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" <> 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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