main.c

LED显示练习

#include <hidef.h> /* for EnableInterrupts macro */
#include "derivative.h" /* include peripheral declarations */
//#define Debug_Display 
#include "main_asm.h" /* interface to the assembly module */
const unsigned char Led_Hc164[7]={0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,};
unsigned char Led_Seg[7];
void LedDisplay(unsigned char Led_Segment);
void MCU_init(void);
void main(void)
{
  unsigned char i;
  unsigned char j;
  EnableInterrupts; /* enable interrupts */
  /* include your code here */
  i=0;
  MCU_init();
  asm_main(); /* call the assembly function */
  Led_Seg[0]=0XC0;
  Led_Seg[1]=0XF9;
  Led_Seg[2]=0XA4;
  Led_Seg[3]=0XB0;
  Led_Seg[4]=0X99;
  Led_Seg[5]=0X92;
  Led_Seg[6]=0X82;
    __RESET_WATCHDOG(); /* feeds the dog */
    for (j=0; j<10; j++); //空循环
    for(;;) {
    LedDisplay(i);
    i++;
    if(i==7)
    i=0;
  } /* loop forever */
  /* please make sure that you never leave main */
}
void LedDisplay(unsigned char Led_Segment) 
{
 unsigned char i, data;
 
 
 
 PTB=0xFF;
 #ifdef Debug_Display
  PTD |=PTD_PTD0_MASK;
 #endif
  data=Led_Hc164[Led_Segment];
  for( i = 0; i < 7; i++)
   {
      asm 
      {
       rol data
       bcc led_0
       bset 1,PTD
       bra led_1
       led_0:
       bclr 1,PTD
       led_1:
       bclr 4,PTD
       bset 4,PTD
      }
   }
   PTB=Led_Seg[Led_Segment];
   #ifdef Debug_Display
      if(Led_Seg[Led_Segment]&PTB_PTB0_MASK) 
      {
        PTD|=PTD_PTD0_MASK;
      } 
      else
       {
       PTD&=~PTD_PTD0_MASK;
       }
   #endif
}
void MCU_init(void) 
{
  CONFIG1=0x00;
  CONFIG2=0x10;
  COPCTL=0xFF;
  SCC1=0x00;
  (void)(SCS1 == 0);
  (void)(SCS2 == 0);
  (void)(SCDR == 0);
  SCC3=0x00;
  SCBR=0x20;
  SCC1=0x5C;
  SCC2=0x2E;
  PTB=0xFF;
  DDRB=0xFF;
  PTA &=(unsigned char)~0xBC;
  DDRA |=(unsigned char)0xBC;
  #ifdef Degbug_Display
  PTD |=(unsigned char)0x13;
  DDRD |= (unsigned char)0x13;
  #else
  PTD |=(unsigned char)0x12;
  DDRD |=(unsigned char)0x12;
  #endif
}