Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.os.linux.hardware > #1667

Re: plip: StdOut > ttyS0 & ttyS1 > StdOut

From Avoid9Pdf@gmail.com
Newsgroups comp.os.linux.hardware, comp.sys.raspberry-pi
Subject Re: plip: StdOut > ttyS0 & ttyS1 > StdOut
Date 2013-04-03 05:35 +0000
Organization A noiseless patient Spider
Message-ID <kjgf3d$f1b$1@dont-email.me> (permalink)
References <alpine.LNX.2.02.1304021335180.30100@darkstar.example.org>

Cross-posted to 2 groups.

Show all headers | View raw

In article <alpine.LNX.2.02.1304021335180.30100@darkstar.example.org>, Michael Black <et472@ncf.ca> wrote: 

> On Tue, 2 Apr 2013, Avoid9Pdf@gmail.com wrote:
> 
> > The rPi credit-card-sized ARMbased computer which is
> > already widely distributed, has no facilites to drive VGA.
> >
> Take note that comp.sys.raspberry-pi has been approved, the creation 
> message has probably gone out by now.

Let's see if this cross-post gets there. 
> > It has however a GPIO port [?IEE488].
> > A driver for RS232 would be easy to drive the GPIO port.
> > I think plip is even simpler, and there's linux info for it.

It's IEEE488
> >
> If it's doing conversion to serial in software, then that may slow things 
> down.  THey need specific timing, which then locks out other multitasking, 
> unless things have changed from the days of Microware OS-9.  That may or 
> may not be an issue.
> 
Hardware speed is not an issue. My effort is.

> > Would it be viable to:- >
> >  connect the rPi's port to a PC's RS232-port,
> >  rPi redirect StdOut to ttyS0,
> >  PC redirect ttyS0 to StdOut ?
> >
> You set up a console that is using the RS232 port rather than  the built 
> in console.  This is easy since long before Linux came along, Unix often 
> operated this way.  Inittab is where this is done.
> 
/etc/inittab
...
# These are the standard console login getties in multiuser mode:
c1:1235:respawn:/sbin/agetty 38400 tty1 linux
...
# Local serial lines:
#s1:12345:respawn:/sbin/agetty -L ttyS0 9600 vt100

>     Michael
> 
>   > This would allow one Terminal of the LinuxPC to show
> > the rPi's output -- hopefully.
> >
> > I've got a crossover-cable RS232 to RS232.
> > Could I test the concept on a PC which has 2 RS232 ports,
> > with one port simulating the rPi?

Especially when hardware is envolved, the common method:
Doa, DoB, DoC...and it should fly;
is inferior to the method of:
 confirm the 1st stage [power LED];
 confirm 2nd stage
 ...
 confirm Nth stage 
 
 PS. what are the steps to send 8 'postponed' emails from
 alpine, FAST, once you've paid-to-go-online?

Back to comp.os.linux.hardware | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

plip: StdOut > ttyS0 & ttyS1 > StdOut Avoid9Pdf@gmail.com - 2013-04-02 14:36 +0000
  Kernel console output on the serial port for headless rPi J G Miller <miller@yoyo.ORG> - 2013-04-02 15:12 +0000
    Re: Kernel console output on the serial port for headless rPi Avoid9Pdf@gmail.com - 2013-04-03 05:35 +0000
      Re: Kernel console output on the serial port for headless rPi J G Miller <miller@yoyo.ORG> - 2013-04-03 12:04 +0000
        Re: Kernel console output on the serial port for headless rPi Unknown <dog@gmail.com> - 2013-04-03 17:56 +0000
          Re: Kernel console output on the serial port for headless rPi Gordon Henderson <gordon+usenet@drogon.net> - 2013-04-03 18:11 +0000
          Re: Kernel console output on the serial port for headless rPi J G Miller <miller@yoyo.ORG> - 2013-04-03 20:28 +0000
            Re: Kernel console output on the serial port for headless rPi Michael Black <et472@ncf.ca> - 2013-04-03 23:27 -0400
              Re: Kernel console output on the serial port for headless rPi Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2013-04-03 21:35 -0700
                Re: Kernel console output on the serial port for headless rPi Jerry Peters <jerry@example.invalid> - 2013-04-04 20:15 +0000
              Re: Kernel console output on the serial port for headless rPi Walter Bushell <proto@panix.com> - 2013-04-04 08:36 -0400
                Re: Kernel console output on the serial port for headless rPi J G Miller <miller@yoyo.ORG> - 2013-04-04 13:59 +0000
                Re: Kernel console output on the serial port for headless rPi Unknown <dog@gmail.com> - 2013-04-05 07:53 +0000
                Re: Kernel console output on the serial port for headless rPi J G Miller <miller@yoyo.ORG> - 2013-04-05 15:50 +0000
                Re: Kernel console output on the serial port for headless rPi Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2013-04-05 09:17 -0700
                Re: Kernel console output on the serial port for headless rPi Unknown <dog@gmail.com> - 2013-04-05 18:38 +0000
                Re: Kernel console output on the serial port for headless rPi The Natural Philosopher <tnp@invalid.invalid> - 2013-04-05 19:57 +0100
                Re: Kernel console output on the serial port for headless rPi "Nick B." <nick@replytoisnot.invalid> - 2013-04-05 22:12 +0000
                Re: Kernel console output on the serial port for headless rPi J G Miller <miller@yoyo.ORG> - 2013-04-05 21:24 +0000
  Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Michael Black <et472@ncf.ca> - 2013-04-02 13:43 -0400
    Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Avoid9Pdf@gmail.com - 2013-04-03 05:35 +0000
      Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2013-04-02 23:02 -0700
        Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Unknown <dog@gmail.com> - 2013-04-04 06:41 +0000
          Re: plip: StdOut > ttyS0 & ttyS1 > StdOut J G Miller <miller@yoyo.ORG> - 2013-04-04 11:53 +0000
            Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2013-04-04 08:20 -0700
            Re: plip: StdOut > ttyS0 & ttyS1 > StdOut JEDIDIAH <jedi@nomad.mishnet> - 2013-04-04 11:08 -0500
              Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2013-04-04 09:45 -0700
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Michael Black <et472@ncf.ca> - 2013-04-04 13:43 -0400
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut JEDIDIAH <jedi@nomad.mishnet> - 2013-04-04 14:43 -0500
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2013-04-04 13:43 -0700
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut JEDIDIAH <jedi@nomad.mishnet> - 2013-04-04 16:28 -0500
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2013-04-04 16:03 -0700
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Michael Black <et472@ncf.ca> - 2013-04-04 21:15 -0400
      Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Dave Higton <dave@davehigton.me.uk> - 2013-04-03 21:23 +0100
        Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Unknown <dog@gmail.com> - 2013-04-04 08:57 +0000
          Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Theo Markettos <theom+news@chiark.greenend.org.uk> - 2013-04-04 22:34 +0100
            Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Michael Black <et472@ncf.ca> - 2013-04-04 21:17 -0400
              Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Hils <hils@saynotospam.net> - 2013-04-06 13:17 +0100
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Nick Odell <gurzhfvp.jbexfubc@ntlworld.com.invalid> - 2013-04-06 14:01 +0100
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Hils <hils@saynotospam.net> - 2013-04-06 15:42 +0100
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Gordon Henderson <gordon+usenet@drogon.net> - 2013-04-06 15:31 +0000
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Michael Black <et472@ncf.ca> - 2013-04-06 11:51 -0400
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut The Natural Philosopher <tnp@invalid.invalid> - 2013-04-06 17:08 +0100
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Folderol <folderol@ukfsn.org> - 2013-04-06 17:27 +0100
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Aragorn <stryder@telenet.be.invalid> - 2013-04-06 18:28 +0200
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut The Natural Philosopher <tnp@invalid.invalid> - 2013-04-06 19:54 +0100
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Gordon Henderson <gordon+usenet@drogon.net> - 2013-04-06 17:07 +0000
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Hils <hils@saynotospam.net> - 2013-04-06 18:54 +0100
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Chris Baird <abuse@brushtail.apana.org.au> - 2013-04-07 06:10 +1000
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Folderol <folderol@ukfsn.org> - 2013-04-06 22:11 +0100
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Chris Baird <abuse@brushtail.apana.org.au> - 2013-04-07 18:01 +1000
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Michael Black <et472@ncf.ca> - 2013-04-06 20:23 -0400
                Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Unknown <dog@gmail.com> - 2013-04-07 16:42 +0000
            Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Unknown <dog@gmail.com> - 2013-04-05 06:18 +0000
          Re: plip: StdOut > ttyS0 & ttyS1 > StdOut Paul <paul@pcserviceselectronics.co.uk> - 2013-04-05 13:38 +0100

csiph-web