How to emulate NV RAM on 2378 arm?

How can you save flash configuration data using Embedded LV?

I assume you are using the file IO.  If yes how RTX manages system files in memory? How the railways affected?  The example of 'write SD memory' has been a great help.  Y at - it a reference doc?

Thank you

Rick

Use of the flash drive to NV RAM is probably not the way to go.  Here is a note from a colleague...

"With LPC23xx, we first tried to use a part of flash as EEPROM. But we had a few problems with this method. First, it allows only to write one page at a time and not a byte. So, to save a new value of the byte, we had to page program in its entirety. Second, it took more time - about 200 ms to write a page and all traps to be disabled during this time - it because of problems with the devicenet network. Therefore, unless your application is not not time critical, we do not recommend using Flash as an option setting is stored.

On the current designs with LPC2xxx, we used the EEPROM 24 02/04 with the I2C Protocol. «We initialize, read, write routines written in C pilot.»

That's the tack point that I take.

Rick

Tags: NI Products

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