56f8367 Flash writing problem

TroyCorser — Mon, 11 Jun 2007 14:41:03 GMT

Hi All,

I'm using DSP 56f8367. Programming with CodeWarrior.

My software is handled by MicroC/OS-II RTOS.

The problem is that when I try to save some data writing into the flash memory the DSP lose the control.

If I'm in debug mode the code execution finish into:

"#pragma interrupt alignsp
void Cpu_Interrupt(void)
{
asm(DEBUGHLT);
}"

this are the steps I use to call the processor expert routine that write the flash memory:

OSIntEnter();

err = Flash_SetByte(address*2 , *cast_byte);

OSIntExit();

The OSIntEnter() is used to tell to the RTOS that the DSP is about to service an interrupt service routine (ISR).

The address I use starts from the:

DATA_FLASH_START 16384

till 16484

any Ideas on what I wrong?

Re: 56f8367 Flash writing problem

william_jiang — Fri, 23 Nov 2007 19:26:36 GMT

Is there any error code returned when you call "err = Flash_SetByte(address*2 , *cast_byte);"? How about using Flash_SetWord()?

Is there any interrupt service routine that accesses the data in the data flash? If so, disable these interrupt routines before erasing/programming the flash. That is the code snippet looks like this:

OSEnterCritical(); // disable all interrupts
err = Flash_SetByte(address*2 , *cast_byte);

OSExitCritical(); // enable interrupts

Other NXP Productsのトピック56f8367 Flash writing problem

56f8367 Flash writing problem

Re: 56f8367 Flash writing problem