mc9s12dg128使用定时器的输出比较产生定时中断代码亮1S灭1S

#include       /* common defines and macros */

#include      /* derivative information */

#pragma LINK_INFO DERIVATIVE "mc9s12dg128b"

unsigned int i;

void main(void)

 {

 DDRB=0XFF;//PORTBÉ趨ΪÊä³ö

 PORTB=0XFF;//PORTB³õʼ»¯ÎªÈ«¸ß

 TSCR1=0x90;//¶¨Ê±Æ÷ʹÄÜÇÒTFLG1Äܱ»×Ô¶¯Çå³ý

 TSCR2=0x00;//¶¨Ê±Æ÷Ô¤·ÖƵϵÊýÉ趨  Prescale Factor=0

 TIE=0x01;//¶¨Ê±Æ÷ͨµÀ0ʹÄÜ

 TIOS_IOS0=1;//¶¨Ê±Æ÷ͨµÀ0É趨ΪÊä³ö±È½Ï

  EnableInterrupts;//¿ªÖжÏ

  for(;;) {}; /* wait forever */

  /* please make sure that you never leave this function */

}

/*

***************************************************************************

*Óï·¨¸ñʽ:interrupt void Timer(void)

*ʵÏÖ¹¦ÄÜPORTBСµÆµÄÉÁ˸

*³ÌÐòÃèÊö:

**************************************************************************/

#pragma  CODE_SEG  __NEAR_SEG  NON_BANKED

void interrupt 8 Timer(void) //8Ϊ¶¨Ê±Æ÷ͨµÀ0µÄÖжϱêºÅ

{

 DisableInterrupts;  //¹ØÖжÏ

 TC0=TCNT+19360;//F = Fosc / (TC*128) ÖжÏƵÂÊÉ趨

 i++;

 if(i>=50)

 {

  i=0;

  PORTB=~PORTB;//PORTB×ÔÔö

 }

} 

#pragma CODE_SEG DEFAULT