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GLAST/LAT > DAQ and FSW > FSW > Doxygen Index > THS / V1-5-2

Constituent: timetone     Tag: linux-gcc

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THS_sntpReader.h File Reference

TimeTone simulation for testing THS (Time Hack Services). More...

#include <time.h>

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Typedefs
typedef unsigned int(*	THS_sntp_timetone_cb )(unsigned int absTimeSec, unsigned int flags)
	Typedef for THS_sntp timetone callback routine.
Functions
unsigned int	THS_sntpGetTime (struct timespec *curTime, char *remoteHost, time_t *tripTime)
	Read a Sntp server over net (RFC2030).
unsigned int	THS_sntpGetRfc868Time (time_t *curTime, char *remoteHost)
	Read a time server over net (RFC868) (actually simpiler than SNTP).
unsigned int	THS_sntpTimeStr (time_t *timeIn, char *buff)
	convert 32b time in sec to ascii string
unsigned int	THS_sntpTimeLoop (char *server)
	Simple loop to just read the timeserver.
unsigned int	THS_sntpTimetoneTask (char *server, THS_sntp_timetone_cb cb, int printIt)
	Timetone task to run as SC simulator (probably mv2304 with 1553).

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Detailed Description

TimeTone simulation for testing THS (Time Hack Services).

Author:

Ed Bacho -- ebacho@slac.stanford.edu

The LAT receives a "timeTOne" message from the spacecraft once a second telling the LAT the absolute time on the next PPS hardware pulse. It should arrive at the LAT 500-800 milliSec before the PPS (PulsePerSec).

This file implements routines to simluate the once a second timetone messgae.

These routines poll a NTP or SNTP time server over the net and call the given callback when there is a change in the secconds field of the time.

Although these routines can use any timeserver, for accurate testing we expect to poll the XLi time server that also provides a correlated PPS signal to the LAT.

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Typedef Documentation

unsigned int(* THS_sntp_timetone_cb)(void *prm, WCT_time absTime)

Typedef for THS_sntp timetone callback routine. Parameters: absTimeSec  Seconds since 1/1/2001 provided by timetone flags  User provided flags Returns: status

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Function Documentation

unsigned int THS_sntpGetRfc868Time (  time_t *  curTime, char *  remoteHost )

Read a time server over net (RFC868) (actually simpiler than SNTP). Parameters: curTime  - fill in current time in this buffer remoteHost  - SNTP server to talk to Returns: status Read a TIME server (RFC868) -- very simple and low res (secs) -- returns time in sec since 1/1/1900

unsigned int THS_sntpGetTime (  struct timespec *  curTime, char *  remoteHost, time_t *  tripTime )

Read a Sntp server over net (RFC2030). Parameters: curTime  - fill in current time in this buffer remoteHost  - SNTP server to talk to tripTime  - fill in trip time in this buffer Returns: status Read a Sntp (RFC2030) -- reads from single server -- returns time in sec and partial sec since 1/1/1900

unsigned int THS_sntpTimeLoop (  char *  server  )

Simple loop to just read the timeserver. Parameters: server  - SNTP server to talk to Returns: status

unsigned int THS_sntpTimeStr (  time_t *  timeIn, char *  buff )

convert 32b time in sec to ascii string Parameters: timeIn  time to convert buff  buffer to fill with ascii Returns: status

unsigned int THS_sntpTimetoneTask (  char *  server, THS_sntp_timetone_cb  cb, int  printIt )

Timetone task to run as SC simulator (probably mv2304 with 1553). Parameters: server  SNTP server to talk to cb  if not NULL, run the callback once a sec where cb(absTime, flags) printIt  Sprint info as process Returns: status

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