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标题: 新手刚学XS128单片机，弄了个PIT程序，为什么就进入不了PIT程序呢？ [打印本页]

作者: 网络延迟 时间: 2013-9-14 16:27
标题: 新手刚学XS128单片机，弄了个PIT程序，为什么就进入不了PIT程序呢？
#include <hidef.h>    /* common defines and macros */
#include "derivative.h"    /* derivative-specific definitions */
#define LED PORTB
#define LED_dir DDRB
#define  BUS_CLOCK    32000000    //总线频率
#define  OSC_CLOCK    16000000    //晶振频率
#define LEDCPU PORTK_PK4
#define LEDCPU_dir DDRK_DDRK4
unsigned char data=0x01;
unsigned int cycle=0;
/*************************************************************/
/*                   初始化锁相环                      */
/*************************************************************/
void INIT_PLL(void)
{
CLKSEL &= 0x7f;    //set OSCCLK as sysclk
PLLCTL &= 0x8F;    //Disable PLL circuit
CRGINT &= 0xDF;

#if(BUS_CLOCK == 40000000)
   SYNR = 0x44;
#elif(BUS_CLOCK == 32000000)
   SYNR = 0x43;
#elif(BUS_CLOCK == 24000000)
   SYNR = 0x42;
#endif

REFDV = 0x81;       //PLLCLK=2×OSCCLK×(SYNDIV+1)/(REFDIV+1)＝64MHz ,fbus=32M
PLLCTL =PLLCTL|0x70;  //Enable PLL circuit
asm NOP;
asm NOP;
while(!(CRGFLG&0x08)); //PLLCLK is Locked already
CLKSEL |= 0x80;       //set PLLCLK as sysclk
}

/*************************************************************/
/*                   PIT模块初始化函数                   */
/*************************************************************/
void init_PIT(){
PITMTLD0=249;    //为0通道8位计数器赋值
PITLD0=63999;    //为0通道16位计数器赋值 //(249+1)*(63999+1)=16000000个总线周期=0.5秒
PITMUX_PMUX0=0; //第0通道使用微计数器0
PITCE_PCE0=1;
PITINTE_PINTE0=1;
PITCFLMT=0x80; //使能周期中断定时器
}
#pragma CODE_SEG __NEAR_SEG NON_BANKED
interrupt void PIT_INTER(void)
{
  if(PITTF_PTF0 == 1)
PITTF_PTF0 = 1; //清除标志位
  cycle+=1;
  if(cycle==2)
  {
   cycle=0;
   data=data<<1;
   if(data==0)
      data=0x01;
   LED = ~data;

  }

}
#pragma CODE_SEG DEFAULT

/*************************************************************/
/*                      主函数                         */
/*************************************************************/
void main(void) {
DisableInterrupts;
LED_dir=0xff;    //设置为输出
LED=~data;
INIT_PLL();
EnableInterrupts;
init_PIT();
for(;;)
  {
  }
}

作者: qinlu123 时间: 2013-9-14 17:05
写上中断号试试。
//////////////////////////////PIT定时器初始化/////////////////////////////////////////////////////
void Pit0_Init(void)
{
  PITCFLMT_PITE=0; //disable PIT

//  PITCE_PCE0=1; //enable timer channel 0
//  PITCE_PCE1=1; //enable timer channel 1
//  PITCE_PCE2=1; //enable timer channel 2
  PITCE_PCE3=1; //enable timer channel 3

//  PITMUX_PMUX0=0; //ch0 connected to micro timer 0
//  PITMUX_PMUX1=0; //ch1 connected to micro timer 0
//  PITMUX_PMUX2=0; //ch2 connected to micro timer 0
  PITMUX_PMUX3=0; //ch3 connected to micro timer 0

  PITMTLD0=255 ; //micro time base 0 equals 255 clock cycles
  PITMTLD1=255 ; //micro time base 0 equals 255 clock cycles

//  PITLD0=0x61a8; //time-out period = (PITMTLD + 1) * (PITLD + 1) / fBUS.
//  PITLD1=1245; //time-out period = (PITMTLD + 1) * (PITLD + 1) / fBUS.
//  PITLD2=249; //time-out period = (PITMTLD + 1) * (PITLD + 1) / fBUS.
  PITLD3=249; //time-out period = (PITMTLD + 1) * (PITLD + 1) / fBUS.

//  PITINTE_PINTE0=1; //enable interupt channel 0
//  PITINTE_PINTE1=1; //enable interupt channel 1
//  PITINTE_PINTE2=1; //enable interupt channel 2
  PITINTE_PINTE3=1; //enable interupt channel 2

  PITCFLMT_PITE=1; //enable PIT
}
#pragma CODE_SEG __NEAR_SEG NON_BANKED
void interrupt 69 PIT3_ISR(void)
{
}
一共四个66-69.

作者: 网络延迟 时间: 2013-9-14 17:53

qinlu123 发表于 2013-9-14 17:05
写上中断号试试。
//////////////////////////////PIT定时器初始化///////////////////////////////////// ...

谢谢啊，原来是我没在project里面定义地址，找了高手帮我解决了

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