AVRPWM0SetDuty Function to Set Duty cycle of PWM Output generated by Timer0 at OC0 pin. duty : It holds an integer value from 0 to 100 which sets the percentage of time for which signal is active. Each Micro controller has PWM output pins which can generate varying voltage from 0V-5V.In this function by varying the duty cycle, varying voltage can be produced. This is curretly dummy function. It provides no functionality but is required for providing support for generating C code for AVR. AVRPWM0Setup Ashish Kamble