Write a code that outputs a PWM signal with duty cycles of $25\%,50\%$ and $75\%$ respectively. View the PWM signalson the oscilloscope. Using msp$430$fr$5994$ and C code. Each duty cycle should be outputted to seperate pins in a while loop P$3\mathrm{.}1,$P$3\mathrm{.}2$P$3\mathrm{.}3.$