ST Expansion SW Team / LSM303AGR_JS

Javascript wrappers for LSM303AGR Sensor library

Dependencies:   LSM303AGR

Dependents:   ST_SENSOR_JS

LSM303AGR_JS.cpp@2:ddbdfca82832, 2017-10-25 (annotated)

Committer:
akhtar.syedzeeshan@gmail.com
Date:
Wed Oct 25 14:00:26 2017 +0200
Revision:
2:ddbdfca82832
Parent:
1:78c55e099d6c
Child:
3:d076984ee23b
Fully implemented DevI2C support

Who changed what in which revision?

UserRevisionLine numberNew contents of line
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 1 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 2 ******************************************************************************
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 3 * @file LSM303AGR_JS.cpp
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 4 * @author ST
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 5 * @version V1.0.0
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 6 * @date 9 October 2017
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 7 * @brief Implementation of an LSM303AGR Accelerometer and Magnetometer sensor for
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 8 * use with Javascript.
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 9 ******************************************************************************
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 10 * @attention
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 11 *
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 12 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 13 *
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 14 * Redistribution and use in source and binary forms, with or without modification,
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 15 * are permitted provided that the following conditions are met:
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 16 * 1. Redistributions of source code must retain the above copyright notice,
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 17 * this list of conditions and the following disclaimer.
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 19 * this list of conditions and the following disclaimer in the documentation
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 20 * and/or other materials provided with the distribution.
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 21 * 3. Neither the name of STMicroelectronics nor the names of its contributors
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 22 * may be used to endorse or promote products derived from this software
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 23 * without specific prior written permission.
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 24 *
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 28 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 35 *
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 36 ******************************************************************************
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 37 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 38
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 39
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 40 /* Includes ------------------------------------------------------------------*/
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 41
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 42 #include "LSM303AGR_JS.h"
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 43
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 44 #include <stdlib.h> /* atoi */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 45 #include "mbed.h"
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 46
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 47 /* Helper function for printing floats & doubles */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 48 static char *print_double(char* str, double v, int decimalDigits=2)
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 49 {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 50 int i = 1;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 51 int intPart, fractPart;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 52 int len;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 53 char *ptr;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 54
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 55 /* prepare decimal digits multiplicator */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 56 for (;decimalDigits!=0; i*=10, decimalDigits--);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 57
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 58 /* calculate integer & fractinal parts */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 59 intPart = (int)v;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 60 fractPart = (int)((v-(double)(int)v)*i);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 61
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 62 /* fill in integer part */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 63 sprintf(str, "%i.", intPart);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 64
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 65 /* prepare fill in of fractional part */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 66 len = strlen(str);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 67 ptr = &str[len];
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 68
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 69 /* fill in leading fractional zeros */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 70 for (i/=10;i>1; i/=10, ptr++) {
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 71 if (fractPart >= i) {
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 72 break;
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 73 }
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 74 *ptr = '0';
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 75 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 76
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 77 /* fill in (rest of) fractional part */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 78 sprintf(ptr, "%i", fractPart);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 79
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 80 return str;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 81 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 82
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 83 /* Helper function for creating JSON for data */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 84 char *LSM303AGR_JS::make_json(char* str, int32_t *data, char *axes, int data_count)
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 85 {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 86 char *ptr;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 87 ptr = str;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 88 str[0] = 0;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 89
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 90 for(int i = 0; i < data_count; i++){
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 91 //printf("len: %i\n", strlen(str));
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 92 if(i == 0){
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 93 sprintf(ptr, "{");
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 94 ptr = &str[strlen(str)];
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 95 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 96 else{
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 97 sprintf(ptr, ",");
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 98 ptr = &str[strlen(str)];
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 99 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 100 sprintf(ptr, "\"%c\":%i", axes[i], data[i]);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 101 ptr = &str[strlen(str)];
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 102
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 103 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 104 sprintf(ptr, "}");
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 105 return str;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 106 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 107
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 108 /* Class Implementation ------------------------------------------------------*/
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 109
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 110 /** Constructor
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 111 * @brief Initiaze the component.
akhtar.syedzeeshan@gmail.com 2:ddbdfca82832 112 * @param devI2c object of an helper class which handles the DevI2C peripheral
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 113 */
akhtar.syedzeeshan@gmail.com 2:ddbdfca82832 114 LSM303AGR_JS::LSM303AGR_JS(DevI2C &devI2c){
akhtar.syedzeeshan@gmail.com 2:ddbdfca82832 115 magnetometer = new LSM303AGRMagSensor (&devI2c);
akhtar.syedzeeshan@gmail.com 2:ddbdfca82832 116 accelerometer = new LSM303AGRAccSensor (&devI2c);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 117
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 118 magnetometer->init(NULL);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 119 accelerometer->init(NULL);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 120
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 121 magnetometer->enable();
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 122 accelerometer->enable();
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 123 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 124
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 125 /** Destructor
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 126 * @brief Recycle the component.
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 127 * Deletes the Sensor Object
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 128 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 129 LSM303AGR_JS::~LSM303AGR_JS(){
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 130 if(magnetometer != NULL){
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 131 delete magnetometer;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 132 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 133 if(accelerometer != NULL){
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 134 delete accelerometer;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 135 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 136 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 137
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 138 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 139 * @brief Read ID address of LSM303AGR Magnetometer
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 140 * @retval The ID of the Sensor
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 141 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 142 uint8_t LSM303AGR_JS::readMagnetometerID(){
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 143 uint8_t result;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 144 magnetometer->read_id(&result);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 145 return result;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 146 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 147
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 148 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 149 * @brief Read ID address of LSM303AGR Accelerometer
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 150 * @retval The ID of the Sensor
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 151 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 152 uint8_t LSM303AGR_JS::readAccelerometerID(){
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 153 uint8_t result;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 154 accelerometer->read_id(&result);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 155 return result;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 156 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 157
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 158 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 159 * @brief Get the accleremeter reading from LSM303AGR
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 160 * @retval Accleremeter value
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 161 */
akhtar.syedzeeshan@gmail.com 2:ddbdfca82832 162 int32_t *LSM303AGR_JS::get_accelerometer_axes(int32_t *axes){
akhtar.syedzeeshan@gmail.com 2:ddbdfca82832 163 accelerometer->get_x_axes(axes);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 164 printf("LSM303AGR [acc/mg]: %6ld, %6ld, %6ld\r\n", axes[0], axes[1], axes[2]);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 165 return axes;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 166 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 167
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 168 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 169 * @brief Get the accleremeter reading from LSM303AGR
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 170 * @retval Accleremeter value in JSON string form
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 171 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 172
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 173 char *LSM303AGR_JS::get_accelerometer_axes_json(char *data){
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 174 int32_t axes[3];
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 175 accelerometer->get_x_axes(axes);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 176 //printf("LSM303AGR [acc/mg]: %6ld, %6ld, %6ld\r\n", axes[0], axes[1], axes[2]);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 177
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 178 char axes_labels[3] = {'x', 'y', 'z'};
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 179 make_json(data, axes, axes_labels, 3);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 180
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 181 return data;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 182 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 183
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 184
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 185 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 186 * @brief Get the Magnetometer reading from LSM303AGR
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 187 * @retval Magnetometer value
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 188 */
akhtar.syedzeeshan@gmail.com 2:ddbdfca82832 189 int32_t *LSM303AGR_JS::get_magnetometer_axes(int32_t *axes){
akhtar.syedzeeshan@gmail.com 2:ddbdfca82832 190 magnetometer->get_m_axes(axes);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 191 printf("LSM303AGR [mag/mgauss]: %6ld, %6ld, %6ld\r\n", axes[0], axes[1], axes[2]);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 192 return axes;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 193 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 194
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 195 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 196 * @brief Get the Magnetometer reading from LSM303AGR
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 197 * @retval Magnetometer value
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 198 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 199 char *LSM303AGR_JS::get_magnetometer_axes_json(char * data){
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 200 int32_t axes[3];
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 201 magnetometer->get_m_axes(axes);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 202 //printf("LSM303AGR [mag/mgauss]: %6ld, %6ld, %6ld\r\n", axes[0], axes[1], axes[2]);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 203
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 204 char axes_labels[3] = {'x', 'y', 'z'};
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 205 make_json(data, axes, axes_labels, 3);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 206
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 207 return data;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 208 }