Add ability to debug the microcontroller

Makefile

@@ -65,6 +65,14 @@ assemble: compile $(OBJ_FILES)
 flash: $(BUILD_DIR)/$(TARGET).bin
 	st-flash --reset write $< 0x8000000
 
+.PHONY: gdb-server
+gdb-server:
+	sudo openocd -f stlink.cfg -f stm32f4x.cfg
+
+.PHONY: gdb-client
+gdb-client:
+	gdb --symbols $(BUILD_DIR)/$(TARGET).elf --init-eval-command="target extended-remote localhost:3333"
+
 .PHONY: clean
 clean:
 	rm -rf $(BUILD_DIR)