Multi-Hackers / MPL3115A2

Class module for MPL3115A2 I2C Barometric Sensor

Dependents:   mDotEVBM2X MTDOT-EVBDemo-DRH MTDOT-BOX-EVB-Factory-Firmware-LIB-108 MTDOT-UDKDemo_Senet ... more

MPL3115A2.cpp@3:c41ffe71300f, 2016-10-17 (annotated)

Committer:
Leon Lindenfelser
Date:
Mon Oct 17 08:41:40 2016 -0500
Revision:
3:c41ffe71300f
Parent:
2:cc50526dae10
Child:
4:b612babc2c3b
Remove disable and enable of irqs around I2C accesses. Mbed5 takes care of peripheral access protection.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
falingtrea 0:3f52908a334d 1 /**
falingtrea 0:3f52908a334d 2 * @file MPL3115A2.cpp
falingtrea 0:3f52908a334d 3 * @brief Device driver - MPL3115A2 barometric pressure IC w/RTOS support
falingtrea 0:3f52908a334d 4 * @author Tim Barr
falingtrea 0:3f52908a334d 5 * @version 1.0
falingtrea 0:3f52908a334d 6 * @see http://cache.freescale.com/files/sensors/doc/data_sheet/MPL3115A2.pdf
falingtrea 0:3f52908a334d 7 *
falingtrea 0:3f52908a334d 8 * Copyright (c) 2015
falingtrea 0:3f52908a334d 9 *
falingtrea 0:3f52908a334d 10 * Licensed under the Apache License, Version 2.0 (the "License");
falingtrea 0:3f52908a334d 11 * you may not use this file except in compliance with the License.
falingtrea 0:3f52908a334d 12 * You may obtain a copy of the License at
falingtrea 0:3f52908a334d 13 *
falingtrea 0:3f52908a334d 14 * http://www.apache.org/licenses/LICENSE-2.0
falingtrea 0:3f52908a334d 15 *
falingtrea 0:3f52908a334d 16 * Unless required by applicable law or agreed to in writing, software
falingtrea 0:3f52908a334d 17 * distributed under the License is distributed on an "AS IS" BASIS,
falingtrea 0:3f52908a334d 18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
falingtrea 0:3f52908a334d 19 * See the License for the specific language governing permissions and
falingtrea 0:3f52908a334d 20 * limitations under the License.
falingtrea 0:3f52908a334d 21 */
mfiore 1:072fd24cc12b 22
falingtrea 0:3f52908a334d 23 #include "MPL3115A2.h"
falingtrea 0:3f52908a334d 24 #include "mbed_debug.h"
falingtrea 0:3f52908a334d 25 #include "rtos.h"
mfiore 1:072fd24cc12b 26
falingtrea 0:3f52908a334d 27 MPL3115A2::MPL3115A2( I2C &i2c, InterruptIn* int1, InterruptIn* int2)
falingtrea 0:3f52908a334d 28 {
falingtrea 0:3f52908a334d 29 _i2c = &i2c;
falingtrea 0:3f52908a334d 30 _int1 = int1;
falingtrea 0:3f52908a334d 31 _int2 = int2;
mfiore 1:072fd24cc12b 32
mfiore 1:072fd24cc12b 33 MPL3115A2::init();
falingtrea 0:3f52908a334d 34
falingtrea 0:3f52908a334d 35 return;
falingtrea 0:3f52908a334d 36 }
falingtrea 0:3f52908a334d 37
falingtrea 0:3f52908a334d 38 bool MPL3115A2::testWhoAmI(void)
falingtrea 0:3f52908a334d 39 {
mfiore 1:072fd24cc12b 40 char reg_val[1];
falingtrea 0:3f52908a334d 41
mfiore 1:072fd24cc12b 42 reg_val[0] = 0x00;
mfiore 1:072fd24cc12b 43 MPL3115A2::readRegister(WHO_AM_I,reg_val);
falingtrea 0:3f52908a334d 44
mfiore 1:072fd24cc12b 45 return (reg_val[0] == I_AM_MPL3115A2);
falingtrea 0:3f52908a334d 46
falingtrea 0:3f52908a334d 47 }
falingtrea 0:3f52908a334d 48
falingtrea 0:3f52908a334d 49 uint8_t MPL3115A2::init(void)
falingtrea 0:3f52908a334d 50 {
falingtrea 0:3f52908a334d 51 uint8_t result = 0;
falingtrea 0:3f52908a334d 52 uint8_t i = 0;
falingtrea 0:3f52908a334d 53 char reg_val[1];
mfiore 1:072fd24cc12b 54
falingtrea 0:3f52908a334d 55 _i2c->frequency(400000);
mfiore 1:072fd24cc12b 56
falingtrea 0:3f52908a334d 57 // Reset all registers to POR values
falingtrea 0:3f52908a334d 58 reg_val[0] = 0x04;
falingtrea 0:3f52908a334d 59 result = MPL3115A2::writeRegister(CTRL_REG1, reg_val);
mfiore 1:072fd24cc12b 60 if (result == 0) {
mfiore 1:072fd24cc12b 61 do {
mfiore 1:072fd24cc12b 62 // wait for the reset bit to clear. readRegister may error out so we re-try 10 times
mfiore 1:072fd24cc12b 63 osDelay(200);
mfiore 1:072fd24cc12b 64 reg_val[0] = 0x40;
mfiore 1:072fd24cc12b 65 result = MPL3115A2::readRegister(CTRL_REG1,reg_val);
mfiore 1:072fd24cc12b 66 reg_val[0] = reg_val[0] & 0x04;
mfiore 1:072fd24cc12b 67 i++;
mfiore 1:072fd24cc12b 68 } while(((reg_val[0] != 0) || (result != 0)) && (i<=10));
falingtrea 0:3f52908a334d 69 }
falingtrea 0:3f52908a334d 70
mfiore 1:072fd24cc12b 71 if ((result == 0) && (MPL3115A2::testWhoAmI() == true)) {
falingtrea 0:3f52908a334d 72
mfiore 1:072fd24cc12b 73 if ((_int1 == NULL) && (_int2 == NULL)) {
mfiore 1:072fd24cc12b 74 _polling_mode = true;
mfiore 1:072fd24cc12b 75 reg_val[0] = 0x07;
mfiore 1:072fd24cc12b 76 result |= MPL3115A2::writeRegister(PT_DATA_CFG,reg_val);
mfiore 1:072fd24cc12b 77 } else _polling_mode = false;
mfiore 1:072fd24cc12b 78 } else {
mfiore 1:072fd24cc12b 79 debug ("Device not supported by this library!\n\r");
mfiore 1:072fd24cc12b 80 result = 1;
falingtrea 0:3f52908a334d 81 }
falingtrea 0:3f52908a334d 82
mfiore 1:072fd24cc12b 83 if(result != 0) {
falingtrea 0:3f52908a334d 84 debug("MPL3115A2:init failed\n\r");
falingtrea 0:3f52908a334d 85 }
mfiore 1:072fd24cc12b 86
falingtrea 0:3f52908a334d 87 return result;
falingtrea 0:3f52908a334d 88 }
falingtrea 0:3f52908a334d 89
falingtrea 0:3f52908a334d 90 uint8_t MPL3115A2::setParameters(OUTPUT_MODE out_mode, DATA_MODE data_mode, OVERSAMPLE_RATIO os_ratio,
mfiore 1:072fd24cc12b 91 ACQUISITION_TIMER measure_time)
falingtrea 0:3f52908a334d 92 {
falingtrea 0:3f52908a334d 93 uint8_t result = 0;
falingtrea 0:3f52908a334d 94 char datain[4];
falingtrea 0:3f52908a334d 95 char dataout[4];
falingtrea 0:3f52908a334d 96
falingtrea 0:3f52908a334d 97 result |= MPL3115A2::readRegister(SYSMOD, datain); // Make sure MPL3115A2 is in Stand-By mode
mfiore 1:072fd24cc12b 98 if ((datain[0] & 0x01) != 0 ) {
mfiore 1:072fd24cc12b 99 debug ("MPL3115A2 not in STAND BY mode\n\f");
falingtrea 0:3f52908a334d 100 debug("MPL3115A2:setParameters failed\n\r");
falingtrea 0:3f52908a334d 101 result = 1;
falingtrea 0:3f52908a334d 102 return result;
falingtrea 0:3f52908a334d 103 }
falingtrea 0:3f52908a334d 104
falingtrea 0:3f52908a334d 105 result |= MPL3115A2::readRegister(CTRL_REG1, datain, 2);
falingtrea 0:3f52908a334d 106 dataout[0] = (datain[0] & 0x07) | os_ratio | out_mode | data_mode;
falingtrea 0:3f52908a334d 107 dataout[1] = (datain[1] & 0xF0) | measure_time;
falingtrea 0:3f52908a334d 108 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout, 2);
falingtrea 0:3f52908a334d 109
mfiore 1:072fd24cc12b 110 if(result != 0) {
falingtrea 0:3f52908a334d 111 debug("MPL3115A2:setParameters failed\n\r");
falingtrea 0:3f52908a334d 112 }
mfiore 1:072fd24cc12b 113
mfiore 1:072fd24cc12b 114 return result;
falingtrea 0:3f52908a334d 115 }
falingtrea 0:3f52908a334d 116
falingtrea 0:3f52908a334d 117 uint8_t MPL3115A2::enableFIFO(void)
falingtrea 0:3f52908a334d 118 {
falingtrea 0:3f52908a334d 119 uint8_t result = 0;
falingtrea 0:3f52908a334d 120 return result;
mfiore 1:072fd24cc12b 121 }
falingtrea 0:3f52908a334d 122
falingtrea 0:3f52908a334d 123 uint8_t MPL3115A2::activeMode(void)
falingtrea 0:3f52908a334d 124 {
falingtrea 0:3f52908a334d 125 uint8_t result = 0;
falingtrea 0:3f52908a334d 126 char datain[1];
falingtrea 0:3f52908a334d 127 char dataout[1];
falingtrea 0:3f52908a334d 128
falingtrea 0:3f52908a334d 129 result |= MPL3115A2::readRegister(CTRL_REG1, datain , 2);
falingtrea 0:3f52908a334d 130 dataout[0] = (datain[0] & 0xFE) | 0x01 ;
falingtrea 0:3f52908a334d 131 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout); // Set to active mode
falingtrea 0:3f52908a334d 132
falingtrea 0:3f52908a334d 133 return result;
mfiore 1:072fd24cc12b 134 }
falingtrea 0:3f52908a334d 135 uint8_t MPL3115A2::standbyMode(void)
falingtrea 0:3f52908a334d 136 {
falingtrea 0:3f52908a334d 137 uint8_t result = 0;
falingtrea 0:3f52908a334d 138 char datain[1];
falingtrea 0:3f52908a334d 139 char dataout[1];
falingtrea 0:3f52908a334d 140
falingtrea 0:3f52908a334d 141 result |= MPL3115A2::readRegister(CTRL_REG1, datain);
falingtrea 0:3f52908a334d 142 dataout[0] = (datain[0] & 0xFE);
falingtrea 0:3f52908a334d 143 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout); // Set to standby mode
falingtrea 0:3f52908a334d 144
falingtrea 0:3f52908a334d 145 return result;
mfiore 1:072fd24cc12b 146 }
falingtrea 0:3f52908a334d 147
falingtrea 0:3f52908a334d 148 uint8_t MPL3115A2::triggerOneShot(void)
falingtrea 0:3f52908a334d 149 {
falingtrea 0:3f52908a334d 150 uint8_t result = 0;
falingtrea 0:3f52908a334d 151 char datain[1];
falingtrea 0:3f52908a334d 152 char dataout[1];
falingtrea 0:3f52908a334d 153
falingtrea 0:3f52908a334d 154 result |= MPL3115A2::readRegister(CTRL_REG1, datain);
falingtrea 0:3f52908a334d 155 dataout[0] = ((datain[0] & 0xFD) | 0x02);
falingtrea 0:3f52908a334d 156 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout); // Trigger a measurement
falingtrea 0:3f52908a334d 157
falingtrea 0:3f52908a334d 158 return result;
mfiore 1:072fd24cc12b 159 }
mfiore 1:072fd24cc12b 160
falingtrea 0:3f52908a334d 161 uint8_t MPL3115A2::setAltitudeCalib(int16_t alti_calib)
falingtrea 0:3f52908a334d 162 {
falingtrea 0:3f52908a334d 163 uint8_t result = 0;
falingtrea 0:3f52908a334d 164 char dataout[1];
falingtrea 0:3f52908a334d 165
falingtrea 0:3f52908a334d 166 dataout[0] = alti_calib ;
falingtrea 0:3f52908a334d 167 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout); // set msb of calibration value
falingtrea 0:3f52908a334d 168
falingtrea 0:3f52908a334d 169 return result;
mfiore 1:072fd24cc12b 170 }
falingtrea 0:3f52908a334d 171
falingtrea 0:3f52908a334d 172 uint8_t MPL3115A2::clearMinMaxRegs(void)
falingtrea 0:3f52908a334d 173 {
falingtrea 0:3f52908a334d 174 uint8_t result = 0;
falingtrea 0:3f52908a334d 175 char datain[10];
falingtrea 0:3f52908a334d 176
falingtrea 0:3f52908a334d 177 memset(datain, 0, 10);
falingtrea 0:3f52908a334d 178 result = MPL3115A2::writeRegister(P_MIN_MSB, datain, 10);
falingtrea 0:3f52908a334d 179
falingtrea 0:3f52908a334d 180 return result;
mfiore 1:072fd24cc12b 181 }
falingtrea 0:3f52908a334d 182
falingtrea 0:3f52908a334d 183 uint8_t MPL3115A2::getStatus(void)
falingtrea 0:3f52908a334d 184 {
falingtrea 0:3f52908a334d 185 char datain[1];
falingtrea 0:3f52908a334d 186 uint8_t dataout;
falingtrea 0:3f52908a334d 187
falingtrea 0:3f52908a334d 188 MPL3115A2::readRegister(DR_STATUS, datain);
mfiore 1:072fd24cc12b 189 dataout = datain[0];
falingtrea 0:3f52908a334d 190
falingtrea 0:3f52908a334d 191 return dataout;
mfiore 1:072fd24cc12b 192 }
falingtrea 0:3f52908a334d 193
falingtrea 0:3f52908a334d 194 int32_t MPL3115A2::getBaroData(void)
falingtrea 0:3f52908a334d 195 {
mfiore 1:072fd24cc12b 196 if (_polling_mode) {
mfiore 1:072fd24cc12b 197 char datain[3];
falingtrea 0:3f52908a334d 198 MPL3115A2::readRegister(OUT_P_MSB, datain, 3);
mfiore 1:072fd24cc12b 199 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
mfiore 1:072fd24cc12b 200 * Altitude is 16 bit signed and pressure is 18 bit unsigned
mfiore 1:072fd24cc12b 201 */
falingtrea 0:3f52908a334d 202 _data._baro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2]<<8));
falingtrea 0:3f52908a334d 203 }
mfiore 1:072fd24cc12b 204 return _data._baro;
falingtrea 0:3f52908a334d 205 }
mfiore 1:072fd24cc12b 206
falingtrea 0:3f52908a334d 207 int16_t MPL3115A2::getTempData(void)
falingtrea 0:3f52908a334d 208 {
mfiore 1:072fd24cc12b 209 if (_polling_mode) {
falingtrea 0:3f52908a334d 210 char datain[2];
falingtrea 0:3f52908a334d 211 MPL3115A2::readRegister(OUT_T_MSB, datain, 2);
mfiore 1:072fd24cc12b 212 /* data is 12 bit signed with 4 LSB = 0 Need to shift first to 16 bits to preserve sign bit then
mfiore 1:072fd24cc12b 213 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 214 */
falingtrea 0:3f52908a334d 215 _data._temp = ((datain[0] << 8) | datain[1]);
falingtrea 0:3f52908a334d 216 _data._temp /= 16;
falingtrea 0:3f52908a334d 217 }
mfiore 1:072fd24cc12b 218 return _data._temp;
falingtrea 0:3f52908a334d 219 }
falingtrea 0:3f52908a334d 220
falingtrea 0:3f52908a334d 221 int32_t MPL3115A2::getMinBaro(bool clear_data)
falingtrea 0:3f52908a334d 222 {
mfiore 1:072fd24cc12b 223 if (_polling_mode) {
falingtrea 0:3f52908a334d 224 char datain[3];
falingtrea 0:3f52908a334d 225 MPL3115A2::readRegister(P_MIN_MSB, datain, 3);
falingtrea 0:3f52908a334d 226 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
falingtrea 0:3f52908a334d 227 * Altitude is 16 bit signed and pressure is 18 bit unsigned
falingtrea 0:3f52908a334d 228 */
falingtrea 0:3f52908a334d 229 _data._minbaro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2] << 8));
falingtrea 0:3f52908a334d 230
mfiore 1:072fd24cc12b 231 if (clear_data) {
mfiore 1:072fd24cc12b 232 memset(datain, 0, 3);
falingtrea 0:3f52908a334d 233 MPL3115A2::writeRegister(P_MIN_MSB, datain, 3);
falingtrea 0:3f52908a334d 234 }
falingtrea 0:3f52908a334d 235 }
falingtrea 0:3f52908a334d 236
falingtrea 0:3f52908a334d 237 return _data._minbaro;
falingtrea 0:3f52908a334d 238 }
falingtrea 0:3f52908a334d 239
falingtrea 0:3f52908a334d 240 int32_t MPL3115A2::getMaxBaro(bool clear_data)
falingtrea 0:3f52908a334d 241 {
mfiore 1:072fd24cc12b 242 if (_polling_mode) {
falingtrea 0:3f52908a334d 243 char datain[3];
falingtrea 0:3f52908a334d 244
falingtrea 0:3f52908a334d 245 MPL3115A2::readRegister(P_MAX_MSB, datain, 3);
falingtrea 0:3f52908a334d 246 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
falingtrea 0:3f52908a334d 247 * Altitude is 16 bit signed and pressure is 18 bit unsigned
falingtrea 0:3f52908a334d 248 */
falingtrea 0:3f52908a334d 249 _data._maxbaro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2] << 8));
falingtrea 0:3f52908a334d 250
mfiore 1:072fd24cc12b 251 if (clear_data) {
mfiore 1:072fd24cc12b 252 memset(datain, 0, 3);
falingtrea 0:3f52908a334d 253 MPL3115A2::writeRegister(P_MAX_MSB, datain, 3);
falingtrea 0:3f52908a334d 254 }
falingtrea 0:3f52908a334d 255 }
falingtrea 0:3f52908a334d 256
falingtrea 0:3f52908a334d 257 return _data._maxbaro;
falingtrea 0:3f52908a334d 258 }
falingtrea 0:3f52908a334d 259
falingtrea 0:3f52908a334d 260 int16_t MPL3115A2::getMinTemp(bool clear_data)
falingtrea 0:3f52908a334d 261 {
mfiore 1:072fd24cc12b 262 if (_polling_mode) {
falingtrea 0:3f52908a334d 263 char datain[2];
falingtrea 0:3f52908a334d 264 MPL3115A2::readRegister(T_MIN_MSB, datain, 2);
mfiore 1:072fd24cc12b 265 /* data is 12 bit signed with 4 LSB = 0 Need to shift first to 16 bits to preserve sign bit then
mfiore 1:072fd24cc12b 266 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 267 */
falingtrea 0:3f52908a334d 268 _data._mintemp = ((datain[0] << 8) | datain[1] );
falingtrea 0:3f52908a334d 269 _data._mintemp /= 16;
falingtrea 0:3f52908a334d 270
mfiore 1:072fd24cc12b 271 if (clear_data) {
mfiore 1:072fd24cc12b 272 memset(datain, 0, 2);
falingtrea 0:3f52908a334d 273 MPL3115A2::writeRegister(T_MIN_MSB, datain, 2);
falingtrea 0:3f52908a334d 274 }
falingtrea 0:3f52908a334d 275 }
falingtrea 0:3f52908a334d 276
falingtrea 0:3f52908a334d 277 return _data._mintemp;
mfiore 1:072fd24cc12b 278 }
mfiore 1:072fd24cc12b 279
falingtrea 0:3f52908a334d 280 int16_t MPL3115A2::getMaxTemp(bool clear_data)
falingtrea 0:3f52908a334d 281 {
mfiore 1:072fd24cc12b 282 if (_polling_mode) {
falingtrea 0:3f52908a334d 283 char datain[2];
falingtrea 0:3f52908a334d 284 MPL3115A2::readRegister(T_MIN_MSB, datain, 2);
mfiore 1:072fd24cc12b 285 /* data is 12 bit signed with 4 LSB = 0 Need to shift first to 16 bits to preserve sign bit then
mfiore 1:072fd24cc12b 286 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 287 */
falingtrea 0:3f52908a334d 288 _data._maxtemp = ((datain[0] << 8) | datain[1] );
falingtrea 0:3f52908a334d 289 _data._maxtemp /= 16;
falingtrea 0:3f52908a334d 290
mfiore 1:072fd24cc12b 291 if (clear_data) {
mfiore 1:072fd24cc12b 292 memset(datain, 0, 2);
falingtrea 0:3f52908a334d 293 MPL3115A2::writeRegister(T_MAX_MSB, datain, 2);
falingtrea 0:3f52908a334d 294 }
mfiore 1:072fd24cc12b 295 }
falingtrea 0:3f52908a334d 296
falingtrea 0:3f52908a334d 297 return _data._maxtemp;
mfiore 1:072fd24cc12b 298 }
falingtrea 0:3f52908a334d 299
falingtrea 0:3f52908a334d 300 MPL3115A2_DATA MPL3115A2::getAllData(bool clear_data)
falingtrea 0:3f52908a334d 301 {
falingtrea 0:3f52908a334d 302
mfiore 1:072fd24cc12b 303 if (_polling_mode) {
falingtrea 0:3f52908a334d 304 char datain[10];
falingtrea 0:3f52908a334d 305 MPL3115A2::readRegister(OUT_P_MSB, datain, 5);
falingtrea 0:3f52908a334d 306 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
falingtrea 0:3f52908a334d 307 * Altitude is 16 bit signed and pressure is 18 bit unsigned
falingtrea 0:3f52908a334d 308 */
falingtrea 0:3f52908a334d 309 _data._baro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2]<<8));
falingtrea 0:3f52908a334d 310
mfiore 1:072fd24cc12b 311 /* data is 12 bit signed with 4 LSB = 0 Need to shift first to 16 bits to preserve sign bit then
mfiore 1:072fd24cc12b 312 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 313 */
falingtrea 0:3f52908a334d 314 _data._temp = ((datain[3] << 8) | datain[4]);
falingtrea 0:3f52908a334d 315 _data._temp /= 16;
falingtrea 0:3f52908a334d 316
mfiore 1:072fd24cc12b 317 MPL3115A2::readRegister(P_MIN_MSB, datain, 10);
mfiore 1:072fd24cc12b 318 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
mfiore 1:072fd24cc12b 319 * Altitude is 16 bit signed and pressure is 18 bit unsigned
mfiore 1:072fd24cc12b 320 * temperature data is 12 bit signed with 4 LSB = 0 Need to shift first to 16 bits to preserve sign bit then
mfiore 1:072fd24cc12b 321 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 322 */
falingtrea 0:3f52908a334d 323 _data._minbaro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2] << 8));
falingtrea 0:3f52908a334d 324 _data._mintemp = ((datain[3] << 8) | datain[4] );
falingtrea 0:3f52908a334d 325 _data._mintemp /= 16;
falingtrea 0:3f52908a334d 326 _data._maxbaro = ((datain[5] << 24) | (datain[6] << 16) | (datain[7] << 8));
falingtrea 0:3f52908a334d 327 _data._maxtemp = ((datain[8] << 8) | datain[9] );
falingtrea 0:3f52908a334d 328 _data._maxtemp /= 16;
falingtrea 0:3f52908a334d 329
mfiore 1:072fd24cc12b 330 if (clear_data) {
mfiore 1:072fd24cc12b 331 MPL3115A2::clearMinMaxRegs();
falingtrea 0:3f52908a334d 332 }
mfiore 1:072fd24cc12b 333 }
falingtrea 0:3f52908a334d 334
falingtrea 0:3f52908a334d 335 return _data;
falingtrea 0:3f52908a334d 336 }
falingtrea 0:3f52908a334d 337
falingtrea 0:3f52908a334d 338 uint8_t MPL3115A2::writeRegister(uint8_t reg, char* data, uint8_t count)
falingtrea 0:3f52908a334d 339 {
falingtrea 0:3f52908a334d 340 char buf[11];
falingtrea 0:3f52908a334d 341 uint8_t result = 0;
falingtrea 0:3f52908a334d 342
falingtrea 0:3f52908a334d 343 buf[0] = reg;
falingtrea 0:3f52908a334d 344 memcpy(buf+1,data,count);
falingtrea 0:3f52908a334d 345
falingtrea 0:3f52908a334d 346 result |= _i2c->write(_i2c_addr, buf, (count + 1));
mfiore 1:072fd24cc12b 347
mfiore 1:072fd24cc12b 348 if(result != 0) {
Leon Lindenfelser 3:c41ffe71300f 349 debug("MPL3115A2:writeRegister failed r-%d\n\r",result);
falingtrea 0:3f52908a334d 350 }
mfiore 1:072fd24cc12b 351
falingtrea 0:3f52908a334d 352 return result;
falingtrea 0:3f52908a334d 353 }
falingtrea 0:3f52908a334d 354
falingtrea 0:3f52908a334d 355 uint8_t MPL3115A2::readRegister(uint8_t reg, char* data, uint8_t count)
falingtrea 0:3f52908a334d 356 {
falingtrea 0:3f52908a334d 357 uint8_t result = 0;
falingtrea 0:3f52908a334d 358 char reg_out[1];
mfiore 1:072fd24cc12b 359
falingtrea 0:3f52908a334d 360 reg_out[0] = reg;
mfiore 1:072fd24cc12b 361 result |= _i2c->write(_i2c_addr,reg_out,1,true);
falingtrea 0:3f52908a334d 362
mfiore 1:072fd24cc12b 363 if(result != 0) {
falingtrea 0:3f52908a334d 364 debug("MPL3115A2::readRegister failed write\n\r");
falingtrea 0:3f52908a334d 365 return result;
falingtrea 0:3f52908a334d 366 }
mfiore 1:072fd24cc12b 367
mfiore 1:072fd24cc12b 368 result |= _i2c->read(_i2c_addr,data,count,false);
falingtrea 0:3f52908a334d 369
mfiore 1:072fd24cc12b 370 if(result != 0) {
falingtrea 0:3f52908a334d 371 debug("MPL3115A2::readRegister failed read\n\r");
falingtrea 0:3f52908a334d 372 }
mfiore 1:072fd24cc12b 373
falingtrea 0:3f52908a334d 374 return result;
falingtrea 0:3f52908a334d 375 }