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page_erase() problem

Paul Marley

I need to store my boards network ID into nonvolatile memory. I have been using the page_erase() and write_flash_chk():

page_erase(PAGE_START, 0xFF, FDM);
write_flash_chk(PAGE_START, NewAddr, FDM);

where 
 PAGE_START = 0x0400
and my timing is set up as

//FLASH WRITE CONFIGURATION
USEC = 0x0C;	//tFWT = 32.5 us
MSECH = 0x4E;	//MSEC for tFET = 10 ms
MSECL = 0x20;	// @32 MHz
FTCON = 0xFF;	//FWR = 0x0F & FER = 0x0F

That worked fine until I changed my Serial ISR to implement a ring buffer, which has nothing to do with my memory writing function.

I know it is diffucult to debug a problem without seeing the code, but can anyone suggest things to look out for or a better way to store variables in flash memory?

Thanks

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