38 lines
885 B
C
38 lines
885 B
C
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/*
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* rs232.c
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*
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* Created: 06.10.2013 16:34:27
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* Author: netz
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*/
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#include "config.h"
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#include <stdio.h>
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#include <avr/io.h>
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#include "rs232.h"
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int uart_putchar(char c, FILE *stream);
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static FILE rs232 = FDEV_SETUP_STREAM(uart_putchar, NULL, _FDEV_SETUP_WRITE);
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int uart_putchar(char c, FILE *stream)
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{
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if (c == '\n') {
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uart_putchar('\r', stream); //Warten solange bis Zeichen gesendet wurde
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}
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loop_until_bit_is_set(UCSR1A, UDRE1); //Ausgabe des Zeichens
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UDR1 = c;
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return (0);
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}
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void init_rs232()
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{
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UCSR1C = (1 << UCSZ11) |(1 << UCSZ10); //8N1
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UCSR1B |= /*(1<<RXEN1) | (1<<RXCIE1) | */ (1<<TXEN1); //Enable TXEN im Register UCR TX-Data Enable
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UBRR1L = (F_CPU / (BAUD_RATE * 16L) - 1); //Teiler wird gesetzt
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stdout = &rs232; //<2F>ffnet einen Kanal f<>r printf (STDOUT)
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}
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void rs232_send(char * text) {
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fprintf(&rs232, text);
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}
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