Re: [ts-7000] Re: tsuart issues on a TS-7260 with ts9/ts11 kernels

["Kulendra Janaka" <>]

Hi

I thought of writing to you since we are having a very ground level problem with the opt2ttlcom. I thought I'd ask you cos u've said that you have ordered that option with your board.

 

OK now the problem is that we didnt order the opt2ttlcom  option :S (ok dont laugh :) ) I have mailed them asking whether its possible to get the option later but I have not yet got any answer.

 

This is the help that I need from you. Can you please tell me what exactly do you get with the opt2ttlcom option? I mean does the kernel really change to accomodate teh COM4 and 5 on the DIO2 or is it some utility patch that allows the DIO2 to be used as the UARTs? I'm quite new to this area, and I know that you have to have some sort of serial stack in DIO2 to use it as a serial port. I hope you can see the problem now, and if you can please send me a reply on this

 

Thanks a lot in Advance

Kulendra
 

On 8/2/06, Kym Newbery <> wrote:

HI There,

Thanks for the rapid and helpfull suggestions!

I have solved my problem after verifying with a loopback that the CPU
was fine, rather, it was my peripheral (a microchip PIC cpu with
software uart) that had a slight, 3%, baud rate error. So I have fixed
the PIC and it seems fine now. It seems as if the TSUarts are not
that tolerant of timing errors (neither are some other brands of uarts
anyway)

Regards
Kym

--- In ts-7000%40yahoogroups.com, "Eddie Dawydiuk" <> wrote:
>
> Hello,
>
> > I am having problems with the tsuart serial ports on a TS-7260 with
> > the opt2ttlcom option, with kernel 2.4.26-ts9 (supplied with the
> > board) and the default mtd filesystem.
> >
> > I have cross-compiled microcom (a small terminal emulator) to access
> > /dev/ttyTS1 at 9600,N,8,1 however, when I access the port I get a
> > console message :
> >
> > tsuart:change_speed port 1: 9600 bad
>
> This is normal this is the driver telling you the baud rate has been
> changed to 9600.
>
> > and nothing is transmitted/received...
>
> How are you testing if anything is being transmitted?
>
> > So I compiled the ts-11 kernel and included the tsuart modules into
> > the kernel (not as modules), and tried again. This time with the ts11
> > kernel, there is no console message, but at 9600,N,8,1 approx 1 in 3
> > receive characters are corrupted. If I send single chars to
> > /dev/ttyTS1 then they are usually received ok, but if I send a string,
> > eg "0123456789" then most characters are randomly corrupted.
>
> I tried to reproduce this here and everything was transmitted properly.
> How are you testing this? I'd recommend connecting a null modem cable
> to COM3 then starting a terminal emulator on the PC the null modem
> cable is connected to set the terminal emulator to use 9600,8,n,1.
> Finally from the command line run the following command.
>
> echo 1234567890987654321 > /dev/ttyTS0
>
> You should see the string 1234567890987654321 appear immediatly in your
> terminal emulator.
>
> //Eddie
>

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