Advanced Navigation Certus OEM Reference Manual page 138

Certus Reference Manual • Interfacing
GPIO ports (RS232 only) or in a number of different formats. If using the ANPP format, use the table below to
find the relevant section.
Packet
10.4.24 External Position and Velocity Packet
10.4.25 External Position Packet
10.4.26 External Velocity Packet
10.4.27 External Body Velocity Packet
10.4.28 External Heading Packet
10.4.32 External Time Packet
10.4.33 External Depth Packet
10.4.40 External Odometer Packet
10.4.41 External Air Data Packet
10.4.46 External Magnetometers Packet
Table 31: ANPP External Data Packets
9.6 GPIO Pins and the Auxiliary Port
In addition to the primary port and CAN port, Certus contains two general purpose input/output (GPIO) pins and
an auxiliary port on the IO Breakout Connector. These pins are multi function and can be used to extend Certus
with additional peripherals, sensors and data formats. Both GPIO pins have digital input, digital output,
frequency input and frequency output functionality.
GPIO1 can also function as an RS232 (only) serial transmit line and GPIO2 can function as an RS232 (only)
serial receive line. The GPIO serial baud rate can be configured anywhere from 4800 to 250 K baud. The
auxiliary serial baud rate can be configured anywhere from 4800 to 4 M baud. See
Rate. Changes to these baud rates can be made by using the Baud Rates page in the
Manager.
The available GPIO and auxiliary functions are listed in the section
function of a GPIO pin or the auxiliary port can be changed at any time using the GPIO Configuration page in
the Certus web UI or Manager. GPIO 1 and GPIO 2 operate at standard voltage levels for digital input, digital
output, frequency input and frequency output, but when a serial data function is selected, this GPIO pin
automatically switches to RS232 voltage level.
v2.4 Page 125
10.5.3.1 Supported Baud
web UI
9.6.1 Dynamic Pin
or Certus
Functions. The
2024-12-17