User guide

Global Positioning System (GPS)
Rev 2.3 Feb.12 219
Sending Unsolicited TAIP Messages Over the Local
Connection
Standard TAIP requires a request before GPS reports are sent. The AirLink
device, however, can be configured to allow TAIP formatted messages to be sent
over any UDP Port without request commands. This is useful for those
applications which can listen for TAIP messages but cannot send UDP request
packets.
a. Set the S53 port to 1000. The local IP address will automatically be used.
b. Set *PPLATSR, Local Report Type, to F0 or F1.
c. Set *PPLATS, Local Reporting Time Interval, to 5 to send reports every 5
seconds (can be adjusted as circumstances warrant).
d.
Streaming Messages (Local)
The Product Name can be configured to send standard TAIP messages
(sentences) in ASCII over the serial port and/or USB port without a PPP
connection to the local computer.
Send the command ATGPS1 to the serial port, ATGPS2 to the USB port, or
ATGPS3 for both to begin the TAIP stream. The example below shows the stream
in HyperTerminal connecting directly to a Product Name via the comport and/or
USB port. To stop the stream, with either terminal connection, use the command
ATGPS0 (this can be entered even while data is streaming).
Persistent Streaming
To have persistent streaming, allowing you to stream the data even after the
modem is reset, configure *PGPS and set *PGPSR for TAIP.
- *PGPS
0 - Disable TAIP streaming.
1 - Stream the TAIP strings out the serial port only.
2 - Stream the TAIP strings out the USB port only.
3 - Stream the TAIP strings out both the serial and the USB ports.
E1 - TAIP GGA, RMC, and VTG sentences.