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2020, REYAX TECHNOLOGY CO., LTD.
10
RYS8830 RYS8833
`GNSS Module Software Guide
12.
GPS ephemeris data injection
Syntax
Response
@ GEMS
[GEMS] Done
[GEMS] Ready
This command is used to inject the GPS ephemeris data into the RYS8830. Transmit the GPS
ephemeris data (binary data) following the Ready response from the RYS8830.
The GPS ephemeris data size is 3072 bytes. In addition, the data which is actually required
has the header and footer added.
This command must be issued at “Idle”
mode.
Argument: None
13.
Positioning-use satellite setting
Syntax
Response
@GNS
[
GNS
] Done
This command is used to select the satellite systems to be used for positioning.
The satellite systems are assigned to the bits of the argument. “1” is set for
the bits of the
systems which are to be used and “0” is set for the bits of the systems which are not be
used. Arguments can be specified in decimal or hexadecimal notation. With hexadecimal
notation, add “0x” in front of the numeral.
This command must be
issued at “Idle” mode.
Argument:
Field
Description
arg 1
The satellite systems used for positioning are set on a bit by bit basis (0:
system not used, 1: system used).
bit 0 : GPS
bit 1 : GLONASS
bit 2 : SBAS
bit 3 : QZSS L1-CA
(Default value: 0x01)
