User's Manual

Disable/enable messages

This command allows selective disabling/enabling of messages from the Tracker, as well as

setting parameters including message delivery preferences, controlling the GPIO1 pin, and

controlling the red and green LEDs.

$OP <?|p1=<val>[,p2=<val>[,...]]]*xx

Parameter

Description

Display current settings

DT=0|<rate>

Disable or set rate of $DT messages

GJ=0|<rate>

`Disable or set rate of $GJ messages

GN=0|<rate>

Disable or set rate of $GN messages

GS=0|<rate>

Disable or set rate of $GS messages

LG=<led_mode>

Set operating mode for green LED

LR=<led_mode>

Set operating mode for red LED

MD=I|P

Set msg delivery immediate (default) or polled

Returns one of:

Value

Description

$OP OK*xx

Parameters updated successfully

$OP ERR*xx

An error response

Notes:

The ? option allows reading back the current settings. This is a comma separated list of all

options. NOTE: Options are in alphabetical order, therefore as new options are added, they may

appear in the middle of the string. The user application should NOT rely on any given option