Command protocol
9-25
SCLD
d.m.y
This setting command sets the date of the Real Time Clock.
Each parameter must be two digits, as following:
•
d is the day (01 to 31)
•
m is the month (01 to 12)
•
y is the year (00 to 99)
The reply is the same as per ?CLK command.
Example:
#LRSCLD31.05.22*
which means that the RTC date will be set to May, 31th
2022.
SCLT
h.m.s
This setting command sets the time of the Real Time Clock.
Each parameter must be two digits, as following:
•
h for hours (00 to 23)
•
m for minutes (00 to 59)
•
s for seconds (00 to 59)
The reply is the same as per ?CLK command.
Example:
#LRSCLT16.25.00*
which means that the RTC time will be set to 4:25 PM.
SCPC
t
This setting command is used to start the compass calibration procedure.
In order for the compass to be accurate, it must first be calibrated using the appropriate
command where
t
is the calibration time in seconds. During this period, the unit must be
oriented in all possible directions in order to extrapolate the magnetic offset. A count down
is displayed on the terminal to help understanding both the frequency of the readings and
the time left. Calibration is stored in the internal flash memory.
A typical reply is:
Compass found (code 0xC7): Magnetometer calibration: Please rotate the device next 30
seconds ( 90 Readings)
89
88
87
…
0
Calibration Done
Then calibration data for debug purposes are added.
Note: compass heading 0 (North) corresponds to the direction where the GPS antenna is
located.
Example:
#LRSCPC30*
which means that the RTC time will be set to 4:25 PM.
Содержание LR-01
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