Thanks,
I had come across the ttyAM.. ports before, but of course did not
realize that ttyAM1 = COM1
So I got some communication here going :-) (my printer head moved).
I have to check into ttyAM2 and see why this did not work. It looked
like an interrupt conflict but I did not have time to check it out
further. dmesg was a good point I will study the output more closely.
And what did you mean with expansion connector/rs232 driver chips
(ttyS2/3)?
Thanks,
Ole
--- In .com,
"skirkpatrick1091"
<skirkpatrick1091@...> wrote:
>
> According to the TS-7390 schematic (I have a TS-7390 here that I'm
> starting to play with), the COM1 connector has almost all the RS-
232
> control lines. It has DTR, RTS, CTS, and DCD but does not have
DSR or
> RI. The COM2 connector only supports RXD and TXD on pins 2 & 3
and if
> you have the RS-485 drivers installed, supports two RS-485 ports on
> pins 1 & 6 and also on pins 4 & 9.
>
> Running dmesg shows that there are serial ports at ttyAM0, ttyAM1,
and
> ttyAM2. According to linuxrc-fastboot, ttyAM0 is the console port
> when you use the TS-9445 and I'm assuming that ttyAM1 is the RS-
232 on
> the COM1 connector and ttyAM2 is the RS-232 on the COM2 connector.
> The output from dmesg also shows serial ports at ttts0-ttts4 as
well
> as tt8s0-tt8s4. But I looking in /dev, I would guess that ttyS0
&
> ttyS1 go to the two RS-485 ports on COM2 and ttyS2 and ttyS3 go to
the
> two TTL-level RS-232 ports on the expansion connector (which of
course
> need RS-232 driver chips).
>
>
> --- In .com,
Paul Breneman <Paul2003@> wrote:
> >
> > Charlie,
> >
> > > Seems the TS-7390 isn't too well documented. Looking at
the
> > > schematic, COM1 header carries signals for the UART1
serial
ports at
> > > RS-232 level. I believe other pins on COM1 header can
either
serve as
> > > the modem control / flow control signals of UART1, or as
Tx/Rx
of two
> > > other RS-232 ports, depending on how the port is opened
in
linux.
> >
> > There is no flow control for any serial port available on the
TS-
7390.
> > I left a few messages on this forum a couple of months ago
about
my
> > difficulties finding a USB serial adapter where flow control
worked
> > properly.
> >
> > The only port with flow control is the port used for the
console
and TS
> > didn't connect the flow control pins on the micro. I wish
they
had
> used
> > the second port for the console and wired those pins so there
would
> have
> > been at least one port with flow control.
> >
> > In the final product I guess I'll need to use some DIO lines
for
flow
> > control as I don't want to use a USB serial adapter in the
product.
> >
> > --
> > Regards,
> > Paul Breneman
> > www.TurboControl.com
> >
>