ST Expansion SW Team / LSM303AGR_JS

Javascript wrappers for LSM303AGR Sensor library

Dependencies:   LSM303AGR

Dependents:   ST_SENSOR_JS

LSM303AGR_JS-js.cpp@1:78c55e099d6c, 2017-10-23 (annotated)

Committer:
akhtar.syedzeeshan@gmail.com
Date:
Mon Oct 23 16:41:41 2017 +0200
Revision:
1:78c55e099d6c
Parent:
0:23a17bd32990
Child:
2:ddbdfca82832
Changed DevI2C to I2C in javascript. Currently casting I2C to DevI2C while using the driver

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-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 "jerryscript-mbed-util/logging.h"
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 43 #include "jerryscript-mbed-library-registry/wrap_tools.h"
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 44
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 45 // Load the library that we'll wrap
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 46 #include "LSM303AGR_JS.h"
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 47
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 48 #include "mbed.h"
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 49
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 50 /* Class Implementation ------------------------------------------------------*/
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 51
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 52 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 53 * LSM303AGR_JS#destructor
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 54 *
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 55 * Called if/when the LSM303AGR_JS is GC'ed.
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 56 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 57 void NAME_FOR_CLASS_NATIVE_DESTRUCTOR(LSM303AGR_JS)(void *void_ptr) {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 58 delete static_cast<LSM303AGR_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 59 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 60
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 61
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 62 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 63 * Type infomation of the native LSM303AGR_JS pointer
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 64 *
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 65 * Set LSM303AGR_JS#destructor as the free callback.
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 66 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 67 static const jerry_object_native_info_t native_obj_type_info = {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 68 .free_cb = NAME_FOR_CLASS_NATIVE_DESTRUCTOR(LSM303AGR_JS)
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 69 };
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 70
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 71
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 72 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 73 * LSM303AGR_JS#get_accelerometer_axes (native JavaScript method)
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 74 *
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 75 * @returns accelerometer axes
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 76 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 77 DECLARE_CLASS_FUNCTION(LSM303AGR_JS, get_accelerometer_axes) {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 78 CHECK_ARGUMENT_COUNT(LSM303AGR_JS, get_accelerometer_axes, (args_count == 0));
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 79
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 80
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 81 // Unwrap native LSM303AGR_JS object
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 82 void *void_ptr;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 83 const jerry_object_native_info_t *type_ptr;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 84 bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 85
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 86 if (!has_ptr || type_ptr != &native_obj_type_info) {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 87 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 88 (const jerry_char_t *) "Failed to get native LSM303AGR_JS pointer");
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 89 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 90
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 91 LSM303AGR_JS *native_ptr = static_cast<LSM303AGR_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 92
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 93 // Get the result from the C++ API
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 94 char *result = new char[128];
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 95 native_ptr->get_accelerometer_axes_json(result);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 96
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 97 // Cast it back to JavaScript
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 98 jerry_value_t out = jerry_create_string((unsigned char *)result);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 99
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 100 // Recycle the result from function
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 101 delete result;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 102
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 103 // Return the output
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 104 return out;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 105 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 106
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 107
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 108 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 109 * LSM303AGR_JS#get_magnetometer_axes (native JavaScript method)
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 110 *
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 111 * @returns Magnetometer axes
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 112 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 113 DECLARE_CLASS_FUNCTION(LSM303AGR_JS, get_magnetometer_axes) {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 114 CHECK_ARGUMENT_COUNT(LSM303AGR_JS, get_magnetometer_axes, (args_count == 0));
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 115
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 116
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 117 // Unwrap native LSM303AGR_JS object
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 118 void *void_ptr;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 119 const jerry_object_native_info_t *type_ptr;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 120 bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 121
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 122 if (!has_ptr || type_ptr != &native_obj_type_info) {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 123 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 124 (const jerry_char_t *) "Failed to get native LSM303AGR_JS pointer");
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 125 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 126
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 127 LSM303AGR_JS *native_ptr = static_cast<LSM303AGR_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 128
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 129 // Get the result from the C++ API
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 130 char *result = new char[128];
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 131 native_ptr->get_magnetometer_axes_json(result);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 132
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 133 // Cast it back to JavaScript
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 134 jerry_value_t out = jerry_create_string((unsigned char *)result);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 135
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 136 // Recycle the result from function
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 137 delete result;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 138
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 139 // Return the output
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 140 return out;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 141 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 142
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 143 /**
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 144 * LSM303AGR_JS (native JavaScript constructor)
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 145 *
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 146 * @returns a JavaScript object representing LSM303AGR_JS.
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 147 */
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 148 DECLARE_CLASS_CONSTRUCTOR(LSM303AGR_JS) {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 149 CHECK_ARGUMENT_COUNT(LSM303AGR_JS, __constructor, args_count == 1);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 150 CHECK_ARGUMENT_TYPE_ALWAYS(LSM303AGR_JS, __constructor, 0, object);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 151
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 152 // Unwrap native LSM303AGR_JS object
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 153 void *i2c_ptr;
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 154 const jerry_object_native_info_t *i2c_type_ptr;
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 155 bool i2c_has_ptr = jerry_get_object_native_pointer(args[0], &i2c_ptr, &i2c_type_ptr);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 156
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 157 // Check if we have the i2c pointer
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 158 if (!i2c_has_ptr) {
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 159 printf("Not a I2C input!");
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 160 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 161 (const jerry_char_t *) "Failed to get native DigitalOut pointer");
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 162 }
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 163
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 164 // Cast the argument to C++
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 165 I2C* i2c = reinterpret_cast<I2C*>(i2c_ptr);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 166
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 167 // Extract native LSM303AGR_JS pointer (from this object)
akhtar.syedzeeshan@gmail.com 1:78c55e099d6c 168 LSM303AGR_JS *native_ptr = new LSM303AGR_JS(*i2c);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 169
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 170 jerry_value_t js_object = jerry_create_object();
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 171 jerry_set_object_native_pointer(js_object, native_ptr, &native_obj_type_info);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 172
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 173 // attach methods
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 174 ATTACH_CLASS_FUNCTION(js_object, LSM303AGR_JS, get_accelerometer_axes);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 175 ATTACH_CLASS_FUNCTION(js_object, LSM303AGR_JS, get_magnetometer_axes);
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 176
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 177 return js_object;
akhtar.syedzeeshan@gmail.com 0:23a17bd32990 178 }