fteeprom-{erase,prog}: detach logic: change to detach by default As it turns out, detaching all ttyUSB interfaces of a multichannel device does not require outside knowledge of how many channels there are, as in our previous -d option design that is being removed here - instead we can read the bNumInterfaces constant from the USB device's config descriptor and thus know how many interfaces there are in total. Based on this discovery, change the design of fteeprom-{erase,prog} as follows: * remove -d option; * flip the default to where we detach all interfaces by default; * add -n option to NOT detach any interfaces.

CC=	gcc
CFLAGS=	-O2
PROGDIR=cp2102 duart28 eeproms fteeprom
LIBDIR=	libftmini libuwrap
SUBDIR=	${PROGDIR} ${LIBDIR}

INSTALL_PREFIX=	/opt/freecalypso

all:	${SUBDIR}

cp2102:		libuwrap
duart28:	libftmini libuwrap
fteeprom:	libftmini libuwrap

${SUBDIR}: FRC
	cd $@; ${MAKE} ${MFLAGS} CC=${CC} CFLAGS="${CFLAGS}"

clean: FRC
	rm -f a.out core errs
	for i in ${SUBDIR}; do (cd $$i; ${MAKE} ${MFLAGS} clean); done

install: FRC
	mkdir -p ${INSTALL_PREFIX}
	for i in ${PROGDIR}; do (cd $$i; ${MAKE} ${MFLAGS} \
		INSTALL_PREFIX=${INSTALL_PREFIX} install); done

FRC: