#include "LF2407.H"
void PWMInit();
void SystemInit();
main()
{SystemInit();
 PWMInit();
 while(1)
 {;}
}
void SystemInit()
{   asm(" SETC	INTM ");	/* 關(guān)閉總中斷 */
	asm(" CLRC  SXM  ");	/* 禁止符號位擴展 */ 
	asm(" CLRC  CNF  ");    /* B0塊映射為 on-chip DARAM*/
	asm(" CLRC  OVM  ");    /* 累加器結(jié)果正常溢出*/
    *SCSR1=0x02FC;          /* 系統(tǒng)時鐘CLKOUT=20*2=40M */
	*WDCR=0x006F;			/* 禁止看門狗,看門狗時鐘64分頻 */ 
    *IFR=0xFFFF;				/* 清除中斷標(biāo)志 */
    *IMR=0x0000;				/* 打開中斷2*/    
    WSGR=0X00;
    
}
void PWMInit()
{*MCRA=*MCRA|0x0FC0;//設(shè)置I/O口寄存器，使能PWM輸出口
 *T1PER=2000;//PWM波周期為50uS;
 *ACTRA=0x0AAA;
 //*DBTCONA=0x02F4;//死區(qū)1.6uS,32預(yù)分頻，死區(qū)定時器周期為2，它是減計數(shù)
 *CMPR1=1500;//PWM波占空比為50%
 *CMPR2=1500;
 *CMPR3=1500;
 *COMCONA=0x8200;
 *T1CNT=0;
 *T1CON=0x884C;           //增模式, TPS系數(shù)40M/16=2.5M,T1使能,
}

void interrupt nothing()
{asm(" CLRC	INTM ");
return;
}