Table of Contents
Advertisement
5 Application Programming Interface
The STINGR provides a serial interface for controlling the operation of the device. Commands are used to send
information over the simplex network, operate the GPS engine, and monitor the internal operation of the device. The
following types of commands are provided by the STINGR:
Legacy Commands (STX2, STX3)
STINGR Commands (unique to the STINGR)
Spot 3 Commands (these are not provided in this document. Please contact Globalstar for information on using
the Spot 3 API with the STINGR).
5.1 Serial Port
A half-duplex (0-3.0V) TTL asynchronous serial port (UART) is the primary interface to the user equipment. The serial
port operates with the serial parameters of 9600bps, 8 data bits, no parity, 1 stop bit.
The RX data input and the RTS inputs are 5V tolerant. The TX data and CTS outputs are 0-3.0V TTL.
RS232 input levels are not supported. RS232 data must be converted to TTL before being sent to the unit.
Each command from the DTE to the STINGR is sent in a serial packet. Upon receiving the command, the modem answers
to the DTE and, if applicable, executes the command.
In order to wake the STINGR from sleep mode and to indicate the end of the serial packet, each serial packet must be
framed by activating RTS before the first byte of the command and deactivating RTS after the last byte of the command.
Revision 1.0
09/30/15
Revision 1.0
Subject To Change without Notice
STINGR Users Manual
P a g e
| 16
Advertisement
Table of Contents
