fsfw/tcdistribution/TcPacketCheck.cpp

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2020-08-18 13:09:15 +02:00
#include "../globalfunctions/CRC.h"
#include "../serviceinterface/ServiceInterfaceStream.h"
#include "../storagemanager/StorageManagerIF.h"
#include "../tcdistribution/TcPacketCheck.h"
#include "../tmtcservices/VerificationCodes.h"
TcPacketCheck::TcPacketCheck( uint16_t set_apid ) : apid(set_apid) {
}
ReturnValue_t TcPacketCheck::checkPacket( TcPacketStored* current_packet ) {
uint16_t calculated_crc = CRC::crc16ccitt( current_packet->getWholeData(), current_packet->getFullSize() );
if ( calculated_crc != 0 ) {
return INCORRECT_CHECKSUM;
}
bool condition = !(current_packet->hasSecondaryHeader()) ||
current_packet->getPacketVersionNumber() != CCSDS_VERSION_NUMBER ||
!(current_packet->isTelecommand());
if ( condition ) {
return INCORRECT_PRIMARY_HEADER;
}
if ( current_packet->getAPID() != this->apid )
return ILLEGAL_APID;
if ( !current_packet->isSizeCorrect() ) {
return INCOMPLETE_PACKET;
}
condition = (current_packet->getSecondaryHeaderFlag() != CCSDS_SECONDARY_HEADER_FLAG) ||
(current_packet->getPusVersionNumber() != PUS_VERSION_NUMBER);
if ( condition ) {
return INCORRECT_SECONDARY_HEADER;
}
return RETURN_OK;
}
uint16_t TcPacketCheck::getApid() const {
return apid;
}