lcd.i

利用AVR单片机的定时器来进行灯的闪烁。一共有13种情况

// CodeVisionAVR C Compiler
// (C) 1998-2004 Pavel Haiduc, HP InfoTech S.R.L.

// I/O registers definitions for the ATmega64


#pragma used+
sfrb PINF=0;
sfrb PINE=1;
sfrb DDRE=2;
sfrb PORTE=3;
sfrb ADCL=4;
sfrb ADCH=5;
sfrw ADCW=4;      // 16 bit access
sfrb ADCSRA=6;
sfrb ADMUX=7;
sfrb ACSR=8;
sfrb UBRR0L=9;
sfrb UCSR0B=0xa;
sfrb UCSR0A=0xb;
sfrb UDR0=0xc;
sfrb SPCR=0xd;
sfrb SPSR=0xe;
sfrb SPDR=0xf;
sfrb PIND=0x10;
sfrb DDRD=0x11;
sfrb PORTD=0x12;
sfrb PINC=0x13;
sfrb DDRC=0x14;
sfrb PORTC=0x15;
sfrb PINB=0x16;
sfrb DDRB=0x17;
sfrb PORTB=0x18;
sfrb PINA=0x19;
sfrb DDRA=0x1a;
sfrb PORTA=0x1b;
sfrb EECR=0x1c;
sfrb EEDR=0x1d;
sfrb EEARL=0x1e;
sfrb EEARH=0x1f;
sfrw EEAR=0x1e;   // 16 bit access
sfrb SFIOR=0x20;
sfrb WDTCR=0x21;
sfrb OCDR=0x22;
sfrb OCR2=0x23;
sfrb TCNT2=0x24;
sfrb TCCR2=0x25;
sfrb ICR1L=0x26;
sfrb ICR1H=0x27;
sfrw ICR1=0x26;   // 16 bit access
sfrb OCR1BL=0x28;
sfrb OCR1BH=0x29;
sfrw OCR1B=0x28;  // 16 bit access
sfrb OCR1AL=0x2a;
sfrb OCR1AH=0x2b;
sfrw OCR1A=0x2a;  // 16 bit access
sfrb TCNT1L=0x2c;
sfrb TCNT1H=0x2d;
sfrw TCNT1=0x2c;  // 16 bit access
sfrb TCCR1B=0x2e;
sfrb TCCR1A=0x2f;
sfrb ASSR=0x30;
sfrb OCR0=0x31;
sfrb TCNT0=0x32;
sfrb TCCR0=0x33;
sfrb MCUCSR=0x34;
sfrb MCUCR=0x35;
sfrb TIFR=0x36;
sfrb TIMSK=0x37;
sfrb EIFR=0x38;
sfrb EIMSK=0x39;
sfrb EICRB=0x3a;
sfrb XDIV=0x3c;
sfrb SPL=0x3d;
sfrb SPH=0x3e;
sfrb SREG=0x3f;
#pragma used-


// Interrupt vectors definitions



volatile unsigned char lcd_count;  
volatile unsigned char lcd_type;
volatile unsigned char lcd_type1; 
volatile unsigned char PC_COMMAND;


void inittime2(void)
{
   TCCR2=0X0C;
   TCNT2=0X00;
   OCR2=144;
   TIMSK=0X80;
}
void initusart0(void)
{
    (*(unsigned char *) 0x95) =0x06;
    UBRR0L=0x07; 
    (*(unsigned char *) 0x90)=0x00;
    UCSR0A = 0x00;
    UCSR0B = 0x98;

}


interrupt[19] void usart_isr(void) //串口接收中断服务程序
{
	PC_COMMAND=UDR0;   

	switch(PC_COMMAND)
	{
		case '1':	//0x30 ASCII '0'
		        lcd_count=0;
			lcd_type=1;
			break;
		case '2':
		        lcd_count=0;
		        lcd_type=2;
			break;
		case '3':
		        lcd_count=0;
			lcd_type=3;
			break;
		case '4':
		        lcd_count=0;
		        lcd_type=4;
			break;  
	       case '5':
	       	        lcd_count=0;
			lcd_type=5;
			break;
		case '6':
		        lcd_count=0;
		        lcd_type=6;
			break;
		case '7':
		        lcd_count=0;
			lcd_type=7;
			break;
		case '8':
		        lcd_count=0;
		        lcd_type=8;
			break;  
		case '9':	//0x30 ASCII '0'
		        lcd_count=0;
			lcd_type=9;
			break;
		case '0': 
		        lcd_count=0;
		        lcd_type=10;
			break;
		case 'a':
		        lcd_count=0;
			lcd_type=11;
			break;
		case 'b':
		        lcd_count=0;
		        lcd_type=12;
			break; 
	        case 'c':
	                lcd_type=13;
	                lcd_count=0;
	                break;
	            
	}
}
interrupt [10]void timer2_comp_isr(void)
{
 if(lcd_count==20&&lcd_type==1)
   lcd_type1=1;
   if(lcd_count==40&&lcd_type==2) 
    lcd_type1=2;
 if(lcd_count==20&&lcd_type==3)
   lcd_type1=3;
 if(lcd_count==20&&lcd_type==4)
   lcd_type1=4;
 if(lcd_count==40&&lcd_type==5)
    lcd_type1=5;
 if(lcd_count==20&&lcd_type==6)
    lcd_type1=6;
 if(lcd_count==40&&lcd_type==7)
   lcd_type1=7;
 if(lcd_count==20&&lcd_type==8)
    lcd_type1=8;
 if(lcd_count==20&&lcd_type==9)
   lcd_type1=9;
 if(lcd_count==40&&lcd_type==10)
    lcd_type1=10;
  if(lcd_count==20&&lcd_type==11)
    lcd_type1=11;
  if(lcd_count==20&&lcd_type==12)
    lcd_type1=12;
   if(lcd_count==40&&lcd_type==13)
    lcd_type1=13;
  lcd_count++;
} 
void main(void)
{   
    PORTD.0  =1;  
    DDRB=0x60;				
    PORTB=0x40;	
    DDRE=0X10;
    DDRD=0XFF; //PORTB设置为输出
    inittime2(); 
    lcd_type=3;
    initusart0();
    #asm("sei")  //开全局中断   
    while(1)
    {
      if(lcd_type1==1)
      {
        PORTD.0  =0;
        PORTE.4     =0;
        lcd_count=0;
        lcd_type1=0;
      }
      if(lcd_type1==2)
      {
       PORTD.0  =~PORTD.0  ; 
       PORTE.4     =1;
       lcd_count=0;
       lcd_type1=0;
       }
       if(lcd_type1==3)
       {
        PORTD.0  =~PORTD.0  ;
        PORTE.4     =1;
        lcd_count=0; 
        lcd_type1=0;
      }
      if(lcd_type1==4)
        {
  PORTD.0  =0;
  PORTE.4     =1;
  lcd_count=0;  
  lcd_type1=0;
 }
 if(lcd_type1==5)
  {
  PORTD.0  =~PORTD.0  ;
  PORTE.4     =0;
  lcd_count=0;  
  lcd_type1=0;
 }
 if(lcd_type1==6)
   {
   PORTD.0  =~PORTD.0  ;
   PORTE.4     =0;
   lcd_count=0;
   lcd_type1=0;
 }
 if(lcd_type1==7)
 {
  PORTD.0  =1;
  PORTE.4     =~PORTE.4     ;
  lcd_count=0;
  lcd_type1=0;
 }
 if(lcd_type1==8)
 {
  PORTD.0  =1;
  PORTE.4     =~PORTE.4     ;
  lcd_count=0;
  lcd_type1=0;
 }
 if(lcd_type1==9)
  {
  PORTD.0  =1;
  PORTE.4     =0;
  lcd_count=0;
  lcd_type1=0;
  }
  if(lcd_type1==10)
   {
  PORTD.0  =0;
  PORTE.4     =~PORTE.4     ;
  lcd_count=0;
  lcd_type1=0;
  }
  if(lcd_type1==11)
  {
  PORTD.0  =0;
  PORTE.4     =~PORTE.4     ;
  lcd_count=0; 
  lcd_type1=0;
  }
  if(lcd_type1==12)
    {
   PORTD.0  =~PORTD.0  ;
   PORTE.4     =~PORTE.4     ;
   lcd_count=0;
   lcd_type1=0;
   }
   if(lcd_type1==13)
    {
    PORTD.0  =~PORTD.0  ;
    PORTE.4     =~PORTE.4     ;
    lcd_count=0;
    lcd_type1=0;
    }
        
}
}