Brands:

• AMX
• BSS Audio

Models:

• AVX Architect

Overview:

This article will expand on the GPIO concepts covered in the Hardware Control Ports article and cover how to assign GPIO to various parameters within the Soundweb OMNI devices. 

To see a video of this article, click HERE.

Binding GP I/O to Logic:

This example uses the same GPI and GPO objects from the previous article. ​

Remember that this GPI is connected through a switch to the 5V output on the OMNI.

This example will illustrate how to use this switch to control a mute function in the processor.

Add a gain object into the workspace, then open the factory panel.

Enable selection mode using the selection mode button in the top right corner.

Drag the mute button directly into the workspace.

Notice that it has automatically created a Logic Binary object that has already been bound to the mute.

Once the GPI is tied into the new Logic object, the mute button will remain low as long as the incoming GPI is low.

Engaging the switch will put a High output on the GPI object because our incoming voltage is more than the On Threshold.

This will result in the mute becoming active as well.

This same concept could be used to control a gain parameter if a potentiometer is used. This creates a variable voltage coming in. Notice how adding the gain parameter provides a Logic Continuous object.

The only change required to make the new circuit work is to switch the GPI object to a Continuous Type and make sure that the Reference Voltage is the max voltage coming from the source. If using the 5V port on the back on the Omni device, this would be 5V.

This next example will use a gain control with the GPO. The GPO is configured with the type Logic Continuous, and a Max Voltage of 12V.

As before, put that panel in Selection Mode and drag the Fader on to the workspace.

Connect the output node of the Logic Continuous object to the node on the GPO.

Now open the GPO factory panel and see that moving the gain parameter will provide a variable voltage control signal as an output.

The GPO Factory panel will show the percentage compared to the max value and the current voltage level. This could be useful in the control of external devices.