From 543ad6eb4130a8c1cb47b0a2d96a4b74315e9da1 Mon Sep 17 00:00:00 2001
From: Marek Bel <marek.bel@posta.cz>
Date: Mon, 30 Sep 2019 19:58:09 +0200
Subject: [PATCH] Ask to reset Z offset before first layer calibration.

---
 Firmware/ultralcd.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Firmware/ultralcd.cpp b/Firmware/ultralcd.cpp
index 77af6d5f4..e352c8741 100755
--- a/Firmware/ultralcd.cpp
+++ b/Firmware/ultralcd.cpp
@@ -4774,6 +4774,12 @@ void lcd_toshiba_flash_air_compatibility_toggle()
 
 void lcd_v2_calibration()
 {
+    if(lcd_show_fullscreen_message_yes_no_and_wait_P(_i("Start from zero offset?"), false, false))////r=15
+    {
+        eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->
+                s[eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet))].z_offset)),0xffff);
+    }
+
 	if (mmu_enabled)
 	{
 	    const uint8_t filament = choose_menu_P(