Advanced Navigation Spatial OEM Handmatig - Pagina 10
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Pagina afdrukken5 Configuration and Operation
5.1
Configuration Switches
The OEM development board contains a DIP switch array that allows the user to route signals
between the USB to serial converter, RS232 converter and GPIO header. The configuration switches
are shown below in Illustration 4 in their default positions. The default position routes Spatial's
primary serial port to the USB to serial converter and has GPIO 3 and GPIO 4 connected only to the
GPIO header. Please see Table 1 for the configuration switch functions.
Switch
Default
1
Off
2
Off
3
Off
4
Off
Table 1: Configuration switch functions
5.1.1
Primary Serial Port to USB
Illustration 4: Configuration
switches in their default position
Power on RS232 transceiver.
When the RS232 transceiver is powered on GPIO 3 and 4 will be connected
to RS232 TX 2 and RS232 RX2 respectively. It will no longer be possible to
use GPIO 4 in a TTL level mode. The primary serial port TX will also be
connected to RS232 TX 1 but the primary serial port RX will only be
connected to RS232 RX 1 if switch 2 is turned on.
Connect primary serial port RX to RS232 transceiver (RS232 RX 1). Please
note that only one of the switches 2,3 or 4 should be turned on at once to
prevent short circuit.
Connect primary serial port RX to USB serial converter. Please note that
only one of the switches 2,3 or 4 should be turned on at once to prevent
short circuit.
Connect primary serial port RX to GPIO header (UART RX). Please note
that only one of the switches 2,3 or 4 should be turned on at once to prevent
short circuit.
Spatial OEM Development Kit Manual
Page 9 of 20
Version 3.0
Function