fsfw/tmtcpacket/SpacePacketBase.cpp
2020-10-28 02:20:12 +01:00

105 lines
3.4 KiB
C++

#include "SpacePacketBase.h"
#include "../serviceinterface/ServiceInterfaceStream.h"
#include <cstring>
SpacePacketBase::SpacePacketBase( const uint8_t* set_address ) {
this->data = (SpacePacketPointer*) set_address;
}
SpacePacketBase::~SpacePacketBase() {
};
//CCSDS Methods:
uint8_t SpacePacketBase::getPacketVersionNumber( void ) {
return (this->data->header.packet_id_h & 0b11100000) >> 5;
}
void SpacePacketBase::initSpacePacketHeader(bool isTelecommand,
bool hasSecondaryHeader, uint16_t apid, uint16_t sequenceCount) {
//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);
}
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 );
}
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( void ) {
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);
}