Updated some configuration to save space. Also realised I never had optiboot installed but was using the builds for it!

Author: mikezs

Marlin/Configuration.h

@@ -835,7 +835,7 @@
                                   // is more than PID_FUNCTIONAL_RANGE then the PID will be shut off and the heater will be set to min/max.
 
   //#define PID_EDIT_MENU         // Add PID editing to the "Advanced Settings" menu. (~700 bytes of flash)
-  #define PID_AUTOTUNE_MENU     // Add PID auto-tuning to the "Advanced Settings" menu. (~250 bytes of flash)
+  //#define PID_AUTOTUNE_MENU     // Add PID auto-tuning to the "Advanced Settings" menu. (~250 bytes of flash)
 #endif
 
 // @section safety
@@ -1545,7 +1545,7 @@
  *     |    [-]    |
  *     O-- FRONT --+
  */
-#define NOZZLE_TO_PROBE_OFFSET { -15, -50, -8.5 }
+#define NOZZLE_TO_PROBE_OFFSET { -15, -50, -8.4 }
 
 // Enable and set to use a specific tool for probing. Disable to allow any tool.
 #define PROBING_TOOL 0
@@ -2325,7 +2325,7 @@
  */
 #define EEPROM_SETTINGS     // Persistent storage with M500 and M501
 //#define DISABLE_M503        // Saves ~2700 bytes of flash. Disable for release!
-#define EEPROM_CHITCHAT       // Give feedback on EEPROM commands. Disable to save PROGMEM.
+//#define EEPROM_CHITCHAT       // Give feedback on EEPROM commands. Disable to save PROGMEM.
 #define EEPROM_BOOT_SILENT    // Keep M503 quiet and only give errors during first load
 #if ENABLED(EEPROM_SETTINGS)
   #define EEPROM_AUTO_INIT  // Init EEPROM automatically on any errors.

Marlin/Configuration_adv.h

@@ -1958,10 +1958,10 @@
    */
   //#define STATUS_COMBINE_HEATERS    // Use combined heater images instead of separate ones
   //#define STATUS_HOTEND_NUMBERLESS  // Use plain hotend icons instead of numbered ones (with 2+ hotends)
-  #define STATUS_HOTEND_INVERTED      // Show solid nozzle bitmaps when heating (Requires STATUS_HOTEND_ANIM for numbered hotends)
-  #define STATUS_HOTEND_ANIM          // Use a second bitmap to indicate hotend heating
-  #define STATUS_BED_ANIM             // Use a second bitmap to indicate bed heating
-  #define STATUS_CHAMBER_ANIM         // Use a second bitmap to indicate chamber heating
+  //#define STATUS_HOTEND_INVERTED      // Show solid nozzle bitmaps when heating (Requires STATUS_HOTEND_ANIM for numbered hotends)
+  //#define STATUS_HOTEND_ANIM          // Use a second bitmap to indicate hotend heating
+  //#define STATUS_BED_ANIM             // Use a second bitmap to indicate bed heating
+  //#define STATUS_CHAMBER_ANIM         // Use a second bitmap to indicate chamber heating
   //#define STATUS_CUTTER_ANIM        // Use a second bitmap to indicate spindle / laser active
   //#define STATUS_COOLER_ANIM        // Use a second bitmap to indicate laser cooling
   //#define STATUS_FLOWMETER_ANIM     // Use multiple bitmaps to indicate coolant flow
@@ -2541,7 +2541,7 @@
 
 // The ASCII buffer for serial input
 #define MAX_CMD_SIZE 96
-#define BUFSIZE 4
+#define BUFSIZE 16
 
 // Transmission to Host Buffer Size
 // To save 386 bytes of flash (and TX_BUFFER_SIZE+3 bytes of RAM) set to 0.
@@ -2550,13 +2550,13 @@
 // For debug-echo: 128 bytes for the optimal speed.
 // Other output doesn't need to be that speedy.
 // :[0, 2, 4, 8, 16, 32, 64, 128, 256]
-#define TX_BUFFER_SIZE 0
+#define TX_BUFFER_SIZE 64
 
 // Host Receive Buffer Size
 // Without XON/XOFF flow control (see SERIAL_XON_XOFF below) 32 bytes should be enough.
 // To use flow control, set this buffer size to at least 1024 bytes.
 // :[0, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048]
-//#define RX_BUFFER_SIZE 1024
+#define RX_BUFFER_SIZE 1024
 
 #if RX_BUFFER_SIZE >= 1024
   // Enable to have the controller send XON/XOFF control characters to
@@ -2588,7 +2588,7 @@
  * Currently handles M108, M112, M410, M876
  * NOTE: Not yet implemented for all platforms.
  */
-//#define EMERGENCY_PARSER
+#define EMERGENCY_PARSER
 
 /**
  * Realtime Reporting (requires EMERGENCY_PARSER)
@@ -2617,7 +2617,7 @@
 //#define NO_TIMEOUTS 1000 // Milliseconds
 
 // Some clients will have this feature soon. This could make the NO_TIMEOUTS unnecessary.
-//#define ADVANCED_OK
+#define ADVANCED_OK
 
 // Printrun may have trouble receiving long strings all at once.
 // This option inserts short delays between lines of serial output.

Marlin/src/pins/pins.h

@@ -371,7 +371,7 @@
 #elif MB(MELZI)
   #include "sanguino/pins_MELZI.h"                  // ATmega644P, ATmega1284P              env:sanguino1284p_optimized env:sanguino1284p env:sanguino644p
 #elif MB(MELZI_V2)
-  #include "sanguino/pins_MELZI_V2.h"               // ATmega644P, ATmega1284P              env:sanguino1284p_optimized env:sanguino1284p env:sanguino644p env:melzi_optimized_extra_flags
+  #include "sanguino/pins_MELZI_V2.h"               // ATmega644P, ATmega1284P              env:sanguino1284p_optimized env:sanguino1284p env:sanguino644p env:melzi_optiboot_optimized_extra_flags
 #elif MB(MELZI_MAKR3D)
   #include "sanguino/pins_MELZI_MAKR3D.h"           // ATmega644P, ATmega1284P              env:sanguino1284p_optimized env:sanguino1284p env:sanguino644p
 #elif MB(MELZI_CREALITY)

ini/avr.ini

@@ -141,7 +141,7 @@ board_upload.maximum_size = 130048
 extends     = env:melzi_optiboot
 build_flags = ${tuned_1284p.build_flags}
 
-[env:melzi_optimized_extra_flags]
+[env:melzi_optiboot_optimized_extra_flags]
 extends       = env:melzi_optiboot
 build_flags   = ${tuned_1284p.build_flags} -finline-limit=3 -ffast-math
 build_unflags = -g -ggdb