From 33ed748004ccd3a538c3761839dc3634516baea3 Mon Sep 17 00:00:00 2001
From: alextrical <35117191+alextrical@users.noreply.github.com>
Date: Sun, 5 Mar 2023 22:28:50 +0000
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20Fix=20Flash=20EEPROM=20for=20STM?=
 =?UTF-8?q?32G0B1CB=20(#25469)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Marlin/src/pins/stm32g0/pins_BTT_EBB42_V1_1.h                   | 2 +-
 .../MARLIN_BTT_EBB42_V1_1/variant_MARLIN_BTT_EBB42_V1_1.h       | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/Marlin/src/pins/stm32g0/pins_BTT_EBB42_V1_1.h b/Marlin/src/pins/stm32g0/pins_BTT_EBB42_V1_1.h
index cdd85a6d75..3de67ea8d5 100644
--- a/Marlin/src/pins/stm32g0/pins_BTT_EBB42_V1_1.h
+++ b/Marlin/src/pins/stm32g0/pins_BTT_EBB42_V1_1.h
@@ -44,7 +44,7 @@
     #define FLASH_EEPROM_EMULATION
   #endif
   #define EEPROM_PAGE_SIZE      (0x800UL) // 2K
-  #define EEPROM_START_ADDRESS  (0x0801F800UL)
+  #define EEPROM_START_ADDRESS  (0x8000000UL + (STM32_FLASH_SIZE) * 1024UL - (EEPROM_PAGE_SIZE) * 1UL)
   #define MARLIN_EEPROM_SIZE    EEPROM_PAGE_SIZE
 #endif
 
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_BTT_EBB42_V1_1/variant_MARLIN_BTT_EBB42_V1_1.h b/buildroot/share/PlatformIO/variants/MARLIN_BTT_EBB42_V1_1/variant_MARLIN_BTT_EBB42_V1_1.h
index ff75bc1e48..9373e2fa3b 100644
--- a/buildroot/share/PlatformIO/variants/MARLIN_BTT_EBB42_V1_1/variant_MARLIN_BTT_EBB42_V1_1.h
+++ b/buildroot/share/PlatformIO/variants/MARLIN_BTT_EBB42_V1_1/variant_MARLIN_BTT_EBB42_V1_1.h
@@ -155,6 +155,8 @@
   #define SERIAL_UART_INSTANCE  4
 #endif
 
+#define FLASH_BANK_NUMBER       FLASH_BANK_1
+
 // Default pin used for generic 'Serial' instance
 // Mandatory for Firmata
 #ifndef PIN_SERIAL_RX