GPIO (I/O-22)

This topic describes how to configure and control the General Purpose Input Output (GPIO) hardware interface for the I/O-22 in Q-SYS Designer.

To see the GPIO interface, Example Applications, and Behavior During Boot-up and Redeploy, visit General Purpose Input Output (GPIO) Application.

Tip: For additional properties not listed, refer to the Properties Panel help topic for more information.

I/O-22 Properties

What you select in the Properties determines the use of that GPIO pin, unused, input, output, or clock.

GPIO Pin Selections

Digital Input (TTL 3.3 VDC @ 2 mA)

Digital Output

Sample Clock (GPIO 2 only)

Vector Clock (GPIO 3 only)

Frame Clock (GPIO 4 only)

The Controls are displayed in GPIO Pin number order, 1 through 8, from left to right in the Control Panel. For each control the DA-15 pin number is listed under the GPIO pin numbers. The GPIO pin numbers are always in order, but their grouping changes based on the selections in the Properties. The DA-15 pin numbers change based on the controls assigned to the GPIO pins.

Digital In (Indicator)

This LED lights when there is a Digital input of 1 (3.3 V TTL) present.

Digital Out

This toggle button supplies a 0 in the Off position and a 1 in the On position.

Clocks

The clock settings have no controls.

There is one control pin for each GPIO pin that has either Digital Input, or Digital Output selected in the Properties. The GPIO Pins that have Unused, or any of the clocks, do not have a Control Pin associated with it.

Pin Name

Value

String

Position

Pins Available

Digital Input

0

1

false

true

0

1

Output

Digital Output

0

1

false

true

0

1

Input / Output