ST Expansion SW Team / LPS22HB_JS

Javascript wrappers for LPS22HB Sensor library

Dependencies:   LPS22HB

Dependents:   ST_SENSOR_JS

LPS22HB_JS-js.cpp@3:3e19d8808491, 2017-10-23 (annotated)

Committer:
akhtar.syedzeeshan@gmail.com
Date:
Mon Oct 23 16:40:42 2017 +0200
Revision:
3:3e19d8808491
Parent:
2:5ed6416b6b4d
Child:
4:c2cf5deba40f
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:c256bbccd0d4 1 /**
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 2 ******************************************************************************
akhtar.syedzeeshan@gmail.com 2:5ed6416b6b4d 3 * @file LPS22HB_JS-js.cpp
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 4 * @author ST
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 5 * @version V1.0.0
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 6 * @date 9 October 2017
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 7 * @brief Implementation of an LPS22HB Pressure and Temperature sensor for use
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 8 * with Javascript.
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 9 ******************************************************************************
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 10 * @attention
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 11 *
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 12 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 13 *
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 14 * Redistribution and use in source and binary forms, with or without modification,
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 15 * are permitted provided that the following conditions are met:
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 16 * 1. Redistributions of source code must retain the above copyright notice,
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 17 * this list of conditions and the following disclaimer.
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 19 * this list of conditions and the following disclaimer in the documentation
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 20 * and/or other materials provided with the distribution.
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 21 * 3. Neither the name of STMicroelectronics nor the names of its contributors
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 22 * may be used to endorse or promote products derived from this software
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 23 * without specific prior written permission.
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 24 *
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 28 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 35 *
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 36 ******************************************************************************
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 37 */
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 38
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 39
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 40 /* Includes ------------------------------------------------------------------*/
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 41
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 42 #include "jerryscript-mbed-util/logging.h"
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 43 #include "jerryscript-mbed-library-registry/wrap_tools.h"
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 44
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 45 // Load the library that we'll wrap
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 46 #include "LPS22HB_JS.h"
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 47
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 48 #include "mbed.h"
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 49
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 50 /* Class Implementation ------------------------------------------------------*/
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 51
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 52 /**
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 53 * LPS22HB_JS#destructor
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 54 *
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 55 * Called if/when the LPS22HB_JS is GC'ed.
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 56 */
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 57 void NAME_FOR_CLASS_NATIVE_DESTRUCTOR(LPS22HB_JS)(void *void_ptr) {
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 58 delete static_cast<LPS22HB_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 59 }
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 60
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 61
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 62 /**
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 63 * Type infomation of the native LPS22HB_JS pointer
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 64 *
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 65 * Set LPS22HB_JS#destructor as the free callback.
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 66 */
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 67 static const jerry_object_native_info_t native_obj_type_info = {
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 68 .free_cb = NAME_FOR_CLASS_NATIVE_DESTRUCTOR(LPS22HB_JS)
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 69 };
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 70
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 71
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 72 /**
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 73 * LPS22HB_JS#get_temperature (native JavaScript method)
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 74 *
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 75 * @returns temperature
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 76 */
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 77 DECLARE_CLASS_FUNCTION(LPS22HB_JS, get_temperature) {
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 78 CHECK_ARGUMENT_COUNT(LPS22HB_JS, get_temperature, (args_count == 0));
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 79
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 80
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 81 // Unwrap native LPS22HB_JS object
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 82 void *void_ptr;
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 83 const jerry_object_native_info_t *type_ptr;
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 84 bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 85
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 86 if (!has_ptr || type_ptr != &native_obj_type_info) {
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 87 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 88 (const jerry_char_t *) "Failed to get native LPS22HB_JS pointer");
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 89 }
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 90
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 91 LPS22HB_JS *native_ptr = static_cast<LPS22HB_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 92
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 93 // Get the result from the C++ API
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 94 float result = native_ptr->get_temperature();
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 95
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 96 // Cast it back to JavaScript and return
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 97 return jerry_create_number(result);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 98 }
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 99
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 100
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 101 /**
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 102 * LPS22HB_JS#get_pressure (native JavaScript method)
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 103 *
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 104 * @returns pressure
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 105 */
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 106 DECLARE_CLASS_FUNCTION(LPS22HB_JS, get_pressure) {
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 107 CHECK_ARGUMENT_COUNT(LPS22HB_JS, get_pressure, (args_count == 0));
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 108
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 109
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 110 // Unwrap native LPS22HB_JS object
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 111 void *void_ptr;
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 112 const jerry_object_native_info_t *type_ptr;
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 113 bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 114
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 115 if (!has_ptr || type_ptr != &native_obj_type_info) {
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 116 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 117 (const jerry_char_t *) "Failed to get native LPS22HB_JS pointer");
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 118 }
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 119
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 120 LPS22HB_JS *native_ptr = static_cast<LPS22HB_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 121
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 122 // Get the result from the C++ API
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 123 float result = native_ptr->get_pressure();
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 124
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 125 // Cast it back to JavaScript and return
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 126 return jerry_create_number(result);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 127 }
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 128
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 129 /**
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 130 * LPS22HB_JS (native JavaScript constructor)
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 131 *
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 132 * @returns a JavaScript object representing LPS22HB_JS.
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 133 */
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 134 DECLARE_CLASS_CONSTRUCTOR(LPS22HB_JS) {
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 135 CHECK_ARGUMENT_COUNT(LPS22HB_JS, __constructor, args_count == 1);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 136 CHECK_ARGUMENT_TYPE_ALWAYS(LPS22HB_JS, __constructor, 0, object);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 137
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 138 // Unwrap native LPS22HB_JS object
akhtar.syedzeeshan@gmail.com 3:3e19d8808491 139 void *i2c_ptr;
akhtar.syedzeeshan@gmail.com 3:3e19d8808491 140 const jerry_object_native_info_t *i2c_type_ptr;
akhtar.syedzeeshan@gmail.com 3:3e19d8808491 141 bool i2c_has_ptr = jerry_get_object_native_pointer(args[0], &i2c_ptr, &i2c_type_ptr);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 142
akhtar.syedzeeshan@gmail.com 1:6b7b798e36ae 143 // Check if we have the i2c pointer
akhtar.syedzeeshan@gmail.com 3:3e19d8808491 144 if (!i2c_has_ptr) {
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 145 printf("Not a I2C input!");
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 146 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 147 (const jerry_char_t *) "Failed to get native DigitalOut pointer");
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 148 }
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 149
akhtar.syedzeeshan@gmail.com 1:6b7b798e36ae 150 // Cast the argument to C++
akhtar.syedzeeshan@gmail.com 3:3e19d8808491 151 I2C* i2c = reinterpret_cast<I2C*>(i2c_ptr);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 152
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 153 // Extract native LPS22HB_JS pointer (from this object)
akhtar.syedzeeshan@gmail.com 3:3e19d8808491 154 LPS22HB_JS *native_ptr = new LPS22HB_JS(*i2c);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 155
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 156 jerry_value_t js_object = jerry_create_object();
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 157 jerry_set_object_native_pointer(js_object, native_ptr, &native_obj_type_info);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 158
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 159 // attach methods
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 160 ATTACH_CLASS_FUNCTION(js_object, LPS22HB_JS, get_temperature);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 161 ATTACH_CLASS_FUNCTION(js_object, LPS22HB_JS, get_pressure);
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 162
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 163 return js_object;
akhtar.syedzeeshan@gmail.com 0:c256bbccd0d4 164 }