Isolate the bus frobbing parts and the delays into a separate header. This means the user only has to edit a single file to suit their situation and allows the code to work with active drive systems as well as passive pullups (ie 1 vs 2 IO pins)

#
# $Id$
#

PROG=	testavr
SRCS=	1wire.c testavr.c usb.c

MCU=	atmega32
PART=	m32
CFLAGS+=-O2 -g -Wall -Wunreachable-code
CFLAGS+=-DF_CPU=16000000
#CFLAGS+= -mcall-prologues -frename-registers -fstrict-aliasing -fnew-ra
.include "Makefile.avr"