Javascript wrappers for LPS22HB Sensor library
Dependencies: LPS22HB
LPS22HB_JS-js.cpp
- Committer:
- akhtar.syedzeeshan@gmail.com
- Date:
- 2018-01-17
- Revision:
- 6:a480866ede7e
- Parent:
- 5:e92dbbec30d7
File content as of revision 6:a480866ede7e:
/** ****************************************************************************** * @file LPS22HB_JS-js.cpp * @author ST * @version V1.0.0 * @date 9 October 2017 * @brief Implementation of an LPS22HB Pressure and Temperature sensor for use * with Javascript. ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2017 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 "LPS22HB_JS.h" #include "mbed.h" #ifdef TARGET_SENSOR_TILE mbed::Serial pc2((PinName)0x2C, (PinName)0x32); #define printf(...) pc2.printf(__VA_ARGS__) #endif /* Class Implementation ------------------------------------------------------*/ /** * LPS22HB_JS#destructor * Called if/when the LPS22HB_JS is GC'ed. */ void NAME_FOR_CLASS_NATIVE_DESTRUCTOR(LPS22HB_JS)(void *void_ptr) { delete static_cast<LPS22HB_JS*>(void_ptr); } /** * Type infomation of the native LPS22HB_JS pointer * Sets LPS22HB_JS#destructor as the free callback. */ static const jerry_object_native_info_t native_obj_type_info = { .free_cb = NAME_FOR_CLASS_NATIVE_DESTRUCTOR(LPS22HB_JS) }; /** * LPS22HB_JS#init_spi (native JavaScript method) * @brief Initializes the sensor using SPI interface * @param SPI object of helper class which handles the SPI peripheral * @param CS pin * @param INT pin * @param SPI type */ DECLARE_CLASS_FUNCTION(LPS22HB_JS, init_spi) { CHECK_ARGUMENT_COUNT(LPS22HB_JS, init_spi, (args_count == 2 || args_count == 4)); CHECK_ARGUMENT_TYPE_ALWAYS(LPS22HB_JS, init_spi, 0, object); CHECK_ARGUMENT_TYPE_ALWAYS(LPS22HB_JS, init_spi, 1, number); CHECK_ARGUMENT_TYPE_ON_CONDITION(LPS22HB_JS, init_spi, 2, number, args_count == 4); CHECK_ARGUMENT_TYPE_ON_CONDITION(LPS22HB_JS, init_spi, 3, number, args_count == 4); // Unwrap native LPS22HB_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 LPS22HB_JS pointer"); } LPS22HB_JS *native_ptr = static_cast<LPS22HB_JS*>(void_ptr); // Unwrap arguments void *spi_ptr; const jerry_object_native_info_t *spi_type_ptr; bool spi_has_ptr = jerry_get_object_native_pointer(args[0], &spi_ptr, &spi_type_ptr); // Check if we have the spi pointer if (!spi_has_ptr) { printf("Not a SPI input!"); return jerry_create_error(JERRY_ERROR_TYPE, (const jerry_char_t *) "Failed to get native DigitalOut pointer"); } // Cast the argument to C++ SPI* spi = reinterpret_cast<SPI*>(spi_ptr); int cs_pin = jerry_get_number_value(args[1]); // Call the native function if(args_count == 2){ native_ptr->init(*spi, (PinName)cs_pin); } else if(args_count == 4){ int int_pin = jerry_get_number_value(args[2]); int spi_type = jerry_get_number_value(args[3]); /* To read string jerry_size_t req_sz = jerry_get_string_size(args[3]); jerry_char_t spi_type[req_sz]; jerry_string_to_char_buffer(args[3], spi_type, req_sz); */ native_ptr->init(*spi, (PinName)cs_pin, (PinName)int_pin, spi_type); } return jerry_create_number(0); } /** * LPS22HB_JS#init_i2c (native JavaScript method) * @brief Initializes the sensor using I2C interface * @param DevI2c object of helper class which handles the DevI2C peripheral * @param Address * @param INT pin */ DECLARE_CLASS_FUNCTION(LPS22HB_JS, init_i2c) { CHECK_ARGUMENT_COUNT(LPS22HB_JS, init_i2c, (args_count == 1 || args_count == 3)); CHECK_ARGUMENT_TYPE_ALWAYS(LPS22HB_JS, init_i2c, 0, object); CHECK_ARGUMENT_TYPE_ON_CONDITION(LPS22HB_JS, init_i2c, 1, number, args_count == 3); CHECK_ARGUMENT_TYPE_ON_CONDITION(LPS22HB_JS, init_i2c, 2, number, args_count == 3); // Unwrap native LPS22HB_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 LPS22HB_JS pointer"); } LPS22HB_JS *native_ptr = static_cast<LPS22HB_JS*>(void_ptr); // Unwrap arguments void *i2c_ptr; const jerry_object_native_info_t *i2c_type_ptr; bool i2c_has_ptr = jerry_get_object_native_pointer(args[0], &i2c_ptr, &i2c_type_ptr); // Check if we have the i2c pointer if (!i2c_has_ptr) { printf("Not a I2C input!"); return jerry_create_error(JERRY_ERROR_TYPE, (const jerry_char_t *) "Failed to get native DigitalOut pointer"); } // Cast the argument to C++ DevI2C* i2c = reinterpret_cast<DevI2C*>(i2c_ptr); // Call the native function if(args_count == 1){ native_ptr->init(*i2c); } else if(args_count == 3){ int address = jerry_get_number_value(args[1]); int int_pin = jerry_get_number_value(args[2]); native_ptr->init(*i2c, (uint8_t) address, (PinName) int_pin); } return jerry_create_number(0); } /** * LPS22HB_JS#get_temperature (native JavaScript method) * @brief Gets the temperature reading * @returns Temperature */ DECLARE_CLASS_FUNCTION(LPS22HB_JS, get_temperature) { CHECK_ARGUMENT_COUNT(LPS22HB_JS, get_temperature, (args_count == 0)); // Unwrap native LPS22HB_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 LPS22HB_JS pointer"); } LPS22HB_JS *native_ptr = static_cast<LPS22HB_JS*>(void_ptr); // Get the result from the C++ API //float result = native_ptr->get_temperature(); char * result = new char[128]; result = native_ptr->get_temperature_string(result); //pc.printf("Temperature: %s", result); // Cast it back to JavaScript jerry_value_t out = jerry_create_string((unsigned char *)result); //printf("temp: %s\n", result); // Recycle the result from function delete result; // Return the output return out; } /** * LPS22HB_JS#get_temperature_string (native JavaScript method) * @brief Gets temperature reading in string form * @returns Temperature in string */ DECLARE_CLASS_FUNCTION(LPS22HB_JS, get_temperature_string) { CHECK_ARGUMENT_COUNT(LPS22HB_JS, get_temperature_string, (args_count == 0)); // Unwrap native LPS22HB_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 LPS22HB_JS pointer"); } LPS22HB_JS *native_ptr = static_cast<LPS22HB_JS*>(void_ptr); // Get the result from the C++ API char * result = new char[128]; result = native_ptr->get_temperature_string(result); //pc.printf("Temperature: %s", result); // Cast it back to JavaScript jerry_value_t out = jerry_create_string((unsigned char *)result); //printf("temp: %s\n", result); // Recycle the result from function delete result; // Return the output return out; } /** * LPS22HB_JS#get_pressure (native JavaScript method) * @brief Gets the pressure reading * @returns Pressure */ DECLARE_CLASS_FUNCTION(LPS22HB_JS, get_pressure) { CHECK_ARGUMENT_COUNT(LPS22HB_JS, get_pressure, (args_count == 0)); // Unwrap native LPS22HB_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 LPS22HB_JS pointer"); } LPS22HB_JS *native_ptr = static_cast<LPS22HB_JS*>(void_ptr); // Get the result from the C++ API float result = native_ptr->get_pressure(); //printf("pressure: %f\n", result); // Cast it back to JavaScript and return return jerry_create_number(result); } /** * LPS22HB_JS#get_pressure_string (native JavaScript method) * @brief Gets the pressure reading in string form * @returns Pressure */ DECLARE_CLASS_FUNCTION(LPS22HB_JS, get_pressure_string) { CHECK_ARGUMENT_COUNT(LPS22HB_JS, get_pressure_string, (args_count == 0)); // Unwrap native LPS22HB_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 LPS22HB_JS pointer"); } LPS22HB_JS *native_ptr = static_cast<LPS22HB_JS*>(void_ptr); char * result = new char[128]; result = native_ptr->get_pressure_string(result); // Cast it back to JavaScript jerry_value_t out = jerry_create_string((unsigned char *)result); //printf("pressure: %s\n", result); // Recycle the result from function delete result; // Return the output return out; } /** * LPS22HB_JS (native JavaScript constructor) * @brief Constructor for Javascript wrapper * @returns a JavaScript object representing LPS22HB_JS. */ DECLARE_CLASS_CONSTRUCTOR(LPS22HB_JS) { CHECK_ARGUMENT_COUNT(LPS22HB_JS, __constructor, args_count == 0); //pc.printf("constructor called!\n"); // Extract native LPS22HB_JS pointer (from this object) LPS22HB_JS *native_ptr = new LPS22HB_JS(); 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, LPS22HB_JS, init_spi); ATTACH_CLASS_FUNCTION(js_object, LPS22HB_JS, init_i2c); ATTACH_CLASS_FUNCTION(js_object, LPS22HB_JS, get_temperature); ATTACH_CLASS_FUNCTION(js_object, LPS22HB_JS, get_temperature_string); ATTACH_CLASS_FUNCTION(js_object, LPS22HB_JS, get_pressure); ATTACH_CLASS_FUNCTION(js_object, LPS22HB_JS, get_pressure_string); return js_object; }