Re: uchcom USB-serial

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, Oct 16, 2018 at 04:36:35PM +0100, Patrick Welche wrote:
> Just had a proper go, and see:
> 
> uchcom0: QinHeng Electronics (0x1a86) USB2.0-Ser! (0x7523), rev 1.10/2.54, addr 3
> uchcom0: CH341 detected
> ucom3 at uchcom0
> uchcom0: cannot reset: STALLED
> uchcom0: cannot reset: STALLED
> uchcom0: cannot reset: STALLED
> uchcom0: cannot reset: STALLED
> uchcom0: cannot reset: STALLED
> uchcom0: cannot reset: STALLED
> uchcom0: cannot reset: STALLED
> ...
> 
> I note that you have the full word "Serial"...

Looks like a communication problem. Mine is manufactured by olimex,
which usually do robust hardware. I can see there is a true 12Mhz crystal.
Maybe yours uses a ceramic resonator, which is not stable enough ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--