Navman JUPITER LA000605D - Manual (Page 23)

LA000605D © 2007 Navman New Zealand. All rights reserved. Proprietary information and specifications subject to change without notice. 0
5.5 Save and Retrieve Configuration Data to Flash
The current settings of the Jupiter 32 will be stored in Flash memory upon a command from the
user. Refer to Application Note LA000266. All parameters are written as a set.
The following parameters can be stored and retrieved:
· Port A and B protocols
· Port A and B baud rates and frame formats
· NMEA per-message output rates and checksums
· SiRF Binary debug and raw tracker data output
· Datum
· Altitude hold mode, source and default
· Degraded mode and timeout
· DR timeout
· DOP mode and GDOP/PDOP/HDOP thresholds
· Elevation navigation mask
· Power navigation mask
· Static navigation mode
· Track smoothing mode
· TricklePower TM mode, on time and interval
· Push-to-Fix mode, period, maximum off and acquisition times
· DGPS source
· SBAS default PRN
5.5.1 Writing to Flash
The module accepts NMEA messaging or SiRF Binary messaging. The protocols are
defined in the Navman NMEA Reference Manual (MN000315) and the SiRF Binary Protocol
Reference Manual. These documents describe the structure of the general commands.
NMEA Store to Flash Memory command
To store all relevant parameters to Flash, send the following NMEA sentence:
$PSRF198[*CS]
SiRF Binary Store to Flash Memory command
To store all relevant parameters to Flash send a SiRF Binary message with Message ID 198.
A payload of this message should have a length of 1 byte.
5.5.2 Retrieving from Flash
At power-up, the unit will retrieve any configuration parameters stored in Flash and restore
them as a set. Individual parameters can not be restored. Settings stored in battery backed
memory are not over written.
To prevent parameters from being restored, drive the defaults pin GPIO Pad A5 to a logic
low.
Logic State Power-up Action
high or floating retrieves stored parameters in Flash on power-up if no data in
battery backup RAM
low (grounded) ignores parameters stored in flash
Table 5-3: Actions based on signal state
5.5.3 Reverting to default settings
To restore the default settings, including deleting all parameters stored in Flash, send a
factory reset command in either the NMEA or SiRF Binary protocols.