Merge pull request #4553 from thinkyhead/rc_lcd_chars_save_ram

Save bytes for custom chars (Hitachi LCD)

Marlin/ultralcd.cpp

 
   /**
    * General function to go directly to a menu
-   * Remembers the previous position
    */
   static void lcd_goto_screen(screenFunc_t screen, const bool feedback = false, const uint32_t encoder = 0) {
     if (currentScreen != screen) {
       currentScreen = screen;
-      lcdDrawUpdate = LCDVIEW_CLEAR_CALL_REDRAW;
       encoderPosition = encoder;
-      if (feedback) lcd_quick_feedback();
       if (screen == lcd_status_screen) {
         defer_return_to_status = false;
         screen_history_depth = 0;
       }
+      if (feedback) lcd_quick_feedback();
+      lcd_implementation_clear();
       #if ENABLED(LCD_PROGRESS_BAR)
         // For LCD_PROGRESS_BAR re-initialize custom characters
         lcd_set_custom_characters(screen == lcd_status_screen);
       #endif
+      lcdDrawUpdate = LCDVIEW_CALL_REDRAW_NEXT;
     }
   }
 
     }
 
     if (current_click) {
-      lcd_goto_screen(lcd_main_menu, true);
-      lcd_implementation_init( // to maybe revive the LCD if static electricity killed it.
-        #if ENABLED(LCD_PROGRESS_BAR) && ENABLED(ULTIPANEL)
-          currentScreen == lcd_status_screen
-        #endif
-      );
       #if ENABLED(FILAMENT_LCD_DISPLAY)
         previous_lcd_status_ms = millis();  // get status message to show up for a while
       #endif
+      lcd_implementation_init( // to maybe revive the LCD if static electricity killed it.
+        #if ENABLED(LCD_PROGRESS_BAR)
+          false
+        #endif
+      );
+      lcd_goto_screen(lcd_main_menu, true);
     }
 
     #if ENABLED(ULTIPANEL_FEEDMULTIPLY)
 
     static void lcd_filament_change_resume_print() {
       filament_change_menu_response = FILAMENT_CHANGE_RESPONSE_RESUME_PRINT;
-      lcdDrawUpdate = 2;
       lcd_goto_screen(lcd_status_screen);
     }
 
     (*callback)();
   }
 
-#endif //ULTIPANEL
+#endif // ULTIPANEL
 
-/** LCD API **/
 void lcd_init() {
 
-  lcd_implementation_init();
+  lcd_implementation_init(
+    #if ENABLED(LCD_PROGRESS_BAR)
+      true
+    #endif
+  );
 
   #if ENABLED(NEWPANEL)
     #if BUTTON_EXISTS(EN1)
 
     bool sd_status = IS_SD_INSERTED;
     if (sd_status != lcd_sd_status && lcd_detected()) {
-      lcdDrawUpdate = LCDVIEW_CLEAR_CALL_REDRAW;
-      lcd_implementation_init( // to maybe revive the LCD if static electricity killed it.
-        #if ENABLED(LCD_PROGRESS_BAR) && ENABLED(ULTIPANEL)
-          currentScreen == lcd_status_screen
-        #endif
-      );
+      lcd_sd_status = sd_status;
 
       if (sd_status) {
         card.initsd();
         if (lcd_sd_status != 2) LCD_MESSAGEPGM(MSG_SD_REMOVED);
       }
 
-      lcd_sd_status = sd_status;
+      lcdDrawUpdate = LCDVIEW_CLEAR_CALL_REDRAW;
+      lcd_implementation_init( // to maybe revive the LCD if static electricity killed it.
+        #if ENABLED(LCD_PROGRESS_BAR)
+          currentScreen == lcd_status_screen
+        #endif
+      );
     }
 
   #endif //SDSUPPORT && SD_DETECT_PIN

Marlin/ultralcd_impl_HD44780.h

 
 static void lcd_set_custom_characters(
   #if ENABLED(LCD_PROGRESS_BAR)
-    bool progress_bar_set = true
+    bool info_screen_charset = true
   #endif
 ) {
-  byte bedTemp[8] = {
+  static byte bedTemp[8] = {
     B00000,
     B11111,
     B10101,
     B00000,
     B00000
   }; //thanks Sonny Mounicou
-  byte degree[8] = {
+  static byte degree[8] = {
     B01100,
     B10010,
     B10010,
     B00000,
     B00000
   };
-  byte thermometer[8] = {
+  static byte thermometer[8] = {
     B00100,
     B01010,
     B01010,
     B10001,
     B01110
   };
-  byte uplevel[8] = {
-    B00100,
-    B01110,
-    B11111,
-    B00100,
-    B11100,
-    B00000,
-    B00000,
-    B00000
-  }; //thanks joris
-  byte refresh[8] = {
-    B00000,
-    B00110,
-    B11001,
-    B11000,
-    B00011,
-    B10011,
-    B01100,
-    B00000,
-  }; //thanks joris
-  byte folder[8] = {
-    B00000,
-    B11100,
-    B11111,
-    B10001,
-    B10001,
-    B11111,
-    B00000,
-    B00000
-  }; //thanks joris
-  byte feedrate[8] = {
+  static byte feedrate[8] = {
     B11100,
     B10000,
     B11000,
     B00101,
     B00000
   }; //thanks Sonny Mounicou
-  byte clock[8] = {
+  static byte clock[8] = {
     B00000,
     B01110,
     B10011,
     B00000
   }; //thanks Sonny Mounicou
 
-  #if ENABLED(LCD_PROGRESS_BAR)
-    static bool char_mode = false;
-    byte progress[3][8] = { {
+  lcd.createChar(LCD_STR_BEDTEMP[0], bedTemp);
+  lcd.createChar(LCD_STR_DEGREE[0], degree);
+  lcd.createChar(LCD_STR_THERMOMETER[0], thermometer);
+  lcd.createChar(LCD_STR_FEEDRATE[0], feedrate);
+  lcd.createChar(LCD_STR_CLOCK[0], clock);
+
+  #if ENABLED(SDSUPPORT)
+    static byte uplevel[8] = {
+      B00100,
+      B01110,
+      B11111,
+      B00100,
+      B11100,
       B00000,
-      B10000,
-      B10000,
-      B10000,
-      B10000,
-      B10000,
-      B10000,
-      B00000
-    }, {
       B00000,
-      B10100,
-      B10100,
-      B10100,
-      B10100,
-      B10100,
-      B10100,
       B00000
-    }, {
+    }; //thanks joris
+    static byte refresh[8] = {
+      B00000,
+      B00110,
+      B11001,
+      B11000,
+      B00011,
+      B10011,
+      B01100,
+      B00000,
+    }; //thanks joris
+    static byte folder[8] = {
+      B00000,
+      B11100,
+      B11111,
+      B10001,
+      B10001,
+      B11111,
       B00000,
-      B10101,
-      B10101,
-      B10101,
-      B10101,
-      B10101,
-      B10101,
       B00000
-    } };
-    if (progress_bar_set != char_mode) {
-      char_mode = progress_bar_set;
-      lcd.createChar(LCD_STR_BEDTEMP[0], bedTemp);
-      lcd.createChar(LCD_STR_DEGREE[0], degree);
-      lcd.createChar(LCD_STR_THERMOMETER[0], thermometer);
-      lcd.createChar(LCD_STR_FEEDRATE[0], feedrate);
-      lcd.createChar(LCD_STR_CLOCK[0], clock);
-      if (progress_bar_set) {
-        // Progress bar characters for info screen
-        for (int i = 3; i--;) lcd.createChar(LCD_STR_PROGRESS[i], progress[i]);
-      }
-      else {
-        // Custom characters for submenus
-        lcd.createChar(LCD_STR_UPLEVEL[0], uplevel);
-        lcd.createChar(LCD_STR_REFRESH[0], refresh);
-        lcd.createChar(LCD_STR_FOLDER[0], folder);
+    }; //thanks joris
+
+    #if ENABLED(LCD_PROGRESS_BAR)
+      static byte progress[3][8] = { {
+        B00000,
+        B10000,
+        B10000,
+        B10000,
+        B10000,
+        B10000,
+        B10000,
+        B00000
+      }, {
+        B00000,
+        B10100,
+        B10100,
+        B10100,
+        B10100,
+        B10100,
+        B10100,
+        B00000
+      }, {
+        B00000,
+        B10101,
+        B10101,
+        B10101,
+        B10101,
+        B10101,
+        B10101,
+        B00000
+      } };
+      static bool char_mode = false;
+      if (info_screen_charset != char_mode) {
+        char_mode = info_screen_charset;
+        if (info_screen_charset) { // Progress bar characters for info screen
+          for (int i = 3; i--;) lcd.createChar(LCD_STR_PROGRESS[i], progress[i]);
+        }
+        else { // Custom characters for submenus
+          lcd.createChar(LCD_STR_UPLEVEL[0], uplevel);
+          lcd.createChar(LCD_STR_REFRESH[0], refresh);
+          lcd.createChar(LCD_STR_FOLDER[0], folder);
+        }
       }
-    }
-  #else
-    lcd.createChar(LCD_STR_BEDTEMP[0], bedTemp);
-    lcd.createChar(LCD_STR_DEGREE[0], degree);
-    lcd.createChar(LCD_STR_THERMOMETER[0], thermometer);
-    lcd.createChar(LCD_STR_UPLEVEL[0], uplevel);
-    lcd.createChar(LCD_STR_REFRESH[0], refresh);
-    lcd.createChar(LCD_STR_FOLDER[0], folder);
-    lcd.createChar(LCD_STR_FEEDRATE[0], feedrate);
-    lcd.createChar(LCD_STR_CLOCK[0], clock);
+    #else
+      lcd.createChar(LCD_STR_UPLEVEL[0], uplevel);
+      lcd.createChar(LCD_STR_REFRESH[0], refresh);
+      lcd.createChar(LCD_STR_FOLDER[0], folder);
+    #endif
+
   #endif
 }
 
 static void lcd_implementation_init(
   #if ENABLED(LCD_PROGRESS_BAR)
-    bool progress_bar_set = true
+    bool info_screen_charset = true
   #endif
 ) {
 
 
   lcd_set_custom_characters(
     #if ENABLED(LCD_PROGRESS_BAR)
-      progress_bar_set
+      info_screen_charset
     #endif
   );
 
       logo_lines(PSTR(""));
       safe_delay(2000);
     #endif
+
     lcd_set_custom_characters(
-    #if ENABLED(LCD_PROGRESS_BAR)
-      false
-    #endif
+      #if ENABLED(LCD_PROGRESS_BAR)
+        false
+      #endif
     );
   }