pwm.h

NXP P89V51 PGA硬件生成 PWM 程序...

#ifndef __PWM_H__
#define __PWM_H____PWM_H__
#include <regx52.h>
#define	uchar unsigned char

#define PCA_VECTOR	6	/* 0x33 PCA Interrupt PCA中断向量*/

#define CCAPM_PWM	0x42; 	/*CCAPMn 模式设置 8位PWM值*/

#define CMOD_ECF	0x01;	/*PCA使能计数溢出中断*/


/*===================FUNCTIONS============================*/

void PWM_Init(uchar pw);

#define PWM_SetPW(PW)	CCAP0H = PW		/*设置脉宽--- 0~255 */
#define PWM_Stop()		CR = 0;
#define PWM_Run()		CR = 1;


//===========寄存器定义>>>  For P89V51RD2 Only=====================
sfr	CMOD	= 0xD9;			/*PCA计数器模式寄存器*/          
/*| CIDL | WDTE | --- | --- | --- | CPS1 | CPS1 | ECF |*/

sfr CCON	= 0xD8;			/*PCA计数器控制寄存器*/ 

sfr CCAPM0	= 0xDA;
sfr CCAPM1	= 0xDB;
sfr CCAPM2	= 0xDC;
sfr CCAPM3	= 0xDD;
sfr CCAPM4	= 0xDE;

sfr CCAP0H	= 0xFA;
sfr CCAP1H	= 0xFB;
sfr CCAP2H	= 0xFC;
sfr CCAP3H	= 0xFD;
sfr CCAP4H	= 0xFE;

sfr CCAP0L	= 0xEA;
sfr CCAP1L	= 0xEB;
sfr CCAP2L	= 0xEC;
sfr CCAP3L	= 0xED;
sfr CCAP4L	= 0xEE;

/*------------------------------------------------
CCON Bit Registers
------------------------------------------------*/
sbit CCF0	= 0xD8;			/*PCA模块0中断标志	*/
sbit CCF1	= 0xD9;			/*PCA模块1中断标志	*/
sbit CCF2	= 0xDA;			/*PCA模块2中断标志	*/
sbit CCF3	= 0xDB;			/*PCA模块3中断标志	*/
sbit CCF4	= 0xDC;			/*PCA模块4中断标志	*/
sbit CR		= 0xDE;			/*PCA计数器运行控制	*/
sbit CF		= 0xDF;			/*PCA计数器溢出标志	*/




#endif