LPC5536 flash access in read ==> Bus Fault Error

[simongodfrind]

Hi, thanks for you time.

I'm working on a LPC5536, I have created a blank project for LPC55

And I have A BusFault when I execute the following code :

static uint32_t debug_test[16];
int main(void)
{

memcpy(debug_test, (void*) 0x24000, sizeof(debug_test));
while(1);

}

I don't know if I execute a more complex code, and add RTT client,  I can print data and I have :

segger RTT enabled!
flash initialised
total size: 0x0003dc00
block size: 0x00000000
sector size: 0x00008000
page size: 0x00000200


flash status before the mem-copy  :
CMD               00000000
EVENT            00000000
STARTA          00003de0
STOPA            00000000
DATAW[0]        00000000
DATAW[1]        00000000
DATAW[2]        00000000
DATAW[3]        00000000
INTEN_CLR     00000000
INTEN_SET     00000000
INTSTAT          00000004
INTEN              00000000
INTSTAT_CLR 00000000
INTSTAT_SET 00000000
MODULE_ID    c40a2100

INTSTAT decomposition
        LAST COMMAND IS FINISHED

let's try the mem-copy now :

HARD FAULT OCCURED

flash status inside the hard fault :
flash status :
CMD               00000000
EVENT           00000000
STARTA         00003de0
STOPA           00000000
DATAW[0]       00000000
DATAW[1]       00000000
DATAW[2]       00000000
DATAW[3]       00000000
INTEN_CLR   00000000
INTEN_SET    00000000
INTSTAT         0000000c
INTEN             00000000
INTSTAT_CLR 00000000
INTSTAT_SET 00000000
MODULE_ID    c40a2100

INTSTAT decomposition
          LAST COMMAND IS FINISHED
         ECC ERROR

Any idea on what can cause this ?  did I enabled any kind of protection ?

[Alice_Yang]

Hello,

This is not valid: 

memcpy(debug_test, (void*) 0x24000, sizeof(debug_test));