Globalsat ET-314 GPS Engine Board [14/22] Nmea input command

ET-314AC

High Performance GPS Engine Board

2010/4/1

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NMEA Input Command

A). Set Serial Port ID: 100 Set PORTA parameters and protocol

This command message is used to set the protocol (SiRF Binary or NMEA) and/or the

communication parameters (baud rate, data bits, stop bits, and parity). Generally, this command

is used to switch the module back to SiRF Binary protocol mode where a more extensive

command message set is available. When a valid message is received, the parameters are stored

in battery-backed SRAM and the receiver will resumes using the saved parameters.

Table B-1 contains the input values for the following example:

Switch to SiRF binary protocol at 9600,8,N,1

$PSRF100,0,9600,8,1,0*0C

Table B-1 Set serial Port Data Format

Name Example Units Description

Message ID $PSRF100 PSRF100 protocol header

Protocal 0 0=SiRF Binary, 1=NMEA

Baud 9600 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200

DataBits 8 8,7. Note that SiRF protocol is only valid for 8 Data bits

StopBits 1 0,1

Parity 0 0=None, 1=Odd, 2=Even

Checksum *0C

<CR><LF> End of message termination