freewtp/docs/GPSACP.md

GPSACP message

GPSACP messages are defined in WTP - SCG Reference Points can be sent within WTP Event Requests.

Definition GPS Last Acquired Position

The GPS Last Acquired Position contains the output of the AT$GPSACP command from an WWAN Modem.

Format

0                   1                   2                   3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                         Timestamp                             |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|    WWAN Id    |       GPSACP ....
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Vendor Id 18681 (Travelping GmbH)

Type 15

Length >= 5

Timestamp The WTP’s time when the meassurment was recorded

WWAN Id WWAN Interface Id, used to differentiate between multiple WWAN interfaces, MUST be between one (1) and 16.

GPSACP The full output (including the starting $GPSACP) of the AT$GPSACP command the WWAN Interface:

$GPSACP:<UTC>,<latitude>,<longitude>,<hdop>,<altitude>,<fix>,<cog>,<spkm>,<spkn>,<date>,<nsat> 

<UTC>: HHMMSS
  HH: Hour of day (00..23)
  MM: Minute (00..59)
  SS: Second (00..60)
<latitude>: ddmm.mmmmD
  dd: Degree (00..90)
  mm.mmmm: Minutes with decimal fraction (00.0000 .. 59.9999)
  D: Direction (N|S)
<longitude>: dddmm.mmmmD
  dd: Degree (00..180)
  mm.mmmm: Minutes with decimal fraction (00.0000 .. 59.9999)
  D: Direction (W|E)
<hdop>: xx.x
  xx.x: Horizontal dilution of precision in m (00.0..99.9)
<altitude>: xxxx.x
  xxxx.x: Altitude above sea level in m (0000.0..9999.9) - Empty value for negative values.
<fix>: x
  x: Fix status (0: No fix, 1: 2D, 2: 3D)
<cog>: xxx.x
  xxx.x: Course over ground (000.0 .. 359.9)
<spkm>: xxx.x
  xxx.x: Horizontal speed in km/h (000.0 .. 999.9)
<spkn>: xxx.x
  xxx.x: Horizontal speed in knots (000.0 .. 999.9)
<date>: ddmmyy
  dd: Day (01 .. 31)
  mm: Month (01 .. 12)
  yy: Year (00 .. 99)
<nsat>: xx
  xx: Number of satallites in view (00 .. 99)