-void DrawLcdLineBresenham(u8t xstart, u8t ystart, u8t xend, u8t yend);
-void DrawLcdLineBresenhamWW(u8t xstart, u8t ystart, u8t xend, u8t yend, u8t thickness);
-u8t WriteLcdCharacter(u8t x, u8t y, u8t Character);
-u8t WriteLcdString(u8t x, u8t y, char *str);
-void WriteLcdNumber(u8t x, u8t y, s16t number);
+void DrawLcdLineBresenham(const uint8_t xstart, const uint8_t ystart, const uint8_t xend, const uint8_t yend);
+void DrawLcdLineBresenhamWW(const uint8_t xstart, const uint8_t ystart, const uint8_t xend, const uint8_t yend, const uint8_t thickness);
+u8t WriteLcdCharacter(const uint8_t x, const uint8_t y, const uint8_t Character);
+u8t WriteLcdString(const uint8_t x, const uint8_t y, const char *str);
+void WriteLcdNumber(const uint8_t x, const uint8_t y, const int16_t number);