Added write BDT application (#170)

Co-authored-by: Steve Karg <skarg@users.sourceforge.net>

apps/writebdt/Makefile

@@ -0,0 +1,47 @@
+#Makefile to build BACnet Application for the GCC Port
+
+TARGET = bacwbdt
+# BACnet objects that are used with this app
+BACNET_OBJECT_DIR = $(BACNET_SRC_DIR)/bacnet/basic/object
+SRC = main.c \
+	$(BACNET_OBJECT_DIR)/client/device-client.c \
+	$(BACNET_OBJECT_DIR)/netport.c
+BACNET_BASIC_SRC += \
+	$(BACNET_SRC_DIR)/bacnet/basic/service/h_apdu.c \
+	$(BACNET_SRC_DIR)/bacnet/basic/service/h_iam.c \
+	$(BACNET_SRC_DIR)/bacnet/basic/service/h_noserv.c \
+	$(BACNET_SRC_DIR)/bacnet/basic/service/h_rp.c \
+	$(BACNET_SRC_DIR)/bacnet/basic/service/h_whois.c \
+	$(BACNET_SRC_DIR)/bacnet/basic/service/s_iam.c \
+	$(BACNET_SRC_DIR)/bacnet/basic/service/s_whois.c
+
+# TARGET_EXT is defined in apps/Makefile as .exe or nothing
+TARGET_BIN = ${TARGET}$(TARGET_EXT)
+
+SRCS = $(SRC) $(BACNET_SRC) $(BACNET_BASIC_SRC) $(BACNET_PORT_SRC)
+
+OBJS += ${SRCS:.c=.o}
+
+.PHONY: all
+all: Makefile ${TARGET_BIN}
+
+${TARGET_BIN}: ${OBJS}
+	${CC} ${PFLAGS} ${OBJS} ${LFLAGS} -o $@
+	size $@
+	cp $@ ../../bin
+
+.c.o:
+	${CC} -c ${CFLAGS} $*.c -o $@
+
+.PHONY: depend
+depend:
+	rm -f .depend
+	${CC} -MM ${CFLAGS} *.c >> .depend
+
+.PHONY: clean
+clean:
+	rm -f core ${TARGET_BIN} ${OBJS} $(TARGET).map
+
+.PHONY: include
+include: .depend
+