pointer to EEPROM?

[bjerkely12]

Is it possible to declare a pointer to EEPROM ?

I want to read and write to EEPROM without using read_eeprom(),write_eeprom() routines.


Regards

[Mark]

No. There is a sequence for reading and writing to the eeprom. These functions take care of that for you. Refer to datasheet to see what this sequence is. However, you can have a variable which represents an address and use this with the function. You can increment and decrement this variable like you would a pointer and then use the functions to access the data. A word of note, the compiler puts the function's code "inline" so if you have many calls to the functions, you will have much wasted space. A solution to this is to wrap those functions inside another function or read the datasheet and write your own.

[Ttelmah]

Well, actually you can!...
The key is the compiler option 'typemod'.
You declare a named memory 'region', that is the EEPROM, with the two I/O functions needed to access this, and then you can access this region with a pointer if required.
In all honesty, it is probably more complex, than just using an address to access the EEPROM, but the same trick can also be used on chips that can access the program memory, to allow pointers to data in this memory as well. There is a significant overhead associated with doing this, but the ability is there.

Best Wishes

[treitmey]

Typemod URL

http://www.ccsinfo.com/faq.php?page=addressmod