PayloadDef.cpp

00001 /** IoT Gateway RFM12B payload format handling
00002  *
00003  * @author Andrew Lindsay
00004  *
00005  * @section LICENSE
00006  *
00007  * Copyright (c) 2012 Andrew Lindsay (andrew [at] thiseldo [dot] co [dot] uk)
00008  *
00009  * Permission is hereby granted, free of charge, to any person obtaining a copy
00010  * of this software and associated documentation files (the "Software"), to deal
00011  * in the Software without restriction, including without limitation the rights
00012  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00013  * copies of the Software, and to permit persons to whom the Software is
00014  * furnished to do so, subject to the following conditions:
00015 
00016  * The above copyright notice and this permission notice shall be included in
00017  * all copies or substantial portions of the Software.
00018  * 
00019  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00020  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00021  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00022  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00023  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00024  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00025  * THE SOFTWARE.
00026  * 
00027  * @section DESCRIPTION
00028  * 
00029  * 
00030  */
00031 
00032 #include "mbed.h"
00033 #include "PayloadDef.h"
00034 
00035 
00036 // Constructor for a new payload
00037 PayloadDef::PayloadDef( ) { }
00038 
00039 PayloadDef::PayloadDef( uint8_t *pptr, short plen ) {
00040     short index = 0;
00041     uint8_t *bufPtr = payloadBuffer;
00042     while( index < plen && index < MAX_PAYLOAD_SIZE ) {
00043         *bufPtr++ = *pptr++;
00044         index++;
00045     }
00046     payloadLen = plen;
00047     readingCount = 0;
00048 }
00049 
00050 uint8_t PayloadDef::nodeId() {
00051     return( payloadBuffer[1] & 0x1F );
00052 }
00053     
00054 uint8_t PayloadDef::groupId() {
00055     return( payloadBuffer[0] );
00056 }