Package org.yamcs.sle

Class CcsdsTime

java.lang.Object

org.yamcs.sle.CcsdsTime

All Implemented Interfaces:

Comparable<CcsdsTime>

public class CcsdsTime
extends Object
implements Comparable<CcsdsTime>

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

Field Summary

Fields

Modifier and Type	Field	Description
static int	MS_IN_DAY
static int	SEC_IN_DAY

Constructor Summary

Constructors

Constructor	Description
CcsdsTime(int numDays, long picosecInDay)

Method Summary

Modifier and Type	Method	Description
int	compareTo(CcsdsTime o)
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(ConditionalTime time)
static CcsdsTime	fromSle(Time time)	Gets the time from the SLE time class
static CcsdsTime	fromUnix(long unixSeconds, int nanosec)	Converts a UNIX time in seconds since 1970, nanoseconds in second (such as returned by gettitmeofday)
byte[]	getDaySegmented()	P-field is implicit (not present, defaulted to 41 hex)
byte[]	getDaySegmentedPico()	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)
int	getNumDays()
long	getPicosecInDay()
static CcsdsTime	now()	Gets the current time
long	toJavaMillisec()	Converts to java milliseconds.
Time	toSle(int sleVersion)
static Time	toSle(CcsdsTime time, int sleVersion)
static ConditionalTime	toSleConditional(CcsdsTime time, int sleVersion)
String	toString()	Formats the time with up to nanosecond resolution
String	toStringPico()	Converts to ISO8860 string with 12 digits picoseconds after dot

Methods inherited from class java.lang.Object

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

Field Detail

SEC_IN_DAY

public static final int SEC_IN_DAY

See Also:

Constant Field Values

MS_IN_DAY

public static final int MS_IN_DAY

See Also:

Constant Field Values

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:

the current time

fromJavaMillisec

public static CcsdsTime fromJavaMillisec(long javaTime)

Converts a java time in milliseconds

Parameters:

javaTime -

Returns:

fromUnix

public static CcsdsTime fromUnix(long unixSeconds,
                                 int nanosec)

Converts a UNIX time in seconds since 1970, nanoseconds in second (such as returned by gettitmeofday)

Parameters:

unixSeconds - seconds since 1-Jan-1970 00:00:00 (without leap seconds)

nanosec - nanoseconds in second

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)

getDaySegmentedPico

public byte[] getDaySegmentedPico()

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)

getPicosecInDay

public long getPicosecInDay()

getNumDays

public int getNumDays()

toSle

public Time toSle(int sleVersion)

fromSle

public static CcsdsTime fromSle(Time time)

Gets the time from the SLE time class

Parameters:

time -

Returns:

fromSle

public static CcsdsTime fromSle(ConditionalTime time)

toSle

public static Time toSle(CcsdsTime time,
                         int sleVersion)

toSleConditional

public static ConditionalTime toSleConditional(CcsdsTime time,
                                               int sleVersion)

toJavaMillisec

public long toJavaMillisec()

Converts to java milliseconds. Note: this loses precision.

Returns:

the java milliseconds since 1970.

compareTo

public int compareTo(CcsdsTime o)

Specified by:

compareTo in interface Comparable<CcsdsTime>

toString

public String toString()

Formats the time with up to nanosecond resolution

Overrides:

toString in class Object

toStringPico

public String toStringPico()

Converts to ISO8860 string with 12 digits picoseconds after dot

Returns: