FH_RxPacketDM.cpp

00001 /**
00002  * Copyright (c) 2015 Digi International Inc.,
00003  * All rights not expressly granted are reserved.
00004  *
00005  * This Source Code Form is subject to the terms of the Mozilla Public
00006  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
00007  * You can obtain one at http://mozilla.org/MPL/2.0/.
00008  *
00009  * Digi International Inc. 11001 Bren Road East, Minnetonka, MN 55343
00010  * =======================================================================
00011  */
00012 
00013 #include "FH_RxPacketDM.h"
00014 
00015 using namespace XBeeLib;
00016 
00017 /** Class constructor */
00018 FH_RxPacketDM::FH_RxPacketDM() : FrameHandler(ApiFrame::RxPacketAO0), receive_cb(NULL)
00019 {
00020 }
00021 
00022 /** Class destructor */
00023 FH_RxPacketDM::~FH_RxPacketDM()
00024 {
00025 }
00026 
00027 void FH_RxPacketDM::register_receive_cb(receive_dm_cb_t function)
00028 {
00029     receive_cb = function;
00030 }
00031 
00032 void FH_RxPacketDM::unregister_receive_cb(void)
00033 {
00034     receive_cb = NULL;
00035 }
00036 
00037 /* DM RX packet offsets */
00038 #define DM_RX_OPTIONS_OFFSET        10
00039 #define DM_RX_DATA_OFFSET           11
00040 #define DM_RX_OVERHEAD              (8+2+1)
00041 
00042 #define BROADCAST_PACKET            0x02
00043 
00044 void FH_RxPacketDM::process_frame_data(const ApiFrame *const frame)
00045 {
00046     /* The caller checks that the type matches, so no need to check it here again */
00047 
00048     if (receive_cb == NULL) {
00049         return;
00050     }
00051 
00052     /* We got a rx packet, decode it... */
00053     const uint8_t *datap = frame->get_data();
00054     const uint64_t sender64 = addr64_from_uint8_t(datap);
00055     const uint8_t rx_options = datap[DM_RX_OPTIONS_OFFSET];
00056     const RemoteXBeeDM sender = RemoteXBeeDM(sender64);
00057 
00058     receive_cb(sender, rx_options & BROADCAST_PACKET, &datap[DM_RX_DATA_OFFSET], frame->get_data_len() - DM_RX_OVERHEAD);
00059 }