Gpio Port Configuration; Querying The Direction Of A Gpio Pin; Setting The Direction Of A Gpio Pin; Querying The Output Level Of A Gpio Pin - Lightware MMX4x2-HDMI User Manual

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7. LW3 Programmers' Reference
7.16. GPIO Port Configuration
DIFFERENCE:
This section refers to the MMX4x2-HDMI20-USB-L model only.
7.16.1. Querying the Direction of a GPIO Pin
Command and Response #gpio
ç GET·/MEDIA/GPIO/<port>.Direction
æ pw·/MEDIA/GPIO/<port>.Direction(<dir>)
Parameters
Parameter Parameter description
<dir> The direction of the GPIO pin.
Example
ç GET /MEDIA/GPIO/P1.Direction
æ pw /MEDIA/GPIO/P1.Direction=I
7.16.2. Setting the Direction of a GPIO Pin
Command and Response
ç SET·/MEDIA/GPIO/<port>.Direction(<dir>)
æ pw·/MEDIA/GPIO/<port>.Direction(<dir>)
Parameters
See the previous section.
Example
ç SET /MEDIA/GPIO/P1.Direction=I
æ pw /MEDIA/GPIO/P1.Direction=I
#new
Value Value description
input
I
output
O
Applied firmware package: v1.5.0b8 | LDC software: v2.3.0b1
MMX4x2 series – User's Manual
7.16.3. Querying the Output Level of a GPIO Pin
Command and Response
ç GET·/MEDIA/GPIO/<port>.Output
æ pw·/MEDIA/GPIO/<port>.Output(<value>)
Parameters
Parameter
<value> The output value of the GPIO pin.
Example
ç GET /MEDIA/GPIO/P1.Direction
æ pw /MEDIA/GPIO/P1.Direction=I
7.16.4. Setting the Output Level of a GPIO Pin
Command and Response
ç SET·/MEDIA/GPIO/<port>.Output(<value>)
æ pw·/MEDIA/GPIO/<port>.Output(<value>)
Parameters
See the previous section.
Example
ç SET /MEDIA/GPIO/P1.Direction=I
æ pw /MEDIA/GPIO/P1.Direction=I
7.16.5. Toggling the Level of a GPIO Pin
The output level can be changed from high to low and low to high by the command below.
Command and Response
ç CALL·/MEDIA/GPIO/<port>:toggle()
æ mO·/MEDIA/GPIO/<port>:toggle
Example
ç CALL /MEDIA/GPIO/P1:toggle()
æ mO /MEDIA/GPIO/P1:toggle
Parameter description Value Value description
H high level
L low level
101