Add skeleton for the radio mesh simulator

test/mesh/Makefile

@@ -0,0 +1,32 @@
+# Mesh simulator. `make` builds and runs an example
+ROOT = ../..
+SRCS = simulator.c l2_mesh.c l2_802154.c star.c $(ROOT)/mongoose.c
+HDRS = simulator.h l2_mesh.h l2_802154.h star.h $(ROOT)/mongoose.h
+WARN = -pedantic -W -Wall -Werror -Wshadow -Wdouble-promotion -fno-common \
+       -Wconversion -Wundef -Wmissing-prototypes -Wstrict-prototypes
+DEFS = -DMG_ENABLE_TCPIP=1 -DMG_ENABLE_TCPIP_DRIVER_INIT=0 -DMG_ENABLE_IPV6=0 \
+       -DMG_ENABLE_CUSTOM_MILLIS=1
+CFLAGS ?= -O2 -g0 $(WARN)
+X ?= 100
+Y ?= 100
+ROWS ?= 10
+COLS ?= 10
+
+# Nodes at every corner of a ROWS x COLS grid over X,Y, edges included
+GRID = $(shell for r in $$(seq 0 $(ROWS)); do \
+         for c in $$(seq 0 $(COLS)); do \
+         echo -node $$((c * $(X) / $(COLS))),$$((r * $(Y) / $(ROWS))); \
+         done; done)
+
+all: mesh_sim
+	./mesh_sim -area $(X),$(Y) \
+	  -bridge $$(($(X) / 2)),$$(($(Y) / 2)) \
+		$(GRID)
+
+mesh_sim: $(SRCS) $(HDRS) Makefile
+	$(CC) $(SRCS) $(CFLAGS) $(DEFS) -I. -I$(ROOT) -o $@
+
+clean:
+	rm -rf mesh_sim mesh_sim.dSYM
+
+.PHONY: all clean