$.$ After working through this process, you will need to address the following questions:

$$ What does pwmled$2$ set the PWM period to$?$

$$ Which PWM$\_$xxx$()$ function sets the PWM period?

$$ Which PWM$\_$xxx$()$ function sets the PWM duty cycle?

$$ What is the purpose of the while$(1)$ loop in pwmled$2?$

$$ What is the purpose of usleep$()$ in the while$(1)$ loop?