led-2gj.c

ＡＶＲ ＩＣＣ基于ＡＶＲ单片机的公交车显示程序！

#include <iom48v.h>
#include <macros.h>
#include <eeprom.h>

#define uchar unsigned char
#define unit unsigned int
#define ulong unsigned long



#define xtal 8 
#define fosc 8000000 //晶振8MHZ
#define baud 9600	 //波特率

#define a10 PORTC&=~0X01
#define a11 PORTC|=0X01

#define a20 PORTC&=~0X02
#define a21 PORTC|=0X02

#define a30 PORTC&=~0X04;
#define a31 PORTC|=0X04;

#define a40 PORTC&=~0X08;
#define a41 PORTC|=0X08;

#define Add     ((PINC&0X02)==0x02)
#define Sub     ((PINC&0X01)==0x01)


uchar n;
uchar shu[12]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf,0xff};
uchar tm[4]={0,0,0,0};



void port_init(void)
{
 PORTB = 0x00;
 DDRB  = 0xff;
 PORTC = 0x0f; //m103 output only
 DDRC  = 0x00;
 PORTD = 0x00;
 DDRD  = 0xff;
}

//Watchdog initialize
// prescale: 32K
void watchdog_init(void)
{
 WDR(); //this prevents a timout on enabling
 WDTCSR = 0x0e; //WATCHDOG ENABLED - dont forget to issue WDRs
}



//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();
 watchdog_init();

 MCUCR = 0x00;
 EICRA = 0x00; //extended ext ints
 EIMSK = 0x00;
 
 TIMSK0 = 0x00; //timer 0 interrupt sources
 TIMSK1 = 0x00; //timer 1 interrupt sources
 TIMSK2 = 0x00; //timer 2 interrupt sources
 
 PCMSK0 = 0x00; //pin change mask 0 
 PCMSK1 = 0x00; //pin change mask 1 
 PCMSK2 = 0x00; //pin change mask 2
 PCICR = 0x00; //pin change enable 
 PRR = 0x00; //power controller
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}



/*		微秒级延时程序		*/
void del(int time)
	 {     
  	  do
	  	{
		 time--;
		}	
  	  while (time>1);
	 }
	 
/*	   毫秒级延时程序   	*/	 
void delay_1ms(void)
{ unsigned int i1;
 for(i1=1;i1<(unsigned int)(xtal*143-2);i1++)
    ;
}

void delay(unsigned int n)
{
 unsigned int i2=0;
   while(i2<n)
   {delay_1ms();
    i2++; WDR();
   }
}

void scan(void)
{
if(!Add)
 {
 delay(100);
 if(!Add)
  {
  n++; 
  EEPROMwrite(1,n);
  tm[0]=n/10; if(tm[0]==0) tm[0]=11;  tm[1]=n%10;
  delay(200);
  }
 }
if(!Sub)
 {
 delay(100);
 if(!Sub)
  { 
    n--; if(n==255) n=0;
  EEPROMwrite(1,n);
  tm[0]=n/10; if(tm[0]==0) tm[0]=11;  tm[1]=n%10;
  delay(200);
  }
 }
 
}


void main(void)
{
uchar i;
delay(200);
OSCCAL=0x5b;
n=EEPROMread(1);
if(n==255) 
  { n=34;
  EEPROMwrite(1,n);
  }
init_devices();

tm[0]=n/10; if(tm[0]==0) tm[0]=11; tm[1]=n%10;

while(1)
{
scan();
PORTB=~shu[tm[0]];
PORTD=~shu[tm[1]];
delay(100);
}


}