[Mono-list] PROGRESS!! Re: Invalid data from CP2102 USB device

James Boulton j.boulton at veritide.com
Tue Apr 13 17:43:23 EDT 2010


If 125000 works with windows then try this with linux:

setserial /dev/ttyUSB0 spd_cust baud_base 250000 divisor 2

Then connect with minicom to test it.


On Tue, 2010-04-13 at 06:39 -0800, Steve Ricketts wrote:
> I now know the problem, but not the solution.  I've been fighting this almost
> non-stop for days and overlooked a key piece of information.  On Windows,
> I'm using a baud rate of 128000.  Very early on, I had to change the rate to
> 115200 in Linux because the 128000 is non-standard.  I just changed the baud
> rate in Windows to 115200 and got the same input as I'm getting in Linux!
> It works in Windows with baud rates of 125000, 128000, 127117 but not 115200
> Linux will only allow 115200 (CP210x docs say 127117 should be allowed)
> So, the baud rate is the problem.  Now... what's the solution??  How can I
> set a non-standard baud rate for the CP2102?
> So close... so close...

James Boulton
Electronics Engineer

Veritide Ltd
Kenton Chambers
Suite 407/408, Level 4
190 Hereford St,
Christchurch 8011
New Zealand

PO Box 13-769
Christchurch 8141
New Zealand

Phone: +64 3 3723506
Fax: +64 3 3723508
Email: j.boulton at veritide.com
Web: www.veritide.com

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