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=	arm-elf-gcc
CFLAGS=	-O2 -fno-builtin -mthumb-interwork -mthumb
LD=	arm-elf-ld

OBJS=	rtc_env.o rtc_functions.o rtc_handle_message.o rtc_process.o rtc_task.o

HDRS=	rtc_api.h rtc_config.h rtc_env.h rtc_i.h rtc_messages_i.h \
	rtc_pool_size.h

all:	xipcode.o

${OBJS}:	${HDRS}

xipcode.o:	${OBJS}
	${LD} -r -o $@ ${OBJS}

clean:
	rm -f *.[oa] *errs