portvariant.c

本人用AVR mega32写的一个关于输出32路PWM的程序

#define EXT_PORTVAL_GLOBALS
#include "includes.h"


/************************************************************
 Function Name:  T2Start
 Function:       Timer0 start
 Paramenter:     None               
 Return value:   None                     
 Author:         Chen yuan zhen May.30.2008 
*************************************************************/
void CloseOutputPwm(void)
{

	DDRA=0x00 ;
	DDRC=0x00 ;
	DDRD=0x00 ; 
	DDRF=0x00 ;
}
/************************************************************
 Function Name:  T2Start
 Function:       Timer0 start
 Paramenter:     None               
 Return value:   None                     
 Author:         Chen yuan zhen May.30.2008 
*************************************************************/
void TurnOnPwm(void)
{


	PORTA=0xff;
	PORTC=0xff;
	PORTD=0xff; 
	PORTF=0xff;
}
/************************************************************
 Function Name:  T2Start
 Function:       Timer0 start
 Paramenter:     None               
 Return value:   None                     
 Author:         Chen yuan zhen May.30.2008 
*************************************************************/
void ClrPwmPort(void)
{

	PORTA=0x00;
	PORTC=0x00;
	PORTD=0x00; 
	PORTF=0x00;

}