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4.2.1 Binary Input Messages
4.2.1.1 EverMore Binary Input Message 0x80: Initialization
Purpose
Used to :
1. Set the initial time and position of the GPS receiver.
2. Select datum other than the default WGS-84.
3. Select the type of NMEA messages to output.
4. Enable or disable EverMore binary message output.
5. Change the baud rate configuration.
Format
Byte # Contents Range Size Scale Unit
1 Message ID = 0x80 Unsigned byte
2 ~ 3 GPS week 0 ~ 65535 Unsigned 16bit integer week
4 ~ 7 GPS tow 0 ~ 60479900 Unsigned 32bit integer 1/100 sec
8 ~ 9 Latitude +/- 900 Signed 16bit integer 1/10 degree
10 ~ 11 Longitude +/- 1800 Signed 16bit integer 1/10 degree
12 ~ 13 Altitude -1000 ~ 18000 Signed 16bit integer meter
14 ~ 15 Datum ID 0 ~ 65535 Unsigned 16bit integer
16 Restart Mode (decimal)
0 = default mode
1 = hot start
2 = warm start
3 = cold start
4 = test start
10 = datum input
Unsigned byte
17 NMEA Message Control Switch (1:ON, 0:OFF)
bit0 : GGA message on/off
bit1 : GLL message on/off
bit2 : GSA message on/off
bit3 : GSV message on/off
bit4 : RMC message on/off
bit5 : VTG message on/off
bit6 : Checksum on/off
EverMore Message Control Switch
bit7 : EverMore binary message on/off
18 Baud Rate Control
0 = 4800bps
1 = 9600bps
2 = 19200bps
3 = 38400bps
See Appendix-A for Datum ID to use. When changing the Datum ID, Restart Mode field has to
be set to 0x0A.