SDK Development / mbed-src

mbed SDK library sources

Fork of mbed-src by mbed official

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

Diff: targets/cmsis/TARGET_STM/TARGET_STM32F4XX/cmsis_nvic.c

Revision:
39:6f0d2ff04ac3
Parent:
20:4263a77256ae
--- a/targets/cmsis/TARGET_STM/TARGET_STM32F4XX/cmsis_nvic.c	Fri Oct 25 13:00:07 2013 +0100
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F4XX/cmsis_nvic.c	Fri Oct 25 13:30:04 2013 +0100
@@ -6,20 +6,22 @@
 #include "cmsis_nvic.h"
 
 #define NVIC_RAM_VECTOR_ADDRESS   (0x20000000)  // Location of vectors in RAM
-#define NVIC_FLASH_VECTOR_ADDRESS (0x0)         // Initial vector position in flash
+
+static unsigned char vtor_relocated;
 
 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
     uint32_t *vectors = (uint32_t*)SCB->VTOR;
     uint32_t i;
 
     // Copy and switch to dynamic vectors if the first time called
-    if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
+    if (!vtor_relocated) {
         uint32_t *old_vectors = vectors;
         vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
         for (i=0; i<NVIC_NUM_VECTORS; i++) {
             vectors[i] = old_vectors[i];
         }
         SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
+        vtor_relocated = 1;
     }
     vectors[IRQn + 16] = vector;
 }