Data Item Too Big

naganumakr · Guest

Hey, I'm trying to interface between an SD card in FAT16 format 512 byte sector size with a PIC16F877A. I need to create a size 512 character buffer array to send to and receive from the SD card, but when I enter:

#include "16F877A.h"
#include <stdlib.h>
#include <stdio.h>

char buffer [512];

into CCS, it comes up with the error, "Data Item Too Big". After seeing some projects actually use this code in their implementation, I know this is definitely possible. What am I doing wrong?

KN

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

naganumakr · Guest

Thanks for guiding me there--

I noticed those earlier when I was looking---

I've looked at the Register File Map and it only looks as though it can only handle up to 96 + 80 + 96 +96 = 368 bytes of data.

If that's true, and I can only use 368 bytes, is it at all possible to interface between a 512 byte sector size SD card and PIC16F877A?

What do you suggest?

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

http://www.ccsinfo.com/forum/viewtopic.php?t=32222