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Re: Non-POSIX parity (mark/space) with Python-Serial on Linux.

Subject Re: Non-POSIX parity (mark/space) with Python-Serial on Linux.
From David Riley <fraveydank@gmail.com>
Date 2011-11-21 11:47 -0500
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Newsgroups comp.lang.python
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On Nov 21, 2011, at 11:28 AM, Matthew Lenz wrote:

> Using 8N1 under minicom with this device resulted in garbled text when once connected.  Connection using 7M1 resulted in the correct text.  So there must be something else that needs to be done in my python program correct?

Under minicom in 8N1, it's going to look garbled because the high bit will always be set. Minicom will try to spit out those characters anyway, which will print out whatever extended ASCII garbage your terminal supports in the 0x80-0xFF range. Programmatically, though, you can strip off the high bit when you're receiving it in Python.

"Space" parity, on the other hand, should look normal under Minicom because the high bit will always be low, giving you standard 7-bit ASCII.

- Dave

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Thread

Non-POSIX parity (mark/space) with Python-Serial on Linux. mlenz@nocturnal.org - 2011-11-21 06:00 -0800
  Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Matthew Lenz <matthew@nocturnal.org> - 2011-11-21 06:16 -0800
  Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Nizamov Shawkat <nizamov.shawkat@gmail.com> - 2011-11-21 15:26 +0100
    Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Matthew Lenz <matthew@nocturnal.org> - 2011-11-21 08:28 -0800
      Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Chris Angelico <rosuav@gmail.com> - 2011-11-22 03:41 +1100
      Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. David Riley <fraveydank@gmail.com> - 2011-11-21 11:47 -0500
        Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Matthew Lenz <matthew@nocturnal.org> - 2011-11-21 08:52 -0800
        Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Matthew Lenz <matthew@nocturnal.org> - 2011-11-21 08:52 -0800
          Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. David Riley <fraveydank@gmail.com> - 2011-11-21 12:22 -0500
            Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Matthew Lenz <matthew@nocturnal.org> - 2011-11-21 09:59 -0800
            Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Matthew Lenz <matthew@nocturnal.org> - 2011-11-21 09:59 -0800
              Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. David Riley <fraveydank@gmail.com> - 2011-11-21 13:12 -0500
          Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. MRAB <python@mrabarnett.plus.com> - 2011-11-21 18:20 +0000
      Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. gene heskett <gheskett@wdtv.com> - 2011-11-21 12:25 -0500
      Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. David Riley <fraveydank@gmail.com> - 2011-11-21 12:50 -0500
    Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Matthew Lenz <matthew@nocturnal.org> - 2011-11-21 08:28 -0800
  Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. gene heskett <gheskett@wdtv.com> - 2011-11-21 13:33 -0500
    Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Matthew Lenz <matthew@nocturnal.org> - 2011-11-21 11:29 -0800
      Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Grant Edwards <invalid@invalid.invalid> - 2011-11-21 19:42 +0000
    Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Matthew Lenz <matthew@nocturnal.org> - 2011-11-21 11:29 -0800
      Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. David Riley <fraveydank@gmail.com> - 2011-11-21 15:42 -0500
        Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Grant Edwards <invalid@invalid.invalid> - 2011-11-21 23:08 +0000
          Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Grant Edwards <invalid@invalid.invalid> - 2011-11-21 23:09 +0000
            Re: Non-POSIX parity (mark/space) with Python-Serial on Linux. Chris Angelico <rosuav@gmail.com> - 2011-11-22 11:32 +1100

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