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write_program_eeprom/read_program_eeprom bug?there a bug

 
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setb2609
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write_program_eeprom/read_program_eeprom bug?there a bug
PostPosted: Sat Apr 02, 2005 5:48 am     Reply with quote
hi,

is there a bug wirh write_program_eeprom or read_program_eeprom in the PCH 3.214 compiler.

I have a bootloader that uses write_program_eeprom and read_eeprom_program to write and reread for verify the data. everything works fine from the bottom address up to address $6000. but exactly at $6000 there occurs a write failure over and over again.
As I realy can't see any problem with the code I would like to ask if there are any known problems (and maybe workarounds) ???
setb2609
Guest
PostPosted: Sat Apr 02, 2005 5:53 am     Reply with quote
btw. the problem occurs with a PIC18F452 - but I haven't tested different devices ...
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PostPosted: Sat Apr 02, 2005 11:38 am     Reply with quote
Quote:
Everything works fine from the bottom address up to address $6000.
But exactly at $6000 there occurs a write failure over and over again.

You didn't show your #fuses statement. Do you have the WRT3 fuse
in your #fuses statement ? If so, it will write-protect that block.
I suggest that you remove it. From the data sheet:
Quote:

WRT3: Write Protection bit (1)
1 = Block 3 (006000-007FFFh) not write protected
0 = Block 3 (006000-007FFFh) write protected
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