Matrix Vision mvBlueLYNX-X, Техническое руководство, Страница: 216 / 236

This will make the virtual keyboard useable!
21.4 Does the mvBlueLYNX have a hardware real-time
controller?
The mvBlueLYNX-X has timer/counters similar to those on the mvBlueCOUGAR-X. They can be accessed
via the GenICam property tree (see also SFNC).
Counters (part of chunk data) are used for counting events or external signals (compare number of
triggers vs. number of frames; overtrigger) and •
Timers can be used, for example,
for pulse width modulation (PWM) and ♦
to generate output signals of variable length, depending on conditions in camera.
♦
•
This achieves complete hardware real-time controller functionality which supports following applications:
frame rate by timer •
exposure by timer
•
pulse width at input •
21.5 Building the MATRIX VISION samples without Eclipse
If you want compile the MATRIX VISION samples in
/opt/mvimpact-acquire
, you have to use the
script
make_mvia.sh
. This script sets all needed variables correctly (comparable to the makefiles of
Eclipse).
Calling the script like this:
/opt/mvimpact-acquire/make_mvia armv7a
all samples will be built in this directory.
If you want to build single samples like Live Snap, just change the directory and call the make script:
cd /opt/mvimpact-acquire/apps/LiveSnap
. 1.
../../make_mvia armv7a
. 2.
21.6 My application does not work - How do I see more
debug messages?
To investigate problems with applications that use mvIMPACT-Acquire it is useful to be able to see
debugging messages. Turn these on by making use of the file
mvDebugFlags.mvd
. You will find an
example of this file at
/home/root/mvDebugFlags.mvd.EXAMPLE
which you can copy to the
directory where you start your application and rename appropriately e.g. if you start your application from the
directory
/home/root/myapp/
please execute the following commands:
cd /home/root/myapp
1.
cp /home/root/mvDebugFlags.mvd.EXAMPLE ./mvDebugFlags.mvd
2.
Now if you start your application from within this directory (in a terminal window) you will see many
debugging messages which may help you or MATRIX VISION support to solve the problem.
mvBlueLYNX-X Technical Manual
206 22 April 2016 Version - 1.49 MATRIX VISION GmbH