any known working USB/serial converters?
Gene Heskett
gene.heskett at verizon.net
Tue Jul 7 16:29:04 UTC 2009
On Tuesday 07 July 2009, Steve Underwood wrote:
>Gene Heskett wrote:
>> On Tuesday 07 July 2009, Steve Underwood wrote:
>>> Robert P. J. Day wrote:
>>>> a while back, i was whining about the lack of functionality of a
>>>> particular USB/serial converter:
>>>>
>>>> http://osdir.com/ml/fedora-test-list/2009-05/msg00398.html
>>>>
>>>> does anyone have such a converter that just plain works out of the
>>>> box? i'm more than happy to buy and try another brand if it's the
>>>> prolific product that's causing the trouble.
>>>
>>> The log shown there lists a Prolific pl2303 USB serial converter chip.
>>> I've been using various converters based on those with Linux for several
>>> years, and never had a problem. I use them at speeds up to 460800bps.
>>>
>>> Steve
>>
>> yes, and in a low traffic situation, they will throw away the first byte
>> of a packet about 10% of the time. That is enough to make them worthless
>> for most apps. Use FTDI stuff.
>
>My experience is completely the opposite. I found the FTDI devices
>useless. They keep hiccuping or locking up completely. I've used the
>prolific devices in applications from intermittent bursts at 1200bps, to
>endless streaming at 460800bps. I also use them in applications where
>the adaptor is powering opto couplers, and the voltages end up way off.
>I've never had problems.
>
>Steve
We will agree to disagree then. I have never had an FTDI deice do anything but
work with one singular exception, it was on the end of 2 usb extension cords,
with the far end devices plugged into a separate circuit, and the hub did not
survive a very close lightning hit, one of maybe .1 secs between the flash and
the crack. pl2303's will not work to my ups, nor will they work for heyu
about 25% of the time. FTDI's Just Work(TM) for both.
--
Cheers, Gene
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