Upgrading Nios Software - external flash

Hi pfab,

My NIOS code is running from external flash memory.

What I'm doing is the follow.

I first of all receive the whole bin file from RS232. I save this file into an

free flash sector. This works fine.

So, the following thing I have to do is copy this flash sector to the flash sector my nios core is running from.

Therefore I have written a routine that is placed in internal memory by the section

habdler:

extern void UpdataSoftware(void)__attribute__((section(".OnChipMem")));

void UpdateSoftware(void)

{

alt_irq_context count3;

count3 = alt_irq_disable_all();

for(FlashAd = 0x0000000; FlashAd < 0x0140000; FlashAd += 0x0020000)

{

EraseFlashSector(FlashAd);

}

/* HERE MY PROGRAM FAILS. I erase the flash sector 0 (sector from which the nios is running from). The instruction "EraseFlashSector" is also placed in internal memory*/

unsigned int FlAdW;

unsigned int FlAdR;

unsigned char Byte;

for(FlAdW = 0x0000000,FlAdR = 0x0640000;FlAdW < 0x0140000; FlAdR++,FlAdW++)

{

unsigned char * ReadFlashData = (unsigned char*)(FlAdR);

Byte = *ReadFlashData;

WriteFlash(Byte,FlAdW);

}

UART1_T(&#39;O&#39;); UART1_T(&#39;K&#39;);

}

Regards

Karel