fix(eeprom): ensure to have the correct FLASH_END

FLASH_END which is defined in CMSIS file doesn't take
into account the real flash size of a the device,
(it is just the maximum possible within the productline).

Fixes stm32duino#1316, fixes stm32duino#1500

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

libraries/EEPROM/src/utility/stm32_eeprom.c

@@ -52,25 +52,6 @@ extern "C" {
 #define FLASH_PAGE_NUMBER   ((uint32_t)(((LL_GetFlashSize() * 1024) / FLASH_PAGE_SIZE) - 1))
 #endif /* !FLASH_PAGE_NUMBER */
 
-/* Be able to change FLASH_END to use */
-#if !defined(FLASH_END)
-#if defined(EEPROM_RETRAM_MODE)
-#define FLASH_END  ((uint32_t)(EEPROM_RETRAM_START_ADDRESS + EEPROM_RETRAM_MODE_SIZE -1))
-#elif defined(DATA_EEPROM_END)
-#define FLASH_END DATA_EEPROM_END
-#elif defined (FLASH_BANK2_END) && (FLASH_BANK_NUMBER == FLASH_BANK_2)
-#define FLASH_END  FLASH_BANK2_END
-#elif defined (FLASH_BANK1_END) && (FLASH_BANK_NUMBER == FLASH_BANK_1)
-#define FLASH_END  FLASH_BANK1_END
-#elif defined(FLASH_BASE) && defined(FLASH_PAGE_NUMBER) && defined (FLASH_PAGE_SIZE)
-/* If FLASH_PAGE_NUMBER is defined by user, this is not really end of the flash */
-#define FLASH_END  ((uint32_t)(FLASH_BASE + (((FLASH_PAGE_NUMBER +1) * FLASH_PAGE_SIZE))-1))
-#endif
-#ifndef FLASH_END
-#error "FLASH_END could not be defined"
-#endif
-#endif /* FLASH_END */
-
 /* Be able to change FLASH_BASE_ADDRESS to use */
 #ifndef FLASH_BASE_ADDRESS
 /*
@@ -81,7 +62,8 @@ extern "C" {
 #if defined(EEPROM_RETRAM_MODE)
 #define FLASH_BASE_ADDRESS  EEPROM_RETRAM_START_ADDRESS
 #else
-#define FLASH_BASE_ADDRESS  ((uint32_t)((FLASH_END + 1) - FLASH_PAGE_SIZE))
+/* If FLASH_PAGE_NUMBER is defined by user, this is not really end of the flash */
+#define FLASH_BASE_ADDRESS  ((uint32_t)(FLASH_BASE + (FLASH_PAGE_NUMBER * FLASH_PAGE_SIZE)))
 #endif
 #ifndef FLASH_BASE_ADDRESS
 #error "FLASH_BASE_ADDRESS could not be defined"