//Timer0是用來計算高電平時間，Timer1是用來計算低電平時間


#include?“reg52.h“
#include?“math.h“

#define?PI?3.1415926
#define?POINT?50				//采樣點個數，個數越多越逼真，但是正弦頻率也越大
sbit?PWM=P2^0;					
void?setTimer（unsigned?int?value）;			//定時器時間設置

float?unit;
unsigned?char?uc;
unsigned?int?ipluse;


void??main（void）
{
	uc=0;
	PWM=1;
	TMOD=0x11;
	TL0=0;
	TH0=0;
	TR0=1;
	ET0=1;
	
	TL1=0;
	TH1=0;
	TR1=0;
	ET1=1;
	
	EA=1;
	unit=PI/POINT*2;
//??	f=sin（PI）;
	while（1）
	{
	}
}

void?setTimer（unsigned?int?value）			//定時器時間設置
{
	unsigned?int?inverse=0xffff-value;
	
		TL1=value;
		TH1=value>>8;
	
		TL0=inverse;
		TH0=inverse>>8;
	
	
}

void?timer0_int（）?interrupt?1
{
	EA=0;
	
	if（uc==POINT）				//判斷采樣周期是否結束，若是，從頭開始
	{
		uc=0;
	}
	ipluse=（unsigned?int）（（sin（unit*uc）+1）/2*65535）;			

?屬性????????????大小?????日期????時間???名稱
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?????文件???????1125??2013-03-20?10:32??sinPWM\keilPrj\main.c

?????文件???????3168??2013-03-20?10:32??sinPWM\keilPrj\main.LST

?????文件???????4836??2013-03-20?10:32??sinPWM\keilPrj\main.OBJ

?????文件???????6775??2013-03-20?10:32??sinPWM\keilPrj\sinPWM

?????文件???????4552??2013-03-20?10:32??sinPWM\keilPrj\sinPWM.hex

?????文件?????????58??2013-03-20?10:32??sinPWM\keilPrj\sinPWM.lnp

?????文件???????9895??2013-03-20?10:32??sinPWM\keilPrj\sinPWM.M51

?????文件?????138645??2013-03-22?18:22??sinPWM\keilPrj\sinPWM.uvgui.keetle

?????文件?????138624??2013-03-20?19:01??sinPWM\keilPrj\sinPWM.uvgui_keetle.bak

?????文件???????7531??2013-03-22?18:22??sinPWM\keilPrj\sinPWM.uvopt

?????文件??????13554??2013-03-19?22:16??sinPWM\keilPrj\sinPWM.uvproj

?????文件???????7531??2013-03-20?19:01??sinPWM\keilPrj\sinPWM_uvopt.bak

?????文件??????13549??2013-03-19?19:56??sinPWM\keilPrj\sinPWM_uvproj.bak

?????文件???????6376??2009-05-07?14:37??sinPWM\keilPrj\STARTUP.A51

?????文件??????14062??2013-03-20?10:32??sinPWM\keilPrj\STARTUP.LST

?????文件????????749??2013-03-20?10:32??sinPWM\keilPrj\STARTUP.OBJ

?????文件??????55294??2013-03-23?10:14??sinPWM\Proteus?DSO?Printing.pdf

?????文件??????63125??2013-03-23?10:12??sinPWM\proteusSim\sinPWM.DSN

?????文件????????766??2013-03-23?10:14??sinPWM\proteusSim\sinPWM.PWI

?????目錄??????????0??2013-03-23?10:11??sinPWM\keilPrj

?????目錄??????????0??2013-03-23?10:14??sinPWM\proteusSim

?????目錄??????????0??2013-03-23?10:14??sinPWM

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???????????????490215????????????????????22