Included Configuration.h to read the defined charsets.

Defined the charsets plus a default.

Marlin/language.h

 #ifndef LANGUAGE_H
 #define LANGUAGE_H
 
+#include "Configuration.h"
+
 #define LANGUAGE_CONCAT(M)       #M
 #define GENERATE_LANGUAGE_INCLUDE(M)  LANGUAGE_CONCAT(language_##M.h)
 
 
 // LCD Menu Messages
 
+#define STR_Ae "Ae" // no charset we know now. Will be overruled when we know.
+#define STR_ae "ae"
+#define STR_Oe "Oe"
+#define STR_oe "oe"
+#define STR_Ue "Ue"
+#define STR_ue "ue"
+#define STR_sz "ss"
+#define STR_Deg ""
+#define STR_THERMOMETER "\302"
+
+#ifdef DISPLAY_CHARSET_DOGM
+  #define STR_Ae "\304" // U8glib
+  #define STR_ae "\344"
+  #define STR_Oe "\326"
+  #define STR_oe STR_Oe
+  #define STR_Ue "\334"
+  #define STR_ue STR_Ue
+  #define STR_sz "\337"
+  #define STR_Deg "\260"
+  #define STR_THERMOMETER "\377"
+#endif
+#ifdef DISPLAY_CHARSET_HD44870_JAPAN // HD44870 ROM Code: A00 (Japan)
+  #define STR_ae "\xe1"
+  #define STR_Ae STR_ae
+  #define STR_oe "\357"
+  #define STR_Oe STR_oe
+  #define STR_ue "\365"
+  #define STR_Ue STR_ue
+  #define STR_sz "\342"
+  #define STR_Deg "\271"
+  #define STR_THERMOMETER "\302"
+#endif
+#ifdef DISPLAY_CHARSET_HD44870_WESTERN // HD44870 ROM Code: A02 (Western)
+  #define STR_Ae "\216"
+  #define STR_ae "\204"
+  #define STR_Oe "\211"
+  #define STR_oe "\204"
+  #define STR_Ue "\212"
+  #define STR_ue "\201"
+  #define STR_sz "\160"
+  #define STR_Deg "\337"
+  #define STR_THERMOMETER "\302"
+#endif
+
+/*
+#define TESTSTRING000 "\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017"
+#define TESTSTRING020 "\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037"
+#define TESTSTRING040 "\040\041\042\043\044\045\046\047\050\051\052\053\054\055\056\057"
+#define TESTSTRING060 "\060\061\062\063\064\065\066\067\070\071\072\073\074\075\076\077"
+#define TESTSTRING100 "\100\101\102\103\104\105\106\107\110\111\112\113\114\115\116\117"
+#define TESTSTRING120 "\120\121\122\123\124\125\126\127\130\131\132\133\134\135\136\137"
+#define TESTSTRING140 "\140\141\142\143\144\145\146\147\150\151\152\153\154\155\156\157"
+#define TESTSTRING160 "\160\161\162\163\164\165\166\167\170\171\172\173\174\175\176\177"
+#define TESTSTRING200 "\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217"
+#define TESTSTRING220 "\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237"
+#define TESTSTRING240 "\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257"
+#define TESTSTRING260 "\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277"
+#define TESTSTRING300 "\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317"
+#define TESTSTRING320 "\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337"
+#define TESTSTRING340 "\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357"
+#define TESTSTRING360 "\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377"
+*/
+
 #include LANGUAGE_INCLUDE
 
 #endif //__LANGUAGE_H