Hi,
Before sending the board to Technological Systems, I want to ensure
that I haven't missed anything fundamental tests. I've already tried
the loopback test on my cable and filtered out that problem. Are there
any other test points that I could test?
Thanks,
Stanley Lee
--- In "Jesse" <> wrote:
>
> Well, you indeed have enough info to debug the bootup operation.
> I think something has changed on the TS-7250 that is perventing
> it from sending proper messages. At this point, if the board
> was mine, I would install the TS-9450 and reburn the flash,
> to see if it has been corrupted somehow. Your best solution
> probably is returning the board to the factory for reburning/and or
> repair.
>
> //Tech77man
>
> --- In "prak75_2004" <stanigator@> wrote:
> >
> > Hi,
> >
> > I have tested using a loopback test as described in
> > http://www.lammertbies.nl/comm/cable/RS-232.html, and I was able to
> > communicate without connecting to TS-7250.
> >
> > Regards,
> >
> > Stanley Lee
> >
> > --- In "Jesse" <jessenewton@> wrote:
> > >
> > > Okay, I picked up two things from your last message,
> > > the board has been communicating successfully until recently,
> > > and that you checked your usb-to-serial converter with a
> > > feedback test. Was the feedback test what i call a loopback
> > > connection between tx and rx, pins 2 & 3? Can you do this
> > > test at the TS-7250 Com1 end, that is short pin 2 to 3, and
> > > see if you can communicate without being connected to the
> > > TS-7250? If indeed you can communicate, then I believe the
> > > problem is in the TS-7250 itself, something must have changed
> > > there.
> > >
> > > //Tech77man
> > >
> > >
> > > --- In "prak75_2004" <stanigator@>
> wrote:
> > > >
> > > > Hi,
> > > >
> > > > I have connected in such manner (null modem adapter, gender
> > > changer,
> > > > usb-to-serial adapter) and was able to communicate with my TS-
> 7250
> > > > board properly until quite recently. The gender changer is
> used b/c
> > > > the gender of my usb-to-serial adapter and the output of the
> null
> > > > modem adapter don't match each other.
> > > >
> > > > Sincerely,
> > > >
> > > > Stanley Lee
> > > >
> > > > --- In Jim Jackson <jj@> wrote:
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > On Tue, 13 Feb 2007, prak75_2004 wrote:
> > > > >
> > > > > > Hi Tech77man,
> > > > > >
> > > > > > I have connected COM1 of the TS-7250 board to my laptop
> using
> > > a null
> > > > > > modem adapter, followed by a gender changer,
> > > > >
> > > > > This is ringing alarm bells - you shouldn't need a gender
> changer
> > > > > if the null-modem cable really is a null-modem cable!
> > > > >
> > > > > I suspect you have an ordinary modem cable - with straight
> thru'
> > > pin
> > > > > connections. A Null-Modem cable is a Special cable with pin
> > > connections
> > > > > Crossed, as people have mentioned here.
> > > > >
> > > > >
> > > > > > and usb-to-serial
> > > > > > connector to my laptop to the correct COM port.
> > > > > > The settings of Hyperterminal is set to operate at a baud
> rate
> > > of
> > > > > > 115200, with 8N1 and None for Flow control on the correct
> COM
> > > port, as
> > > > > > instructed in the manual.
> > > > > >
> > > > > > Regards,
> > > > > >
> > > > > > Stanley Lee
> > > > > >
> > > > > > --- In "Jesse" <jessenewton@>
> wrote:
> > > > > > >
> > > > > > > Okay, the only things I see that you have not clarified
> in
> > > your
> > > > > > > message is the type of cable (1) it should be a null
> modem
> > > > > > > cable to Com1 connector, which means that the hardware
> > > control
> > > > > > > signals are connected to each other at pins 4 to 6 and 7
> to
> > > 8,
> > > > > > > by doing so, tx and rx are enabled and not blocked. (2)
> is
> > > the
> > > > > > > settings of Hyperterm, it should be set to whatever Com
> port
> > > > > > > that you are physically connected to, with 8N1 and None
> for
> > > > > > > Flow control. If all of that is in place, a power-up on
> the
> > > > > > > TS-7250 board, or pushing the reset button, should allow
> you
> > > > > > > to see the bootup messages.
> > > > > > >
> > > > > > > //Tech77man
> > > > > > >
> > > > > > > --- In "prak75_2004"
> <stanigator@>
> > > wrote:
> > > > > > > >
> > > > > > > > Hi,
> > > > > > > >
> > > > > > > > I have trouble seeing redboot messages of my TS-7250
> > > board. I have
> > > > > > > > jumpers 2 and 3 connected, and the power lights are
> on. I
> > > have
> > > > > > > trouble
> > > > > > > > communicating between the host computer and the
> > > microcontroller
> > > > > > > using
> > > > > > > > Hyperterminal in Windows through using a usb-to-serial
> > > converter.
> > > > > > > > We've checked the usb-to-serial converter using the
> > > feedback test,
> > > > > > > and
> > > > > > > > we've made sure that the transmit/receive pins at the
> > > > > > > microcontroller
> > > > > > > > and the usb-to-serial cable end are connected
> properly.
> > > I'm not
> > > > > > > sure
> > > > > > > > what else to check to see whether the board is working
> or
> > > not. Can
> > > > > > > > someone give me some suggestions?
> > > > > > > >
> > > > > > > > Thanks,
> > > > > > > >
> > > > > > > > Stanley Lee
> > > > > > > >
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
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