how to write data onto program memory

[bharatwalia]

Hi,
I am using PIC16F876A for my project.
I want to write a value into program memory at compile time, then at run time I want to read that value and modify it and then again write it and so on.

Can anybody provide me with a small example to that I can implement the same.

Thanks.

[Ttelmah]

Use the forum search. This has been answered many times....

Be aware of the limitations:
1) When writing program memory, program execution stops.
2) The limited write life of the program memory.

http://www.ccsinfo.com/forum/viewtopic.php?t=38267
http://www.ccsinfo.com/forum/viewtopic.php?t=39402

For a couple of examples.
As a very sophisticated way of doing this, you can use Addressmod, but with a cost of code bulk.
If your chip has EEPROM, use this instead....

Best Wishes

[bharatwalia]

Is it possible to write data onto eeprom at compile time?
And then retrieve it during program execution.

[ckielstra]

Yes.
For code examples use the search function of this forum. Hint, search for '0x2100' (the EEPROM address in a PIC16).

[bharatwalia]

Thanks!...

I got it working ....