The current linux kernel (3.14) requires one copy operation to transfer USB
data from the device to user-memory. On slower devices this leads to
significant cpu overhead. To overcome this issue Basler prepared a kernel patch,
which allows direct transfer of USB data to user memory (Zerocopy).
This patch is currently in experimental state and we will provide
patched kernel packages for selected distributions.
binaries and/or the patch if you would like to test zerocopy functionality.
Documentation
=============
The installation archive includes a "doc" sub-folder containing the
pylon Programmer's Guide and API reference documentation. Open the
index.html file with an internet browser.
Sample Programs
===============
The installation archive includes a set of sample programs. These sample
programs are simple command line programs showing the basic pylon use
cases. They are located in the "Samples" folder. The folder contains a
top-level Makefile that can be used to build the different sample programs.
Before calling "make" you must setup your environment for pylon to find the
necessary dependencies:
cd Samples
source <path to pylon>/bin/pylon-setup-env.sh <path to pylon>
make
Camera Emulator
===============
In addition to the GigE Vision transport layer, this release contains a
transport layer able to create simple camera emulator devices that allow you
to develop applications without having a physical camera device attached.
The emulator has very limited functionality, but is able to create test images
for different bit depths.
The number of available emulator devices can be controlled by exporting the
PYLON_CAMEMU environment variable. For example,
export PYLON_CAMEMU=2
will provide two emulator devices. These devices are accessible both by using
the pylon API and the pylon Viewer program.
When PYLON_CAMEMU is not set, no emulator devices are provided.
Troubleshooting
===============
GigE Devices
------------
* Problem: I can't see my camera in the pylon Viewer, even after waiting for
more than one minute. (Note: Depending on the camera's and adapter's
IP configuration it can take up to one minute until a valid IP address is
assigned to the camera.)
Solution: Start the Basler IP Configurator (/opt/pylon4/bin/IpConfigurator).
Is the camera shown by the IP Configurator?
If "yes", the camera's IP address is in a different subnet than the network
adapter's IP address. Both, the camera and the network adapter, must use IP
addresses within the same subnet. Refer to the INSTALL document for the IP
address setup.
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