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Update usart_printf.c

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This commit is contained in:
Patrick Servello
2015-02-01 14:08:29 +00:00
parent dd4b565f8e
commit b0b3d81a73
1 changed files with 2 additions and 8 deletions
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10
src/usart_printf/usart_printf.c
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@ -2,17 +2,13 @@
#include <avr/sfr_defs.h>
#include <stdio.h>
#define BAUD_RATE 9600
#define BAUD_RATE 9600
#define BAUD_PRESCALE (F_CPU/16/BAUD_RATE-1)
void usart_initialize(void) {
UBRR0H = (BAUD_PRESCALE >> 8);
UBRR0L = BAUD_PRESCALE;
//Enable receive and transmit
UCSR0B = (1<<RXEN0) | (1<<TXEN0);
// Set frame to 8 bits
UCSR0C = (1<<UCSZ01) | (1<<UCSZ00);
}
@ -22,11 +18,9 @@ void usart_send_byte(char byte, FILE *stream) {
}
loop_until_bit_is_set(UCSR0A,UDRE0);
UDR0 = byte;
}
char usart_get_byte(FILE *stream) {
loop_until_bit_is_set(UCSR0A, RXC0);
return UDR0;
}
}