Jose R Padron
Remove Chip Select transitions. It affects other devices in the same bus.
ADXL345_I2C.cpp@1:a948fcfd705e, 2010-11-28 (annotated)
- Committer:
- elrafapadron
- Date:
- Sun Nov 28 01:01:52 2010 +0000
- Revision:
- 1:a948fcfd705e
- Parent:
- 0:efba8208b490
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| elrafapadron | 0:efba8208b490 | 1 | /** |
| elrafapadron | 0:efba8208b490 | 2 | * @author Jose R. Padron |
| elrafapadron | 0:efba8208b490 | 3 | * |
| elrafapadron | 0:efba8208b490 | 4 | * @section LICENSE |
| elrafapadron | 0:efba8208b490 | 5 | * |
| elrafapadron | 0:efba8208b490 | 6 | * Copyright (c) 2010 ARM Limited |
| elrafapadron | 0:efba8208b490 | 7 | * |
| elrafapadron | 0:efba8208b490 | 8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| elrafapadron | 0:efba8208b490 | 9 | * of this software and associated documentation files (the "Software"), to deal |
| elrafapadron | 0:efba8208b490 | 10 | * in the Software without restriction, including without limitation the rights |
| elrafapadron | 0:efba8208b490 | 11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| elrafapadron | 0:efba8208b490 | 12 | * copies of the Software, and to permit persons to whom the Software is |
| elrafapadron | 0:efba8208b490 | 13 | * furnished to do so, subject to the following conditions: |
| elrafapadron | 0:efba8208b490 | 14 | * |
| elrafapadron | 0:efba8208b490 | 15 | * The above copyright notice and this permission notice shall be included in |
| elrafapadron | 0:efba8208b490 | 16 | * all copies or substantial portions of the Software. |
| elrafapadron | 0:efba8208b490 | 17 | * |
| elrafapadron | 0:efba8208b490 | 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| elrafapadron | 0:efba8208b490 | 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| elrafapadron | 0:efba8208b490 | 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| elrafapadron | 0:efba8208b490 | 21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| elrafapadron | 0:efba8208b490 | 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| elrafapadron | 0:efba8208b490 | 23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| elrafapadron | 0:efba8208b490 | 24 | * THE SOFTWARE. |
| elrafapadron | 0:efba8208b490 | 25 | * |
| elrafapadron | 0:efba8208b490 | 26 | * @section DESCRIPTION |
| elrafapadron | 0:efba8208b490 | 27 | * |
| elrafapadron | 0:efba8208b490 | 28 | * ADXL345, triple axis, digital interface, accelerometer. |
| elrafapadron | 0:efba8208b490 | 29 | * |
| elrafapadron | 0:efba8208b490 | 30 | * Datasheet: |
| elrafapadron | 0:efba8208b490 | 31 | * |
| elrafapadron | 0:efba8208b490 | 32 | * http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf |
| elrafapadron | 0:efba8208b490 | 33 | */ |
| elrafapadron | 0:efba8208b490 | 34 | |
| elrafapadron | 0:efba8208b490 | 35 | /** |
| elrafapadron | 0:efba8208b490 | 36 | * Includes |
| elrafapadron | 0:efba8208b490 | 37 | */ |
| elrafapadron | 0:efba8208b490 | 38 | #include "ADXL345_I2C.h" |
| elrafapadron | 0:efba8208b490 | 39 | |
| elrafapadron | 0:efba8208b490 | 40 | ADXL345_I2C::ADXL345_I2C(PinName sda, |
| elrafapadron | 0:efba8208b490 | 41 | PinName scl, |
| elrafapadron | 0:efba8208b490 | 42 | PinName cs) : i2c_(sda,scl), nCS_(cs) { |
| elrafapadron | 0:efba8208b490 | 43 | |
| elrafapadron | 0:efba8208b490 | 44 | |
| elrafapadron | 0:efba8208b490 | 45 | nCS_ = 1; |
| elrafapadron | 0:efba8208b490 | 46 | //100KHz, as specified by the datasheet. |
| elrafapadron | 0:efba8208b490 | 47 | i2c_.frequency(100000); |
| elrafapadron | 0:efba8208b490 | 48 | wait_us(500); |
| elrafapadron | 0:efba8208b490 | 49 | |
| elrafapadron | 0:efba8208b490 | 50 | } |
| elrafapadron | 0:efba8208b490 | 51 | |
| elrafapadron | 0:efba8208b490 | 52 | char ADXL345_I2C::getDevId(void) { |
| elrafapadron | 0:efba8208b490 | 53 | |
| elrafapadron | 0:efba8208b490 | 54 | return oneByteRead(ADXL345_DEVID_REG); |
| elrafapadron | 0:efba8208b490 | 55 | |
| elrafapadron | 0:efba8208b490 | 56 | } |
| elrafapadron | 0:efba8208b490 | 57 | |
| elrafapadron | 0:efba8208b490 | 58 | int ADXL345_I2C::getTapThreshold(void) { |
| elrafapadron | 0:efba8208b490 | 59 | |
| elrafapadron | 0:efba8208b490 | 60 | return oneByteRead(ADXL345_THRESH_TAP_REG); |
| elrafapadron | 0:efba8208b490 | 61 | |
| elrafapadron | 0:efba8208b490 | 62 | } |
| elrafapadron | 0:efba8208b490 | 63 | |
| elrafapadron | 0:efba8208b490 | 64 | void ADXL345_I2C::setTapThreshold(int threshold) { |
| elrafapadron | 0:efba8208b490 | 65 | |
| elrafapadron | 0:efba8208b490 | 66 | oneByteWrite(ADXL345_THRESH_TAP_REG, threshold); |
| elrafapadron | 0:efba8208b490 | 67 | |
| elrafapadron | 0:efba8208b490 | 68 | } |
| elrafapadron | 0:efba8208b490 | 69 | |
| elrafapadron | 0:efba8208b490 | 70 | int ADXL345_I2C::getOffset(int axis) { |
| elrafapadron | 0:efba8208b490 | 71 | |
| elrafapadron | 0:efba8208b490 | 72 | int address = 0; |
| elrafapadron | 0:efba8208b490 | 73 | |
| elrafapadron | 0:efba8208b490 | 74 | if (axis == ADXL345_X) { |
| elrafapadron | 0:efba8208b490 | 75 | address = ADXL345_OFSX_REG; |
| elrafapadron | 0:efba8208b490 | 76 | } else if (axis == ADXL345_Y) { |
| elrafapadron | 0:efba8208b490 | 77 | address = ADXL345_OFSY_REG; |
| elrafapadron | 0:efba8208b490 | 78 | } else if (axis == ADXL345_Z) { |
| elrafapadron | 0:efba8208b490 | 79 | address = ADXL345_OFSZ_REG; |
| elrafapadron | 0:efba8208b490 | 80 | } |
| elrafapadron | 0:efba8208b490 | 81 | |
| elrafapadron | 0:efba8208b490 | 82 | return oneByteRead(address); |
| elrafapadron | 0:efba8208b490 | 83 | |
| elrafapadron | 0:efba8208b490 | 84 | } |
| elrafapadron | 0:efba8208b490 | 85 | |
| elrafapadron | 0:efba8208b490 | 86 | void ADXL345_I2C::setOffset(int axis, char offset) { |
| elrafapadron | 0:efba8208b490 | 87 | |
| elrafapadron | 0:efba8208b490 | 88 | char address = 0; |
| elrafapadron | 0:efba8208b490 | 89 | |
| elrafapadron | 0:efba8208b490 | 90 | if (axis == ADXL345_X) { |
| elrafapadron | 0:efba8208b490 | 91 | address = ADXL345_OFSX_REG; |
| elrafapadron | 0:efba8208b490 | 92 | } else if (axis == ADXL345_Y) { |
| elrafapadron | 0:efba8208b490 | 93 | address = ADXL345_OFSY_REG; |
| elrafapadron | 0:efba8208b490 | 94 | } else if (axis == ADXL345_Z) { |
| elrafapadron | 0:efba8208b490 | 95 | address = ADXL345_OFSZ_REG; |
| elrafapadron | 0:efba8208b490 | 96 | } |
| elrafapadron | 0:efba8208b490 | 97 | |
| elrafapadron | 0:efba8208b490 | 98 | return oneByteWrite(address, offset); |
| elrafapadron | 0:efba8208b490 | 99 | |
| elrafapadron | 0:efba8208b490 | 100 | } |
| elrafapadron | 0:efba8208b490 | 101 | |
| elrafapadron | 0:efba8208b490 | 102 | int ADXL345_I2C::getTapDuration(void) { |
| elrafapadron | 0:efba8208b490 | 103 | |
| elrafapadron | 0:efba8208b490 | 104 | return oneByteRead(ADXL345_DUR_REG)*625; |
| elrafapadron | 0:efba8208b490 | 105 | |
| elrafapadron | 0:efba8208b490 | 106 | } |
| elrafapadron | 0:efba8208b490 | 107 | |
| elrafapadron | 0:efba8208b490 | 108 | void ADXL345_I2C::setTapDuration(int duration_us) { |
| elrafapadron | 0:efba8208b490 | 109 | |
| elrafapadron | 0:efba8208b490 | 110 | int tapDuration = duration_us / 625; |
| elrafapadron | 0:efba8208b490 | 111 | |
| elrafapadron | 0:efba8208b490 | 112 | oneByteWrite(ADXL345_DUR_REG, tapDuration); |
| elrafapadron | 0:efba8208b490 | 113 | |
| elrafapadron | 0:efba8208b490 | 114 | } |
| elrafapadron | 0:efba8208b490 | 115 | |
| elrafapadron | 0:efba8208b490 | 116 | float ADXL345_I2C::getTapLatency(void) { |
| elrafapadron | 0:efba8208b490 | 117 | |
| elrafapadron | 0:efba8208b490 | 118 | return oneByteRead(ADXL345_LATENT_REG)*1.25; |
| elrafapadron | 0:efba8208b490 | 119 | |
| elrafapadron | 0:efba8208b490 | 120 | } |
| elrafapadron | 0:efba8208b490 | 121 | |
| elrafapadron | 0:efba8208b490 | 122 | void ADXL345_I2C::setTapLatency(int latency_ms) { |
| elrafapadron | 0:efba8208b490 | 123 | |
| elrafapadron | 0:efba8208b490 | 124 | int tapLatency = latency_ms / 1.25; |
| elrafapadron | 0:efba8208b490 | 125 | |
| elrafapadron | 0:efba8208b490 | 126 | oneByteWrite(ADXL345_LATENT_REG, tapLatency); |
| elrafapadron | 0:efba8208b490 | 127 | |
| elrafapadron | 0:efba8208b490 | 128 | } |
| elrafapadron | 0:efba8208b490 | 129 | |
| elrafapadron | 0:efba8208b490 | 130 | float ADXL345_I2C::getWindowTime(void) { |
| elrafapadron | 0:efba8208b490 | 131 | |
| elrafapadron | 0:efba8208b490 | 132 | return oneByteRead(ADXL345_WINDOW_REG)*1.25; |
| elrafapadron | 0:efba8208b490 | 133 | |
| elrafapadron | 0:efba8208b490 | 134 | } |
| elrafapadron | 0:efba8208b490 | 135 | |
| elrafapadron | 0:efba8208b490 | 136 | void ADXL345_I2C::setWindowTime(int window_ms) { |
| elrafapadron | 0:efba8208b490 | 137 | |
| elrafapadron | 0:efba8208b490 | 138 | int windowTime = window_ms / 1.25; |
| elrafapadron | 0:efba8208b490 | 139 | |
| elrafapadron | 0:efba8208b490 | 140 | oneByteWrite(ADXL345_WINDOW_REG, windowTime); |
| elrafapadron | 0:efba8208b490 | 141 | |
| elrafapadron | 0:efba8208b490 | 142 | } |
| elrafapadron | 0:efba8208b490 | 143 | |
| elrafapadron | 0:efba8208b490 | 144 | int ADXL345_I2C::getActivityThreshold(void) { |
| elrafapadron | 0:efba8208b490 | 145 | |
| elrafapadron | 0:efba8208b490 | 146 | return oneByteRead(ADXL345_THRESH_ACT_REG); |
| elrafapadron | 0:efba8208b490 | 147 | |
| elrafapadron | 0:efba8208b490 | 148 | } |
| elrafapadron | 0:efba8208b490 | 149 | |
| elrafapadron | 0:efba8208b490 | 150 | void ADXL345_I2C::setActivityThreshold(int threshold) { |
| elrafapadron | 0:efba8208b490 | 151 | |
| elrafapadron | 0:efba8208b490 | 152 | oneByteWrite(ADXL345_THRESH_ACT_REG, threshold); |
| elrafapadron | 0:efba8208b490 | 153 | |
| elrafapadron | 0:efba8208b490 | 154 | } |
| elrafapadron | 0:efba8208b490 | 155 | |
| elrafapadron | 0:efba8208b490 | 156 | int ADXL345_I2C::getInactivityThreshold(void) { |
| elrafapadron | 0:efba8208b490 | 157 | |
| elrafapadron | 0:efba8208b490 | 158 | return oneByteRead(ADXL345_THRESH_INACT_REG); |
| elrafapadron | 0:efba8208b490 | 159 | |
| elrafapadron | 0:efba8208b490 | 160 | } |
| elrafapadron | 0:efba8208b490 | 161 | |
| elrafapadron | 0:efba8208b490 | 162 | void ADXL345_I2C::setInactivityThreshold(int threshold) { |
| elrafapadron | 0:efba8208b490 | 163 | |
| elrafapadron | 0:efba8208b490 | 164 | return oneByteWrite(ADXL345_THRESH_INACT_REG, threshold); |
| elrafapadron | 0:efba8208b490 | 165 | |
| elrafapadron | 0:efba8208b490 | 166 | } |
| elrafapadron | 0:efba8208b490 | 167 | |
| elrafapadron | 0:efba8208b490 | 168 | int ADXL345_I2C::getTimeInactivity(void) { |
| elrafapadron | 0:efba8208b490 | 169 | |
| elrafapadron | 0:efba8208b490 | 170 | return oneByteRead(ADXL345_TIME_INACT_REG); |
| elrafapadron | 0:efba8208b490 | 171 | |
| elrafapadron | 0:efba8208b490 | 172 | } |
| elrafapadron | 0:efba8208b490 | 173 | |
| elrafapadron | 0:efba8208b490 | 174 | void ADXL345_I2C::setTimeInactivity(int timeInactivity) { |
| elrafapadron | 0:efba8208b490 | 175 | |
| elrafapadron | 0:efba8208b490 | 176 | oneByteWrite(ADXL345_TIME_INACT_REG, timeInactivity); |
| elrafapadron | 0:efba8208b490 | 177 | |
| elrafapadron | 0:efba8208b490 | 178 | } |
| elrafapadron | 0:efba8208b490 | 179 | |
| elrafapadron | 0:efba8208b490 | 180 | int ADXL345_I2C::getActivityInactivityControl(void) { |
| elrafapadron | 0:efba8208b490 | 181 | |
| elrafapadron | 0:efba8208b490 | 182 | return oneByteRead(ADXL345_ACT_INACT_CTL_REG); |
| elrafapadron | 0:efba8208b490 | 183 | |
| elrafapadron | 0:efba8208b490 | 184 | } |
| elrafapadron | 0:efba8208b490 | 185 | |
| elrafapadron | 0:efba8208b490 | 186 | void ADXL345_I2C::setActivityInactivityControl(int settings) { |
| elrafapadron | 0:efba8208b490 | 187 | |
| elrafapadron | 0:efba8208b490 | 188 | oneByteWrite(ADXL345_ACT_INACT_CTL_REG, settings); |
| elrafapadron | 0:efba8208b490 | 189 | |
| elrafapadron | 0:efba8208b490 | 190 | } |
| elrafapadron | 0:efba8208b490 | 191 | |
| elrafapadron | 0:efba8208b490 | 192 | int ADXL345_I2C::getFreefallThreshold(void) { |
| elrafapadron | 0:efba8208b490 | 193 | |
| elrafapadron | 0:efba8208b490 | 194 | return oneByteRead(ADXL345_THRESH_FF_REG); |
| elrafapadron | 0:efba8208b490 | 195 | |
| elrafapadron | 0:efba8208b490 | 196 | } |
| elrafapadron | 0:efba8208b490 | 197 | |
| elrafapadron | 0:efba8208b490 | 198 | void ADXL345_I2C::setFreefallThreshold(int threshold) { |
| elrafapadron | 0:efba8208b490 | 199 | |
| elrafapadron | 0:efba8208b490 | 200 | oneByteWrite(ADXL345_THRESH_FF_REG, threshold); |
| elrafapadron | 0:efba8208b490 | 201 | |
| elrafapadron | 0:efba8208b490 | 202 | } |
| elrafapadron | 0:efba8208b490 | 203 | |
| elrafapadron | 0:efba8208b490 | 204 | int ADXL345_I2C::getFreefallTime(void) { |
| elrafapadron | 0:efba8208b490 | 205 | |
| elrafapadron | 0:efba8208b490 | 206 | return oneByteRead(ADXL345_TIME_FF_REG)*5; |
| elrafapadron | 0:efba8208b490 | 207 | |
| elrafapadron | 0:efba8208b490 | 208 | } |
| elrafapadron | 0:efba8208b490 | 209 | |
| elrafapadron | 0:efba8208b490 | 210 | void ADXL345_I2C::setFreefallTime(int freefallTime_ms) { |
| elrafapadron | 0:efba8208b490 | 211 | |
| elrafapadron | 0:efba8208b490 | 212 | int freefallTime = freefallTime_ms / 5; |
| elrafapadron | 0:efba8208b490 | 213 | |
| elrafapadron | 0:efba8208b490 | 214 | oneByteWrite(ADXL345_TIME_FF_REG, freefallTime); |
| elrafapadron | 0:efba8208b490 | 215 | |
| elrafapadron | 0:efba8208b490 | 216 | } |
| elrafapadron | 0:efba8208b490 | 217 | |
| elrafapadron | 0:efba8208b490 | 218 | int ADXL345_I2C::getTapAxisControl(void) { |
| elrafapadron | 0:efba8208b490 | 219 | |
| elrafapadron | 0:efba8208b490 | 220 | return oneByteRead(ADXL345_TAP_AXES_REG); |
| elrafapadron | 0:efba8208b490 | 221 | |
| elrafapadron | 0:efba8208b490 | 222 | } |
| elrafapadron | 0:efba8208b490 | 223 | |
| elrafapadron | 0:efba8208b490 | 224 | void ADXL345_I2C::setTapAxisControl(int settings) { |
| elrafapadron | 0:efba8208b490 | 225 | |
| elrafapadron | 0:efba8208b490 | 226 | oneByteWrite(ADXL345_TAP_AXES_REG, settings); |
| elrafapadron | 0:efba8208b490 | 227 | |
| elrafapadron | 0:efba8208b490 | 228 | } |
| elrafapadron | 0:efba8208b490 | 229 | |
| elrafapadron | 0:efba8208b490 | 230 | int ADXL345_I2C::getTapSource(void) { |
| elrafapadron | 0:efba8208b490 | 231 | |
| elrafapadron | 0:efba8208b490 | 232 | return oneByteRead(ADXL345_ACT_TAP_STATUS_REG); |
| elrafapadron | 0:efba8208b490 | 233 | |
| elrafapadron | 0:efba8208b490 | 234 | } |
| elrafapadron | 0:efba8208b490 | 235 | |
| elrafapadron | 0:efba8208b490 | 236 | void ADXL345_I2C::setPowerMode(char mode) { |
| elrafapadron | 0:efba8208b490 | 237 | |
| elrafapadron | 0:efba8208b490 | 238 | //Get the current register contents, so we don't clobber the rate value. |
| elrafapadron | 0:efba8208b490 | 239 | char registerContents = oneByteRead(ADXL345_BW_RATE_REG); |
| elrafapadron | 0:efba8208b490 | 240 | |
| elrafapadron | 0:efba8208b490 | 241 | registerContents = (mode << 4) | registerContents; |
| elrafapadron | 0:efba8208b490 | 242 | |
| elrafapadron | 0:efba8208b490 | 243 | oneByteWrite(ADXL345_BW_RATE_REG, registerContents); |
| elrafapadron | 0:efba8208b490 | 244 | |
| elrafapadron | 0:efba8208b490 | 245 | } |
| elrafapadron | 0:efba8208b490 | 246 | |
| elrafapadron | 0:efba8208b490 | 247 | int ADXL345_I2C::getPowerControl(void) { |
| elrafapadron | 0:efba8208b490 | 248 | |
| elrafapadron | 0:efba8208b490 | 249 | return oneByteRead(ADXL345_POWER_CTL_REG); |
| elrafapadron | 0:efba8208b490 | 250 | |
| elrafapadron | 0:efba8208b490 | 251 | } |
| elrafapadron | 0:efba8208b490 | 252 | |
| elrafapadron | 0:efba8208b490 | 253 | void ADXL345_I2C::setPowerControl(int settings) { |
| elrafapadron | 0:efba8208b490 | 254 | |
| elrafapadron | 0:efba8208b490 | 255 | oneByteWrite(ADXL345_POWER_CTL_REG, settings); |
| elrafapadron | 0:efba8208b490 | 256 | |
| elrafapadron | 0:efba8208b490 | 257 | } |
| elrafapadron | 0:efba8208b490 | 258 | |
| elrafapadron | 0:efba8208b490 | 259 | int ADXL345_I2C::getInterruptEnableControl(void) { |
| elrafapadron | 0:efba8208b490 | 260 | |
| elrafapadron | 0:efba8208b490 | 261 | return oneByteRead(ADXL345_INT_ENABLE_REG); |
| elrafapadron | 0:efba8208b490 | 262 | |
| elrafapadron | 0:efba8208b490 | 263 | } |
| elrafapadron | 0:efba8208b490 | 264 | |
| elrafapadron | 0:efba8208b490 | 265 | void ADXL345_I2C::setInterruptEnableControl(int settings) { |
| elrafapadron | 0:efba8208b490 | 266 | |
| elrafapadron | 0:efba8208b490 | 267 | oneByteWrite(ADXL345_INT_ENABLE_REG, settings); |
| elrafapadron | 0:efba8208b490 | 268 | |
| elrafapadron | 0:efba8208b490 | 269 | } |
| elrafapadron | 0:efba8208b490 | 270 | |
| elrafapadron | 0:efba8208b490 | 271 | int ADXL345_I2C::getInterruptMappingControl(void) { |
| elrafapadron | 0:efba8208b490 | 272 | |
| elrafapadron | 0:efba8208b490 | 273 | return oneByteRead(ADXL345_INT_MAP_REG); |
| elrafapadron | 0:efba8208b490 | 274 | |
| elrafapadron | 0:efba8208b490 | 275 | } |
| elrafapadron | 0:efba8208b490 | 276 | |
| elrafapadron | 0:efba8208b490 | 277 | void ADXL345_I2C::setInterruptMappingControl(int settings) { |
| elrafapadron | 0:efba8208b490 | 278 | |
| elrafapadron | 0:efba8208b490 | 279 | oneByteWrite(ADXL345_INT_MAP_REG, settings); |
| elrafapadron | 0:efba8208b490 | 280 | |
| elrafapadron | 0:efba8208b490 | 281 | } |
| elrafapadron | 0:efba8208b490 | 282 | |
| elrafapadron | 0:efba8208b490 | 283 | int ADXL345_I2C::getInterruptSource(void){ |
| elrafapadron | 0:efba8208b490 | 284 | |
| elrafapadron | 0:efba8208b490 | 285 | return oneByteRead(ADXL345_INT_SOURCE_REG); |
| elrafapadron | 0:efba8208b490 | 286 | |
| elrafapadron | 0:efba8208b490 | 287 | } |
| elrafapadron | 0:efba8208b490 | 288 | |
| elrafapadron | 0:efba8208b490 | 289 | int ADXL345_I2C::getDataFormatControl(void){ |
| elrafapadron | 0:efba8208b490 | 290 | |
| elrafapadron | 0:efba8208b490 | 291 | return oneByteRead(ADXL345_DATA_FORMAT_REG); |
| elrafapadron | 0:efba8208b490 | 292 | |
| elrafapadron | 0:efba8208b490 | 293 | } |
| elrafapadron | 0:efba8208b490 | 294 | |
| elrafapadron | 0:efba8208b490 | 295 | void ADXL345_I2C::setDataFormatControl(int settings){ |
| elrafapadron | 0:efba8208b490 | 296 | |
| elrafapadron | 0:efba8208b490 | 297 | oneByteWrite(ADXL345_DATA_FORMAT_REG, settings); |
| elrafapadron | 0:efba8208b490 | 298 | |
| elrafapadron | 0:efba8208b490 | 299 | } |
| elrafapadron | 0:efba8208b490 | 300 | |
| elrafapadron | 0:efba8208b490 | 301 | void ADXL345_I2C::setDataRate(int rate) { |
| elrafapadron | 0:efba8208b490 | 302 | |
| elrafapadron | 0:efba8208b490 | 303 | //Get the current register contents, so we don't clobber the power bit. |
| elrafapadron | 0:efba8208b490 | 304 | char registerContents = oneByteRead(ADXL345_BW_RATE_REG); |
| elrafapadron | 0:efba8208b490 | 305 | |
| elrafapadron | 0:efba8208b490 | 306 | registerContents &= 0x10; |
| elrafapadron | 0:efba8208b490 | 307 | registerContents |= rate; |
| elrafapadron | 0:efba8208b490 | 308 | |
| elrafapadron | 0:efba8208b490 | 309 | oneByteWrite(ADXL345_BW_RATE_REG, registerContents); |
| elrafapadron | 0:efba8208b490 | 310 | |
| elrafapadron | 0:efba8208b490 | 311 | } |
| elrafapadron | 0:efba8208b490 | 312 | |
| elrafapadron | 0:efba8208b490 | 313 | int ADXL345_I2C::getAx(){ |
| elrafapadron | 0:efba8208b490 | 314 | |
| elrafapadron | 0:efba8208b490 | 315 | char buffer[2]; |
| elrafapadron | 0:efba8208b490 | 316 | |
| elrafapadron | 0:efba8208b490 | 317 | TwoByteRead(ADXL345_DATAX0_REG, buffer); |
| elrafapadron | 0:efba8208b490 | 318 | |
| elrafapadron | 0:efba8208b490 | 319 | return ((int)buffer[1] << 8 | (int)buffer[0]); |
| elrafapadron | 0:efba8208b490 | 320 | } |
| elrafapadron | 0:efba8208b490 | 321 | |
| elrafapadron | 0:efba8208b490 | 322 | |
| elrafapadron | 0:efba8208b490 | 323 | int ADXL345_I2C::getAy(){ |
| elrafapadron | 0:efba8208b490 | 324 | |
| elrafapadron | 0:efba8208b490 | 325 | char buffer[2]; |
| elrafapadron | 0:efba8208b490 | 326 | |
| elrafapadron | 0:efba8208b490 | 327 | TwoByteRead(ADXL345_DATAY0_REG, buffer); |
| elrafapadron | 0:efba8208b490 | 328 | |
| elrafapadron | 0:efba8208b490 | 329 | return ((int)buffer[1] << 8 | (int)buffer[0]); |
| elrafapadron | 0:efba8208b490 | 330 | } |
| elrafapadron | 0:efba8208b490 | 331 | |
| elrafapadron | 0:efba8208b490 | 332 | int ADXL345_I2C::getAz(){ |
| elrafapadron | 0:efba8208b490 | 333 | |
| elrafapadron | 0:efba8208b490 | 334 | char buffer[2]; |
| elrafapadron | 0:efba8208b490 | 335 | |
| elrafapadron | 0:efba8208b490 | 336 | TwoByteRead(ADXL345_DATAZ0_REG, buffer); |
| elrafapadron | 0:efba8208b490 | 337 | |
| elrafapadron | 0:efba8208b490 | 338 | return ((int)buffer[1] << 8 | (int)buffer[0]); |
| elrafapadron | 0:efba8208b490 | 339 | } |
| elrafapadron | 0:efba8208b490 | 340 | |
| elrafapadron | 0:efba8208b490 | 341 | |
| elrafapadron | 0:efba8208b490 | 342 | |
| elrafapadron | 0:efba8208b490 | 343 | void ADXL345_I2C::getOutput(int* readings){ |
| elrafapadron | 0:efba8208b490 | 344 | |
| elrafapadron | 0:efba8208b490 | 345 | char buffer[2]; |
| elrafapadron | 0:efba8208b490 | 346 | |
| elrafapadron | 0:efba8208b490 | 347 | TwoByteRead(ADXL345_DATAX0_REG, buffer); |
| elrafapadron | 0:efba8208b490 | 348 | readings[0] = (int)buffer[1] << 8 | (int)buffer[0]; |
| elrafapadron | 0:efba8208b490 | 349 | TwoByteRead(ADXL345_DATAY0_REG, buffer); |
| elrafapadron | 0:efba8208b490 | 350 | readings[1] = (int)buffer[1] << 8 | (int)buffer[0]; |
| elrafapadron | 0:efba8208b490 | 351 | TwoByteRead(ADXL345_DATAZ0_REG, buffer); |
| elrafapadron | 0:efba8208b490 | 352 | readings[2] = (int)buffer[1] << 8 | (int)buffer[0]; |
| elrafapadron | 0:efba8208b490 | 353 | |
| elrafapadron | 0:efba8208b490 | 354 | } |
| elrafapadron | 0:efba8208b490 | 355 | |
| elrafapadron | 0:efba8208b490 | 356 | int ADXL345_I2C::getFifoControl(void){ |
| elrafapadron | 0:efba8208b490 | 357 | |
| elrafapadron | 0:efba8208b490 | 358 | return oneByteRead(ADXL345_FIFO_CTL); |
| elrafapadron | 0:efba8208b490 | 359 | |
| elrafapadron | 0:efba8208b490 | 360 | } |
| elrafapadron | 0:efba8208b490 | 361 | |
| elrafapadron | 0:efba8208b490 | 362 | void ADXL345_I2C::setFifoControl(int settings){ |
| elrafapadron | 0:efba8208b490 | 363 | |
| elrafapadron | 0:efba8208b490 | 364 | oneByteWrite(ADXL345_FIFO_STATUS, settings); |
| elrafapadron | 0:efba8208b490 | 365 | |
| elrafapadron | 0:efba8208b490 | 366 | } |
| elrafapadron | 0:efba8208b490 | 367 | |
| elrafapadron | 0:efba8208b490 | 368 | int ADXL345_I2C::getFifoStatus(void){ |
| elrafapadron | 0:efba8208b490 | 369 | |
| elrafapadron | 0:efba8208b490 | 370 | return oneByteRead(ADXL345_FIFO_STATUS); |
| elrafapadron | 0:efba8208b490 | 371 | |
| elrafapadron | 0:efba8208b490 | 372 | } |
| elrafapadron | 0:efba8208b490 | 373 | |
| elrafapadron | 0:efba8208b490 | 374 | char ADXL345_I2C::oneByteRead(char address) { |
| elrafapadron | 0:efba8208b490 | 375 | |
| elrafapadron | 0:efba8208b490 | 376 | |
| elrafapadron | 0:efba8208b490 | 377 | char rx[1]; |
| elrafapadron | 0:efba8208b490 | 378 | char tx[1]; |
| elrafapadron | 0:efba8208b490 | 379 | |
| elrafapadron | 1:a948fcfd705e | 380 | // nCS_ = 1; |
| elrafapadron | 0:efba8208b490 | 381 | tx[0]=address; |
| elrafapadron | 0:efba8208b490 | 382 | |
| elrafapadron | 0:efba8208b490 | 383 | |
| elrafapadron | 0:efba8208b490 | 384 | i2c_.write(ADXL345_I2C_WRITE, tx,1); |
| elrafapadron | 0:efba8208b490 | 385 | i2c_.read(ADXL345_I2C_READ,rx,1); |
| elrafapadron | 0:efba8208b490 | 386 | |
| elrafapadron | 1:a948fcfd705e | 387 | //nCS_ = 0; |
| elrafapadron | 0:efba8208b490 | 388 | return rx[0]; |
| elrafapadron | 0:efba8208b490 | 389 | |
| elrafapadron | 0:efba8208b490 | 390 | } |
| elrafapadron | 0:efba8208b490 | 391 | |
| elrafapadron | 0:efba8208b490 | 392 | void ADXL345_I2C::oneByteWrite(char address, char data) { |
| elrafapadron | 1:a948fcfd705e | 393 | // nCS_ = 1; |
| elrafapadron | 0:efba8208b490 | 394 | char tx[2]; |
| elrafapadron | 0:efba8208b490 | 395 | |
| elrafapadron | 0:efba8208b490 | 396 | tx[0]=address; |
| elrafapadron | 0:efba8208b490 | 397 | tx[1]=data; |
| elrafapadron | 0:efba8208b490 | 398 | |
| elrafapadron | 0:efba8208b490 | 399 | i2c_.write(ADXL345_I2C_WRITE,tx,2); |
| elrafapadron | 0:efba8208b490 | 400 | |
| elrafapadron | 1:a948fcfd705e | 401 | //nCS_ = 0; |
| elrafapadron | 0:efba8208b490 | 402 | } |
| elrafapadron | 0:efba8208b490 | 403 | |
| elrafapadron | 0:efba8208b490 | 404 | void ADXL345_I2C::TwoByteRead(char startAddress, char* buffer) { |
| elrafapadron | 0:efba8208b490 | 405 | |
| elrafapadron | 0:efba8208b490 | 406 | |
| elrafapadron | 1:a948fcfd705e | 407 | // nCS_ = 1; |
| elrafapadron | 0:efba8208b490 | 408 | //Send address to start reading from. |
| elrafapadron | 0:efba8208b490 | 409 | char tx[1]; |
| elrafapadron | 0:efba8208b490 | 410 | tx[0]=startAddress; |
| elrafapadron | 0:efba8208b490 | 411 | i2c_.write(ADXL345_I2C_WRITE,tx,1); |
| elrafapadron | 0:efba8208b490 | 412 | i2c_.read(ADXL345_I2C_READ,buffer,2); |
| elrafapadron | 0:efba8208b490 | 413 | |
| elrafapadron | 1:a948fcfd705e | 414 | //nCS_ = 0; |
| elrafapadron | 0:efba8208b490 | 415 | } |
| elrafapadron | 0:efba8208b490 | 416 | |
| elrafapadron | 0:efba8208b490 | 417 | void ADXL345_I2C::TwoByteWrite(char startAddress, char* buffer) { |
| elrafapadron | 0:efba8208b490 | 418 | |
| elrafapadron | 1:a948fcfd705e | 419 | //nCS_ = 1; |
| elrafapadron | 0:efba8208b490 | 420 | //Send address to start reading from. |
| elrafapadron | 0:efba8208b490 | 421 | char tx[1]; |
| elrafapadron | 0:efba8208b490 | 422 | tx[0]=startAddress; |
| elrafapadron | 0:efba8208b490 | 423 | i2c_.write(ADXL345_I2C_WRITE,tx,1); |
| elrafapadron | 0:efba8208b490 | 424 | i2c_.write(ADXL345_I2C_WRITE,buffer,2); |
| elrafapadron | 0:efba8208b490 | 425 | |
| elrafapadron | 0:efba8208b490 | 426 | |
| elrafapadron | 1:a948fcfd705e | 427 | //nCS_ = 0; |
| elrafapadron | 0:efba8208b490 | 428 | |
| elrafapadron | 0:efba8208b490 | 429 | } |