做了个PH0口中断程序，可是进不了中断。请高人指点一下啊。
程序如下：
#include <hidef.h> /* common defines and macros */
#include <mc9s12dg128.h> /* derivative information */
#pragma LINK_INFO DERIVATIVE "mc9s12dg128b"
void PORTHInit(void) {
DDRH = 0XFE; //PORTH0输入
PPSH = 0X80; // 上升沿触发中断
PIEH = 0X01; //中断允许
}
#pragma CODE_SEG __NEAR_SEG NON_BANKED
void interrupt 6 PORTH_isr(void){
//DisableInterrupts;
PIEH = 0X00; //禁止再次产生中断
PIFH = 0X01; //清中断标志位
PORTB = 0xFF;
}
#pragma CODE_SEG DEFAULT
void main(void) {
PORTHInit();
EnableInterrupts;
DDRB = 0xFF;
PORTB = 0x00;
for(;;);
}
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