Other Parts Discussed in Thread: NOWECC, HALCOGEN
I'm investigating the Hercules Safety Demo code. When I checked the HET parity error, the parity error occured on an unexpected line of code.
The error is generated in the file nhet.c , in the function void NHET_Parity(void):
The error is thrown at this line:
/** Enable NHET Parity */
nhetREG->HETPCR = 0x0000000A;
I was expecting it to happen here:
/** Corrupt the Parity RAM location to introduce a * Single bit error */
RAMBASE = (unsigned int *) (nhetMEM+0x2000) ;
*RAMBASE =~(*RAMBASE);
because it is only at that point that the memory inconsistency is introduced?
/** @fn void NHET_Parity(void)
* @brief NHET RAM Parity Error creation and check routines.
*/
void NHET_Parity(void)
{
unsigned int temp;
unsigned int *RAMBASE = (unsigned int *)nhetMEM;
/** Enable NHET Parity */
nhetREG->HETPCR = 0x0000000A; // this is where the error is occuring
/** Fill NHET RAM with known Pattern
* The Parity Gets updated while filling the RAM */
for (temp=0;temp<0x080;temp++)
{
*RAMBASE = 0xA5A5A5A5;
RAMBASE++;
}
/** Enable access to parity RAM */
nhetREG->HETPCR |= 0x00000100;
/** Corrupt the Parity RAM location to introduce a
* Single bit error */
RAMBASE = (unsigned int *) (nhetMEM+0x2000) ;
*RAMBASE =~(*RAMBASE); // this is where I was expecting it to occur
