سلام دوستان
من میخام atmega 8 را به plc با ارتباط سریال rs485 وصل کنم اینم
اما هرکاری میکنم به مشکل می خورم
اینم برنامم
من میخام atmega 8 را به plc با ارتباط سریال rs485 وصل کنم اینم
اما هرکاری میکنم به مشکل می خورم
اینم برنامم
کد:
#include <mega8.h>
#include <delay.h>
#include <stdlib.h>
int f=3;
// External Interrupt 0 service routine
interrupt [EXT_INT0] void ext_int0_isr(void)
{delay_ms(300);
f=f+1;
// Place your code here
}
#ifndef RXB8
#define RXB8 1
#endif
#ifndef TXB8
#define TXB8 0
#endif
#ifndef UPE
#define UPE 2
#endif
#ifndef DOR
#define DOR 3
#endif
#ifndef FE
#define FE 4
#endif
#ifndef UDRE
#define UDRE 5
#endif
#ifndef RXC
#define RXC 7
#endif
#define FRAMING_ERROR (1<<FE)
#define PARITY_ERROR (1<<UPE)
#define DATA_OVERRUN (1<<DOR)
#define DATA_REGISTER_EMPTY (1<<UDRE)
#define RX_COMPLETE (1<<RXC)
// Write a character to the USART Transmitter
#ifndef _DEBUG_TERMINAL_IO_
#define _ALTERNATE_PUTCHAR_
#pragma used+
void putchar(char c)
{
while ((UCSRA & DATA_REGISTER_EMPTY)==0);
UDR=c;
}
#pragma used-
#endif
// Standard Input/Output functions
#include <stdio.h>
// Declare your global variables here
void main(void)
{unsigned char str[32];
// Declare your local variables here
// Input/Output Ports initialization
// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0x00;
// Port C initialization
// Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x00;
// Port D initialization
// Func7=In Func6=In Func5=In Func4=Out Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=0 State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x10;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
TCCR0=0x00;
TCNT0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=0xFFFF
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;
// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=0xFF
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;
// External Interrupt(s) initialization
// INT0: On
// INT0 Mode: Falling Edge
// INT1: Off
GICR|=0x40;
MCUCR=0x02;
GIFR=0x40;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;
// USART initialization
// Communication Parameters: 7 Data, 1 Stop, Even Parity
// USART Receiver: Off
// USART Transmitter: On
// USART Mode: Sync. Master UCPOL=0
// USART Baud Rate: 9600
UCSRA=0x00;
UCSRB=0x08;
UCSRC=0xE4;
UBRRH=0x01;
UBRRL=0xA0;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;
// ADC initialization
// ADC disabled
ADCSRA=0x00;
// SPI initialization
// SPI disabled
SPCR=0x00;
// TWI initialization
// TWI disabled
TWCR=0x00;
// Global enable interrupts
#asm("sei")
while (1)
{delay_ms(500);
itoa(f,str);
printf("%s",str);
// Place your code here
}
}
دیدگاه