45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
#include "fsfw/tcdistribution/TcPacketCheckPUS.h"
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#include "fsfw/globalfunctions/CRC.h"
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#include "fsfw/serviceinterface/ServiceInterface.h"
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#include "fsfw/storagemanager/StorageManagerIF.h"
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#include "fsfw/tmtcpacket/pus/tc/TcPacketPusBase.h"
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#include "fsfw/tmtcpacket/pus/tc/TcPacketStoredBase.h"
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#include "fsfw/tmtcpacket/pus/tc/TcPacketStoredPus.h"
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#include "fsfw/tmtcservices/VerificationCodes.h"
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TcPacketCheckPUS::TcPacketCheckPUS(uint16_t setApid) : apid(setApid) {}
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ReturnValue_t TcPacketCheckPUS::checkPacket(SpacePacketBase* currentPacket) {
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TcPacketStoredBase* storedPacket = dynamic_cast<TcPacketStoredBase*>(currentPacket);
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TcPacketPusBase* tcPacketBase = dynamic_cast<TcPacketPusBase*>(currentPacket);
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if (tcPacketBase == nullptr or storedPacket == nullptr) {
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return RETURN_FAILED;
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}
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uint16_t calculated_crc =
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CRC::crc16ccitt(tcPacketBase->getWholeData(), tcPacketBase->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 tcPacketBase->hasSecondaryHeader()) or
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(tcPacketBase->getPacketVersionNumber() != CCSDS_VERSION_NUMBER) or
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(not tcPacketBase->isTelecommand());
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if (condition) {
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return INCORRECT_PRIMARY_HEADER;
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}
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if (tcPacketBase->getAPID() != this->apid) return ILLEGAL_APID;
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if (not storedPacket->isSizeCorrect()) {
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return INCOMPLETE_PACKET;
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}
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condition = (tcPacketBase->getSecondaryHeaderFlag() != CCSDS_SECONDARY_HEADER_FLAG) ||
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(tcPacketBase->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 TcPacketCheckPUS::getApid() const { return apid; }
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