sh79f166a pwm模块初始化及应用

#ifndef _SH79F_PWM_H_#define _SH79F_PWM_H_//#include "sh79f_pwm.h"#define		PWM_DIVI 	PWM_DIVI2	//12M/2	= 6M#define		PWM_DIVI2	(0<<0) #define		PWM_DIVI4	(1<<0) #define		PWM_DIVI8	(2<<0) #define		PWM_DIVI16	(3<<0) //PWM频率值#define		V_PWMCYC		1500   //6M/1500=4K//PWM点空比 50%#define		V_PWM			1500/2 //#define		PWM_ENB		PWMEN1 &= ~0x01 ; //PWM 输出到IO#define		PWM_DIS		PWMEN1 |= 0x01 ; //PWM 禁止输出到IO//==============================extern void Init_Pwm(void);#endif//文件sh79f_pwm.c#include "global.h"#include "sh79f_pwm.h"//**************************************// 函数名称：Init_Pwm// 函数功能：PWM初始化// 入口参数：无 // 出口参数：无//***************************************void Init_Pwm(void){	PWMLO = 0x55;  //允许修改其它PWM寄存器的值	PWM0C = 0x00|PWM_DIVI ;	//12M/2=6M	PWM0PL = (uint8)(V_PWMCYC & 0X00FF) ; //PWM频率设置	PWM0PH = (uint8)(V_PWMCYC>>8) ;	PWM0DL = (uint8)(V_PWM & 0X00FF) ;	//PWM占空比设置	PWM0DH = (uint8)(V_PWM>>8) ;	PWM0DT = 0x00 ;  //死区时间	PWMEN = 0x01 ; //PWM模块使能 PWM0使能输出	PWMEN1 = 0x01 ; //PWM 不输出到IO		PWMLO = 0xAA ;  //禁止修改其它PWM寄存器的值}//应用实例void main(void){	//初始化PWM模块 频率为4K 占空比为50%	Init_Pwm() ;		while(1)	{		PWM_ENB ;	//PWM输出使能				Delay() ;		PWM_DIS ;	//PWM输出禁止		Delay() ;	}}