 | } |
goncaloc | 0:a5a2383a6e2f | 216 | |
goncaloc | 0:a5a2383a6e2f | 217 | int ADXL345::getTapAxisControl(void) { |
goncaloc | 0:a5a2383a6e2f | 218 | |
goncaloc | 0:a5a2383a6e2f | 219 | return oneByteRead(ADXL345_TAP_AXES_REG); |
goncaloc | 0:a5a2383a6e2f | 220 | |
goncaloc | 0:a5a2383a6e2f | 221 | } |
goncaloc | 0:a5a2383a6e2f | 222 | |
goncaloc | 0:a5a2383a6e2f | 223 | void ADXL345::setTapAxisControl(int settings) { |
goncaloc | 0:a5a2383a6e2f | 224 | |
goncaloc | 0:a5a2383a6e2f | 225 | oneByteWrite(ADXL345_TAP_AXES_REG, settings); |
goncaloc | 0:a5a2383a6e2f | 226 | |
goncaloc | 0:a5a2383a6e2f | 227 | } |
goncaloc | 0:a5a2383a6e2f | 228 | |
goncaloc | 0:a5a2383a6e2f | 229 | int ADXL345::getTapSource(void) { |
goncaloc | 0:a5a2383a6e2f | 230 | |
goncaloc | 0:a5a2383a6e2f | 231 | return oneByteRead(ADXL345_ACT_TAP_STATUS_REG); |
goncaloc | 0:a5a2383a6e2f | 232 | |
goncaloc | 0:a5a2383a6e2f | 233 | } |
goncaloc | 0:a5a2383a6e2f | 234 | |
goncaloc | 0:a5a2383a6e2f | 235 | void ADXL345::setPowerMode(char mode) { |
goncaloc | 0:a5a2383a6e2f | 236 | |
goncaloc | 0:a5a2383a6e2f | 237 | //Get the current register contents, so we don't clobber the rate value. |
goncaloc | 0:a5a2383a6e2f | 238 | char registerContents = oneByteRead(ADXL345_BW_RATE_REG); |
goncaloc | 0:a5a2383a6e2f | 239 | |
goncaloc | 0:a5a2383a6e2f | 240 | registerContents = (mode << 4) | registerContents; |
goncaloc | 0:a5a2383a6e2f | 241 | |
goncaloc | 0:a5a2383a6e2f | 242 | oneByteWrite(ADXL345_BW_RATE_REG, registerContents); |
goncaloc | 0:a5a2383a6e2f | 243 | |
goncaloc | 0:a5a2383a6e2f | 244 | } |
goncaloc | 0:a5a2383a6e2f | 245 | |
goncaloc | 0:a5a2383a6e2f | 246 | int ADXL345::getPowerControl(void) { |
goncaloc | 0:a5a2383a6e2f | 247 | |
goncaloc | 0:a5a2383a6e2f | 248 | return oneByteRead(ADXL345_POWER_CTL_REG); |
goncaloc | 0:a5a2383a6e2f | 249 | |
goncaloc | 0:a5a2383a6e2f | 250 | } |
goncaloc | 0:a5a2383a6e2f | 251 | |
goncaloc | 0:a5a2383a6e2f | 252 | void ADXL345::setPowerControl(int settings) { |
goncaloc | 0:a5a2383a6e2f | 253 | |
goncaloc | 0:a5a2383a6e2f | 254 | oneByteWrite(ADXL345_POWER_CTL_REG, settings); |
goncaloc | 0:a5a2383a6e2f | 255 | |
goncaloc | 0:a5a2383a6e2f | 256 | } |
goncaloc | 0:a5a2383a6e2f | 257 | |
goncaloc | 0:a5a2383a6e2f | 258 | int ADXL345::getInterruptEnableControl(void) { |
goncaloc | 0:a5a2383a6e2f | 259 | |
goncaloc | 0:a5a2383a6e2f | 260 | return oneByteRead(ADXL345_INT_ENABLE_REG); |
goncaloc | 0:a5a2383a6e2f | 261 | |
goncaloc | 0:a5a2383a6e2f | 262 | } |
goncaloc | 0:a5a2383a6e2f | 263 | |
goncaloc | 0:a5a2383a6e2f | 264 | void ADXL345::setInterruptEnableControl(int settings) { |
goncaloc | 0:a5a2383a6e2f | 265 | |
goncaloc | 0:a5a2383a6e2f | 266 | oneByteWrite(ADXL345_INT_ENABLE_REG, settings); |
goncaloc | 0:a5a2383a6e2f | 267 | |
goncaloc | 0:a5a2383a6e2f | 268 | } |
goncaloc | 0:a5a2383a6e2f | 269 | |
goncaloc | 0:a5a2383a6e2f | 270 | int ADXL345::getInterruptMappingControl(void) { |
goncaloc | 0:a5a2383a6e2f | 271 | |
goncaloc | 0:a5a2383a6e2f | 272 | return oneByteRead(ADXL345_INT_MAP_REG); |
goncaloc | 0:a5a2383a6e2f | 273 | |
goncaloc | 0:a5a2383a6e2f | 274 | } |
goncaloc | 0:a5a2383a6e2f | 275 | |
goncaloc | 0:a5a2383a6e2f | 276 | void ADXL345::setInterruptMappingControl(int settings) { |
goncaloc | 0:a5a2383a6e2f | 277 | |
goncaloc | 0:a5a2383a6e2f | 278 | oneByteWrite(ADXL345_INT_MAP_REG, settings); |
goncaloc | 0:a5a2383a6e2f | 279 | |
goncaloc | 0:a5a2383a6e2f | 280 | } |
goncaloc | 0:a5a2383a6e2f | 281 | |
goncaloc | 0:a5a2383a6e2f | 282 | int ADXL345::getInterruptSource(void){ |
goncaloc | 0:a5a2383a6e2f | 283 | |
goncaloc | 0:a5a2383a6e2f | 284 | return oneByteRead(ADXL345_INT_SOURCE_REG); |
goncaloc | 0:a5a2383a6e2f | 285 | |
goncaloc | 0:a5a2383a6e2f | 286 | } |
goncaloc | 0:a5a2383a6e2f | 287 | |
goncaloc | 0:a5a2383a6e2f | 288 | int ADXL345::getDataFormatControl(void){ |
goncaloc | 0:a5a2383a6e2f | 289 | |
goncaloc | 0:a5a2383a6e2f | 290 | return oneByteRead(ADXL345_DATA_FORMAT_REG); |
goncaloc | 0:a5a2383a6e2f | 291 | |
goncaloc | 0:a5a2383a6e2f | 292 | } |
goncaloc | 0:a5a2383a6e2f | 293 | |
goncaloc | 0:a5a2383a6e2f | 294 | void ADXL345::setDataFormatControl(int settings){ |
goncaloc | 0:a5a2383a6e2f | 295 | |
goncaloc | 0:a5a2383a6e2f | 296 | oneByteWrite(ADXL345_DATA_FORMAT_REG, settings); |
goncaloc | 0:a5a2383a6e2f | 297 | |
goncaloc | 0:a5a2383a6e2f | 298 | } |
goncaloc | 0:a5a2383a6e2f | 299 | |
goncaloc | 0:a5a2383a6e2f | 300 | void ADXL345::setDataRate(int rate) { |
goncaloc | 0:a5a2383a6e2f | 301 | |
goncaloc | 0:a5a2383a6e2f | 302 | //Get the current register contents, so we don't clobber the power bit. |
goncaloc | 0:a5a2383a6e2f | 303 | char registerContents = oneByteRead(ADXL345_BW_RATE_REG); |
goncaloc | 0:a5a2383a6e2f | 304 | |
goncaloc | 0:a5a2383a6e2f | 305 | registerContents &= 0x10; |
goncaloc | 0:a5a2383a6e2f | 306 | registerContents |= rate; |
goncaloc | 0:a5a2383a6e2f | 307 | |
goncaloc | 0:a5a2383a6e2f | 308 | oneByteWrite(ADXL345_BW_RATE_REG, registerContents); |
goncaloc | 0:a5a2383a6e2f | 309 | |
goncaloc | 0:a5a2383a6e2f | 310 | } |
goncaloc | 0:a5a2383a6e2f | 311 | |
goncaloc | 0:a5a2383a6e2f | 312 | void ADXL345::getOutput(int* readings){ |
goncaloc | 0:a5a2383a6e2f | 313 | |
goncaloc | 0:a5a2383a6e2f | 314 | char buffer[6]; |
goncaloc | 0:a5a2383a6e2f | 315 | |
goncaloc | 0:a5a2383a6e2f | 316 | multiByteRead(ADXL345_DATAX0_REG, buffer, 6); |
goncaloc | 0:a5a2383a6e2f | 317 | |
goncaloc | 0:a5a2383a6e2f | 318 | readings[0] = (int)buffer[1] << 8 | (int)buffer[0]; |
goncaloc | 0:a5a2383a6e2f | 319 | readings[1] = (int)buffer[3] << 8 | (int)buffer[2]; |
goncaloc | 0:a5a2383a6e2f | 320 | readings[2] = (int)buffer[5] << 8 | (int)buffer[4]; |
goncaloc | 0:a5a2383a6e2f | 321 | |
goncaloc | 0:a5a2383a6e2f | 322 | } |
goncaloc | 0:a5a2383a6e2f | 323 | |
goncaloc | 0:a5a2383a6e2f | 324 | int ADXL345::getFifoControl(void){ |
goncaloc | 0:a5a2383a6e2f | 325 | |
goncaloc | 0:a5a2383a6e2f | 326 | return oneByteRead(ADXL345_FIFO_CTL); |
goncaloc | 0:a5a2383a6e2f | 327 | |
goncaloc | 0:a5a2383a6e2f | 328 | } |
goncaloc | 0:a5a2383a6e2f | 329 | |
goncaloc | 0:a5a2383a6e2f | 330 | void ADXL345::setFifoControl(int settings){ |
goncaloc | 0:a5a2383a6e2f | 331 | |
goncaloc | 0:a5a2383a6e2f | 332 | oneByteWrite(ADXL345_FIFO_STATUS, settings); |
goncaloc | 0:a5a2383a6e2f | 333 | |
goncaloc | 0:a5a2383a6e2f | 334 | } |
goncaloc | 0:a5a2383a6e2f | 335 | |
goncaloc | 0:a5a2383a6e2f | 336 | int ADXL345::getFifoStatus(void){ |
goncaloc | 0:a5a2383a6e2f | 337 | |
goncaloc | 0:a5a2383a6e2f | 338 | return oneByteRead(ADXL345_FIFO_STATUS); |
goncaloc | 0:a5a2383a6e2f | 339 | |
goncaloc | 0:a5a2383a6e2f | 340 | } |
goncaloc | 0:a5a2383a6e2f | 341 | |
goncaloc | 0:a5a2383a6e2f | 342 | |
goncaloc | 0:a5a2383a6e2f | 343 | int ADXL345::oneByteRead(int address) { |
goncaloc | 0:a5a2383a6e2f | 344 | |
goncaloc | 0:a5a2383a6e2f | 345 | char rx[1]; |
goncaloc | 0:a5a2383a6e2f | 346 | rx[0] = address; |
goncaloc | 0:a5a2383a6e2f | 347 | i2c_ -> write((ADXL345_I2C_ADDRESS << 1) & 0xFE, rx, 1); |
goncaloc | 0:a5a2383a6e2f | 348 | wait_ms(1); |
goncaloc | 0:a5a2383a6e2f | 349 | i2c_ -> read((ADXL345_I2C_ADDRESS << 1) | 0x01, rx, 1); |
goncaloc | 0:a5a2383a6e2f | 350 | wait_ms(1); |
goncaloc | 0:a5a2383a6e2f | 351 | return rx[0]; |
goncaloc | 0:a5a2383a6e2f | 352 | } |
goncaloc | 0:a5a2383a6e2f | 353 | |
goncaloc | 0:a5a2383a6e2f | 354 | void ADXL345::oneByteWrite(int address, char data) { |
goncaloc | 0:a5a2383a6e2f | 355 | |
goncaloc | 0:a5a2383a6e2f | 356 | char tx[2]; |
goncaloc | 0:a5a2383a6e2f | 357 | tx[0] = address; |
goncaloc | 0:a5a2383a6e2f | 358 | tx[1] = data; |
goncaloc | 0:a5a2383a6e2f | 359 | i2c_ -> write((ADXL345_I2C_ADDRESS << 1) & 0xFE, tx, 2); |
goncaloc | 0:a5a2383a6e2f | 360 | wait_ms(1); |
goncaloc | 0:a5a2383a6e2f | 361 | |
goncaloc | 0:a5a2383a6e2f | 362 | } |
goncaloc | 0:a5a2383a6e2f | 363 | |
goncaloc | 0:a5a2383a6e2f | 364 | void ADXL345::multiByteRead(int address, char* data, int bytes) { |
goncaloc | 0:a5a2383a6e2f | 365 | |
goncaloc | 0:a5a2383a6e2f | 366 | char cmd[6]; |
goncaloc | 0:a5a2383a6e2f | 367 | cmd[0] = address; |
goncaloc | 0:a5a2383a6e2f | 368 | i2c_ -> write((ADXL345_I2C_ADDRESS << 1) & 0xFE, cmd, 1); |
goncaloc | 0:a5a2383a6e2f | 369 | wait_ms(1); |
goncaloc | 0:a5a2383a6e2f | 370 | i2c_ -> read((ADXL345_I2C_ADDRESS << 1) | 0x01, data, bytes ); |
goncaloc | 0:a5a2383a6e2f | 371 | wait_ms(1); |
goncaloc | 0:a5a2383a6e2f | 372 | |
goncaloc | 0:a5a2383a6e2f | 373 | } |
goncaloc | 0:a5a2383a6e2f | 374 | |
goncaloc | 0:a5a2383a6e2f | 375 | /*void ADXL345::multiByteWrite(int startAddress, char* buffer, int size) { |
goncaloc | 0:a5a2383a6e2f | 376 | |
goncaloc | 0:a5a2383a6e2f | 377 | int tx = (ADXL345_SPI_WRITE | ADXL345_MULTI_BYTE | (startAddress & 0x3F)); |
goncaloc | 0:a5a2383a6e2f | 378 | |
goncaloc | 0:a5a2383a6e2f | 379 | nCS_ = 0; |
goncaloc | 0:a5a2383a6e2f | 380 | //Send address to start reading from. |
goncaloc | 0:a5a2383a6e2f | 381 | spi_.write(tx); |
goncaloc | 0:a5a2383a6e2f | 382 | |
goncaloc | 0:a5a2383a6e2f | 383 | for (int i = 0; i < size; i++) { |
goncaloc | 0:a5a2383a6e2f | 384 | buffer[i] = spi_.write(0x00); |
goncaloc | 0:a5a2383a6e2f | 385 | } |
goncaloc | 0:a5a2383a6e2f | 386 | |
goncaloc | 0:a5a2383a6e2f | 387 | nCS_ = 1; |
goncaloc | 0:a5a2383a6e2f | 388 | |
goncaloc | 0:a5a2383a6e2f | 389 | }*/ |