Add "ion.battery()" for obtain the current voltage of the battery

Ion.battery() return a float with the current battery voltage

TODO : Update the translation of the toolbox (only FR and EN currently)

python/port/genhdr/qstrdefs.in.h

@@ -323,6 +323,7 @@ Q(zip)
   // Ion QSTR
 Q(ion)
 Q(keydown)
+Q(battery)
 Q(KEY_LEFT)
 Q(KEY_UP)
 Q(KEY_DOWN)

python/port/mod/ion/modion.cpp

@@ -12,3 +12,7 @@ mp_obj_t modion_keyboard_keydown(mp_obj_t key_o) {
   micropython_port_interrupt_if_needed();
   return mp_obj_new_bool(state.keyDown(key));
 }
+
+mp_obj_t modion_battery() {
+  return mp_obj_new_float(Ion::Battery::voltage());
+}

python/port/mod/ion/modion.h

@@ -1,4 +1,5 @@
 #include <py/obj.h>
 
 mp_obj_t modion_keyboard_keydown(mp_obj_t key_o);
-extern const mp_obj_type_t file_type;
+mp_obj_t modion_battery();
+extern const mp_obj_type_t file_type;

python/port/mod/ion/modion_table.cpp

@@ -16,8 +16,14 @@ const mp_obj_fun_builtin_fixed_t modion_keyboard_keydown_obj = {
   {(mp_fun_0_t)modion_keyboard_keydown}
 };
 
+const mp_obj_fun_builtin_fixed_t modion_battery_obj = {
+  {&mp_type_fun_builtin_0},
+  {(mp_fun_0_t)modion_battery}
+};
+
 extern "C" const mp_rom_map_elem_t modion_module_globals_table[] = {
   { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_ion) },
+  { MP_ROM_QSTR(MP_QSTR_battery), MP_ROM_PTR(&modion_battery_obj) },
   { MP_ROM_QSTR(MP_QSTR_keydown), MP_ROM_PTR(&modion_keyboard_keydown_obj) },
   { MP_ROM_QSTR(MP_QSTR_KEY_LEFT), MP_OBJ_NEW_SMALL_INT(Ion::Keyboard::Key::Left) },
   { MP_ROM_QSTR(MP_QSTR_KEY_UP), MP_OBJ_NEW_SMALL_INT(Ion::Keyboard::Key::Up) },

python/port/mod/os/modos.cpp

@@ -111,5 +111,4 @@ mp_obj_t modos_listdir(void) {
   }
   
   return list;
-}
-
+}