Re: USB to Serial converter code pl2303

["Frank Schäfer" <fschaefer.oss@googlemail.com>]

Am 19.02.2014 18:14, schrieb Johan Hovold:
> On Wed, Feb 19, 2014 at 06:05:54PM +0100, Karsten Malcher wrote:
>> Am 19.02.2014 18:00, schrieb Johan Hovold:
>>> I need an adapter that can handle 2400 Baud to talk to the
>>> ft639/ede639 servo controller chip or possibly a pl2303 driver
>>> that is improved.
>>> The pl2303-driver can handle 2400 baud, but not sure exactly what baud
>>> rates are available for a cloned/pirated pl2303 chip (if that is what
>>> you've got). 115200 baud should be supported, though.
>> We have tested different baud rates with the PL2303HX china clones.
>> All are working including non standard baud rates.
Urgh... Karsten... don't confuse the people. :/
Yes, _your_ clones behave exactly like HX originals, but others don't.

> Ok, good, so 2400 baud should work.
Indeed.
Even the bad clones should support all standard baud rates up o 115200.

>
>> But the non standard baud rates are only available with the modified
>> driver from Frank Schäfer.
> What driver is that? The latest clone-related patch from Frank that I've
> seen stated:
>
> 	"According to Prolific, several (unauthorized) cheap and less
> 	 functional clones of the PL2303HX chip are in circulation. [1]
> 	 I've had the chance to test such a cloned device and it turned
> 	 out that it doesn't support any baud rates above 115200 baud
> 	 (original: 6 Mbaud) It also doesn't support the divisior based
> 	 baud rate encoding method, so no continuous baud rate adjustment
> 	 is possible."
This patch is still 100% valid.
The "good" clones are detected as originals, which is fine.

Regards,
Frank

> Thanks,
> Johan
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