On Thu, 25 Aug 2005 16:44:19 +0200, "Marco" <marcotoschi@nospam.it> wrote:
>> Before you spend too much time screwing around with Hyperterm or other
>> serial programs, have you looked at the signals from your fpga board to
>> the serial input of your computer? Start with no serial cable, and
>> check that the TX pin (when no characters being sent) is -5V
>> to -15V. The RX line should be floating close to 0V. Check the two pins
>> that TX and RX connect to on the computer (pins 2 and 3 of serial port
>> connector). The one that your FPGA TX is going to connect to should be
>> an RX pin, and it should be close to 0V. The pin that the FPGA board's
>> RX is going to connect to (computer TX) should be -5V to -15V.
>
>With no serial cable fpga TX is -5V and RX is 0V.
>
>With no serial cable pc RX is -15V and RX is 0V.
>
>Is it fault?

I can't tell. You listed RX twice, and no TX for the PC :-)
The levels you have for the FPGA board is exactly what I wrote
you should expect.

If the first one for the PC is really "RX" and the second is "TX", then
this is wrong. You have the wrong labels (which is what I guessed was
your problem). The PC signal with -15 is a TX pin, not an RX pin.

>Marco

Getting closer.
Philip
Philip Freidin
Fliptronics

Solved the trouble... sometimes, I'm so stupid... I don't have used a 
straight cable.

Now it works perfectly!

Many Thanks to Everyone!!!!
Marco 

> Before you spend too much time screwing around with Hyperterm or other
> serial programs, have you looked at the signals from your fpga board to
> the serial input of your computer? Start with no serial cable, and
> check that the TX pin (when no characters being sent) is -5V
> to -15V. The RX line should be floating close to 0V. Check the two pins
> that TX and RX connect to on the computer (pins 2 and 3 of serial port
> connector). The one that your FPGA TX is going to connect to should be
> an RX pin, and it should be close to 0V. The pin that the FPGA board's
> RX is going to connect to (computer TX) should be -5V to -15V.

With no serial cable fpga TX is -5V and RX is 0V.

With no serial cable pc RX is -15V and RX is 0V.

Is it fault?

Marco

>
> Personally, I'm surprised Microsoft included the piece of junk that is
> Hyperterminal in Windows; there were far better choices!  I also find it
> incredible that Hilgraeve had the audacity to stick an advertisement for 
> the
> full version of their product into it -- yeah, if the stripped-down 
> version
> works so poorly, I'd really want to risk using a full blown version!
>

I would have fully agreed an hour ago. However, today I was so frustrated 
about the broken scroll-buffer that I checked Hilgraeves homepage (did 
anyone other ever did that?): There is a free update ("personal edition") 
that at least fixes this bug... As I have downloaded it only about 10 
minutes ago I do not know about the other bugs, but it can't be worse then 
before...

BTW: In the XP-HyperTerm there is a note about (C) Microsoft, parts (c) by 
Hilgraeve, while the update (and I also believe the original Win 
95-HyperTerm) is only (c) Hilgraeve. So I get the feeling, that we were all 
partly blaming the wrong company for that piece of junk ;-)

Thomas 

Even the venerable Procomm craps out on me a few times a day. May i
suggest an old vt100 from ebay? :D

On Tue, 23 Aug 2005 15:20:47 +0200, "Marco" <marcotoschi@nospam.it> wrote:
>
>"Sean Durkin" <smd@despammed.com> wrote in message 
>news:430b026d$1@news.fhg.de...
>> Marco wrote:
>>> What software should I use into pc to send/ receive datas?
>>> I have tried Hyperterminal, but it seems it doesn't connect.
>> Have you checked the settings for the OPB_UART-component or whatever you
>> use for the RS232? The settings for baudrate, partity and stop bits have
>> to be identical in EDK and Hyperterminal, otherwise it won't work.
>>
>> cu,
>> Sean
>
>
>Baudrate, parity and stop bits are identical, but I don't see nothing 
>written into hyperterminal console, and I'm not able to write in it.

Before you spend too much time screwing around with Hyperterm or other
serial programs, have you looked at the signals from your fpga board to
the serial input of your computer? Start with no serial cable, and
check that the TX pin (when no characters being sent) is -5V
to -15V. The RX line should be floating close to 0V. Check the two pins
that TX and RX connect to on the computer (pins 2 and 3 of serial port
connector). The one that your FPGA TX is going to connect to should be
an RX pin, and it should be close to 0V. The pin that the FPGA board's
RX is going to connect to (computer TX) should be -5V to -15V.

Then to check that you have hyperterm set up right, with nothing
connected to the computer serial port, type on the keyboard. Nothing
should appear. Then connect pins 2 and 3 of computers serial port.
Now typing should echo.

On your FPGA board, change your program so that it just continuously
send a "*" character. Connect a scope to the FPGA board's TX signal.
Check the timing makes sense. Do the same on the computer (hold down
the "*" key), and look at what the computer is sending out. The
characters should look like what you got from the FPGA board.

Until ALL of what I have written above works, there is no point in
connecting the FPGA board to the computer, and complaining that it
"doesn't work". You need to do the above to localise where the problem
is.

Philip



Philip Freidin
Fliptronics

"Marco" <marcotoschi@nospam.it> wrote in message
news:defcnq$8cm$1@news.ngi.it...
> I would know if there are other softwares like hyperterminal, but that work
> better.

TeraTerm is much better.  Get it here:
http://hp.vector.co.jp/authors/VA002416/teraterm.html .  Unfortunately, it
hasn't been updated since 1999 (!), but it works fine under all Windows OSes.
The main limitation is that it only knows about Com1:-Com4: .

Personally, I'm surprised Microsoft included the piece of junk that is
Hyperterminal in Windows; there were far better choices!  I also find it
incredible that Hilgraeve had the audacity to stick an advertisement for the
full version of their product into it -- yeah, if the stripped-down version
works so poorly, I'd really want to risk using a full blown version!

"Benjamin Todd" <benjamin.toddREMOVEALLCAPITALS@cernREMOVEALLCAPITALS.ch> 
wrote in message news:defb8s$jvm$1@sunnews.cern.ch...
> In fact you can try it here:
> http://lab.msdn.microsoft.com/express/vbasic/default.aspx
>
> "Marco" <marcotoschi@nospam.it> wrote in message 
> news:defb1q$7q4$1@news.ngi.it...
>>
>> "Benjamin Todd" <benjamin.toddREMOVEALLCAPITALS@cernREMOVEALLCAPITALS.ch> 
>> wrote in message news:defake$igo$1@sunnews.cern.ch...
>>> Ah, be careful with Hyperterminal, It's not the greatest.
>>> Make sure (if this is the case for you) that you have the flow-control 
>>> set correctly...
>>> "None" means that it doesn't use any protocol to ensure the terminals at 
>>> either end of the line are alive and synchronised etc etc. I normally 
>>> find this the best way to go.
>>> (ie. the only wires used in the cable are Tx and Rx)
>>> Also make sure you check the box that says "echo typed characters 
>>> locally" if you want to see what you're typing.
>>> But by far the best is to write a tiny VB script, using MSComm1.OnComm 
>>> to grab data from the PC UART and send it back. Lets you rapidly develop 
>>> some interesting debug stuff!
>>> HTH
>>> Ben
>>>
>>
>> I'm using the core uart lite, it functions as core uart?
>>
>> I don't know VB, could you tell me some (free) software?
>>
>> Marco
>>
>
>

Sorry for my bad english.

I would know if there are other softwares like hyperterminal, but that work 
better.

Marco 

In fact you can try it here:
http://lab.msdn.microsoft.com/express/vbasic/default.aspx

"Marco" <marcotoschi@nospam.it> wrote in message 
news:defb1q$7q4$1@news.ngi.it...
>
> "Benjamin Todd" <benjamin.toddREMOVEALLCAPITALS@cernREMOVEALLCAPITALS.ch> 
> wrote in message news:defake$igo$1@sunnews.cern.ch...
>> Ah, be careful with Hyperterminal, It's not the greatest.
>> Make sure (if this is the case for you) that you have the flow-control 
>> set correctly...
>> "None" means that it doesn't use any protocol to ensure the terminals at 
>> either end of the line are alive and synchronised etc etc. I normally 
>> find this the best way to go.
>> (ie. the only wires used in the cable are Tx and Rx)
>> Also make sure you check the box that says "echo typed characters 
>> locally" if you want to see what you're typing.
>> But by far the best is to write a tiny VB script, using MSComm1.OnComm to 
>> grab data from the PC UART and send it back. Lets you rapidly develop 
>> some interesting debug stuff!
>> HTH
>> Ben
>>
>
> I'm using the core uart lite, it functions as core uart?
>
> I don't know VB, could you tell me some (free) software?
>
> Marco
> 

Hmm, free I don't know, I use Visual Studio 6.0, I see that they released a 
2005 beta version - see if you can try it!
Ben
"Marco" <marcotoschi@nospam.it> wrote in message 
news:defb1q$7q4$1@news.ngi.it...
>
> "Benjamin Todd" <benjamin.toddREMOVEALLCAPITALS@cernREMOVEALLCAPITALS.ch> 
> wrote in message news:defake$igo$1@sunnews.cern.ch...
>> Ah, be careful with Hyperterminal, It's not the greatest.
>> Make sure (if this is the case for you) that you have the flow-control 
>> set correctly...
>> "None" means that it doesn't use any protocol to ensure the terminals at 
>> either end of the line are alive and synchronised etc etc. I normally 
>> find this the best way to go.
>> (ie. the only wires used in the cable are Tx and Rx)
>> Also make sure you check the box that says "echo typed characters 
>> locally" if you want to see what you're typing.
>> But by far the best is to write a tiny VB script, using MSComm1.OnComm to 
>> grab data from the PC UART and send it back. Lets you rapidly develop 
>> some interesting debug stuff!
>> HTH
>> Ben
>>
>
> I'm using the core uart lite, it functions as core uart?
>
> I don't know VB, could you tell me some (free) software?
>
> Marco
>