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#include "uart.h"
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#include <avr/io.h>
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#define BAUD_PRESCALE (((F_CPU/(BAUDRATE*8UL)))-1)
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void __attribute__ ((naked)) __attribute__ ((section (".init5"))) uart_init() {
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UCSR0A = (1<<U2X0);
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UCSR0C = (1<<UCSZ00) | (1<<UCSZ01); // 8N1
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UBRR0 = BAUD_PRESCALE;
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}
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