fsfw/src/fsfw/tmtcpacket/SpacePacketBase.cpp

#include "fsfw/tmtcpacket/SpacePacketBase.h"
#include "fsfw/serviceinterface/ServiceInterface.h"

#include <cstring>

SpacePacketBase::SpacePacketBase(const uint8_t* setAddress) {
    this->data = reinterpret_cast<SpacePacketPointer*>(const_cast<uint8_t*>(setAddress));
}

SpacePacketBase::~SpacePacketBase() {
};

//CCSDS Methods:
uint8_t SpacePacketBase::getPacketVersionNumber( void ) {
    return (this->data->header.packet_id_h & 0b11100000) >> 5;
}

ReturnValue_t SpacePacketBase::initSpacePacketHeader(bool isTelecommand,
        bool hasSecondaryHeader, uint16_t apid, uint16_t sequenceCount) {
    if(data == nullptr) {
#if FSFW_VERBOSE_LEVEL >= 1
#if FSFW_CPP_OSTREAM_ENABLED == 1
        sif::warning << "SpacePacketBase::initSpacePacketHeader: Data pointer is invalid"
                << std::endl;
#else
        sif::printWarning("SpacePacketBase::initSpacePacketHeader: Data pointer is invalid!\n");
#endif
#endif
        return HasReturnvaluesIF::RETURN_FAILED;
    }
    //reset header to zero:
    memset(data, 0, sizeof(this->data->header) );
    //Set TC/TM bit.
    data->header.packet_id_h = ((isTelecommand? 1 : 0)) << 4;
    //Set secondaryHeader bit
    data->header.packet_id_h |= ((hasSecondaryHeader? 1 : 0)) << 3;
    this->setAPID( apid );
    //Always initialize as standalone packets.
    data->header.sequence_control_h = 0b11000000;
    setPacketSequenceCount(sequenceCount);
    return HasReturnvaluesIF::RETURN_OK;
}

bool SpacePacketBase::isTelecommand( void ) {
    return (this->data->header.packet_id_h & 0b00010000) >> 4;
}

bool SpacePacketBase::hasSecondaryHeader( void ) {
    return (this->data->header.packet_id_h & 0b00001000) >> 3;
}

uint16_t SpacePacketBase::getPacketId() {
    return ( (this->data->header.packet_id_h) << 8 ) +
            this->data->header.packet_id_l;
}

uint16_t SpacePacketBase::getAPID( void ) const {
    return ( (this->data->header.packet_id_h & 0b00000111) << 8 ) +
            this->data->header.packet_id_l;
}

void SpacePacketBase::setAPID( uint16_t new_apid ) {
    // Use first three bits of new APID, but keep rest of packet id as it was (see specification).
    this->data->header.packet_id_h = (this->data->header.packet_id_h & 0b11111000) |
            ( ( new_apid & 0x0700 ) >> 8 );
    this->data->header.packet_id_l = ( new_apid & 0x00FF );
}

void SpacePacketBase::setSequenceFlags( uint8_t sequenceflags ) {
    this->data->header.sequence_control_h &= 0x3F;
    this->data->header.sequence_control_h |= sequenceflags << 6;
}

uint16_t SpacePacketBase::getPacketSequenceControl( void ) {
    return ( (this->data->header.sequence_control_h) << 8 )
            + this->data->header.sequence_control_l;
}

uint8_t SpacePacketBase::getSequenceFlags( void ) {
    return (this->data->header.sequence_control_h & 0b11000000) >> 6 ;
}

uint16_t SpacePacketBase::getPacketSequenceCount( void ) const {
    return ( (this->data->header.sequence_control_h & 0b00111111) << 8 )
            + this->data->header.sequence_control_l;
}

void SpacePacketBase::setPacketSequenceCount( uint16_t new_count) {
    this->data->header.sequence_control_h = ( this->data->header.sequence_control_h & 0b11000000 ) |
            ( ( (new_count%LIMIT_SEQUENCE_COUNT) & 0x3F00 ) >> 8 );
    this->data->header.sequence_control_l = ( (new_count%LIMIT_SEQUENCE_COUNT) & 0x00FF );
}

uint16_t SpacePacketBase::getPacketDataLength() const {
    return ( (this->data->header.packet_length_h) << 8 )
            + this->data->header.packet_length_l;
}

void SpacePacketBase::setPacketDataLength( uint16_t new_length) {
    this->data->header.packet_length_h = ( ( new_length & 0xFF00 ) >> 8 );
    this->data->header.packet_length_l = ( new_length & 0x00FF );
}

size_t SpacePacketBase::getFullSize() {
    // +1 is done because size in packet data length field is: size of data field -1
    return this->getPacketDataLength() + sizeof(this->data->header) + 1;
}

uint8_t* SpacePacketBase::getWholeData() {
    return (uint8_t*)this->data;
}

void SpacePacketBase::setData( const uint8_t* p_Data ) {
    this->data = (SpacePacketPointer*)p_Data;
}

uint32_t SpacePacketBase::getApidAndSequenceCount() const {
    return (getAPID() << 16) + getPacketSequenceCount();
}

uint8_t* SpacePacketBase::getPacketData() {
    return &(data->packet_data);
}