Point Grey Flea3 GigE - Serial Communication; Debouncer

Point Grey Flea3 GigE Technical Reference 6 Input/Output Control
6.6 Serial Communication
The camera is capable of serial communications at baud rates up to 115.2 Kbps via the on-board serial port built into the
camera’s GPIO connector. The serial port uses TTL digital logic levels. If RS signal levels are required, a level converter
must be used to convert the TTL digital logic levels to RS voltage levels.
Title Article
Configuring and testing the RS-232 serial port Knowledge Base Article 151
Related Knowledge Base Articles
SIO Buffers
Both the transmit and receive buffers are implemented as circular buffers that may exceed the 255 byte maximum.
n The transmit buffer size is 512 B.
n The receive buffer size is 8 KB.
Block reads and writes are both supported. Neither their length nor their address have to be 32-bit aligned or divisible
by 4.
6.7 Debouncer
By default, Point Grey cameras will reject a trigger signal that has a pulse width of less than 16 ticks of the pixel clock.
With the debouncer the user can define a debounce value. Once the debouncer is enabled and defined, the camera
will reject a trigger signal with a pulse width less than the defined debounce value.
It is recommended to set the debounce value slightly higher than longest expected duration of an invalid signal to
compensate for the quality of the input clock signal.
The debouncer is available on GPIOinput pins. For the debouncer to take effect, the associated GPIOpin must be in
Input mode (GPIOMode 0). The debouncer works in all trigger modes, except trigger mode 3 Skip Frames.
Each GPIO has its own input delay time. The debouncer time adds additional delay
to the signal on the pin.
Revised 10/29/2013
Copyright ©2010-2013 Point Grey Research Inc.
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