3-Wire Expander

Introduction

The 3-Wire Expander allows the V5 Brain to support more 3-Wire devices by adding 8 extra ports through a single Smart Port connection.

This page uses expander as the example 3-Wire Expander name. Replace it with your own configured name as needed.

Below is a list of available methods:

• index – Returns an integer based on the Smart Port the 3-Wire Expander is connected to.

Constructor – Manually initialize a 3-Wire Expander.

• Triport – Create a 3-Wire Expander.

index

index returns an integer based on the Smart Port that the 3-Wire Expander is connected to. For example, if the 3-Wire Expander is connected to Port 1, index will return a 1.

Usage:
expander.index()

Parameters	Description
	This method has no parameters.

Constructor

Constructors are used to manually create Triport objects, which are necessary for configuring a 3-Wire Expander outside of VEXcode.

Triport

Triport creates a 3-Wire Expander.

Usage:
Triport(smartport)

Parameter	Description
smartport	The Smart Port that the 3-Wire Expander is connected to, written as Ports.PORTx where x is the number of the port.

# Create a 3-Wire Expander in Port 10
expander = Triport(Ports.PORT10)

Each Triport object has 8 port attributes (a through h) that represent the ports on the 3-Wire Expander. These can be used in any other 3-Wire device’s constructor as an argument for the port parameter.

# Connect a Bumper Switch to the 3-Wire Expander
bumper_expanded_a = Bumper(expander.a)