[HLUG] Serial port setting
Mark Broadbent
mgjbroadbent at googlemail.com
Thu Apr 24 14:54:37 BST 2008
Hi Paul,
On 20/04/2008, paul.maddox.mail-list at synth.net
<paul.maddox.mail-list at synth.net> wrote:
> Andy,
>
> > The valid baud rates are listed in /usr/include/asm-i386/termbits.h
> > and 62500 isn't one of them. I believe you'll need to patch your
> > kernel a bit like this:
>
> Hmmm, that's a bit awkward for me, but I'll look into it, thanks.
>
> > It would seem a lot easier to just change the other device to 57600
> > or 115200, but I suppose there is a good reason why this isn't
> > possible in your case..
>
> The device attached is an 8 bit micro and because it's running from a
> 16Mhz clock anything that's non divisible gives me errors, for example at
> 115200 I get 3.7% rate error (ie, it's 3.7% off the correct rate). At
> 31250 (MIDI) and 62500 (double MIDI) I get 0%.
>
> I'll have a tinker and see what I can do.
>
> This explains what I'm doing - http://qix.synth.net/Blog/?p=6
> And this is the background - http://qix.synth.net/
This might be an weird suggestion but why don't you get a MIDI card
and use that to communicate with your board?
Thanks
Mark
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