#include <hidef.h>      /* common defines and macros */
#include  "INCLUDES.h"
#include  "main.h"      /* derivative information */
#pragma LINK_INFO DERIVATIVE "mc9s12xdp512"
void MCUInit(void);
void put_char (char c);
INT8U Digit2ASCII(INT8U src) ;
void main(void) {
  /* put your own code here */
  EnableInterrupts;
  OSInit();
  MCUInit();
  KeyInit();
  SCI0CR2=0x2c;//接收中断允许
  SCI0BD=0x009c;
  DDRB=0XFF;
  PORTB=0XFF;
  OSStart();
 
  /* please make sure that you never leave this function */
}



void MCUInit(void)
{

  asm sei
  REFDV=0x01;                 // initiate PLL clock  
  SYNR =0x02;                 // system clock 24M  
  while (!(CRGFLG & 0x08)){}  //CRGFLG的D3=1则稳定,并且可做为系统时钟 
  CLKSEL=0x80;                // 选定所相环时钟  
  asm cli 


}

void put_char (char c) {//发送数据是通过判断状态寄存器SCI0SR1的第7位（TDRE）
                   //接收数据是通过判断状态寄存器SCI0SR1的第5位（RDRF）
while((SCI0SR1 & 0X80)==0);//SCI0SR1的loops置0,正常模式,即当SCI0SR1.7=0时，等待
  SCI0DRL=c;// SCI0SR1.7=1时，发送数据将c一字节输入数据缓冲区SCI0DRL（先低后   //高）
  
}



INT8U Digit2ASCII(INT8U src)                    //Digit to ASCII
{
  return(src>=0x0A)?(src +'A'-0x0A):(src +'0');
}