[En-Nut-Discussion] write to / read from Flash/ROM

[Douglas Pearless]

Hi,

I am working on just such a problem.

I have a daughter board for the Ethernut2 (for Ethernut 1.3 you would need
to change it to add a 3.3v power supply, this involves changing the board,
or cutting a track).

I uses a standard MMC card (1MB to 1GB) of non-volatile storage using DOS
FAT16 r FAT32.

It has several 1.5F supercaps to allow NutOS to flush the buffers (512Bytes)
to the MMC card before the power is completely gone, I use a 78L05 from DC
to an interrupt to detect the power loss.

(It also has a real time clock and brings the RS 485 on the Ethernut2 to the
same end as the rest of the connectors).

The prototype board is due from the PCB manufacturer this week, then I have
to assemble and test, then update some code to get it working (I can read
files, navigate directories, but no writing yet).

I am hoping to be able to publish the project before Christmas.

Douglas.

-----Original Message-----
From: en-nut-discussion-bounces at egnite.de
[mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Benjamin
Gottschalk
Sent: Thursday, 25 November 2004 3:54 a.m.
To: en-nut-discussion at egnite.de
Subject: [En-Nut-Discussion] write to / read from Flash/ROM

Hi @ all,

I would like to know, if there is a possibility to write to / read from the
Flash/ROM during the runtime of my program. I want to log some events, but
the log-entries shouldn't be lost after a power failure.

Is there anybody, who can help me?

I'm using the Ethernut-Board 1.3.

Thank you very much for your answers!

Benni

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