initial version

Firmware/Marlin_main.cpp

@@ -5964,14 +5964,52 @@ void ClearToSend()
         SERIAL_PROTOCOLLNRPGM(MSG_OK);
 }
 
+update_currents() {
+	float current_high[3] = DEFAULT_PWM_MOTOR_CURRENT_LOUD;
+	float current_low[3] = DEFAULT_PWM_MOTOR_CURRENT;
+	float tmp_motor[3];
+	
+	SERIAL_ECHOLNPGM("Currents updated: ");
+
+	if (destination[Z_AXIS] < Z_SILENT) {
+		SERIAL_ECHOLNPGM("LOW");
+		for (uint8_t i = 0; i < 3; i++) {
+			digipot_current(i, current_low[i]);		
+			MYSERIAL.print(int(i));
+			SERIAL_ECHOPGM(": ");
+			MYSERIAL.println(current_low[i]);
+		}		
+	}
+	else if (destination[Z_AXIS] > Z_HIGH_POWER) {
+		SERIAL_ECHOLNPGM("HIGH");
+		for (uint8_t i = 0; i < 3; i++) {
+			digipot_current(i, current_high[i]);
+			MYSERIAL.print(int(i));
+			SERIAL_ECHOPGM(": ");
+			MYSERIAL.println(current_high[i]);
+		}		
+	}
+	else {
+		for (uint8_t i = 0; i < 3; i++) {
+			float q = current_low[i] - Z_SILENT*((current_high[i] - current_low[i]) / (Z_HIGH_POWER - Z_SILENT));
+			tmp_motor[i] = ((current_high[i] - current_low[i]) / (Z_HIGH_POWER - Z_SILENT))*destination[Z_AXIS] + q;
+			digipot_current(i, tmp_motor[i]);			
+			MYSERIAL.print(int(i));
+			SERIAL_ECHOPGM(": ");
+			MYSERIAL.println(tmp_motor[i]);
+		}
+	}
+}
+
 void get_coordinates()
 {
   bool seen[4]={false,false,false,false};
   for(int8_t i=0; i < NUM_AXIS; i++) {
     if(code_seen(axis_codes[i]))
     {
-      destination[i] = (float)code_value() + (axis_relative_modes[i] || relative_mode)*current_position[i];
+	  destination[i] = (float)code_value() + (axis_relative_modes[i] || relative_mode)*current_position[i];
       seen[i]=true;
+	  if (i == Z_AXIS && SilentModeMenu == 2) update_currents();
     }
     else destination[i] = current_position[i]; //Are these else lines really needed?
   }

Firmware/language_all.cpp

@@ -63,6 +63,11 @@ const char * const MSG_AUTO_HOME_LANG_TABLE[LANG_NUM] PROGMEM = {
 	MSG_AUTO_HOME_DE
 };
 
+const char MSG_AUTO_MODE_ON_EN[] PROGMEM = "Mode [auto power]";
+const char * const MSG_AUTO_MODE_ON_LANG_TABLE[1] PROGMEM = {
+	MSG_AUTO_MODE_ON_EN
+};
+
 const char MSG_A_RETRACT_EN[] PROGMEM = "A-retract";
 const char * const MSG_A_RETRACT_LANG_TABLE[1] PROGMEM = {
 	MSG_A_RETRACT_EN

Firmware/language_all.h

@@ -38,6 +38,8 @@ extern const char* const MSG_AUTHOR_LANG_TABLE[1];
 #define MSG_AUTHOR LANG_TABLE_SELECT_EXPLICIT(MSG_AUTHOR_LANG_TABLE, 0)
 extern const char* const MSG_AUTO_HOME_LANG_TABLE[LANG_NUM];
 #define MSG_AUTO_HOME LANG_TABLE_SELECT(MSG_AUTO_HOME_LANG_TABLE)
+extern const char* const MSG_AUTO_MODE_ON_LANG_TABLE[1];
+#define MSG_AUTO_MODE_ON LANG_TABLE_SELECT_EXPLICIT(MSG_AUTO_MODE_ON_LANG_TABLE, 0)
 extern const char* const MSG_A_RETRACT_LANG_TABLE[1];
 #define MSG_A_RETRACT LANG_TABLE_SELECT_EXPLICIT(MSG_A_RETRACT_LANG_TABLE, 0)
 extern const char* const MSG_BABYSTEPPING_X_LANG_TABLE[1];

Firmware/language_en.h

@@ -103,6 +103,7 @@
 
 #define MSG_SILENT_MODE_ON					"Mode     [silent]"
 #define MSG_SILENT_MODE_OFF					"Mode [high power]" 
+#define MSG_AUTO_MODE_ON					"Mode [auto power]"
 #define(length=20) MSG_REBOOT				"Reboot the printer"
 #define(length=20) MSG_TAKE_EFFECT			" for take effect"											
 

Firmware/ultralcd.cpp

@@ -2754,7 +2754,12 @@ static void lcd_sort_type_set() {
 #endif //SDCARD_SORT_ALPHA
 
 static void lcd_silent_mode_set() {
-  SilentModeMenu = !SilentModeMenu;
+	switch (SilentModeMenu) {
+	case 0: SilentModeMenu = 1; break;
+	case 1: SilentModeMenu = 2; break;
+	case 2: SilentModeMenu = 0; break;
+	default: SilentModeMenu = 0; break;
+	}
   eeprom_update_byte((unsigned char *)EEPROM_SILENT, SilentModeMenu);
   digipot_init();
   lcd_goto_menu(lcd_settings_menu, 7);
@@ -3158,10 +3163,13 @@ static void lcd_settings_menu()
 	  MENU_ITEM(gcode, MSG_DISABLE_STEPPERS, PSTR("M84"));
   }
     
-  if ((SilentModeMenu == 0) || (farm_mode) ) {
+  if (!farm_mode) { //dont show in menu if we are in farm mode
-    MENU_ITEM(function, MSG_SILENT_MODE_OFF, lcd_silent_mode_set);
+	  switch (SilentModeMenu) {
-  } else {
+	  case 0: MENU_ITEM(function, MSG_SILENT_MODE_OFF, lcd_silent_mode_set); break;
-    MENU_ITEM(function, MSG_SILENT_MODE_ON, lcd_silent_mode_set);
+	  case 1: MENU_ITEM(function, MSG_SILENT_MODE_ON, lcd_silent_mode_set); break;
+	  case 2: MENU_ITEM(function, MSG_AUTO_MODE_ON, lcd_silent_mode_set); break;
+	  default: MENU_ITEM(function, MSG_SILENT_MODE_OFF, lcd_silent_mode_set); break;
+	  }	  
   }
   
 	if (!isPrintPaused && !homing_flag)
@@ -4530,10 +4538,13 @@ static void lcd_tune_menu()
   MENU_ITEM(function, MSG_FILAMENTCHANGE, lcd_colorprint_change);//7
 #endif
   
-  if (SilentModeMenu == 0) {
+  if (!farm_mode) { //dont show in menu if we are in farm mode
-    MENU_ITEM(function, MSG_SILENT_MODE_OFF, lcd_silent_mode_set_tune);
+	  switch (SilentModeMenu) {
-  } else {
+	  case 0: MENU_ITEM(function, MSG_SILENT_MODE_OFF, lcd_silent_mode_set); break;
-    MENU_ITEM(function, MSG_SILENT_MODE_ON, lcd_silent_mode_set_tune);
+	  case 1: MENU_ITEM(function, MSG_SILENT_MODE_ON, lcd_silent_mode_set); break;
+	  case 2: MENU_ITEM(function, MSG_AUTO_MODE_ON, lcd_silent_mode_set); break;
+	  default: MENU_ITEM(function, MSG_SILENT_MODE_OFF, lcd_silent_mode_set); break;
+	  }
   }
   END_MENU();
 }

Firmware/ultralcd.h

@@ -105,6 +105,7 @@ void lcd_mylang();
   extern int farm_no;
   extern int farm_timer;
   extern int farm_status;
+  extern int8_t SilentModeMenu;
 
 #ifdef SNMM
   extern uint8_t snmm_extruder;