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Message

Re: UART output problems

2008-01-15 by micro_chipman

Thanks Jim, I will check the ground connection and see if this could 
be the problem. Again Thanks

--- In AVR-Chat@yahoogroups.com, James Wagner <wagnerj@...> wrote:
>
> That should have read DB9 cables.
> 
> Jim
> 
> On Jan 15, 2008, at 9:30 AM, James Wagner wrote:
> 
> > To Clarify -
> >
> > Bidirectional RS232 requires at least 3 connections - Rx, Tx, and
> > Common or Ground. If your cable has no ground wire, it could have
> > worked through the JTAG ground. Removing JTAG would then cause the
> > RS232 to fail. Check your cable with an ohm meter or continuity
> > checker to verify that (pin 5, I think, on DB29 cables).
> >
> > Jim
> >
> > On Jan 15, 2008, at 9:14 AM, David VanHorn wrote:
> >
> > > > > Is there a ground connection between the PC and the system 
when
> > > the
> > > > > debugger isn't plugged in?
> > > > >
> > > > Yes it should be grounded.
> > >
> > > I agree that it SHOULD be, but the question was wether it IS.
> > >
> > > In theory, there is no difference between theory and 
practice. :)
> > >
> > >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> > 
> 
> 
> 
> [Non-text portions of this message have been removed]
>

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