AT command interface works! The cause of the breakage was the same Nucleus API issue with NU_Create_Timer() which we encountered at the very beginning of this project with Riviera timers: the code in uartfax.c from TCS211 was passing 0 as the initial dummy value for the timer duration, and our FreeNucleus version doesn't like it. The fix is the same: pass 1 as the initial dummy value instead.

CC=	gcc
CFLAGS=	-O2
PROG=	tiffs
OBJS=	basics.o cat.o globals.o inode.o ls.o main.o object.o tree.o xtr.o
HDRS=	globals.h pathname.h struct.h types.h
INSTBIN=/usr/local/bin

all:	${PROG}

${PROG}:	${OBJS}
	${CC} -o $@ ${OBJS}

${OBJS}:	${HDRS}

install:	${PROG}
	mkdir -p ${INSTBIN}
	install -c ${PROG} ${INSTBIN}

clean:
	rm -f ${PROG} *.o *.out *errs