/* *File:			Pwm.c *Purpose:		Initialize the PWM(Pulse Width Modulation) Module
 * *Notes:		Assume that thers is a LED linked to the output pins		 */#define MCF5272_PWM_PWMCR1 (0x0C0)#define MCF5272_PWM_PWWD1 (0x0d0)#define MCF5272_MBAR      0x10000000#include <stdio.h>main(){		if( getchar() == '1')	{	 			//disable the pwm,and output is low 		*(volatile unsigned char *)(MCF5272_MBAR + MCF5272_PWM_PWMCR1) = 0x04;		usleep(2000000); 		//disable the pwm,and output is high			*(volatile unsigned char *)(MCF5272_MBAR + MCF5272_PWM_PWMCR1) = 0x24;	 	}else 	{	  	//enable the pwm,and output is half high		*(volatile unsigned char *)(MCF5272_MBAR + MCF5272_PWM_PWWD1) = 0x80;		*(volatile unsigned char *)(MCF5272_MBAR + MCF5272_PWM_PWMCR1) = 0xA0;		  	  	}	printf("OK\n");	}