XS128外部H7口J0口中断例程

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Code Warrior 5.0
Target : MC9S12XS128
Crystal: 16.000Mhz
busclock:16.000MHz
pllclock:32.000MHz   
 
使用说明：
H7,J0外部中断演示，分别亮灭PB0和PB2。
============================================*/
＃i nclude "derivative.h"
＃i nclude <stdio.h>
＃i nclude <string.h>  

#pragma CODE_SEG __NEAR_SEG NON_BANKED
void interrupt 24 PORTJ_ISR(void)
{        
  PORTB_PB0=~PORTB_PB0;
  PIFJ_PIFJ0=1;   //清除中断标志位
}
#pragma CODE_SEG __NEAR_SEG NON_BANKED
void interrupt 25 PORTH_ISR(void)
{
  PORTB_PB2=~PORTB_PB2;
  PIFH_PIFH7=1;   //清除中断标志位       
}
static void Port_Init(void)
{ 
    DDRA = 0xff;  //LCD1100,PA0--4,PA67 D1D2
    PORTA= 0x00;  
      
    DDRB = 0xff;  //LED  PTB0--7,
    PORTB= 0xff;  //LEDs on 
  
    DDRE = 0xFF;  //MOTOR CONTROL
    PORTE= 0x00;  //P     
   
    DDRH = 0x00; // PORTH input
    PTIH = 0X00; // KEY,PH0--5
    PERH = 0xff; // PORTH pull up 
    PPSH = 0x00; // Port H Polarity Select Register-falling edge
    PIEH = 0x80; // PORTH interrut disable,
                 // PH7判断奇偶场换场信号
   
    DDRJ = 0X00; // PJ0判断行同步脉冲到达
    //PPSJ = 0x01; // Port J Polarity Select Register-rising EDGE
    PPSJ = 0x00; // Port J Polarity Select Register-falling EDGE  
    PIEJ = 0X01; // VIDEO SYNC INTERRUPT DISABLED,BUT NOT IN MAIN()
    PERJ = 0xff;
   
    DDRM = 0XFF; // motor2的驱动模块MC33886的初始化子程序
    PTIM = 0X01; // EN:PM0=0,operating run;
    PERM = 0xff; // EN:PM0=1,full run;
   
    DDR1AD0=0xF8;
    PT1AD0 =0xFF;
}
void SetBusCLK_32M(void)
{  
    CLKSEL=0X00;    // disengage PLL to system
    PLLCTL_PLLON=1;   // turn on PLL
    SYNR =0x40 | 0x03;  // pllclock=2*osc*(1+SYNR)/(1+REFDV)=64MHz;                     
    REFDV=0xc0 | 0x01;
    POSTDIV=0x00; 
    _asm(nop);          // BUS CLOCK=32M
    _asm(nop);
    while(!(CRGFLG_LOCK==1));   //when pll is steady ,then use it;
    CLKSEL_PLLSEL =1;          //engage PLL to system; 
}
void Dly_ms(int ms)
{
   int ii,jj;
   if (ms<1) ms=1;
   for(ii=0;ii<ms;ii++)
     //for(jj=0;jj<1335;jj++);  //16MHz--1ms
     for(jj=0;jj<2770;jj++);  //32MHz--1ms
     //for(jj=0;jj<4006;jj++);  //48MHz--1ms
     //for(jj=0;jj<5341;jj++);    //64MHz--1ms 
}

//============================MAIN()===========================
void main(void)
{
  /* put your own code here */
  byte i=0;
 
  Port_Init();            // initial board
  SetBusCLK_32M(); 
  PORTB=0XFF;
  EnableInterrupts;
  for(;;)
  {
     Dly_ms(500);
     PORTB_PB1=~PORTB_PB1;
  }
  /* please make sure that you never leave this */
}
 
// ----------------------