Re: uchcom USB-serial

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Tue, Oct 16, 2018 at 05:44:30PM +0200, Manuel Bouyer wrote:
> 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 ?

This says "NLink Pax" on it. I think it is returning to where it came
from...

Thanks,

Patrick