1. (15) Write a small C program for the Tiva Launchpad that:

(a) Configures Port D as all digital inputs

(b) Should generate a flag when any kind of change appears on the pins (rising or falling edges)

(c) Counts the number of pins on Port D that currently have a 1 as the input

(d) Saves that value to a variable called numOnes

(e) Performs these operations forever (except the initializations; these should only be performed once)

You may use either the DRA method or the TivaWare functions, whichever makes more sense to you