[CMSIS] Allow redefinition of the macro 'VECT_TAB_OFFSET' externally from the IDE, the makefile, or the command line
diff --git a/Source/Templates/system_stm32f4xx.c b/Source/Templates/system_stm32f4xx.c
index 3bd40f7..b4a269b 100644
--- a/Source/Templates/system_stm32f4xx.c
+++ b/Source/Templates/system_stm32f4xx.c
@@ -100,14 +100,14 @@
#if defined(VECT_TAB_SRAM)
#define VECT_TAB_BASE_ADDRESS SRAM_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
-#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
- This value must be a multiple of 0x200. */
#else
#define VECT_TAB_BASE_ADDRESS FLASH_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
-#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
- This value must be a multiple of 0x200. */
#endif /* VECT_TAB_SRAM */
+#if !defined(VECT_TAB_OFFSET)
+#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table offset field.
+ This value must be a multiple of 0x200. */
+#endif /* VECT_TAB_OFFSET */
#endif /* USER_VECT_TAB_ADDRESS */
/******************************************************************************/
