added battery voltages tests in assembly tests

Author: Vincent-FK

funkey_prod_screens.h

@@ -3,6 +3,8 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <stdbool.h>
+#include <unistd.h>
 #include <SDL/SDL.h>
 #include <SDL/SDL_ttf.h>
 #include <SDL/SDL_image.h>