TS-7180 GPS
From embeddedTS Manuals
The TS-7180 has an on-board Telit SL869 GPS receiver. A socket is provided for the connection of an antenna.
Before it can be used, power to the GPS receiver must be enabled by setting GPIO #19 low, as shown below:
tshwctl -a 19 -r -w 1
The GPS receiver may then be accessed via the /dev/ttymxc7 uart.