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Groups > comp.arch.embedded > #31574

Re: Boxed MCU with RS-232 Port

From Grant Edwards <invalid@invalid.invalid>
Newsgroups comp.arch.embedded
Subject Re: Boxed MCU with RS-232 Port
Date 2023-01-19 16:07 +0000
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <tqbprt$cmk$1@reader2.panix.com> (permalink)
References <f1d09e6f-688d-4a73-9a37-a4a58de6a3a9n@googlegroups.com> <HJl*VBG8y@news.chiark.greenend.org.uk> <87ilh3try3.fsf@nightsong.com> <GJl*KBK8y@news.chiark.greenend.org.uk>

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On 2023-01-19, Theo <theom+news@chiark.greenend.org.uk> wrote:

> I'm not really surprised, because the existence of a piece of hardware
> depends on a pre-existing market for that hardware.  The market for
> RS232-to-X is well established, for various X.  But RS232 to RS232 seems
> less likely, because it's not clear what people would use it for.

The company I work for used to sell a small industrial "shoebox" PC
with 8 serial ports (232/422/485 software selectable) and a small
SSD. It had some slow Intel processor and ran Windows 7 or Linux.

It never came close to breaking even, and was carried mainly as a
convenience for customers who purchased a particular large and
profitable software product (that used serial ports) and they didn't
want to configure their own machines. 15 years ago it made sense, but
these days, everybody runs the software product on a VM and uses
Ethernet->serial interfaces for the serial ports.

The supplier stopped making the shoebox machines, and nobody had
bought any for a couple years -- so we never bothered to find a
replacement.

We also used to sell a family of small boxes with ARM CPUs, a bunch of
serial ports, and an RTOS-based software development kit. The cost of
supporting the SDK was way too high to justify for the meager sales to
customers who wanted to write their own firmware, so the SDK was
discontinued. [The boxes themselves are still sold running propritary
firmware for varioius applications.]

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Thread

Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 07:24 -0800
  Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 11:31 -0800
    Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 12:19 -0800
      Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 13:07 -0800
        Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 13:29 -0800
          Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 14:04 -0800
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 14:47 -0800
              Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 15:32 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 15:44 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 16:04 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 17:32 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 20:02 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 20:24 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 20:56 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 22:30 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-18 00:37 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-18 04:43 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-18 14:19 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-18 23:15 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-19 12:21 -0800
              Re: Boxed MCU with RS-232 Port Andrew Smallshaw <andrews@sdf.org> - 2023-01-18 12:15 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-18 04:55 -0800
                Re: Boxed MCU with RS-232 Port Andrew Smallshaw <andrews@sdf.org> - 2023-01-18 13:22 +0000
                Re: Boxed MCU with RS-232 Port Andrew Smallshaw <andrews@sdf.org> - 2023-01-18 13:28 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-18 06:20 -0800
      Re: Boxed MCU with RS-232 Port David Brown <david.brown@hesbynett.no> - 2023-01-18 10:04 +0100
  Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-01-18 16:18 +0000
    Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-18 14:10 -0800
      Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-01-19 10:29 +0000
        Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-01-19 05:41 -0700
          Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-19 10:00 -0800
            Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-19 12:42 -0800
              Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-19 14:10 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-19 16:16 -0800
        Re: Boxed MCU with RS-232 Port Grant Edwards <invalid@invalid.invalid> - 2023-01-19 16:07 +0000
          Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-19 10:13 -0800
          Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-01-19 14:51 -0700
        Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-19 10:06 -0800
          Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-01-20 13:03 +0000
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 06:28 -0800
            Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-20 19:14 -0800
              Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-01-20 20:41 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-01-21 05:05 -0700
              Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-01-21 10:53 +0000
          Re: Boxed MCU with RS-232 Port Herbert Kleebauer <klee@unibwm.de> - 2023-01-20 19:17 +0100
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 12:37 -0800
              Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-01-20 23:02 +0200
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 14:08 -0800
                Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-01-21 01:38 +0200
                Re: Boxed MCU with RS-232 Port antispam@math.uni.wroc.pl - 2023-01-21 01:58 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 18:44 -0800
                Re: Boxed MCU with RS-232 Port antispam@math.uni.wroc.pl - 2023-01-21 20:02 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-22 17:12 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-02-03 09:22 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-02-03 10:04 -0800
                Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-03-26 22:24 +0300
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 02:27 -0700
  Re: Boxed MCU with RS-232 Port pozz <pozzugno@gmail.com> - 2023-01-20 08:54 +0100
    Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 01:03 -0800
  Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-22 12:18 -0700
    Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-22 20:35 -0700
      Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-22 23:26 -0700
        Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-22 23:28 -0700
          Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-03-23 10:06 +0000
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 00:59 -0700
          Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-23 09:00 -0700
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 01:03 -0700
        Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-23 08:54 -0700
          Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 01:02 -0700
            Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 01:43 -0700
            Re: Boxed MCU with RS-232 Port Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2023-03-24 12:44 +0100
              Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-03-24 14:20 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 08:08 -0700
                Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-03-24 16:23 +0000
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 13:42 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 14:31 -0700
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 18:19 -0700
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 18:22 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 18:34 -0700
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 19:43 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 20:01 -0700
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 21:18 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-24 15:35 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 18:21 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-24 19:21 -0700
                Re: Boxed MCU with RS-232 Port George Neuner <gneuner2@comcast.net> - 2023-03-25 21:42 -0400
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-25 19:26 -0700
                Re: Boxed MCU with RS-232 Port Jim Jackson <jj@franjam.org.uk> - 2023-03-26 18:27 +0000
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:23 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:32 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:52 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:30 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 20:31 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 07:04 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 09:21 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 09:56 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 13:08 -0700
                Re: Boxed MCU with RS-232 Port Jim Jackson <jj@franjam.org.uk> - 2023-03-27 20:46 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:07 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:07 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 14:50 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:07 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:24 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:36 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:37 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:42 -0700
                Re: Boxed MCU with RS-232 Port David Brown <david.brown@hesbynett.no> - 2023-03-27 11:03 +0200
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 07:11 -0700
                Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-03-27 17:47 +0300
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 08:05 -0700
                Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-03-27 19:09 +0300
                Re: Boxed MCU with RS-232 Port David Brown <david.brown@hesbynett.no> - 2023-03-27 17:38 +0200
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:22 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:11 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:37 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:28 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 13:38 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:05 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:08 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:25 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:38 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:23 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:25 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 20:31 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 07:05 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 09:18 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 10:09 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 12:16 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 13:03 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 13:17 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:05 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:40 -0700
                Re: Boxed MCU with RS-232 Port Clifford Heath <no.spam@please.net> - 2023-03-28 10:36 +1100
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 17:59 -0700
                Re: Boxed MCU with RS-232 Port Clifford Heath <no.spam@please.net> - 2023-03-28 12:58 +1100
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 20:41 -0700
                Re: Boxed MCU with RS-232 Port Clifford Heath <no.spam@please.net> - 2023-03-28 15:21 +1100
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-28 08:37 -0700
                Re: Boxed MCU with RS-232 Port Jim Jackson <jj@franjam.org.uk> - 2023-03-28 20:00 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-28 13:06 -0700
                Re: Boxed MCU with RS-232 Port Clifford Heath <no.spam@please.net> - 2023-03-29 08:03 +1100
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-28 00:11 -0700
                Re: Boxed MCU with RS-232 Port "b...@gmx.com" <bl1@gmx.com> - 2023-03-27 16:17 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 18:12 -0700
                Re: Boxed MCU with RS-232 Port Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2023-03-24 19:26 +0100
              Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 08:03 -0700
                Re: Boxed MCU with RS-232 Port Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2023-03-24 19:10 +0100
    Re: Boxed MCU with RS-232 Port Herbert Kleebauer <klee@unibwm.de> - 2023-03-24 17:16 +0100
      Re: Boxed MCU with RS-232 Port Herbert Kleebauer <klee@unibwm.de> - 2023-03-24 18:54 +0100
      Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 11:34 -0700
  Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 10:18 -0700
  Re: Boxed MCU with RS-232 Port Uwe Bonnes <bon@hertz.ikp.physik.tu-darmstadt.de> - 2023-03-28 20:53 +0000
    Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-28 16:12 -0700
      Re: Boxed MCU with RS-232 Port Niklas Holsti <niklas.holsti@tidorum.invalid> - 2023-03-29 09:06 +0300
        Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-29 00:44 -0700

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