Chnaged the bath pf the battery firmware.

src/CMakeLists.txt

 # driver source files
 SET(sources battery_charger.cpp battery_charger_exceptions.cpp)
 # application header files
-SET(headers battery_charger.h battery_charger_exceptions.h ../../../stm32_code/include/dyn_battery.h)
+SET(headers battery_charger.h battery_charger_exceptions.h ../../battery_stm32_fw/include/dyn_battery.h)
 # locate the necessary dependencies
 FIND_PACKAGE(iriutils REQUIRED)
 FIND_PACKAGE(comm REQUIRED)

src/battery_charger.cpp

 #include "battery_charger.h"
-#include "../../../stm32_code/include/dyn_battery.h"
+#include "../../battery_stm32_fw/include/dyn_battery.h"
 #include "exceptions.h"
 #include "battery_charger_exceptions.h"
 #include <iostream>