#include <mega128.h>
#include <stdio.h>
#include <string.h>
#include <delay.h>
#include <stdlib.h>
#define RXB8 1
#define TXB8 0
#define UPE 2
#define OVR 3
#define FE 4
#define UDRE 5
#define RXC 7
#define FRAMING_ERROR (1<<FE)
#define PARITY_ERROR (1<<UPE)
#define DATA_OVERRUN (1<<OVR)
#define DATA_REGISTER_EMPTY
(1<<UDRE)
#define RX_COMPLETE (1<<RXC)
void DispalyNumber();
// USART0 Receiver buffer
#define RX_BUFFER_SIZE0 8
char rx_buffer0[RX_BUFFER_SIZE0];
unsigned char rx_wr_index0,rx_rd_index0,rx_counter0;
// This flag is set on USART0 Receiver
buffer overflow
bit rx_buffer_overflow0;
char rmCount;
int i,j;
char string[4];
// USART0 Receiver interrupt service
routine
#pragma savereg-
interrupt [USART0_RXC] void uart0_rx_isr(void)
{
char status,data;
#asm
push r26
push r27
push r30
push r31
in r26,sreg
push r26
#endasm
status=UCSR0A;
data=UDR0;
if(data == 0x02) {//Àü¼Û½ÃÀÛ Ç¥½Ã
rx_wr_index0
= 0;
rmCount
= 0;
}
if ((status & (FRAMING_ERROR | PARITY_ERROR
| DATA_OVERRUN))==0)
{
rx_buffer0[rx_wr_index0]=data;
if (++rx_wr_index0 == RX_BUFFER_SIZE0)
rx_wr_index0=0;
if (++rx_counter0 == RX_BUFFER_SIZE0)
{
rx_counter0=0;
rx_buffer_overflow0=1;
};
};
#asm
pop
r26
out
sreg,r26
pop
r31
pop
r30
pop
r27
pop
r26
#endasm
if(rx_buffer0[0]==0x02
&& rmCount==5) {
//ÃʱâÈ
for(i=0;i<4;i++)
string[i]=0x00;
j=0;
for(i=0;i<4;i++)
if(rx_buffer0[i+1]!=0x20)
string[j++]=rx_buffer0[i+1];
DispalyNumber();
}
rmCount++;
}
#pragma savereg+
#ifndef _DEBUG_TERMINAL_IO_
// Get a character from the USART0
Receiver buffer
#define _ALTERNATE_GETCHAR_
#pragma used+
char getchar(void)
{
char data;
while (rx_counter0==0);
data=rx_buffer0[rx_rd_index0];
if (++rx_rd_index0 == RX_BUFFER_SIZE0)
rx_rd_index0=0;
#asm("cli")
--rx_counter0;
#asm("sei")
return data;
}
#pragma used-
#endif
// Standard Input/Output functions
#include <stdio.h>
// Declare your global variables here
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Func0=Out Func1=Out Func2=Out Func3=Out
Func4=Out Func5=Out Func6=Out Func7=Out
// State0=0 State1=0 State2=0 State3=0
State4=0 State5=0 State6=0 State7=0
PORTA=0x00;
DDRA=0xFF;
// Port B initialization
// Func0=Out Func1=Out Func2=Out
Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out
// State0=0 State1=0 State2=0 State3=0
State4=0 State5=0 State6=0 State7=0
PORTB=0x00;
DDRB=0xFF;
// Port C initialization
// Func0=Out Func1=Out Func2=Out
Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out
// State0=0 State1=0 State2=0 State3=0
State4=0 State5=0 State6=0 State7=0
PORTC=0x00;
DDRC=0xFF;
// Port D initialization
// Func0=Out Func1=Out Func2=Out
Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out
// State0=0 State1=0 State2=0 State3=0
State4=0 State5=0 State6=0 State7=0
PORTD=0x00;
DDRD=0xFF;
// Port E initialization
// Func0=In Func1=In Func2=In Func3=In
Func4=In Func5=In Func6=In Func7=In
// State0=T State1=T State2=T State3=T
State4=T State5=T State6=T State7=T
PORTE=0x00;
DDRE=0x00;
// Port F initialization
// Func0=Out Func1=Out Func2=Out
Func3=Out Func4=In Func5=In Func6=In Func7=In
// State0=0 State1=0 State2=0 State3=0
State4=T State5=T State6=T State7=T
PORTF=0x00;
DDRF=0x0F;
// Port G initialization
// Func0=In Func1=In Func2=In Func3=In
Func4=In
// State0=T State1=T State2=T State3=T
State4=T
PORTG=0x00;
DDRG=0x00;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0 output: Disconnected
ASSR=0x00;
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// OC1C output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;
OCR1CH=0x00;
OCR1CL=0x00;
// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer 2 Stopped
// Mode: Normal top=FFh
// OC2 output: Disconnected
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;
// Timer/Counter 3 initialization
// Clock source: System Clock
// Clock value: Timer 3 Stopped
// Mode: Normal top=FFFFh
// OC3A output: Discon.
// OC3B output: Discon.
// OC3C output: Discon.
TCCR3A=0x00;
TCCR3B=0x00;
TCNT3H=0x00;
TCNT3L=0x00;
OCR3AH=0x00;
OCR3AL=0x00;
OCR3BH=0x00;
OCR3BL=0x00;
OCR3CH=0x00;
OCR3CL=0x00;
// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
// INT3: Off
// INT4: Off
// INT5: Off
// INT6: Off
// INT7: Off
EICRA=0x00;
EICRB=0x00;
EIMSK=0x00;
// Timer(s)/Counter(s) Interrupt(s)
initialization
TIMSK=0x00;
ETIMSK=0x00;
// USART0 initialization
// Communication Parameters: 8 Data, 1
Stop, No Parity
// USART0 Receiver: On
// USART0 Transmitter: On
// USART0 Mode: Asynchronous
// USART0 Baud rate: 9600
UCSR0A=0x00;
UCSR0B=0x98;
UCSR0C=0x06;
UBRR0H=0x00;
UBRR0L=0x67;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by
Timer/Counter 1: Off
// Analog Comparator Output: Off
ACSR=0x80;
SFIOR=0x00;
// Global enable interrupts
#asm("sei")
PORTF=0x0f;
while (1)
{
// Place your code here
};
}
void DispalyNumber()
{
//Æ÷Æ® ÃʱâÈ
PORTA=0;
PORTB=0;
PORTC=0;
PORTD=0;
PORTA.4=1;
PORTA.5=1;
PORTA.6=1;
PORTB.4=1;
PORTB.5=0;
PORTB.6=1;
PORTC.4=1;
PORTC.5=0;
PORTC.6=1;
PORTD.4=1;
PORTD.5=0;
PORTD.6=1;
j=strlen(string);
i=0;
while(j>0) {
switch(i) {
case
0 :
PORTA=string[j-1];
break;
case
1 :
PORTB=string[j-1];
PORTB.5=1;
break;
case
2 :
PORTC=string[j-1];
PORTC.5=1;
break;
case
3 :
PORTD=string[j-1];
PORTD.5=1;
break;
}
j--;
i++;
}
}
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