chore 📦: Update compiler settings and build rules

- This commit updates the compiler settings, object files, and build rules for the project.

Makefile

@@ -1,14 +1,24 @@
-CC = msp430-gcc
-CFLAGS = -Wall -Os
-LIBS = -lZStack -lhal
+# Compiler settings
+CC = msp430-gcc		# MSP430 compiler
+CFLAGS = -Wall -Os	# Enable all warnings, Optimize for size
+LDFLAGS =
+LIBS = -lZStack -lhal	# ZStack for Zigbee communication, lhal for Hardware Abstraction Layer library
 
 SRCS = main.c zigbee_comm.c sensors/bme280.c sensors/wind_vane.c sensors/rain_gauge.c sensors/anemometer.c
 HEADERS = main.h zigbee_comm.h sensors/bme280.h sensors/wind_vane.h sensors/rain_gauge.h sensors/anemometer.h config.h
+OBJS = $(SRCS:.c=.o)	# create a list of object files from the source files
 
-all: main
+all: main.elf
 
-main: $(SRCS) $(HEADERS)
-	$(CC) $(CFLAGS) $(SRCS) $(LIBS) -o main.elf
+main.elf: $(OBJS)
+    $(CC) $(LDFLAGS) $(OBJS) $(LIBS) -o $@
+
+%.o: %.c $(HEADERS)
+    $(CC) $(CFLAGS) -c $< -o $@
 
 clean:
-	rm -f main.elf
+    rm -f main.elf $(OBJS)
+
+# Optionally add a rule to flash your device (if applicable)
+# flash: $(EXEC)
+#   ./flash_tool $(EXEC)  # This is just a placeholder if needed