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'rom Char' Usage

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DavidT

Jun 27 2007, 10:00 PM

Post #1

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Hi. I can create and read an array created with the rom char statement. Is it possible to write to this array from within the program to use as a temporary data logging store (before writing to SD card)?
Thanks, David.

Picpack 3.0 Released

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DavidT

Jun 30 2007, 11:18 AM

Post #2

Regular

Group: EstablishedMember
Posts: 61
Joined: 24-April 07
From: UK
Member No.: 3,471

Volatile is fine surely for the SD card buffer because it is only a temporary store before writing to the card. I accept this implies that it's OK to loose any data not written to the card when switching it off.

I want to minimise external components and the complexity that goes with that. This pushes me towards the 18F range where I can easily get up to 1k EEPROM and over 3k RAM. So I will go this route probably using RAM for caching since it is so much easier and quicker. Thanks for helping me think the options through.
David.