Trimble Outdoors SK8 - Manual (Page 145)

Lassen-SK8 Embedded GPS Module B-5
TSIP User's Guide
TSIPPRNT TSIPPRNT translates TSIP report packet byte streams into readable reports.
It uses the same report interface routines as
TSIPCHAT , but uses 'printf'
rather than 'cprintf' so that output can be redirected to a file.
The command line for console output is:
TSIPPRNT tsip_filename
where tsip_filename is the name of a stream of TSIP report packets
collected directly from the receiver output port or from
TSIPCHAT . The
command line for re-directing output to a file is:
TSIPPRNT tsip_filename > ascii_filename
Full source code is provided. TSIPPRNT is created by compiling under any
C compiler with the macro FILE_INPUT defined ( BORLAND and
PORT_INPUT not defined) and with the include file TSIPINCL.H . The
following routines must be compiled:
TSIPPRNT.C (main)
TSIP_RPT.C
TSIP_IFC.C
TSIPPRNT code can be easily modified by the user to supply any ASCII
output file format that is required by adjusting the report interpreter routines
in
TSIP_RPT.C , provided the necessary information is contained in the
binary input file. Software flow follows that of TSIPCHAT , except with no
user-interactive and command features.
RTCM_MON RTCM_MON translates RTCM SC-104 Version 2.0 (Differential GPS
correction) byte streams off a serial port. It is designed to be configured to
the same port parameters as the TSIP receiver. RTCM streams can best be
tested by using the TSIP receiver itself as a decoder, using
TSIPCHAT and
the '/' command (Packet 0x65) which returns Packet 0x85 listing all
differential RTCM messages decoded.
RTCM_MON is provided in case the
user prefers to use a direct connection to a computer serial port to decode an
RTCM stream.
The RTCM_MON command line has no arguments. When listening to the
serial port, characters will be printed on the screen. RTCM 6-of-8 bytes
are identified by the first two bits (binary 01??????) and all other bytes are
reported as non-RTCM bytes. Once the program locks onto the RTCM
preamble and framing, it begins to report differential correction messages
for each of the satellites.
To exit the program, press [ESCAPE].
Bit-Slipping Even though the RTCM bytes are 6 bits of data and fit neatly into a 8-bit
byte once the lead bits '01' are attached, some reference receivers do not
align the RTCM data onto 8-bit boundaries for the serial link (“bit-
slipping”).
RTCM_MON automatically searches for bit-slipping.