CCS/MSP430FR4133: MSP430FR4133 launchpad

You'd have to configure pin 2.6 as an input and then define what happens when it's pressed.

One very basic example would be to set the LED high when the button is pressed.

A code example which showcases the functionality that Mike explains above is provided in the TI Resource Explorer ( msp430fr413x_P1_01.c ). 

The only change you would have to make in the code is to set the input to be Port 2 Pin 6 and not Port 1 Pin 3.

Best regards,

Matt