ST Expansion SW Team / HTS221_JS

Javascript wrappers for HTS221 Sensor library

Dependencies:   HTS221

Dependents:   ST_SENSOR_JS

HTS221_JS-js.cpp@3:df24cbc8aaf0, 2017-10-23 (annotated)

Committer:
akhtar.syedzeeshan@gmail.com
Date:
Mon Oct 23 16:38:37 2017 +0200
Revision:
3:df24cbc8aaf0
Parent:
2:c8589b137d5a
Child:
4:6043b9511072
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 0:89911ffe212d 1 /**
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 2 ******************************************************************************
akhtar.syedzeeshan@gmail.com 2:c8589b137d5a 3 * @file HTS221_JS-js.cpp
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 4 * @author ST
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 5 * @version V1.0.0
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 6 * @date 9 October 2017
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 7 * @brief Implementation of an HTS221 Humidity and Temperature sensor for use
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 8 * with Javascript.
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 9 ******************************************************************************
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 10 * @attention
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 11 *
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 12 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 13 *
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 14 * Redistribution and use in source and binary forms, with or without modification,
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 15 * are permitted provided that the following conditions are met:
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 16 * 1. Redistributions of source code must retain the above copyright notice,
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 17 * this list of conditions and the following disclaimer.
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 19 * this list of conditions and the following disclaimer in the documentation
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 20 * and/or other materials provided with the distribution.
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 21 * 3. Neither the name of STMicroelectronics nor the names of its contributors
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 22 * may be used to endorse or promote products derived from this software
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 23 * without specific prior written permission.
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 24 *
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 28 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 35 *
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 36 ******************************************************************************
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 37 */
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 38
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 39
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 40 /* Includes ------------------------------------------------------------------*/
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 41
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 42 #include "jerryscript-mbed-util/logging.h"
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 43 #include "jerryscript-mbed-library-registry/wrap_tools.h"
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 44
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 45 // Load the library that we'll wrap
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 46 #include "HTS221_JS.h"
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 47
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 48 #include "mbed.h"
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 49
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 50 /* Class Implementation ------------------------------------------------------*/
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 51
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 52 /**
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 53 * HTS221_JS#destructor
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 54 *
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 55 * Called if/when the HTS221_JS is GC'ed.
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 56 */
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 57 void NAME_FOR_CLASS_NATIVE_DESTRUCTOR(HTS221_JS)(void *void_ptr) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 58 delete static_cast<HTS221_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 59 }
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 60
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 61 /**
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 62 * Type infomation of the native HTS221_JS pointer
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 63 *
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 64 * Set HTS221_JS#destructor as the free callback.
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 65 */
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 66 static const jerry_object_native_info_t native_obj_type_info = {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 67 .free_cb = NAME_FOR_CLASS_NATIVE_DESTRUCTOR(HTS221_JS)
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 68 };
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 69
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 70
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 71 /**
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 72 * HTS221_JS#get_temperature (native JavaScript method)
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 73 *
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 74 * @returns temperature
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 75 */
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 76 DECLARE_CLASS_FUNCTION(HTS221_JS, get_temperature) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 77 CHECK_ARGUMENT_COUNT(HTS221_JS, get_temperature, (args_count == 0));
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 78
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 79
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 80 // Unwrap native HTS221_JS object
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 81 void *void_ptr;
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 82 const jerry_object_native_info_t *type_ptr;
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 83 bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 84
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 85 if (!has_ptr || type_ptr != &native_obj_type_info) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 86 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 87 (const jerry_char_t *) "Failed to get native HTS221_JS pointer");
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 88 }
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 89
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 90 HTS221_JS *native_ptr = static_cast<HTS221_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 91
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 92 // Get the result from the C++ API
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 93 float result = native_ptr->get_temperature();
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 94
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 95 // Cast it back to JavaScript and return
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 96 return jerry_create_number(result);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 97
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 98 }
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 99
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 100
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 101 /**
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 102 * HTS221_JS#get_humidity (native JavaScript method)
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 103 *
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 104 * @returns humidity
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 105 */
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 106 DECLARE_CLASS_FUNCTION(HTS221_JS, get_humidity) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 107 CHECK_ARGUMENT_COUNT(HTS221_JS, get_humidity, (args_count == 0));
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 108
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 109
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 110 // Unwrap native HTS221_JS object
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 111 void *void_ptr;
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 112 const jerry_object_native_info_t *type_ptr;
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 113 bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 114
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 115 if (!has_ptr || type_ptr != &native_obj_type_info) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 116 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 117 (const jerry_char_t *) "Failed to get native HTS221_JS pointer");
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 118 }
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 119
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 120 HTS221_JS *native_ptr = static_cast<HTS221_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 121
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 122 // Get the result from the C++ API
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 123 float result = native_ptr->get_humidity();
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 124
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 125 // Cast it back to JavaScript and return
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 126 return jerry_create_number(result);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 127
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 128 }
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 129
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 130 /**
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 131 * HTS221_JS#led_on (native JavaScript method)
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 132 * @param pin DigitalOut pin to blink
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 133 */
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 134 DECLARE_CLASS_FUNCTION(HTS221_JS, led_on) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 135 // Check that we have 1 argument, and that it's an object
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 136 CHECK_ARGUMENT_COUNT(HTS221_JS, led_on, (args_count == 1));
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 137 CHECK_ARGUMENT_TYPE_ALWAYS(HTS221_JS, led_on, 0, object);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 138
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 139 // Unwrap native HTS221_JS object
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 140 void *void_ptr;
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 141 const jerry_object_native_info_t *type_ptr;
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 142 bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 143
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 144 if (!has_ptr || type_ptr != &native_obj_type_info) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 145 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 146 (const jerry_char_t *) "Failed to get native HTS221_JS pointer");
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 147 }
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 148
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 149 HTS221_JS *native_ptr = static_cast<HTS221_JS*>(void_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 150
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 151
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 152 // Cast the LED argument
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 153 void *led_void_ptr;
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 154 const jerry_object_native_info_t *led_type_ptr;
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 155 bool led_has_ptr = jerry_get_object_native_pointer(args[0], &led_void_ptr, &led_type_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 156
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 157 if (!led_has_ptr) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 158 printf("Not a DigitalOut input!");
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 159 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 160 (const jerry_char_t *) "Failed to get native DigitalOut pointer");
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 161 }
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 162
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 163 DigitalOut *pin_ptr = reinterpret_cast<DigitalOut*>(led_void_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 164
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 165 // Call the function from the C++ API
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 166 native_ptr->led_on(*pin_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 167
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 168 // Return
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 169 return jerry_create_undefined();
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 170 }
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 171
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 172 /**
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 173 * HTS221_JS (native JavaScript constructor)
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 174 *
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 175 * @returns a JavaScript object representing HTS221_JS.
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 176 */
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 177 DECLARE_CLASS_CONSTRUCTOR(HTS221_JS) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 178 CHECK_ARGUMENT_COUNT(HTS221_JS, __constructor, args_count == 1);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 179 CHECK_ARGUMENT_TYPE_ALWAYS(HTS221_JS, __constructor, 0, object);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 180
akhtar.syedzeeshan@gmail.com 3:df24cbc8aaf0 181 // Extract native I2C argument (objects are always pointers)
akhtar.syedzeeshan@gmail.com 3:df24cbc8aaf0 182 void *i2c_ptr;
akhtar.syedzeeshan@gmail.com 3:df24cbc8aaf0 183 const jerry_object_native_info_t *i2c_type_ptr;
akhtar.syedzeeshan@gmail.com 3:df24cbc8aaf0 184 bool i2c_has_ptr = jerry_get_object_native_pointer(args[0], &i2c_ptr, &i2c_type_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 185
akhtar.syedzeeshan@gmail.com 1:924fb53eb7f8 186 // Check if we have the i2c pointer
akhtar.syedzeeshan@gmail.com 3:df24cbc8aaf0 187 if (!i2c_has_ptr) {
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 188 printf("Not a I2C input!");
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 189 return jerry_create_error(JERRY_ERROR_TYPE,
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 190 (const jerry_char_t *) "Failed to get native DigitalOut pointer");
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 191 }
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 192
akhtar.syedzeeshan@gmail.com 1:924fb53eb7f8 193 // Cast the argument to C++
akhtar.syedzeeshan@gmail.com 3:df24cbc8aaf0 194 I2C* i2c = reinterpret_cast<I2C*>(i2c_ptr);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 195
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 196 // Extract native HTS221_JS pointer (from this object)
akhtar.syedzeeshan@gmail.com 3:df24cbc8aaf0 197 HTS221_JS *native_ptr = new HTS221_JS(*i2c);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 198
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 199 jerry_value_t js_object = jerry_create_object();
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 200 jerry_set_object_native_pointer(js_object, native_ptr, &native_obj_type_info);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 201
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 202 // attach methods
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 203 ATTACH_CLASS_FUNCTION(js_object, HTS221_JS, get_temperature);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 204 ATTACH_CLASS_FUNCTION(js_object, HTS221_JS, get_humidity);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 205 ATTACH_CLASS_FUNCTION(js_object, HTS221_JS, led_on);
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 206
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 207 return js_object;
akhtar.syedzeeshan@gmail.com 0:89911ffe212d 208 }