Javascript wrappers for HTS221 Sensor library
Dependencies: HTS221
Revision 0:89911ffe212d, committed 2017-10-10
- Comitter:
- akhtar.syedzeeshan@gmail.com
- Date:
- Tue Oct 10 11:51:26 2017 +0200
- Child:
- 1:924fb53eb7f8
- Commit message:
- Initial Commit
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/HTS221.lib Tue Oct 10 11:51:26 2017 +0200 @@ -0,0 +1,1 @@ +https://developer.mbed.org/teams/ST/code/HTS221/#312ee2694a77
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/HTS221_JS-js.cpp Tue Oct 10 11:51:26 2017 +0200
@@ -0,0 +1,209 @@
+/**
+ ******************************************************************************
+ * @file HTS221_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);
+
+ //return jerry_create_string((unsigned char*)"5C");
+}
+
+
+/**
+ * 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);
+
+ //return jerry_create_string((unsigned char*)"5C");
+}
+
+/**
+ * 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);
+
+ if (!devI2c_has_ptr) {
+ printf("Not a I2C input!");
+ return jerry_create_error(JERRY_ERROR_TYPE,
+ (const jerry_char_t *) "Failed to get native DigitalOut pointer");
+ }
+
+ 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;
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/HTS221_JS-js.h Tue Oct 10 11:51:26 2017 +0200
@@ -0,0 +1,58 @@
+/**
+ ******************************************************************************
+ * @file HTS221_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.
+ *
+ ******************************************************************************
+ */
+
+/* Prevent recursive inclusion -----------------------------------------------*/
+
+#ifndef _HTS221_JS_JS_H
+#define _HTS221_JS_JS_H
+
+/* Includes ------------------------------------------------------------------*/
+
+// This file contains all the macros
+#include "jerryscript-mbed-library-registry/wrap_tools.h"
+
+// Class constructor
+DECLARE_CLASS_CONSTRUCTOR(HTS221_JS);
+
+// Define a wrapper, we can load the wrapper in `main.cpp`.
+// This makes it possible to load libraries optionally.
+DECLARE_JS_WRAPPER_REGISTRATION (HTS221_JS_library) {
+ REGISTER_CLASS_CONSTRUCTOR(HTS221_JS);
+}
+
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/HTS221_JS.cpp Tue Oct 10 11:51:26 2017 +0200
@@ -0,0 +1,178 @@
+/**
+ ******************************************************************************
+ * @file HTS221_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 "HTS221_JS.h"
+
+#include <stdlib.h> /* atoi */
+#include "mbed.h"
+
+/* Helper function for printing floats & doubles */
+static char *print_double(char* str, double v, int decimalDigits=2)
+{
+ int i = 1;
+ int intPart, fractPart;
+ int len;
+ char *ptr;
+
+ /* prepare decimal digits multiplicator */
+ for (;decimalDigits!=0; i*=10, decimalDigits--);
+
+ /* calculate integer & fractinal parts */
+ intPart = (int)v;
+ fractPart = (int)((v-(double)(int)v)*i);
+
+ /* fill in integer part */
+ sprintf(str, "%i.", intPart);
+
+ /* prepare fill in of fractional part */
+ len = strlen(str);
+ ptr = &str[len];
+
+ /* fill in leading fractional zeros */
+ for (i/=10;i>1; i/=10, ptr++) {
+ if (fractPart >= i) {
+ break;
+ }
+ *ptr = '0';
+ }
+
+ /* fill in (rest of) fractional part */
+ sprintf(ptr, "%i", fractPart);
+
+ return str;
+}
+
+/* Class Implementation ------------------------------------------------------*/
+
+/** Constructor
+ * @brief Initializing the component.
+ * @param i2c object of an helper class which handles the I2C peripheral
+ */
+HTS221_JS::HTS221_JS(DevI2C &i2c){
+ hum_temp = new HTS221Sensor(&i2c);
+ hum_temp->init(NULL);
+ hum_temp->enable();
+}
+
+/** Destructor
+ * @brief Recycling the component.
+ * Deletes the Sensor Object
+ */
+HTS221_JS::~HTS221_JS(){
+ if(hum_temp != NULL){
+ delete hum_temp;
+ }
+}
+
+/**
+ * @brief Read ID address of HTS221
+ * @retval The ID of the Sensor
+ */
+uint8_t HTS221_JS::readID(){
+ uint8_t result;
+ hum_temp->read_id(&result);
+ return result;
+}
+
+/**
+ * @brief Get the temperature reading from HTS221
+ * @retval Temperature value
+ */
+float HTS221_JS::get_temperature(){
+ float value;
+ hum_temp->get_temperature(&value);
+ return value;
+}
+
+/**
+ * @brief Get the temperature reading from HTS221
+ * @retval Temperature value in string
+ */
+unsigned char *HTS221_JS::get_temperature_string(){
+ float value;
+ char buffer[32];
+
+ hum_temp->get_temperature(&value);
+ print_double(buffer, value);
+ unsigned char *r = new unsigned char[6];
+ for(int i = 0; i < 6; i++){
+ r[i] = buffer[i];
+ }
+ r[5] = '\0';
+ return r;
+}
+
+/**
+ * @brief Get the humidity reading from HTS221
+ * @retval Humidity value
+ */
+float HTS221_JS::get_humidity(){
+ float value;
+ hum_temp->get_humidity(&value);
+ return value;
+}
+
+/**
+ * @brief Get the humidity reading from HTS221
+ * @retval Humidity value in string
+ */
+unsigned char *HTS221_JS::get_humidity_string(){
+ float value;
+ char buffer[32];
+ hum_temp->get_humidity(&value);
+ print_double(buffer, value);
+ unsigned char *r = new unsigned char[6];
+ for(int i = 0; i < 6; i++){
+ r[i] = buffer[i];
+ }
+ r[5] = '\0';
+ return r;
+}
+uint8_t HTS221_JS::give(){
+ return 43;
+}
+
+/* Simple main function */
+void HTS221_JS::print_sensor_info(){
+ uint8_t id;
+ hum_temp->read_id(&id);
+ printf("HTS221 humidity & temperature = 0x%X\r\n", id);
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/HTS221_JS.h Tue Oct 10 11:51:26 2017 +0200
@@ -0,0 +1,84 @@
+/**
+ ******************************************************************************
+ * @file HTS221_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.
+ *
+ ******************************************************************************
+ */
+
+
+/* Prevent recursive inclusion -----------------------------------------------*/
+
+#ifndef __HTS221_JS_H__
+#define __HTS221_JS_H__
+
+/* Includes ------------------------------------------------------------------*/
+
+#include <stdint.h>
+#include "mbed.h"
+#include "HTS221Sensor.h"
+
+/* Class Declaration ---------------------------------------------------------*/
+
+/**
+ * Abstract class of an HTS221 Humidity and Temperature sensor for Javascript.
+ */
+class HTS221_JS {
+private:
+ /* Helper classes. */
+ HTS221Sensor *hum_temp = NULL;
+
+public:
+ /* Constructors */
+ HTS221_JS(){ printf("calling empty constructor"); }
+ HTS221_JS(DevI2C &devI2c);
+
+ /* Destructor */
+ ~HTS221_JS();
+
+ /* Declarations */
+ uint8_t readID();
+ float get_temperature();
+ unsigned char *get_temperature_string();
+ float get_humidity();
+ unsigned char *get_humidity_string();
+ uint8_t give();
+ void print_sensor_info();
+ void led_on(DigitalOut &led) {
+ //printf("led status: %d\n", led);
+ led = 1;
+ //led = !led;
+ }
+};
+
+#endif
\ No newline at end of file