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Well, at least it compiles now!

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XANTRONIX Development 2016-05-27 15:49:27 -05:00
parent c89e14d307
commit f2e913329b
3 changed files with 44 additions and 11 deletions
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33
avr/Makefile Normal file
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@ -0,0 +1,33 @@
include ../mk/build.mk
INCLUDE_PATH = ../include
HEADER_SUBDIR = tabby
CROSS = avr-
CC = $(CROSS)gcc
CFLAGS = $(CGFLAGS) -Wall -Os -mmcu=atmega32u4 -I$(INCLUDE_PATH)
LDFLAGS =
HEADERS_LOCAL =
HEADERS_BUILD = $(HEADERS_LOCAL) \
$(addprefix $(INCLUDE_PATH)/$(HEADER_SUBDIR)/,$(HEADERS))
NAME = tabby
HEADERS = avr/buffer.h avr/uart.h clock.h command.h link.h
OBJS = main.o uart.o
IMAGE_ELF = $(NAME).elf
RM = /bin/rm
all: $(IMAGE_ELF)
$(IMAGE_ELF): $(OBJS)
$(CC) $(CFLAGS) $(OBJS) -o $@
$(OBJS): %.o: %.c $(HEADERS_BUILD)
$(CC) $(CFLAGS) -c $<
clean:
$(RM) -f $(IMAGE_ELF) $(OBJS)

20
avr/uart.c
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@ -11,27 +11,27 @@
#include <util/setbaud.h>
void uart_init() {
UBRR0H = UBRRH_VALUE;
UBRR0L = UBRRL_VALUE;
UBRR1H = UBRRH_VALUE;
UBRR1L = UBRRL_VALUE;
#if USE_2X
UCSR0A |= _BV(U2X0);
UCSR1A |= _BV(U2X1);
#else
UCSR0A &= ~(_BV(U2X0));
UCSR1A &= ~(_BV(U2X1));
#endif
UCSR0C = _BV(UCSZ01) | _BV(UCSZ00);
UCSR0B = _BV(RXEN0) | _BV(TXEN0);
UCSR1C = _BV(UCSZ11) | _BV(UCSZ10);
UCSR1B = _BV(RXEN1) | _BV(TXEN1);
}
void uart_putchar(char c, FILE *fh) {
loop_until_bit_is_set(UCSR0A, UDRE0);
loop_until_bit_is_set(UCSR1A, UDRE1);
UDR0 = c;
UDR1 = c;
}
char uart_getchar(FILE *fh) {
loop_until_bit_is_set(UCSR0A, RXC0);
loop_until_bit_is_set(UCSR1A, RXC1);
return UDR0;
return UDR1;
}

2
include/tabby/avr/uart.h
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@ -1,7 +1,7 @@
#ifndef _TABBY_AVR_UART_H
#define _TABBY_AVR_UART_H
#define TABBY_AVR_UART_BAUD 115200
#define TABBY_AVR_UART_BAUD 57600
void uart_init();