[parisc-linux] serial on hp712/80 buggy?

[parisc-linux] serial on hp712/80 buggy?

[Joachim Steiger]

i just played around with my machine and stated that setting the baudrate
on the serial(rs232) to 57600(8n1) didnt work...
using 9600baud works ok

i was using minicom to connect to another machine (an embed. ppc) via
nullmodem-cable

i was using minicom on my pc in the same config (debian unstable,
2.4.16-adc1 on the pc, debian unstable, 2.4.17-32 from debian on the hppa)

anybody noticed a similar behaviour?
or are just all baudrates other than 9600 broken on the hppa-kernel?

TIA

roh

Re: [parisc-linux] serial on hp712/80 buggy?

[joel.soete]

Quoting Joachim Steiger <roh@hyte.de>:

> 
> i just played around with my machine and stated that setting the
> baudrate
> on the serial(rs232) to 57600(8n1) didnt work...
> using 9600baud works ok
> 
> i was using minicom to connect to another machine (an embed. ppc) via
> nullmodem-cable
> 
> i was using minicom on my pc in the same config (debian unstable,
> 2.4.16-adc1 on the pc, debian unstable, 2.4.17-32 from debian on the
> hppa)
> 
> anybody noticed a similar behaviour?
> or are just all baudrates other than 9600 broken on the hppa-kernel?
> 
On my 712/80, I also experiment some problems when I try to connect my ISP via
ppp;
"pon MyIsp" failled as follow :
...
Jun 20 18:35:30 palinux2 chat[18284]: send (ATZ^M)
Jun 20 18:35:30 palinux2 chat[18284]: expect (OK)
Jun 20 18:36:15 palinux2 chat[18284]: alarm
Jun 20 18:36:15 palinux2 chat[18284]: send (AT^M)
Jun 20 18:36:15 palinux2 chat[18284]: expect (OK)
Jun 20 18:37:00 palinux2 chat[18284]: alarm
Jun 20 18:37:00 palinux2 chat[18284]: Failed
Jun 20 18:37:00 palinux2 pppd[18283]: Connect script failed
Jun 20 18:37:01 palinux2 pppd[18283]: Exit.
...

But do not find enough time to investigate in much detail this problem, sorry :(

Joel

PS: this same modem connection works perfectly from a pc?

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Re: [parisc-linux] serial on hp712/80 buggy?

[Joachim Steiger]

On Thu, 20 Jun 2002 joel.soete@freebel.net wrote:

> But do not find enough time to investigate in much detail this problem, sorry :(
neither i did... but if this is a 'new thingie' i'll take a closer look
> 
> Joel
> 
> PS: this same modem connection works perfectly from a pc?
yes.. it also worked perfectly on 9600baud

roh

Re: [parisc-linux] serial on hp712/80 buggy?

[joel.soete]

Quoting Joachim Steiger <roh@hyte.de>:

> 
> 
> On Thu, 20 Jun 2002 joel.soete@freebel.net wrote:
> 
> > But do not find enough time to investigate in much detail this
> problem, sorry :(
> neither i did... but if this is a 'new thingie' i'll take a closer look
> > 
> > Joel
> > 
> > PS: this same modem connection works perfectly from a pc?
> yes.. it also worked perfectly on 9600baud
> 
Do not works for me?
In pppconfig I force 9600 bauds MyIsp connection, but do I also have to forc?
the modem config to 9600bauds?

Thanks for advise,
	joel


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Re: [parisc-linux] serial on hp712/80 buggy?

[Joachim Steiger]

On Thu, 20 Jun 2002 joel.soete@freebel.net wrote:

> Do not works for me?
> In pppconfig I force 9600 bauds MyIsp connection, but do I also have to forc?
> the modem config to 9600bauds?
> 
> Thanks for advise,
> 	joel

i think the problem in this case could be that the 'handshake-wires' on
the serial are also not working?

i don't use them (no flow control at all) so i do'nt know..

i never used analog modems to dialin... we got isdn pretty early *eg*
so i can just 'think loud'

can you 'speak AT' to your modem via minicom or some app similar?

roh

Re: [parisc-linux] serial on hp712/80 buggy?

[joel.soete]

Quoting Joachim Steiger <roh@hyte.de>:

> 
> 
> On Thu, 20 Jun 2002 joel.soete@freebel.net wrote:
> 
> > But do not find enough time to investigate in much detail this
> problem, sorry :(
> neither i did... but if this is a 'new thingie' i'll take a closer look
> > 
> > Joel
> > 
> > PS: this same modem connection works perfectly from a pc?
> yes.. it also worked perfectly on 9600baud
> 
Hmm, I find back my 712 Owner's guide in witch it is mentionned that "The port
operates at up to a 19.2k baud rate."

Joel

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Re: [parisc-linux] serial on hp712/80 buggy?

[Joachim Steiger]

On Thu, 20 Jun 2002 joel.soete@freebel.net wrote:

> Hmm, I find back my 712 Owner's guide in witch it is mentionned that "The port
> operates at up to a 19.2k baud rate."
> 
> Joel

ugh... but shouldnt the serial driver return -EIO or -EINVAL when setting
a unsupported baudrate?

roh

Re: [parisc-linux] serial on hp712/80 buggy?

[joel.soete]

Quoting Joachim Steiger <roh@hyte.de>:

> 
> 
> On Thu, 20 Jun 2002 joel.soete@freebel.net wrote:
> 
> > Hmm, I find back my 712 Owner's guide in witch it is mentionned that
> "The port
> > operates at up to a 19.2k baud rate."
> > 
> > Joel
> 
> ugh... but shouldnt the serial driver return -EIO or -EINVAL when
> setting
> a unsupported baudrate?

Dono, sorry (I do not have enough knowledge :( )

Joel


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Re: [parisc-linux] serial on hp712/80 buggy?

[Matthew Wilcox]

On Thu, Jun 20, 2002 at 04:49:12PM +0200, Joachim Steiger wrote:
> i just played around with my machine and stated that setting the baudrate
> on the serial(rs232) to 57600(8n1) didnt work...
> using 9600baud works ok

according to the lasi ERS, provided on the website, the lasi serial port
works up to 454k baud.  it's supposed to programmatically identical to
the 16550A.

-- 
Revolutions do not require corporate support.

Re: [parisc-linux] serial on hp712/80 buggy?

[Carlos O'Donell]

> 
> i just played around with my machine and stated that setting the baudrate
> on the serial(rs232) to 57600(8n1) didnt work...
> using 9600baud works ok
>

Where did you set the baud rate?
In minicom _and_ the console (Boot admin)?

It's up to both ends to support automatic baud rate selection
via a terminal protocol. I don't think the console on the
712 will do that (I'm sure VT-MODEM can...).

c.

Re: [parisc-linux] serial on hp712/80 buggy?

[Joachim Steiger]

On Thu, 20 Jun 2002, Carlos O'Donell wrote:
> Where did you set the baud rate?
> In minicom _and_ the console (Boot admin)?
i used the hppa just as 'console' to access an embedded-ppc
i reconnected the same cable to my pc and started minicom there
and it worked
on 9600baud i can use minicom on the hppa as on the pc

i also know there seems to be some kind of 'bug' that on most computers i
have to close and reopen the serial-device to get the baudrate change
through
in case of minicom it means to set the baudrate, save it as default , then
quit and restart minicom

> It's up to both ends to support automatic baud rate selection
> via a terminal protocol. I don't think the console on the
> 712 will do that (I'm sure VT-MODEM can...).
if setting it manually don't work, how should a automatic work??

there is no terminal protocol, its just that accessing the ootloader on
the ppc happens via 9k6 and 'flashing' it happens with 57600

i'm fairly shure that it MUST be an hppa soft/hardwareproblem since i
switched the cables and they are working correctly on other machines as on
9k6 on the hppa

regards

roh

ps: i will try to find out which is the setting my serial-port is is when
it should be 57600 by just feeding it with different baudrates and watch
when its displayed correctly soon

[parisc-linux] serial on hp712/80 buggy?

[Robert Boehm]

roh wrote:
[...]
>i just played around with my machine and stated that setting the baudrate
>on the serial(rs232) to 57600(8n1) didnt work...
>using 9600baud works ok
[...]

 I have na my 710 certain inconvenience with serial ports too.
In kernel-source the initial baud_base is 727272/16 = 454545.
It works up to 19200.

By many tests I can set baud_rate beetwen 46000 and 570000.
In this range serials works, ( with errors in ppp connection, but works up
to 115200).

In 710 parallel and two serials are in WDC 16C552 with external freq gen
7.3728 Mhz
div 16 (i suppose). It gives 460800.

Now, with correct baud_base 460800 minicom works up to 115200,
pppd works with errors at the same baudrate.

Still don't work serial mouse with gpm and serial driver in X.


                                                        Robert Boehm

What is baud_base on ttyS?  ?, You can test it by:
setserial -a /dev/ttyS?