libftdi Archives

Subject: Re: Issues reading EEPROM on FT2232HL and FT232HL

From: Thomas Jarosch <thomas.jarosch@xxxxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Mon, 5 Nov 2018 22:20:58 +0100
Hi Yegor,

On 10/29/18 1:24 PM, Yegor Yefremov wrote:
> I've tried eeprom tool from examples folder and it turned out, that
> EEPROM was empty. It seems like there is no way to detect whether the
> EEPROM is empty or the data is corrupted?

As far as I remember a FTDI chip ignores the eeprom content if the
checksum doesn't match. If a bit flips in the eeprom, you'll end up with
the default USB vendor/product ID, too.

Cheers,
Thomas

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