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Recovering from a hard fault cortex M3

mike morgen

Hi,

I'm new into  mixing C and ASM on Cortex M3 using keil, here is the question,

Suppose that a function tries to access some memory that is not in the system, something like this, the system crashes with the hardfualt exception, so my question is why after executing the hardfault the program reenters the hardfault again, is there a way to simply return to the next instruction

here is my sample code

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#include "LPC17xx.h" // Device header
int main(void)
{
SCB->SHCSR |= 0x00007000; // enable Usage Fault, Bus Fault, and MMU Fault
SCB->CCR |= 0x18; // enable div-by-0 and unaligned fault
int i=0;
static int test;
test = (*(unsigned int *)0x678000000);
while(1)
{
i++;
}
}
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Any ideas?

0