$GJ - GPS Jamming/Spoofing Indication
Set or query the rate for
$GJ
unsolicited report messages for jamming and spoofing indicators.
Also can retrieve the most current
$GJ
message. See unsolicited message description for
$GJ
message format.
$GJ <@|?|<rate>>*xx
Parameter
Description
@
Repeat most recent
$GJ
message
?
Query current
$GJ
rate
rate
Disable or set rate of
$GJ
messages
Returns one of:
Parameter
Description
$GJ
<spoof_state>,<jamming_le
vel>*xx
The most recent
$GS
message. See GPS
Jamming/Spoofing - Unsolicited Messages for more
detail on the outputs of this message
$GJ <rate>*xx
The current
$GJ
rate
$GJ OK*xx
Parameters updated successfully
$GJ ERR*xx
Command input error
Notes:
For the query option, the return value of
$GJ <rate>*xx
requires different parsing than the
normal
$GJ
message format. The application should check if a comma is present in the
$GJ
string, and, if so, assume it is the standard jamming/spoofing indication. If no comma is present
and the value is a number, then the value is the rate being returned in response to the
$GJ ?
query.
June 2020
Swarm Tile Manual - Rev 1.00
40/63