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LPC2138--IAP--debug wrong--Prefetch Abort

cathy li

Hi,
Now, I'm doing the IAP function in LPC2138 using the keil 3.05. Rebuild is ok. But when I debug it, it will have a PreFetch Abort. The wrong message is "Prefetch Abort: Thumb Instruction at 80000000H".This happens at every function about IAP ,such as ReadParID,BootCodeID and so on.

I have browsed many material from the internet without a result.

Did anybody encounter this matter?

Parents
  • 0 in reply to Tamir Michael

    this is iap.c

    #define IAP_ENTER_ADR  0x7ffffff1
#define iap_entry(a,b) ((void(*)())(IAP_ENTER_ADR))(a,b)
#define IAP_FCCLK       48000

uint32 ReadParID(void)
{
        paramin[0] = IAP_READPARTID;

        iap_entry(paramin,paramout);

        return (paramout[0]);

}
this is main.c
int main (void)
{
         uint8 err;
         VICIntEnClr=0xffffffff;
        MAMCR = 0;
        PLLCON = 0;
        PLLFEED = 0xaa;
         PLLFEED = 0x55;

         err =ReadParID();
//.............................

}

    .
    When I debug to ReadRarID(),it will prefetch abort.

Reply
  • 0 in reply to Tamir Michael

    this is iap.c

    #define IAP_ENTER_ADR  0x7ffffff1
#define iap_entry(a,b) ((void(*)())(IAP_ENTER_ADR))(a,b)
#define IAP_FCCLK       48000

uint32 ReadParID(void)
{
        paramin[0] = IAP_READPARTID;

        iap_entry(paramin,paramout);

        return (paramout[0]);

}
this is main.c
int main (void)
{
         uint8 err;
         VICIntEnClr=0xffffffff;
        MAMCR = 0;
        PLLCON = 0;
        PLLFEED = 0xaa;
         PLLFEED = 0x55;

         err =ReadParID();
//.............................

}

    .
    When I debug to ReadRarID(),it will prefetch abort.

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