leson2._c

rewtr y vruutuyukyuj

#include  <io2313v.h>
#include  <macros.h>
#define  uint   unsigned int 
#define  uchar  unsigned char
//#define LED_SET     PORTD |= (1 << PD5)            //位置高
//#define LED_CLR     PORTD &= ~(1 << PD5)           //位置低
//#define LED_COM     PORTD ^= (1 << PD5)            //位取反
//#define LED_R       PIND & (1 << PD5)              //位读取


void WDT_off(void)
{
//__disable_interrupt();
//__watchdog_reset();
//#asm("cli");
SREG &= ~(1 << (SREG&0x80));
// Clear WDRF in MCUSR 
MCUSR &= ~(1<<(MCUSR&0x08));
// Write logical one to WDCE and WDE
// Keep old prescaler setting to prevent unintentional time-out
WDTCSR |= (1<<(WDTCSR&0x10)) | (1<<(WDTCSR&0x08)WDE);
// Turn off WDT 
WDTCSR = 0x00;
SREG |= (1 << (SREG&0x80));
//#asm("sei");
//__enable_interrupt();
}    

void USART_Init(unsigned int  baud)
{
/* Set baud rate */
UBRRH = (unsigned char)(baud>>8);
UBRRL = (unsigned char)baud;
/* Enable receiver and transmitter */
UCSRB = (1<<(UCSRB&0x10))|(1<<(UCSRB&0x08));
/* Set frame format: 8data, 2stop bit */
UCSRC = (1<<(UCSRC&0x08))|(3<<(UCSRC&0x02));
//U2X=0;
}


void USART_Transmit( unsigned char data )
{
/* Wait for empty transmit buffer */
while ( !( UCSRA & (1<<(UCSRA&0x20))) );
/* Put data into buffer, sends the data */
UDR = data;		 		 	   	   		  			 //Transmit 8  data  bits
}

/*
void USART_Transmit( unsigned int data )
{
//Wait for empty transmit buffer 
while (!( UCSRA & (1<<UDRE)));
// Copy 9th bit to TXB8 
UCSRB &= ~(1<<TXB8);
if ( data & 0x0100 )
UCSRB |= (1<<TXB8);
// Put data into buffer, sends the data 
UDR = data;		 		 	   	   		  			//Transmit 9  data  bits
}
*/


unsigned char USART_Receive( void )
{
// Wait for data to be received 
while ( !(UCSRA & (1<<(UCSRA&0x80))) );
//Get and return received data from buffer 
return UDR;		 		  	   			   			//Receive  8  data  bits
}

/*
unsigned int USART_Receive( void )
{
unsigned char status, resh, resl;
// Wait for data to be received 
while ( !(UCSRA & (1<<RXC)) );
// Get status and 9th bit, then data 
// from buffer 
status = UCSRA;
resh = UCSRB;
resl = UDR;
// If error, return -1 
if ( status & (1<<FE)|(1<<DOR)|(1<<UPE) )
return -1;
// Filter the 9th bit, then return 
resh = (resh >> 1) & 0x01;
return ((resh << 8) | resl);	   		//Receive   9 data bits
}
*/

void  delay(uint ms)
{
uint i,j;
for(i=0;i<ms;i++)
  {
  for(j=0;j<1141;j++);
  }
}

void  senddata(uint data)
{
uchar i;
for(i=0;i<15;i++)
{
PORTD&=~(1<<(PORTD&0x10));	
NOP();
if(data&0x8000)
PORTD|=(1<<(PORTD&0x20)); 	 	  					//置位操作
else	
PORTD&=~(1<<(PORTD&0x20));									//清零操作

PORTD|=(1<<(PORTD&0x10));
NOP();
data=data<<1;
}		 		   	 	  				
PORTD|=(1<<(PORTD&0x08));
NOP();
NOP();
NOP();
PORTD&=~(1<<(PORTD&0x08));


//PORTD|=(1<<PORTD5);		 		   	 	  					//置位操作
//PORTD&=~(1<<PORTD5);		 	   	 		   			  		//清零操作
}

void main() 
{
uchar i;
uint  j=0x0001;
uint  k=0x7fff;

DDRD=0x38;

WDT_off();
USART_Init(9600);

while(1)
{      
        
 		USART_Transmit(0x55);
		
		for(i=0;i<15;i++)
		{
		senddata(j);
		delay(200);
		j=j<<1;
		j=j+1;
		}
		
		for(i=0;i<15;i++)
		{
		senddata(k);
		delay(200);
		k=k>>1;
		}


}


}