your position is our focus
4.4.3.2
UBX Message Class
is
es,
which
are
related
to
each
other.
The
following
table
gives
the
short
names,
A
Class
a
grouping
of
messag
description
and
Class
ID
Definitions.
C ss ID
la
Class Name
Class No
Description
Examples
NAV
Navigation
0x01
Navigation
Results
Position,
Speed,
Time,
Acc,
Heading,
DOP,
SVs
used
RXM
Receiver
Manager
0x02
Receiver
Manager
Messages
Pseudo
Ranges,
avg.
C/N0,
Channel
STATUS
INF
mative
0x04
Printf-Style
Messages
Error,
Warning,
Notice
Infor
A K
Acknowledgemen
C
t
0x05
Reply
to
CFG
Input
Messages
Ack
/
Nack
CFG
ic
Model,
Set
DOP
Mask
Configuration
0x06
Receiver
Configuration
Input
Set
Dynam
UPD
Update
0x09
Firmware
Update
Messages
MON
Monitor
0x0A
ANTARIS
®
Monitor
Stack
Usage,
CPU
Load,
Communication,
IPC
and
task
status
AID
Aiding
0x0B
Navigation
Aiding
Position,
Time,
Ephemeris,
Almanac
feeds
USR
User
0x4x
SCK
Customer
Messages
SCK
Customer
Messages
TIM
Timing
0x0D
Timing
Timepulse
data,
Time
mark
data
Table 24: UBX Message Class
!
ure P
Values
are
offsets,
wh
ltiple
of
2,
4-byte
values
shall
start
at
a
multiple
of
4,
and
so
on.
This
can
easily
be
achieved
by
placing
the
largest
values
first
in
the
Message
payload
(e.g.
R8),
and
ending
with
the
smallest
(i.e.
one-byters
such
as
U1)
values.
Number Formats
All
multi-byte
values
are
ordered
in
Little
Endian
manner,
unless
mentioned
otherwise.
All
floating-point
values
are
transmitted
in
IEEE754
single
or
double
precision.
A
technical
description
of
the
IEEE754
format
can
be
swer
Book
from
the
ADS1.x
(ARM
Developers
Suite)
toolkit.
Warning
All
remaining
class
IDs
are
reserved
4.4.3.3 UBX
Payload
Struct
acking
placed
in
an
order
that
structure
packing
is
not
a
problem.
This
means
that
2-Byte
values
shall
start
on
ich
are
a
mu
Message Naming
Adding
the
class
name
and
a
dash
in
front
of
the
message
name
does
refer
to
messages.
For
example,
the
ECEF-
Message
is
referred
to
as
NAV-POSECEF.
Adding
a
dash
and
the
name,
e.g.
NAV-POSECEF-X,
does
referring
to
values.
found
in
the
An
GPS
Modules
-
System
Integration
Manual
(SIM)
(incl.
Reference
Design)
Receiver
Description
GPS.G4-MS4-05007-A1
Page 83
