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swpacket.h
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swpacket.h
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/**
* Copyright (c) 2011 panStamp <[email protected]>
*
* This file is part of the panStamp project.
*
* panStamp is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* any later version.
*
* panStamp is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with panStamp; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
* USA
*
* Author: Daniel Berenguer
* Creation date: 06/03/2013
*/
#ifndef _SWPACKET_H
#define _SWPACKET_H
#include "ccpacket.h"
#include "datatypes.h"
/**
* SWAP definitions
*/
#ifdef SWAP_EXTENDED_ADDRESS
#define SWAP_DATA_HEAD_LEN 9
#else
#define SWAP_DATA_HEAD_LEN 6
#endif
#define SWAP_REG_VAL_LEN CC1101_DATA_LEN - SWAP_DATA_HEAD_LEN // SWAP data payload - max length
#define SWAP_BCAST_ADDR 0x00 // SWAP broadcast address
#define SWAP_NB_TX_TRIES 3 // Number of transmission retries
#define SWAP_TX_DELAY (panstamp.radio.devAddress & 0xFF) * 2 // Delay before sending
#define SWAP_EXTENDED_ADDRESS_BIT 0x80
/**
* SWAP message functions
*/
enum SWAPFUNCT
{
SWAPFUNCT_STA = 0x00,
SWAPFUNCT_QRY,
SWAPFUNCT_CMD,
SWAPFUNCT_ACK // 0x03 - Reserved for future adoption by SWAP
};
/**
* Adressing schema
*/
enum SWAPADDR_SCHEMA
{
SWAPADDR_SIMPLE = 0,
SWAPADDR_EXTENDED
};
/**
* Macros
*/
#ifndef SWAP_EXTENDED_ADDRESS
#define smartDecrypt() smartEncrypt(true)
#endif
/**
* SWDATA : SWAP data structure
*/
struct SWDATA
{
/**
* Data buffer
*/
uint8_t *data;
/**
* Data length
*/
uint8_t length;
/**
* Data type
*/
SWDTYPE type;
};
class SWPACKET
{
private:
/**
* Raw packet
*/
CCPACKET ccPacket;
/**
* smartEncrypt
*
* Apply Smart Encryption to the SWAP packet passed as argument
*
* 'decrypt': if true, Decrypt packet. Encrypt otherwise
*/
#ifndef SWAP_EXTENDED_ADDRESS
void smartEncrypt(bool decrypt=false);
#endif
/**
* aesCrypto
*
* Apply AES-128 encryption with CTR cipher to the SWAP packet passed
* as argument
*/
//#ifdef PANSTAMP_NRG
void aesCrypto(void);
//#endif
public:
/**
* Destination address
*/
uint16_t destAddr;
/**
* Source address
*/
uint16_t srcAddr;
/**
* Hop counter. Incremented each time the message is repeated
*/
uint8_t hop;
/**
* Security option byte
*/
uint8_t security;
/**
* Security cyclic nonce
*/
uint8_t nonce;
/**
* Function byte
*/
uint8_t function;
/**
* Type of addressing schema
*/
uint8_t addrType;
/**
* Register address
*/
uint8_t regAddr;
/**
* Register id
*/
uint8_t regId;
/**
* Register value
*/
SWDATA value;
/**
* SWPACKET
*
* Class constructor
*
* @param packet Pointer to the raw CC1101 packet
*/
SWPACKET(CCPACKET *packet);
/**
* SWPACKET
*
* Class constructor
*/
SWPACKET(void);
/**
* send
*
* Send SWAP packet
*
* #return:
* True if the transmission succeeds
* False otherwise
*/
bool send(void);
};
#endif