u-blox ANTARIS 4, Руководство по системной интеграции

Страница: 115 / 187

your position is our focus
4.8 Receiver Configuration
4.8.1 Configuration Concept
Th NTAR 4 GPS hnology fully ble with UBX protocol configuration messages (message class
UBX-CFG). config ation of rec during normal operation mode. The configuration
da auto tically red to th urre ction and becomes immediately active (see Figure 91 ).
4 GPS core always uses the current configuration.
t settings if they are saved to the permanent
ttings are copied to the current section after a
start-up or whenever a ‘LOAD’ command is received. The ‘CLEAR’ command erases the settings in the
ection but not the current section.
Note e ‘SAVE ‘CLE can be sent to the receiver with an UBX-CFG-CFG
message.
e A IS
®
Tec is configura
The ur the eiver can be changed
ta is ma
®
sto e c nt configuration se
The ANTARIS
The settings from the current section will only become permanen
configuration section with a ‘SAVE’ command. The permanent se
permanent s
Th ’, ‘LOAD’ and AR’ commands
Permanent
Default
Current
Configuration
Configuration
Load/Reset
Save
UBX-CFG-CFG
UBX-CFG-xxx
UBX-CFG-xxx
AN Core
set parameter
Configuration
TARIS
®
GPS
poll parameter
UBX-CFG-CFG
F e o n nce
L Cost r iv a of sibil s nfig ration with pin settings or
further information refer to .8.2 .
e Media
y backup RAM for Low Cost Receivers or the FLASH memory for
Programmable Receivers. The stored configuration will be loaded at every restart.
Clear
igur 91: C nfiguratio co pt
ow ece ers lso fer the pos
Section 4
ity to choo e a co u (GPSMODE pins). F
4.8.1.1 Configuration Storag
The configuration is stored in the on-chip batter
An overview of the memory/storage media:
Memory/Storage Media Specifics
SRAM (Static RAM) Volatile RAM, stored data gets lost after a power down.
On-chip BBR (battery backup RAM) Volatile RAM,
applied.
(Low Cost Receivers)
stored data remain only if a Backup Battery is
Also used to store receiver configuration and GPS data.
FLASH
(Programmable GPS receivers)
Non Volatile RAM, used to store data and receiver configuration .
ROM (Read Only Memory) ROM holds the firmware of the GPS receiver
EEPROM
(NEO-4S only)
Non Volatile RAM, used to store data, receiver configuration. Only
available for NEO-4S. Requires connecting the EEPROM via SPI to
NEO-4S.
Table 45: Memory/ Storage Media on
GPS Modules - System Integration Manual (SIM) (incl. Reference Design) Receiver Description
GPS.G4-MS4-05007-A1 Page 115