Gpio Interface - Lightware MMX8x8-HDMI-4K-A User Manual


  
3. Product Overview
Application example of control mode
The concept
The System controller sends commands to the Matrix, which set the
video and audio properties. The Matrix executes the commands and
transmits the video signal to the sink.
Settings
The System controller can send LW2 or LW3 commands to the local
RS-232 port (P1 or P2) of the Matrix. In control mode, the commands
are processed in the device. This function makes possible to set the
crosspoint or a volume level etc.
Command injection mode
In this mode, the matrix works as an RS-232–Ethernet bidirectional
converter. The Ethernet packets are converted to RS-232 data and vice
versa. Unique TCP/IP port numbers are defined for the serial ports for
this purpose.
E.g. the default Command Injection port number of the local RS 232
port (P1) is 8001. If a command is coming from the LAN interface
which is address to the port no. 8001, it will be transmitted to the Tx
pin of the local RS-232 port. That also works in the opposite direction.
In MMX8x4-HT420M model, the method is the same on the serial
interface of the TPS port. Sending message from a remote TPS
device via TPS port to the RS-232 port of the matrix is also possible,
but connecting the Ethernet link to the TPS port with patch cables is
needed.
Application example of command injection mode
See the RS-232 settings in Factory Default Settings
LAN
MAIN MENU
LIVE > System Settings
POWER Output Ports Input Ports
Control USB
Multiport HDMI and TPS Matrix Switcher
MMX8x4-HT420M
System controller
The concept
The System controller can send commands (input/output switching,
control functions, etc.) to the matrix and is able to remote control the
HDTV via RS-232.
Settings
Matrix: The RS-232 interface of the TPS OUTPUT 1 (P4) is in Command
Injection (CI) mode. Set the further parameters (Baud rate, Data bits,
etc.) in accordance with the specifications of the television.
All settings are available in the LDC software, see
TTL Serial
The 2-pole Phoenix connector can be both infra or serial output.
For TTL data transmission the destination port numbers are 8003
and 8004. No setting required for configuring the interface, it works
automatically.
*Using a receiver with at least 1k impedance to any voltage between
0V and 5V to get the voltages.
3.8.4. GPIO Interface
INFO: Only the MMX8x4-HT420M model has GPIO connector.
The GPIO (General Purpose Input/Output) port is a multifunctional
input/output interface to control the transmitter or third-party devices
and peripherals. You can establish connection between the controller/
controllable device and the transmitter by the 8-pole Phoenix
connector. Six pin's direction is configurable independently based on
needs of the application.
section.
GPIO Options - Example
RS-232
MMX8x4-HT400MC
HD TV
PC
MMX8x4-HT series – User's Manual
RS-232 Tab
TTL* RS-232
Logic low level 0 .. 0.25V 3 V .. 15 V
Logic high level 4.75 .. 5.0V -15 V .. -3 V
Serial Output Voltage Levels (TTL and RS-232)
Motorized curtain
Relay box
GPIO
HDMI
TPS HDMI
MAIN MENU
MMX8x4-HT400MC
LIVE > System Settings
POWER Input Ports
Output Ports
USB
Control
Multiport HDMI and TPS Matrix Switcher
MMX8x4-HT420M TPS receiver
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
section.
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
the details about the Event Manager settings in the
section.
Projector
24
GPIO Tab section. See also
Event Manager