1. Write a c18 program to control the speed of DC motor by using a PWM with Fpwm-20 kHz and Fosc=32 MHz. The reference speed comes from five pushbuttons where. [6 points] pushbutton Reference speed (% of rated speed) pb0 0 pb1 30% pb2 60% pb3 75% pb4 2. 100% Connect all the required hardware to PIC18F4550 3. Show the reference speed on LCD you can use the following datasheets ows ESTER 13-1: T2CON: TIMER2 CONTROL REGISTER [3 points] [1 points] REGISTER 15-1: CCPxCON: STANDARD CCP CONTROL SEAS