LightResource.h

00001 /**
00002  * @file    LightResource.h
00003  * @brief   mbed CoAP Endpoint Light resource supporting CoAP GET and PUT
00004  * @author  Doug Anson, Michael Koster
00005  * @version 1.0
00006  * @see
00007  *
00008  * Copyright (c) 2014
00009  *
00010  * Licensed under the Apache License, Version 2.0 (the "License");
00011  * you may not use this file except in compliance with the License.
00012  * You may obtain a copy of the License at
00013  *
00014  *     http://www.apache.org/licenses/LICENSE-2.0
00015  *
00016  * Unless required by applicable law or agreed to in writing, software
00017  * distributed under the License is distributed on an "AS IS" BASIS,
00018  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00019  * See the License for the specific language governing permissions and
00020  * limitations under the License.
00021  */
00022 
00023 #ifndef __LIGHT_RESOURCE_H__
00024 #define __LIGHT_RESOURCE_H__
00025 
00026 
00027 // Base class
00028 #include "DynamicResource.h"
00029 
00030 // our Light
00031 #include "ChainableLED.h"
00032 #define LED_COUNT 1
00033 
00034 ChainableLED led_chain(D4, D5, LED_COUNT);
00035 
00036 static char * led_value = {"0000000"}; //RRGGBBII
00037 
00038 void set_led_array(char * color_string)
00039 {
00040     static uint8_t red, green, blue, index;
00041     int color_int;
00042 
00043     sscanf(color_string, "%X", &color_int);
00044     
00045     index = color_int & 255;
00046     blue = color_int >> 8 & 255;
00047     green = color_int >> 16 & 255;
00048     red = color_int >> 24 & 255;
00049         
00050     if(index > 0 and index <= LED_COUNT) {
00051         led_chain.setColorRGB(index-1, red, green, blue);    
00052     }
00053     else if(index == 0){
00054         for(int i = 0; i < LED_COUNT; i++){
00055             led_chain.setColorRGB(i, red, green, blue);    
00056         }
00057     }    
00058 }
00059 
00060 /** LightResource class
00061  */
00062 class LightResource : public DynamicResource
00063 {
00064 
00065 public:
00066     /**
00067     Default constructor
00068     @param logger input logger instance for this resource
00069     @param name input the Light resource name
00070     @param observable input the resource is Observable (default: FALSE)
00071     */
00072     LightResource(const Logger *logger,const char *name,const bool observable = false) : DynamicResource(logger,name,"Light",SN_GRS_GET_ALLOWED|SN_GRS_PUT_ALLOWED,observable) {
00073     set_led_array("00000000");
00074     wait(0.5);
00075     set_led_array("FF000000");
00076     wait(0.5);
00077     set_led_array("00FF0000");
00078     wait(0.5);
00079     set_led_array("0000FF00");
00080     wait(0.5);
00081     set_led_array(led_value);
00082     }
00083 
00084     /**
00085     Get the value of the Light
00086     @returns string containing either "0" (light off) or "1" (light on)
00087     */
00088     virtual string get() {
00089         return(led_value);
00090     }
00091 
00092     /**
00093     Set the value of the Light
00094     @param string input the string containing "0" (light off) or "1" (light on)
00095     */
00096     virtual void put(const string value) {
00097         if( sizeof(value) == sizeof(led_value) ){
00098             led_value = (char *)value.c_str();
00099             set_led_array(led_value);
00100         }
00101     }
00102 };
00103 
00104 #endif // __LIGHT_RESOURCE_H__