org.yamcs.sle

Class CcsdsTime

java.lang.Object

org.yamcs.sle.CcsdsTime

public class CcsdsTime
extends Object

CCSDS time storing the number of days since 1958 and the number of picoseconds in the day

Constructor Summary

Constructors

Constructor and Description
CcsdsTime(int numDays, long picosecInDay)

Method Summary

Modifier and Type	Method and Description
static CcsdsTime	fromCcsds(byte[] ds) P-field is implicit (not present, defaulted to 41 hex)
static CcsdsTime	fromCcsdsPico(byte[] ds) P-field is implicit (not present, defaulted to 42 hex)
static CcsdsTime	fromJavaMillisec(long javaTime) Converts a java time in milliseconds
static CcsdsTime	fromSle(Time time) Gets the time from the SLE time class
byte[]	getDaySegmented() P-field is implicit (not present, defaulted to 41 hex)
int	getNumDays()
long	getPicosecInDay()
static CcsdsTime	now() Gets the current time
long	toJavaMillisec() Converts to java milliseconds.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

CcsdsTime

public CcsdsTime(int numDays,
                 long picosecInDay)

Method Detail

fromCcsds

public static CcsdsTime fromCcsds(byte[] ds)

P-field is implicit (not present, defaulted to 41 hex)

T-field:

• 2 octets: number of days since 1958/01/01 00:00:00
• 4 octets: number of milliseconds of the day
• 2 octets: number of microseconds of the millisecond (set to 0 if not used)

Parameters:

ds -

Returns:

fromCcsdsPico

public static CcsdsTime fromCcsdsPico(byte[] ds)

P-field is implicit (not present, defaulted to 42 hex)

T-field:

• 2 octets: number of days since 1958/01/01 00:00:00
• 4 octets: number of milliseconds of the day
• 4 octets: number of picoseconds of the millisecond (set to 0 if not used)

Parameters:

ds -

Returns:

now

public static CcsdsTime now()

Gets the current time

Returns:

fromJavaMillisec

public static CcsdsTime fromJavaMillisec(long javaTime)

Converts a java time in milliseconds

Parameters:

javaTime -

Returns:

fromSle

public static CcsdsTime fromSle(Time time)

Gets the time from the SLE time class

Parameters:

time -

Returns:

getDaySegmented

public byte[] getDaySegmented()

P-field is implicit (not present, defaulted to 41 hex)

T-field:

• 2 octets: number of days since 1958/01/01 00:00:00
• 4 octets: number of milliseconds of the day
• 2 octets: number of microseconds of the millisecond (set to 0 if not used)

getPicosecInDay

public long getPicosecInDay()

getNumDays

public int getNumDays()

toJavaMillisec

public long toJavaMillisec()

Converts to java milliseconds. Note: this loses precision.

Returns:

the java milliseconds since 1970.

toString

public String toString()

Overrides:

toString in class Object