EEPROM Interrupt

ahmadkamalnasir · Joined: 24 Nov 2009 Posts: 5

Hi,

I want to know how we can use the EEPROM interrupt mechanism to store the data into internal eeprom memory. I am running a computation intensive process so that i want to have a minimum time latency on the computation. I would appreciate the prompt reply.

Regards

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Here is some code that uses the EEprom interrupt to do buffered writes
to Data EEprom. It's not written in CCS but it looks like it could be
easily translated.
http://svn.psas.pdx.edu/svn/psas/tags/oct2004-rc1/c/firmware/PicCore/pc_eeprom.c
http://svn.psas.pdx.edu/svn/psas/trunk/c/firmware/PicCore/pc_eeprom.h

I don't want to translate it to CCS for you. I am just giving you these
links to answer your question.

bkamen · Posted: Fri Nov 27, 2009 8:30 pm

Are you using the EEPROM for usage intensive operations?

In case you are, EEPROM is bad for that. EEPROM has a typical write-cycle life limit which can easily be blown away with constant write cycles.

Otherwise,

Carry on. :D

-Ben
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D

ahmadkamalnasir · Joined: 24 Nov 2009 Posts: 5

Thanks for replying PCM PRogrammer. Smile

In the source code which you have refered why we have to disable the interrupts during the reading operation? Question

For me disabling the interrupts during writing is obvious but why for reading when this is fast!!

P.S.: "bkamen" I am not using eeprom frequently, only when new parameters have to be stored. I am aware of the limited write cycles of the internal eeprom.