[ECOS] To NavEcos

[ECOS] To NavEcos

[Vikram Mehta]

Hi NavEcos

Thanx a lot for ur response.
I was able to solve the problem. ( and I did not have to use an 
oscilloscope . ha ha)
But Thanx again





On Mon, 28 Oct 2002 NavEcos wrote :
>On Saturday 26 October 2002 09:12 pm, Vikram Mehta wrote:
> > Hi NavEcos
> >
> > the baudrate I am using is 38400. THis is mentioned in the
> > Docmentations.Earlier I had tried at 9600 which is what I 
>have
> > been using.
> > What baudrate shud I be using
> > And u have talked abt the cable connection. Kindly specify 
>what
> > type of Cable connection I should use.
> > I am using  the Cable sent along E7t. The cable specificaton 
>given
> > along is
> > "signal ground, Rx, and Tx. Rx, and Tx  not  crossed over
> > (that is, it must be a straight-through cable).  "
>
>I am no expert, but from what it sounds like you either have a 
>bad cable or
>the wrong baudrate.  I would simply try other baud rates with 
>reboots in
>between.
>
>I once had a case where a serial cable failed to work in my 
>laptop when the
>laptop was running off from the battery.  Same sort of results.  
>With the
>wrong baud rate you'll get garbage characters, and with a cable 
>that has a
>high impedance the same sort of thing can happen.
>
>Of course, this may not be the problem at all, it's very 
>difficult to debug a
>problem when you're not there, and I'm not.  If it were me, I'd 
>hook up an
>oscilloscope if I had to and debug by reading the bits.  I'd also 
>recompile
>the redboot code and make a modification to spit out a single 
>character
>repeatedly.
>
>-Rich

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[ECOS] Re: To NavEcos

[NavEcos]

Out of curiosity - what was the the problem?

Don't be embarassed if it was obvious, I once spent 3 days debugging a board 
because I forgot to replace a jumper after I programmed the EEPROM.

-Rich

On Monday 28 October 2002 07:53 pm, Vikram Mehta wrote:
> Hi NavEcos
>
> Thanx a lot for ur response.
> I was able to solve the problem. ( and I did not have to use an
> oscilloscope . ha ha)
> But Thanx again
>
> On Mon, 28 Oct 2002 NavEcos wrote :
> >On Saturday 26 October 2002 09:12 pm, Vikram Mehta wrote:
> > > Hi NavEcos
> > >
> > > the baudrate I am using is 38400. THis is mentioned in the
> > > Docmentations.Earlier I had tried at 9600 which is what I
> >
> >have
> >
> > > been using.
> > > What baudrate shud I be using
> > > And u have talked abt the cable connection. Kindly specify
> >
> >what
> >
> > > type of Cable connection I should use.
> > > I am using  the Cable sent along E7t. The cable specificaton
> >
> >given
> >
> > > along is
> > > "signal ground, Rx, and Tx. Rx, and Tx  not  crossed over
> > > (that is, it must be a straight-through cable).  "
> >
> >I am no expert, but from what it sounds like you either have a
> >bad cable or
> >the wrong baudrate.  I would simply try other baud rates with
> >reboots in
> >between.
> >
> >I once had a case where a serial cable failed to work in my
> >laptop when the
> >laptop was running off from the battery.  Same sort of results.
> >With the
> >wrong baud rate you'll get garbage characters, and with a cable
> >that has a
> >high impedance the same sort of thing can happen.
> >
> >Of course, this may not be the problem at all, it's very
> >difficult to debug a
> >problem when you're not there, and I'm not.  If it were me, I'd
> >hook up an
> >oscilloscope if I had to and debug by reading the bits.  I'd also
> >recompile
> >the redboot code and make a modification to spit out a single
> >character
> >repeatedly.
> >
> >-Rich
>
> __________________________________________________________
> Give your Company an email address like
> ravi @ ravi-exports.com.  Sign up for Rediffmail Pro today!
> Know more. http://www.rediffmailpro.com/signup/


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