67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
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/*
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* TcPacketCheck.h
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*
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* Created on: 19.06.2012
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* Author: baetz
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*/
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#ifndef TCPACKETCHECK_H_
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#define TCPACKETCHECK_H_
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#include <framework/returnvalues/HasReturnvaluesIF.h>
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#include <framework/tmtcpacket/pus/TcPacketStored.h>
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#include <framework/tmtcservices/PusVerificationReport.h>
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/**
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* This class performs a formal packet check for incoming PUS Telecommand Packets.
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* Currently, it only checks if the APID and CRC are correct.
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* \ingroup tc_distribution
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*/
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class TcPacketCheck : public HasReturnvaluesIF {
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protected:
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/**
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* Describes the version number a packet must have to pass.
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*/
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static const uint8_t CCSDS_VERSION_NUMBER = 0;
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/**
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* Describes the secondary header a packet must have to pass.
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*/
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static const uint8_t CCSDS_SECONDARY_HEADER_FLAG = 0;
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/**
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* Describes the TC Packet PUS Version Number a packet must have to pass.
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*/
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static const uint8_t PUS_VERSION_NUMBER = 1;
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/**
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* The packet id each correct packet should have.
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* It is composed of the APID and some static fields.
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*/
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uint16_t apid;
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public:
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static const uint8_t INTERFACE_ID = TC_PACKET_CHECK;
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static const ReturnValue_t ILLEGAL_APID = MAKE_RETURN_CODE( 0 );
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static const ReturnValue_t INCOMPLETE_PACKET = MAKE_RETURN_CODE( 1 );
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static const ReturnValue_t INCORRECT_CHECKSUM = MAKE_RETURN_CODE( 2 );
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static const ReturnValue_t ILLEGAL_PACKET_TYPE = MAKE_RETURN_CODE( 3 );
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static const ReturnValue_t ILLEGAL_PACKET_SUBTYPE = MAKE_RETURN_CODE( 4 );
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static const ReturnValue_t INCORRECT_PRIMARY_HEADER = MAKE_RETURN_CODE( 5 );
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static const ReturnValue_t INCORRECT_SECONDARY_HEADER = MAKE_RETURN_CODE( 6 );
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/**
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* The constructor only sets the APID attribute.
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* @param set_apid The APID to set.
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*/
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TcPacketCheck( uint16_t set_apid );
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/**
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* This is the actual method to formally check a certain Telecommand Packet.
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* The packet's Application Data can not be checked here.
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* @param current_packet The packt to check
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* @return - \c RETURN_OK on success.
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* - \c INCORRECT_CHECKSUM if checksum is invalid.
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* - \c ILLEGAL_APID if APID does not match.
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*/
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ReturnValue_t checkPacket( TcPacketStored* current_packet );
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uint16_t getApid() const;
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};
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#endif /* TCPACKETCHECK_H_ */
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