libftdi Archives

Subject: Re: First byte of LT245R eeprom

From: Uwe Bonnes <bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Fri, 1 Feb 2013 15:22:20 +0100
>>>>> "Anders" == Anders Larsen <al@xxxxxxxxxxx> writes:

...

    Anders> When experimenting with an FT245R I found that bit 0 is the
    Anders> culprit - when cleared, an FT245R is turned into an FT232R (or
    Anders> so it seems).  If you turn the bit back on, the functionality of
    Anders> the FT245R is restored.

    Anders> Unfortunately, there is no way (that I know of) to detect if a
    Anders> chip is really an FT232R or an FT245R other than checking bit 0
    Anders> of byte 0.

So libftdi has to carefully preserve bit 0 and should provide a user
override to change that value. The override is needed, when something went
wrong before.

Bye
-- 
Uwe Bonnes                bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------

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