Javascript wrappers for HTS221 Sensor library
Dependencies: HTS221
HTS221_JS-js.cpp
- Committer:
- akhtar.syedzeeshan@gmail.com
- Date:
- 2017-10-25
- Revision:
- 4:6043b9511072
- Parent:
- 3:df24cbc8aaf0
- Child:
- 5:bbe15d3cac27
File content as of revision 4:6043b9511072:
/** ****************************************************************************** * @file HTS221_JS-js.cpp * @author ST * @version V1.0.0 * @date 9 October 2017 * @brief Implementation of an HTS221 Humidity and Temperature sensor for use * with Javascript. ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "jerryscript-mbed-util/logging.h" #include "jerryscript-mbed-library-registry/wrap_tools.h" // Load the library that we'll wrap #include "HTS221_JS.h" #include "mbed.h" /* Class Implementation ------------------------------------------------------*/ /** * HTS221_JS#destructor * * Called if/when the HTS221_JS is GC'ed. */ void NAME_FOR_CLASS_NATIVE_DESTRUCTOR(HTS221_JS)(void *void_ptr) { delete static_cast<HTS221_JS*>(void_ptr); } /** * Type infomation of the native HTS221_JS pointer * * Set HTS221_JS#destructor as the free callback. */ static const jerry_object_native_info_t native_obj_type_info = { .free_cb = NAME_FOR_CLASS_NATIVE_DESTRUCTOR(HTS221_JS) }; /** * HTS221_JS#get_temperature (native JavaScript method) * * @returns temperature */ DECLARE_CLASS_FUNCTION(HTS221_JS, get_temperature) { CHECK_ARGUMENT_COUNT(HTS221_JS, get_temperature, (args_count == 0)); // Unwrap native HTS221_JS object void *void_ptr; const jerry_object_native_info_t *type_ptr; bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr); if (!has_ptr || type_ptr != &native_obj_type_info) { return jerry_create_error(JERRY_ERROR_TYPE, (const jerry_char_t *) "Failed to get native HTS221_JS pointer"); } HTS221_JS *native_ptr = static_cast<HTS221_JS*>(void_ptr); // Get the result from the C++ API float result = native_ptr->get_temperature(); // Cast it back to JavaScript and return return jerry_create_number(result); } /** * HTS221_JS#get_humidity (native JavaScript method) * * @returns humidity */ DECLARE_CLASS_FUNCTION(HTS221_JS, get_humidity) { CHECK_ARGUMENT_COUNT(HTS221_JS, get_humidity, (args_count == 0)); // Unwrap native HTS221_JS object void *void_ptr; const jerry_object_native_info_t *type_ptr; bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr); if (!has_ptr || type_ptr != &native_obj_type_info) { return jerry_create_error(JERRY_ERROR_TYPE, (const jerry_char_t *) "Failed to get native HTS221_JS pointer"); } HTS221_JS *native_ptr = static_cast<HTS221_JS*>(void_ptr); // Get the result from the C++ API float result = native_ptr->get_humidity(); // Cast it back to JavaScript and return return jerry_create_number(result); } /** * HTS221_JS#led_on (native JavaScript method) * @param pin DigitalOut pin to blink */ DECLARE_CLASS_FUNCTION(HTS221_JS, led_on) { // Check that we have 1 argument, and that it's an object CHECK_ARGUMENT_COUNT(HTS221_JS, led_on, (args_count == 1)); CHECK_ARGUMENT_TYPE_ALWAYS(HTS221_JS, led_on, 0, object); // Unwrap native HTS221_JS object void *void_ptr; const jerry_object_native_info_t *type_ptr; bool has_ptr = jerry_get_object_native_pointer(this_obj, &void_ptr, &type_ptr); if (!has_ptr || type_ptr != &native_obj_type_info) { return jerry_create_error(JERRY_ERROR_TYPE, (const jerry_char_t *) "Failed to get native HTS221_JS pointer"); } HTS221_JS *native_ptr = static_cast<HTS221_JS*>(void_ptr); // Cast the LED argument void *led_void_ptr; const jerry_object_native_info_t *led_type_ptr; bool led_has_ptr = jerry_get_object_native_pointer(args[0], &led_void_ptr, &led_type_ptr); if (!led_has_ptr) { printf("Not a DigitalOut input!"); return jerry_create_error(JERRY_ERROR_TYPE, (const jerry_char_t *) "Failed to get native DigitalOut pointer"); } DigitalOut *pin_ptr = reinterpret_cast<DigitalOut*>(led_void_ptr); // Call the function from the C++ API native_ptr->led_on(*pin_ptr); // Return return jerry_create_undefined(); } /** * HTS221_JS (native JavaScript constructor) * * @returns a JavaScript object representing HTS221_JS. */ DECLARE_CLASS_CONSTRUCTOR(HTS221_JS) { CHECK_ARGUMENT_COUNT(HTS221_JS, __constructor, args_count == 1); CHECK_ARGUMENT_TYPE_ALWAYS(HTS221_JS, __constructor, 0, object); // Extract native DevI2C argument (objects are always pointers) void *devI2c_ptr; const jerry_object_native_info_t *devI2c_type_ptr; bool devI2c_has_ptr = jerry_get_object_native_pointer(args[0], &devI2c_ptr, &devI2c_type_ptr); // Check if we have the devI2c pointer if (!devI2c_has_ptr) { printf("Not a DevI2C input!"); return jerry_create_error(JERRY_ERROR_TYPE, (const jerry_char_t *) "Failed to get native DigitalOut pointer"); } // Cast the argument to C++ DevI2C* devI2c = reinterpret_cast<DevI2C*>(devI2c_ptr); // Extract native HTS221_JS pointer (from this object) HTS221_JS *native_ptr = new HTS221_JS(*devI2c); jerry_value_t js_object = jerry_create_object(); jerry_set_object_native_pointer(js_object, native_ptr, &native_obj_type_info); // attach methods ATTACH_CLASS_FUNCTION(js_object, HTS221_JS, get_temperature); ATTACH_CLASS_FUNCTION(js_object, HTS221_JS, get_humidity); ATTACH_CLASS_FUNCTION(js_object, HTS221_JS, led_on); return js_object; }