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@4:b612babc2c3b, 2017-07-31 (annotated)

Committer:
rklaassen
Date:
Mon Jul 31 17:34:55 2017 -0500
Revision:
4:b612babc2c3b
Parent:
3:c41ffe71300f
Child:
5:8be678fd9e55
Removed initial result check on MPL3115A2 since it fails on versions past mbed-os-5.2.0

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);
rklaassen 4:b612babc2c3b 60 do {
rklaassen 4:b612babc2c3b 61 // wait for the reset bit to clear. readRegister may error out so we re-try 10 times
rklaassen 4:b612babc2c3b 62 osDelay(200);
rklaassen 4:b612babc2c3b 63 reg_val[0] = 0x40;
rklaassen 4:b612babc2c3b 64 result = MPL3115A2::readRegister(CTRL_REG1,reg_val);
rklaassen 4:b612babc2c3b 65 reg_val[0] = reg_val[0] & 0x04;
rklaassen 4:b612babc2c3b 66 i++;
rklaassen 4:b612babc2c3b 67 } while(((reg_val[0] != 0) || (result != 0)) && (i<=10));
falingtrea 0:3f52908a334d 68
mfiore 1:072fd24cc12b 69 if ((result == 0) && (MPL3115A2::testWhoAmI() == true)) {
falingtrea 0:3f52908a334d 70
mfiore 1:072fd24cc12b 71 if ((_int1 == NULL) && (_int2 == NULL)) {
mfiore 1:072fd24cc12b 72 _polling_mode = true;
mfiore 1:072fd24cc12b 73 reg_val[0] = 0x07;
mfiore 1:072fd24cc12b 74 result |= MPL3115A2::writeRegister(PT_DATA_CFG,reg_val);
mfiore 1:072fd24cc12b 75 } else _polling_mode = false;
mfiore 1:072fd24cc12b 76 } else {
mfiore 1:072fd24cc12b 77 debug ("Device not supported by this library!\n\r");
mfiore 1:072fd24cc12b 78 result = 1;
falingtrea 0:3f52908a334d 79 }
falingtrea 0:3f52908a334d 80
mfiore 1:072fd24cc12b 81 if(result != 0) {
falingtrea 0:3f52908a334d 82 debug("MPL3115A2:init failed\n\r");
falingtrea 0:3f52908a334d 83 }
rklaassen 4:b612babc2c3b 84 _i2c->stop();
falingtrea 0:3f52908a334d 85 return result;
falingtrea 0:3f52908a334d 86 }
falingtrea 0:3f52908a334d 87
falingtrea 0:3f52908a334d 88 uint8_t MPL3115A2::setParameters(OUTPUT_MODE out_mode, DATA_MODE data_mode, OVERSAMPLE_RATIO os_ratio,
mfiore 1:072fd24cc12b 89 ACQUISITION_TIMER measure_time)
falingtrea 0:3f52908a334d 90 {
falingtrea 0:3f52908a334d 91 uint8_t result = 0;
falingtrea 0:3f52908a334d 92 char datain[4];
falingtrea 0:3f52908a334d 93 char dataout[4];
falingtrea 0:3f52908a334d 94
falingtrea 0:3f52908a334d 95 result |= MPL3115A2::readRegister(SYSMOD, datain); // Make sure MPL3115A2 is in Stand-By mode
mfiore 1:072fd24cc12b 96 if ((datain[0] & 0x01) != 0 ) {
mfiore 1:072fd24cc12b 97 debug ("MPL3115A2 not in STAND BY mode\n\f");
falingtrea 0:3f52908a334d 98 debug("MPL3115A2:setParameters failed\n\r");
falingtrea 0:3f52908a334d 99 result = 1;
falingtrea 0:3f52908a334d 100 return result;
falingtrea 0:3f52908a334d 101 }
falingtrea 0:3f52908a334d 102
falingtrea 0:3f52908a334d 103 result |= MPL3115A2::readRegister(CTRL_REG1, datain, 2);
falingtrea 0:3f52908a334d 104 dataout[0] = (datain[0] & 0x07) | os_ratio | out_mode | data_mode;
falingtrea 0:3f52908a334d 105 dataout[1] = (datain[1] & 0xF0) | measure_time;
falingtrea 0:3f52908a334d 106 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout, 2);
falingtrea 0:3f52908a334d 107
mfiore 1:072fd24cc12b 108 if(result != 0) {
falingtrea 0:3f52908a334d 109 debug("MPL3115A2:setParameters failed\n\r");
falingtrea 0:3f52908a334d 110 }
mfiore 1:072fd24cc12b 111
mfiore 1:072fd24cc12b 112 return result;
falingtrea 0:3f52908a334d 113 }
falingtrea 0:3f52908a334d 114
falingtrea 0:3f52908a334d 115 uint8_t MPL3115A2::enableFIFO(void)
falingtrea 0:3f52908a334d 116 {
falingtrea 0:3f52908a334d 117 uint8_t result = 0;
falingtrea 0:3f52908a334d 118 return result;
mfiore 1:072fd24cc12b 119 }
falingtrea 0:3f52908a334d 120
falingtrea 0:3f52908a334d 121 uint8_t MPL3115A2::activeMode(void)
falingtrea 0:3f52908a334d 122 {
falingtrea 0:3f52908a334d 123 uint8_t result = 0;
falingtrea 0:3f52908a334d 124 char datain[1];
falingtrea 0:3f52908a334d 125 char dataout[1];
falingtrea 0:3f52908a334d 126
falingtrea 0:3f52908a334d 127 result |= MPL3115A2::readRegister(CTRL_REG1, datain , 2);
falingtrea 0:3f52908a334d 128 dataout[0] = (datain[0] & 0xFE) | 0x01 ;
falingtrea 0:3f52908a334d 129 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout); // Set to active mode
falingtrea 0:3f52908a334d 130
falingtrea 0:3f52908a334d 131 return result;
mfiore 1:072fd24cc12b 132 }
falingtrea 0:3f52908a334d 133 uint8_t MPL3115A2::standbyMode(void)
falingtrea 0:3f52908a334d 134 {
falingtrea 0:3f52908a334d 135 uint8_t result = 0;
falingtrea 0:3f52908a334d 136 char datain[1];
falingtrea 0:3f52908a334d 137 char dataout[1];
falingtrea 0:3f52908a334d 138
falingtrea 0:3f52908a334d 139 result |= MPL3115A2::readRegister(CTRL_REG1, datain);
falingtrea 0:3f52908a334d 140 dataout[0] = (datain[0] & 0xFE);
falingtrea 0:3f52908a334d 141 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout); // Set to standby mode
falingtrea 0:3f52908a334d 142
falingtrea 0:3f52908a334d 143 return result;
mfiore 1:072fd24cc12b 144 }
falingtrea 0:3f52908a334d 145
falingtrea 0:3f52908a334d 146 uint8_t MPL3115A2::triggerOneShot(void)
falingtrea 0:3f52908a334d 147 {
falingtrea 0:3f52908a334d 148 uint8_t result = 0;
falingtrea 0:3f52908a334d 149 char datain[1];
falingtrea 0:3f52908a334d 150 char dataout[1];
falingtrea 0:3f52908a334d 151
falingtrea 0:3f52908a334d 152 result |= MPL3115A2::readRegister(CTRL_REG1, datain);
falingtrea 0:3f52908a334d 153 dataout[0] = ((datain[0] & 0xFD) | 0x02);
falingtrea 0:3f52908a334d 154 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout); // Trigger a measurement
falingtrea 0:3f52908a334d 155
falingtrea 0:3f52908a334d 156 return result;
mfiore 1:072fd24cc12b 157 }
mfiore 1:072fd24cc12b 158
falingtrea 0:3f52908a334d 159 uint8_t MPL3115A2::setAltitudeCalib(int16_t alti_calib)
falingtrea 0:3f52908a334d 160 {
falingtrea 0:3f52908a334d 161 uint8_t result = 0;
falingtrea 0:3f52908a334d 162 char dataout[1];
falingtrea 0:3f52908a334d 163
falingtrea 0:3f52908a334d 164 dataout[0] = alti_calib ;
falingtrea 0:3f52908a334d 165 result |= MPL3115A2::writeRegister(CTRL_REG1, dataout); // set msb of calibration value
falingtrea 0:3f52908a334d 166
falingtrea 0:3f52908a334d 167 return result;
mfiore 1:072fd24cc12b 168 }
falingtrea 0:3f52908a334d 169
falingtrea 0:3f52908a334d 170 uint8_t MPL3115A2::clearMinMaxRegs(void)
falingtrea 0:3f52908a334d 171 {
falingtrea 0:3f52908a334d 172 uint8_t result = 0;
falingtrea 0:3f52908a334d 173 char datain[10];
falingtrea 0:3f52908a334d 174
falingtrea 0:3f52908a334d 175 memset(datain, 0, 10);
falingtrea 0:3f52908a334d 176 result = MPL3115A2::writeRegister(P_MIN_MSB, datain, 10);
falingtrea 0:3f52908a334d 177
falingtrea 0:3f52908a334d 178 return result;
mfiore 1:072fd24cc12b 179 }
falingtrea 0:3f52908a334d 180
falingtrea 0:3f52908a334d 181 uint8_t MPL3115A2::getStatus(void)
falingtrea 0:3f52908a334d 182 {
falingtrea 0:3f52908a334d 183 char datain[1];
falingtrea 0:3f52908a334d 184 uint8_t dataout;
falingtrea 0:3f52908a334d 185
falingtrea 0:3f52908a334d 186 MPL3115A2::readRegister(DR_STATUS, datain);
mfiore 1:072fd24cc12b 187 dataout = datain[0];
falingtrea 0:3f52908a334d 188
falingtrea 0:3f52908a334d 189 return dataout;
mfiore 1:072fd24cc12b 190 }
falingtrea 0:3f52908a334d 191
falingtrea 0:3f52908a334d 192 int32_t MPL3115A2::getBaroData(void)
falingtrea 0:3f52908a334d 193 {
mfiore 1:072fd24cc12b 194 if (_polling_mode) {
mfiore 1:072fd24cc12b 195 char datain[3];
falingtrea 0:3f52908a334d 196 MPL3115A2::readRegister(OUT_P_MSB, datain, 3);
mfiore 1:072fd24cc12b 197 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
mfiore 1:072fd24cc12b 198 * Altitude is 16 bit signed and pressure is 18 bit unsigned
mfiore 1:072fd24cc12b 199 */
falingtrea 0:3f52908a334d 200 _data._baro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2]<<8));
falingtrea 0:3f52908a334d 201 }
mfiore 1:072fd24cc12b 202 return _data._baro;
falingtrea 0:3f52908a334d 203 }
mfiore 1:072fd24cc12b 204
falingtrea 0:3f52908a334d 205 int16_t MPL3115A2::getTempData(void)
falingtrea 0:3f52908a334d 206 {
mfiore 1:072fd24cc12b 207 if (_polling_mode) {
falingtrea 0:3f52908a334d 208 char datain[2];
falingtrea 0:3f52908a334d 209 MPL3115A2::readRegister(OUT_T_MSB, datain, 2);
mfiore 1:072fd24cc12b 210 /* data is 12 bit signed with 4 LSB = 0 Need to shift first to 16 bits to preserve sign bit then
mfiore 1:072fd24cc12b 211 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 212 */
falingtrea 0:3f52908a334d 213 _data._temp = ((datain[0] << 8) | datain[1]);
falingtrea 0:3f52908a334d 214 _data._temp /= 16;
falingtrea 0:3f52908a334d 215 }
mfiore 1:072fd24cc12b 216 return _data._temp;
falingtrea 0:3f52908a334d 217 }
falingtrea 0:3f52908a334d 218
falingtrea 0:3f52908a334d 219 int32_t MPL3115A2::getMinBaro(bool clear_data)
falingtrea 0:3f52908a334d 220 {
mfiore 1:072fd24cc12b 221 if (_polling_mode) {
falingtrea 0:3f52908a334d 222 char datain[3];
falingtrea 0:3f52908a334d 223 MPL3115A2::readRegister(P_MIN_MSB, datain, 3);
falingtrea 0:3f52908a334d 224 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
falingtrea 0:3f52908a334d 225 * Altitude is 16 bit signed and pressure is 18 bit unsigned
falingtrea 0:3f52908a334d 226 */
falingtrea 0:3f52908a334d 227 _data._minbaro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2] << 8));
falingtrea 0:3f52908a334d 228
mfiore 1:072fd24cc12b 229 if (clear_data) {
mfiore 1:072fd24cc12b 230 memset(datain, 0, 3);
falingtrea 0:3f52908a334d 231 MPL3115A2::writeRegister(P_MIN_MSB, datain, 3);
falingtrea 0:3f52908a334d 232 }
falingtrea 0:3f52908a334d 233 }
falingtrea 0:3f52908a334d 234
falingtrea 0:3f52908a334d 235 return _data._minbaro;
falingtrea 0:3f52908a334d 236 }
falingtrea 0:3f52908a334d 237
falingtrea 0:3f52908a334d 238 int32_t MPL3115A2::getMaxBaro(bool clear_data)
falingtrea 0:3f52908a334d 239 {
mfiore 1:072fd24cc12b 240 if (_polling_mode) {
falingtrea 0:3f52908a334d 241 char datain[3];
falingtrea 0:3f52908a334d 242
falingtrea 0:3f52908a334d 243 MPL3115A2::readRegister(P_MAX_MSB, datain, 3);
falingtrea 0:3f52908a334d 244 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
falingtrea 0:3f52908a334d 245 * Altitude is 16 bit signed and pressure is 18 bit unsigned
falingtrea 0:3f52908a334d 246 */
falingtrea 0:3f52908a334d 247 _data._maxbaro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2] << 8));
falingtrea 0:3f52908a334d 248
mfiore 1:072fd24cc12b 249 if (clear_data) {
mfiore 1:072fd24cc12b 250 memset(datain, 0, 3);
falingtrea 0:3f52908a334d 251 MPL3115A2::writeRegister(P_MAX_MSB, datain, 3);
falingtrea 0:3f52908a334d 252 }
falingtrea 0:3f52908a334d 253 }
falingtrea 0:3f52908a334d 254
falingtrea 0:3f52908a334d 255 return _data._maxbaro;
falingtrea 0:3f52908a334d 256 }
falingtrea 0:3f52908a334d 257
falingtrea 0:3f52908a334d 258 int16_t MPL3115A2::getMinTemp(bool clear_data)
falingtrea 0:3f52908a334d 259 {
mfiore 1:072fd24cc12b 260 if (_polling_mode) {
falingtrea 0:3f52908a334d 261 char datain[2];
falingtrea 0:3f52908a334d 262 MPL3115A2::readRegister(T_MIN_MSB, datain, 2);
mfiore 1:072fd24cc12b 263 /* data is 12 bit signed with 4 LSB = 0 Need to shift first to 16 bits to preserve sign bit then
mfiore 1:072fd24cc12b 264 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 265 */
falingtrea 0:3f52908a334d 266 _data._mintemp = ((datain[0] << 8) | datain[1] );
falingtrea 0:3f52908a334d 267 _data._mintemp /= 16;
falingtrea 0:3f52908a334d 268
mfiore 1:072fd24cc12b 269 if (clear_data) {
mfiore 1:072fd24cc12b 270 memset(datain, 0, 2);
falingtrea 0:3f52908a334d 271 MPL3115A2::writeRegister(T_MIN_MSB, datain, 2);
falingtrea 0:3f52908a334d 272 }
falingtrea 0:3f52908a334d 273 }
falingtrea 0:3f52908a334d 274
falingtrea 0:3f52908a334d 275 return _data._mintemp;
mfiore 1:072fd24cc12b 276 }
mfiore 1:072fd24cc12b 277
falingtrea 0:3f52908a334d 278 int16_t MPL3115A2::getMaxTemp(bool clear_data)
falingtrea 0:3f52908a334d 279 {
mfiore 1:072fd24cc12b 280 if (_polling_mode) {
falingtrea 0:3f52908a334d 281 char datain[2];
falingtrea 0:3f52908a334d 282 MPL3115A2::readRegister(T_MIN_MSB, datain, 2);
mfiore 1:072fd24cc12b 283 /* data is 12 bit signed with 4 LSB = 0 Need to shift first to 16 bits to preserve sign bit then
mfiore 1:072fd24cc12b 284 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 285 */
falingtrea 0:3f52908a334d 286 _data._maxtemp = ((datain[0] << 8) | datain[1] );
falingtrea 0:3f52908a334d 287 _data._maxtemp /= 16;
falingtrea 0:3f52908a334d 288
mfiore 1:072fd24cc12b 289 if (clear_data) {
mfiore 1:072fd24cc12b 290 memset(datain, 0, 2);
falingtrea 0:3f52908a334d 291 MPL3115A2::writeRegister(T_MAX_MSB, datain, 2);
falingtrea 0:3f52908a334d 292 }
mfiore 1:072fd24cc12b 293 }
falingtrea 0:3f52908a334d 294
falingtrea 0:3f52908a334d 295 return _data._maxtemp;
mfiore 1:072fd24cc12b 296 }
falingtrea 0:3f52908a334d 297
falingtrea 0:3f52908a334d 298 MPL3115A2_DATA MPL3115A2::getAllData(bool clear_data)
falingtrea 0:3f52908a334d 299 {
falingtrea 0:3f52908a334d 300
mfiore 1:072fd24cc12b 301 if (_polling_mode) {
falingtrea 0:3f52908a334d 302 char datain[10];
falingtrea 0:3f52908a334d 303 MPL3115A2::readRegister(OUT_P_MSB, datain, 5);
falingtrea 0:3f52908a334d 304 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
falingtrea 0:3f52908a334d 305 * Altitude is 16 bit signed and pressure is 18 bit unsigned
falingtrea 0:3f52908a334d 306 */
falingtrea 0:3f52908a334d 307 _data._baro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2]<<8));
falingtrea 0:3f52908a334d 308
mfiore 1:072fd24cc12b 309 /* data is 12 bit signed with 4 LSB = 0 Need to shift first to 16 bits to preserve sign bit then
mfiore 1:072fd24cc12b 310 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 311 */
falingtrea 0:3f52908a334d 312 _data._temp = ((datain[3] << 8) | datain[4]);
falingtrea 0:3f52908a334d 313 _data._temp /= 16;
falingtrea 0:3f52908a334d 314
mfiore 1:072fd24cc12b 315 MPL3115A2::readRegister(P_MIN_MSB, datain, 10);
mfiore 1:072fd24cc12b 316 /* data is 20 bit signed/unsigned with 4 LSB = 0 Need to shift to 32 bits to preserve sign bit
mfiore 1:072fd24cc12b 317 * Altitude is 16 bit signed and pressure is 18 bit unsigned
mfiore 1:072fd24cc12b 318 * 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 319 * divide by 16 to remove LSBs
mfiore 1:072fd24cc12b 320 */
falingtrea 0:3f52908a334d 321 _data._minbaro = ((datain[0] << 24) | (datain[1] << 16) | (datain[2] << 8));
falingtrea 0:3f52908a334d 322 _data._mintemp = ((datain[3] << 8) | datain[4] );
falingtrea 0:3f52908a334d 323 _data._mintemp /= 16;
falingtrea 0:3f52908a334d 324 _data._maxbaro = ((datain[5] << 24) | (datain[6] << 16) | (datain[7] << 8));
falingtrea 0:3f52908a334d 325 _data._maxtemp = ((datain[8] << 8) | datain[9] );
falingtrea 0:3f52908a334d 326 _data._maxtemp /= 16;
falingtrea 0:3f52908a334d 327
mfiore 1:072fd24cc12b 328 if (clear_data) {
mfiore 1:072fd24cc12b 329 MPL3115A2::clearMinMaxRegs();
falingtrea 0:3f52908a334d 330 }
mfiore 1:072fd24cc12b 331 }
falingtrea 0:3f52908a334d 332
falingtrea 0:3f52908a334d 333 return _data;
falingtrea 0:3f52908a334d 334 }
falingtrea 0:3f52908a334d 335
falingtrea 0:3f52908a334d 336 uint8_t MPL3115A2::writeRegister(uint8_t reg, char* data, uint8_t count)
falingtrea 0:3f52908a334d 337 {
falingtrea 0:3f52908a334d 338 char buf[11];
falingtrea 0:3f52908a334d 339 uint8_t result = 0;
falingtrea 0:3f52908a334d 340
falingtrea 0:3f52908a334d 341 buf[0] = reg;
falingtrea 0:3f52908a334d 342 memcpy(buf+1,data,count);
falingtrea 0:3f52908a334d 343
falingtrea 0:3f52908a334d 344 result |= _i2c->write(_i2c_addr, buf, (count + 1));
mfiore 1:072fd24cc12b 345
mfiore 1:072fd24cc12b 346 if(result != 0) {
Leon Lindenfelser 3:c41ffe71300f 347 debug("MPL3115A2:writeRegister failed r-%d\n\r",result);
falingtrea 0:3f52908a334d 348 }
mfiore 1:072fd24cc12b 349
falingtrea 0:3f52908a334d 350 return result;
falingtrea 0:3f52908a334d 351 }
falingtrea 0:3f52908a334d 352
falingtrea 0:3f52908a334d 353 uint8_t MPL3115A2::readRegister(uint8_t reg, char* data, uint8_t count)
falingtrea 0:3f52908a334d 354 {
falingtrea 0:3f52908a334d 355 uint8_t result = 0;
falingtrea 0:3f52908a334d 356 char reg_out[1];
mfiore 1:072fd24cc12b 357
falingtrea 0:3f52908a334d 358 reg_out[0] = reg;
mfiore 1:072fd24cc12b 359 result |= _i2c->write(_i2c_addr,reg_out,1,true);
falingtrea 0:3f52908a334d 360
mfiore 1:072fd24cc12b 361 if(result != 0) {
falingtrea 0:3f52908a334d 362 debug("MPL3115A2::readRegister failed write\n\r");
falingtrea 0:3f52908a334d 363 return result;
falingtrea 0:3f52908a334d 364 }
mfiore 1:072fd24cc12b 365
mfiore 1:072fd24cc12b 366 result |= _i2c->read(_i2c_addr,data,count,false);
falingtrea 0:3f52908a334d 367
mfiore 1:072fd24cc12b 368 if(result != 0) {
falingtrea 0:3f52908a334d 369 debug("MPL3115A2::readRegister failed read\n\r");
falingtrea 0:3f52908a334d 370 }
mfiore 1:072fd24cc12b 371
falingtrea 0:3f52908a334d 372 return result;
falingtrea 0:3f52908a334d 373 }