Input/Output Control; General Purpose Input/Output (Gpio); Gpio Modes; Gpio Mode 0: Input - Point Grey Flea3 FL3-U3 Technical Reference Manual

Point Grey Flea3 USB 3.0 Technical Reference
4

Input/Output Control

4.1

General Purpose Input/Output (GPIO)

The camera has an 8-pin GPIO connector on the back of the case; refer to the diagram below for wire color-coding.
The connector is a Hirose HR25 8 pin connector (Mfg P/N: HR25-7TR-8SA). Male connectors (Mfg P/N: HR25-7TP-8P)
can be purchased from Digikey (P/N: HR702-ND).
Diagram
Power can be provided through the GPIO interface. The camera selects whichever power source is supplying a higher
voltage.
Point Grey sells a 12 V wall-mount power supply equipped with a HR25 8-pin GPIO wiring harness for connecting to
the camera (Part No. ACC-01-9006). For more information, see the
Point Grey website.
For details on GPIO circuits, see
4.2

GPIO Modes

4.2.1

GPIO Mode 0: Input

When a GPIO pin is put into GPIO Mode 0 it is configured to accept external trigger signals. See
on page 51.
4.2.2

GPIO Mode 1: Output

When a GPIO pin is put into GPIO Mode 1 it is configured to send output signals.
Revised 9/27/2012
Copyright ©2011-2012 Point Grey Research Inc.

Table 4.1: GPIO pin assignments (as shown looking at rear of camera)

Pin Function
1 I0
2 O1
3 IO2
4 IO3
5 GND
6 OPTO_GND
7 V
EXT
8 +3.3 V
GPIO Electrical Characteristics on page
Do not connect power to a pin configured as an output (effectively
connecting two outputs to each other). Doing so can cause damage to
camera electronics.
Description
Opto-isolated input (default Trigger in)
Opto-isolated output
Input/Output/serial transmit (TX)
Input/Output/serial receive (RX)
Ground for bi-directional IO, V
EXT
Ground for opto-isolated IO pins
Allows the camera to be powered externally
Power external circuitry up to 150 mA
miscellaneous product accessories page
59.
4 Input/Output Control
, +3.3 V pins
on the
Serial Communication
41