Gpio Interface; Consumer Electronics Control (Cec) Interface - Lightware MMX8x4-HT420M User Manual

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5. Device Concept
5.9. GPIO Interface

DIFFERENCE: The MMX8x4-HT420M and MMX8x8-HDMI-4K-A-USB20 models have GPIO connector.
The GPIO (General Purpose Input/Output) port is a multifunctional input/output interface to control the matrix
or third-party devices and peripherals. You can establish connection between the controller/ controllable
device and the matrix by the 8-pole Phoenix connector. Six pin's direction is configurable independently
based on needs of the application.
GPIO Options - Example
The Concept
Motorized curtain is pulled back by Relay box when signal received from the PC over the HDMI input. Relay box
is controlled by the GPIO port.
Settings
Step 1. Create an event in Event manager: when signal is present on Input 5 (I5) then set GPIO pins to low
level for Relay box opening.
Step 2. Also create another event when signal is not present on Input 5 (I5) then set GPIO pins to high level
for Relay box closing.
When the PC starts to play the video presentation, the signal is received over the HDMI input so GPIO pins
send signal to Relay box to open which results pulling back the curtains.
When the presentation is ended, signal ceases on the HDMI input, so GPIO pins send signal to Relay box to
close which results drawing the curtains
ATTENTION!
Please always check the electrical parameters of the devices what you want to control. The
maximum current of one GPIO pin is 30 mA, the maximum total current for the seven pins is 180 mA.
See the LDC settings for GPIO port in the
Manager settings in the Macros section.
USB Switch Tab section. See also the details about the Event
Applied firmware package: v1.3.0 | LDC software: v2.4.2
MMX8x4-HT series – User's Manual
5.10. Consumer Electronics Control (CEC) Interface
DIFFERENCE:
Below mentioned features are available from firmware v1.1.0.
The CEC is a bi-directional communication, defined in the HDMI standard. This feature is for remote control
the source and sink devices in an A/V system.
The matrix switcher is able to send and receive CEC commands, from the input ports towards the source,
and from outputs port towards the sink. For more information about sending CEC messages, see the
Tool section.
CEC has a dedicated pin in the HDMI connector. DVI connector does not contain this pin, so the CEC
transmission is broken when HDMI-DVI connector or adapter is in the signal route.
CEC Application Example
When active signal is detected on HDMI in, the switcher sends a CEC message automatically to the HDTV to
wake up.
Create an event in the event manager:
▪ Set a condition, if signal is present on the input port (I1),
▪ Set an action to send a CEC command 'Image view' on the output port (O1).
See the details about the Event Manager settings in the
50
CEC
Event Manager section.