Hi,

Quartz am 90S2313 ist 4MHz. Angesteurt wird der von einem ATmega32 in C. Baudrate ist 9600.

Code:
#include <avr/io.h>
#include <stdio.h>
#include <string.h>
#include <avr/signal.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#include <avr/delay.h>
#include "lcd.h"
#include "main.h"
#include "pwm.h"
#include "texte.h"
#include "timer.h"

void print5(unsigned int x)
	{
  unsigned int y;
  		y=x/10000;lcd_putc(y+0x30);x-=(y*10000);
		y=x/1000;lcd_putc(y+0x30);x-=(y*1000);
		y=x/100;lcd_putc(y+0x30);x-=(y*100);
		y=x/10;lcd_putc(y+0x30);x-=(y*10);
		lcd_putc(x+0x30);
	}

void USART_transmit (unsigned char c) 
	{
 while(!(UCSRA & (1<<UDRE))); 
   UDR = c;
	}

	
int main(void)
	{
	UCSRA=0x00;
	UCSRB=0x18;
	UCSRC=0x86;
	UBRRH=0x00;
	UBRRL=0x67;
	unsigned int temp;	
	sei();
	for(;;)
		{
		USART_transmit(0x23);
		USART_transmit(0x53);
		USART_transmit(0x31);
		USART_transmit(1);
	_delay_ms(2000);
		USART_transmit(0x23);
		USART_transmit(0x53);
		USART_transmit(0x31);
		USART_transmit(255);
			_delay_ms(2000);
		}
	}