fsfw/src/fsfw/tmtcpacket/SpacePacketBase.cpp

#include "fsfw/tmtcpacket/SpacePacketBase.h"

#include <cstring>

#include "fsfw/serviceinterface/ServiceInterface.h"

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; }

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

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

ReturnValue_t SpacePacketBase::setData(uint8_t* pData, size_t maxSize, void* args) {
  if (maxSize < 6) {
    return HasReturnvaluesIF::RETURN_FAILED;
  }
  this->data = reinterpret_cast<SpacePacketPointer*>(const_cast<uint8_t*>(pData));
  return HasReturnvaluesIF::RETURN_OK;
}