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Subject: Re: FT232H oddities in avrdude

From: Uwe Bonnes <bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Thu, 15 Sep 2011 16:32:28 +0200
>>>>> "Joerg" == Joerg Wunsch <libftdi@xxxxxxxxxxxxxxxxx> writes:

    Joerg> In article
    Joerg> <20081.3297.830397.151564@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
    Joerg> you write:
    >> Reading ./avrdude -C ./avrdude.conf -c ftdijtag -p m16 -b 2000000 -U
    >> flash:r:test:i takes about 0.45 sec versus 1.75 sec with USB2
    >> disabled on the system.

    Joerg> That's probably the result of the microslots on the high-speed
    Joerg> hub.

Same test with SVN Rev 1006 direct plugged in the PC:
Reading | ################################################## | 100% 0.39s
versus (USB2 unloades)
Reading | ################################################## | 100% 2.60s

That is nearly the factor 10 you have seen. I'll try to find time to
investigate further...
-- 
Uwe Bonnes                bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

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

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