fsfw/datalinklayer/TcTransferFrameLocal.cpp

52 lines
2.2 KiB
C++

/**
* @file TcTransferFrameLocal.cpp
* @brief This file defines the TcTransferFrameLocal class.
* @date 27.04.2013
* @author baetz
*/
#include "TcTransferFrameLocal.h"
#include "../globalfunctions/CRC.h"
#include "../serviceinterface/ServiceInterfaceStream.h"
#include <string.h>
TcTransferFrameLocal::TcTransferFrameLocal(bool bypass, bool controlCommand, uint16_t scid,
uint8_t vcId, uint8_t sequenceNumber, uint8_t setSegmentHeader, uint8_t* data, uint16_t dataSize, uint16_t forceCrc) {
this->frame = (tc_transfer_frame*)&localData;
frame->header.flagsAndScid = (bypass << 5) + (controlCommand << 4) + ((scid & 0x0300) >> 8);
frame->header.spacecraftId_l = (scid & 0x00FF);
frame->header.vcidAndLength_h = (vcId & 0b00111111) << 2;
frame->header.length_l = sizeof(TcTransferFramePrimaryHeader) -1;
frame->header.sequenceNumber = sequenceNumber;
frame->dataField = setSegmentHeader;
if (data != NULL) {
if (bypass && controlCommand) {
memcpy(&(frame->dataField), data, dataSize);
uint16_t totalSize = sizeof(TcTransferFramePrimaryHeader) + dataSize + FRAME_CRC_SIZE -1;
frame->header.vcidAndLength_h |= (totalSize & 0x0300) >> 8;
frame->header.length_l = (totalSize & 0x00FF);
uint16_t crc = CRC::crc16ccitt(getFullFrame(), getFullSize() -2);
this->getFullFrame()[getFullSize()-2] = (crc & 0xFF00) >> 8;
this->getFullFrame()[getFullSize()-1] = (crc & 0x00FF);
} else if (dataSize <= 1016) {
memcpy(&(frame->dataField) +1, data, dataSize);
uint16_t dataCrcSize = sizeof(TcTransferFramePrimaryHeader) + 1 + dataSize + FRAME_CRC_SIZE -1;
frame->header.vcidAndLength_h |= (dataCrcSize & 0x0300) >> 8;
frame->header.length_l = (dataCrcSize & 0x00FF);
uint16_t crc = CRC::crc16ccitt(getFullFrame(), getFullSize() -2);
this->getFullFrame()[getFullSize()-2] = (crc & 0xFF00) >> 8;
this->getFullFrame()[getFullSize()-1] = (crc & 0x00FF);
} else {
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::debug << "TcTransferFrameLocal: dataSize too large: " << dataSize << std::endl;
#endif
}
} else {
//No data in frame
}
if (forceCrc != 0 ) {
localData.data[getFullSize()-2] = (forceCrc & 0xFF00) >> 8;
localData.data[getFullSize()-1] = (forceCrc & 0x00FF);
}
}