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How to relocate the Cortex-M3 Vector Table

Hello,
I am Davide Masi and I work on Fujitsu based on ARM Cortex M3.

How do I relocate the interrupt vector table from address 0x0000 to a different address, for examples in RAM?
Where can I find examples or AN about the problem?

Thanks

Parents

0 christian crosa over 13 years ago



#define NVIC_VectTab_FLASH      (0x00000000)
#define AP_START_SECTOR          0x00010000


void NVIC_SetVectorTable(unsigned long NVIC_VectTab, unsigned long Offset)
        {

        SCB->VTOR = NVIC_VectTab | (Offset & (unsigned int)0x1FFFFF80);
        }

int main (void) {

        void (*user_code_entry)(void);

        // your code here
        .
        .
        .

        // the jump to new vector table.


        NVIC_SetVectorTable(NVIC_VectTab_FLASH, AP_START_SECTOR);
        user_code_entry = (void (*)(void))((AP_START_SECTOR)+1);

        // jumps to new position of vector class
        user_code_entry();
        }

Reply

0 christian crosa over 13 years ago



#define NVIC_VectTab_FLASH      (0x00000000)
#define AP_START_SECTOR          0x00010000


void NVIC_SetVectorTable(unsigned long NVIC_VectTab, unsigned long Offset)
        {

        SCB->VTOR = NVIC_VectTab | (Offset & (unsigned int)0x1FFFFF80);
        }

int main (void) {

        void (*user_code_entry)(void);

        // your code here
        .
        .
        .

        // the jump to new vector table.


        NVIC_SetVectorTable(NVIC_VectTab_FLASH, AP_START_SECTOR);
        user_code_entry = (void (*)(void))((AP_START_SECTOR)+1);

        // jumps to new position of vector class
        user_code_entry();
        }

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