mcu_demo.c

里面一工4个程序

/************************************************************************************
 *                                                                                  *
 *                                MCU_DEMO.C                                        *
 *                                                                                  *
 ************************************************************************************/

#include <reg51.h>
#include <stdio.h>

unsigned char code LED_Tab[16]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,
                          0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71};
unsigned char code LED_Tab1[16]={0x3f,0x06,0x9B,0x8F,0xA6,0xAD,0xBD,0x07,
                           0xBF,0xAF,0xB7,0xBC,0x39,0x9E,0xB9,0xB1};
sbit LED1_enable=P0^0;
sbit LED2_enable=P0^1;
sbit LED3_enable=P0^2;
sbit LED4_enable=P0^3;
sbit LED5_enable=P0^4;
sbit LED6_enable=P0^5;

#define LED_DATA  P1

sbit BEEP=P3^2;

sbit KEY1=P0^6;
sbit KEY2=P0^7;
sbit KEY3=P1^6;
sbit KEY4=P1^7;

#define DELAY_CONST 3000
#define DELAY_CONST2 10

void delay_ms(unsigned int n)
{
  unsigned int i,j;

  for (i=0;i<n;i++)
     for (j=0;j<10;j++)
	    {
		  j++;
		  j--;
		}
   
}

void beep_on(void)
{
  unsigned short i;

  for (i=0;i<100;i++)
  {
   BEEP=0;
   delay_ms(1);
   BEEP=1;
   delay_ms(1); 
    BEEP=0;
   delay_ms(2);
   BEEP=1;
   delay_ms(2); 
    BEEP=0;
   delay_ms(3);
   BEEP=1;
   delay_ms(3); 
    BEEP=0;
   delay_ms(4);
   BEEP=1;
   delay_ms(4); 
  }
  delay_ms(500);
}
void main(void)
{
  unsigned char i,j;
  unsigned char temp;

  //disable all LEDs
  LED1_enable=0;
  LED2_enable=0;
  LED3_enable=0;
  LED4_enable=0; 
  LED5_enable=0;
  LED6_enable=0;

  BEEP=1;
 
  for (i=0;i<9;i++)
      for (j=0;j<6;j++)
	      {
		    switch (j)
			 {
			   case 0: //LED1
			            LED1_enable=1;
			            break;
	           case 1: //LED2
			            LED2_enable=1;
			            break;
               case 2: //LED3
			            LED3_enable=1;
			            break;
			   case 3: //LED4
			            LED4_enable=1;
			            break;
			   case 4: //LED5
			            LED5_enable=1;
			            break;
			   case 5: //LED6
			            LED6_enable=1;
			            break;
			 }

             if (j!=1)
			    LED_DATA=LED_Tab[i];
             else
                LED_DATA=LED_Tab1[i];

             delay_ms(DELAY_CONST);
			 LED1_enable=0;
             LED2_enable=0;
             LED3_enable=0;
             LED4_enable=0; 
             LED5_enable=0;
             LED6_enable=0;
		  }

   P1=0xff;
   temp=P1;

   LED1_enable=1;
   while(1)
   {
     if (KEY4==0) //push key1
	    {
		  while(KEY4==0){};  
		  LED_DATA=LED_Tab[1];
          beep_on();
		  P1=0xff;
          temp=P1;
		}
      if (KEY3==0) //push key2
	    {
	  	  while(KEY3==0){};  
		  LED_DATA=LED_Tab[2];
		  beep_on();
          P1=0xff;
          temp=P1;
		}
	   if (KEY2==0) //push key3
	    {
	 	  while(KEY2==0){};  
		  LED_DATA=LED_Tab[3];
		  beep_on();
          P1=0xff;
          temp=P1;
		}
		
		if (KEY1==0) //push key4
	    {
	 	  while(KEY1==0){};  
		  LED_DATA=LED_Tab[4];
		  beep_on();
          P1=0xff;
          temp=P1;
		}
   } 

}