5. Software Control - Lightware Device Controller
MMX4x2 series – User's Manual
47
Applied firmware package: v1.6.0b19 | LDC software: v2.5.13b5
5.6.
CEC Tool
The device is able to send and receive Consumer Electronics Control (CEC) commands. This feature is for
remote control of the source or sink device. CEC is a bi-directional communication via the HDMI cable.
#cec
4
5
6
1
2
3
1
Drop-down
command list
Containing the basic CEC commands, most of them are displayed on the
graphical interface, too (on the left side). Click on the
Send
button to send the
command.
2
Custom command
textbox
The text field is for sending hexadecimal commands to the source. The
maximum allowed length is 30 characters (15 bytes). Click on the
Send
button
to send the command.
3
OSD string textbox
Unique text can be shown on the sink device up to 14 characters. The send
OSD (On-screen display) command textbox is the input field of the string.
Alphanumeric characters, glyphs and space are accepted. Click on the
Send
button to execute the command.
4
Received Command
box
Displays all the sent (in red) CEC commands and the received answers (in
blue) with a timestamp.
Legend of the received message:
< [10:33:17] ACK
Answer for the acknowledged command.
< [10:35:01] NACK
Answer for the not acknowledged command.
< [10:33:17] IN PROGRESS
The command is being processed.
< [10:33:17] FAILED
Answer for other failure.
< [10:35:40] feature_abort_<*>
This is the most common answer from the third-party devices when the
command is delivered, but the execution is refused. The cause of the refusal
stands after 'feature_abort' expression.
5
Clear button
Click on the
Clear
button to erase the content of the terminal window.
6
CEC command
button panel
This panel provides the quick and easy management of CEC commands.
These buttons are pre-programmed with basic functions and send
commands towards the sink. The communication is displayed in the
Received Command box. For the list of the commands, see the
section. Both the layout and functionality are similar to
the design of a remote control.
It can occur that the third-party device can receive, but not execute the command because it is not supported
by the product. Check the accepted commands in the documentation of the device.
INFO:
The first 2x2 bit of the CEC commands contains identification data of the source and destination
address. In this case that is always 40.
ATTENTION!
Make sure that the controlled unit is CEC-capable and this function is enabled.