awuahdarko/pic18f4550_pwm

A simple to use library for Pulse Width Modulation with PIC18F4550 MCU

PIC18F4550_PWM

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fb2b73cd4e6dcaabb8e2fa784a910bc07e21431b There are only two functions in this library

Functions*** void setupPWM(long PWM_Hz,T2PSS); This function sets up everything needed for the PWM signal, including Timers and Period of Oscillation.

void PWM1_Set_Duty(uint16_t dutycycle); This function is used to set the dutycycle of the PWM signal The value of "dutycyle" could be between 0 - 100%;

Definitions****** PWM_Hz is the desired frequency of the PWM signal

T2PSS is the prescaler for the timer2 module of the PIC18F microcontroller #PWM in the MCU uses the Timer2 peripheral of the MCU #The Presecale values of 1 , 4, 16 can be selected Use PS_1 for prescaler 1 Use PS_4 for prescaler 4 Use PS_16 for prescaler 16

NB: make sure you define _XTAL_FREQ for your oscillator frequency NB:make sure to set your CCP1 or CCP2 port as an output using the TRIS register