40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
#include "TcPacketCheck.h"
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#include "../globalfunctions/CRC.h"
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#include "../serviceinterface/ServiceInterfaceStream.h"
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#include "../storagemanager/StorageManagerIF.h"
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#include "../tmtcservices/VerificationCodes.h"
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TcPacketCheck::TcPacketCheck( uint16_t setApid ) : apid(setApid) {
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}
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ReturnValue_t TcPacketCheck::checkPacket( TcPacketStored* currentPacket ) {
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uint16_t calculated_crc = CRC::crc16ccitt( currentPacket->getWholeData(),
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currentPacket->getFullSize() );
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if ( calculated_crc != 0 ) {
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return INCORRECT_CHECKSUM;
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}
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bool condition = (not currentPacket->hasSecondaryHeader()) or
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(currentPacket->getPacketVersionNumber() != CCSDS_VERSION_NUMBER) or
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(not currentPacket->isTelecommand());
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if ( condition ) {
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return INCORRECT_PRIMARY_HEADER;
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}
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if ( currentPacket->getAPID() != this->apid )
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return ILLEGAL_APID;
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if ( not currentPacket->isSizeCorrect() ) {
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return INCOMPLETE_PACKET;
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}
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condition = (currentPacket->getSecondaryHeaderFlag() != CCSDS_SECONDARY_HEADER_FLAG) ||
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(currentPacket->getPusVersionNumber() != PUS_VERSION_NUMBER);
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if ( condition ) {
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return INCORRECT_SECONDARY_HEADER;
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}
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return RETURN_OK;
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}
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uint16_t TcPacketCheck::getApid() const {
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return apid;
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}
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