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write_eeprom limit problem

 
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capella



Joined: 07 Feb 2009
Posts: 38

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write_eeprom limit problem
PostPosted: Sat Jul 03, 2010 2:31 am     Reply with quote

Hello, I try to write internal eeprom(18f452) as big than 255, but I can't. It means when I try to write eeprom 1020 adc value; I can not. Everytime pic eeprom is saved 255...what is wrong? (I defined adc values as int32).
jbmiller



Joined: 07 Oct 2006
Posts: 73
Location: Greensville,Ontario

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PostPosted: Sat Jul 03, 2010 4:54 am     Reply with quote

Knowledge is power...please read the PIC datasheets !
EEPROM is designed as BYTES, not Bits, Words, or Long words so you must access that memory area as Bytes (8 bits).
It is a simple task to 'split' the Word or LWord data into Byte sized 'chunks' to store.
There have been several examples here in the past to handle this.
Ttelmah



Joined: 11 Mar 2010
Posts: 19515

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PostPosted: Sat Jul 03, 2010 7:20 am     Reply with quote

and, the code for doing this is supplied with the compiler. Look at the file 'internal_eeprom.c'.

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