Package org.yamcs.simulator

Class ColumbusCcsdsPacket

java.lang.Object

org.yamcs.tctm.CcsdsPacket

org.yamcs.simulator.SimulatorCcsdsPacket

org.yamcs.simulator.ColumbusCcsdsPacket

public class ColumbusCcsdsPacket
extends SimulatorCcsdsPacket

CCSDS packets as used in Columbus/ISS

 primary header (6 bytes):
 3 bit = version
 1 bit = type (0 = system packet, 1 = payload packet)
 1 bit = 2nd header present
 11 bit = apid
 
 2 bit = grouping, 01 = first, 00 = cont, 10 = last packet of group
 14 bit = seq
 
 16 bit = packet length (excluding primary header) minus 1
 
 secondary header (10 bytes):
 32 bit = coarse time (seconds since 1970)
 8 bit = fine time
 2 bits = time id (see constants)
 1 bit = checksum present (2 bytes after user data)
 5 bits = packet type (see constants)
 32 bit = packet id
 

Field Summary

Fields inherited from class org.yamcs.simulator.SimulatorCcsdsPacket

seqMap

Fields inherited from class org.yamcs.tctm.CcsdsPacket

bb

Constructor Summary

Constructors

Constructor	Description
ColumbusCcsdsPacket(byte[] packet)
ColumbusCcsdsPacket(int apid, int userDataLength, int packetid)
ColumbusCcsdsPacket(int apid, int userDataLength, int packetid, boolean checksumPresent)
ColumbusCcsdsPacket(int apid, int userDataLength, int packetType, int packetid, boolean checksumPresent)
ColumbusCcsdsPacket(ByteBuffer bb)

Method Summary

Modifier and Type	Method	Description
void	fillChecksum()
int	getPacketId()
int	getPacketType()
ByteBuffer	getUserDataBuffer()
void	setPacketId(int packetId)
void	setTime(long instant)

Methods inherited from class org.yamcs.simulator.SimulatorCcsdsPacket

getSeq

Methods inherited from class org.yamcs.tctm.CcsdsPacket

appendBinaryData, getAPID, getAPID, getAPID, getByteBuffer, getBytes, getCccsdsPacketLength, getCccsdsPacketLength, getCccsdsPacketLength, getChecksumIndicator, getChecksumIndicator, getCoarseTime, getLength, getSecondaryHeaderFlag, getSecondaryHeaderFlag, getSequenceCount, getSequenceCount, getSequenceCount, getTimeId, setAPID, setCccsdsPacketLength, setHeader, setSequenceCount, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

ColumbusCcsdsPacket

public ColumbusCcsdsPacket(byte[] packet)

ColumbusCcsdsPacket

public ColumbusCcsdsPacket(ByteBuffer bb)

ColumbusCcsdsPacket

public ColumbusCcsdsPacket(int apid,
 int userDataLength,
 int packetid)

ColumbusCcsdsPacket

public ColumbusCcsdsPacket(int apid,
 int userDataLength,
 int packetid,
 boolean checksumPresent)

ColumbusCcsdsPacket

public ColumbusCcsdsPacket(int apid,
 int userDataLength,
 int packetType,
 int packetid,
 boolean checksumPresent)

Method Details

getUserDataBuffer

public ByteBuffer getUserDataBuffer()

Specified by:

getUserDataBuffer in class SimulatorCcsdsPacket

getPacketId

public int getPacketId()

setPacketId

public void setPacketId(int packetId)

getPacketType

public int getPacketType()

setTime

public void setTime(long instant)

fillChecksum

public void fillChecksum()

Specified by:

fillChecksum in class SimulatorCcsdsPacket