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10.5 External Data
External sources of position, velocity and/or heading can be integrated into the Boreas filter solution. The data
can be sent to Boreas in the ANPP format over the primary (RS232 or RS422), auxiliary (RS232 or RS422) or
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
11.4.24 External Position and Velocity Packet
11.4.25 External Position Packet
11.4.26 External Velocity Packet
11.4.27 External Body Velocity Packet
11.4.28 External Heading Packet
11.4.39 External Odometer Packet
11.4.40 External Air Data Packet
Table 32: ANPP External Data Packets
10.6 GPIO Pins and the Auxiliary Port
In addition to the primary port and CAN port, Boreas 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 Boreas
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
. Changes to these baud rates can be made by using the Baud Rates page in the
or
.
The available GPIO and auxiliary functions are listed in the section
. The
function of a GPIO pin or the auxiliary port can be changed at any time using the GPIO Configuration page in
the Boreas
or
. GPIO 1 and GPIO 2 function at 0 to 5 V (or 0 to 3.3 V) levels for digital input,
digital output, frequency input and frequency output, but when a serial data function is selected that GPIO pin
automatically switches to RS232 level.
v1.2
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11 Oct 2022
Boreas Reference Manual • Interfacing