#121 Space and Mark Parity has no effect

v1.0 (example)

I am using version 2.6 of pyserial under Python 3.2.2 on Windows7 32bit.

When I set parity to mark or space, there is no effect, ie, it behaves exactly as if there is no parity. My understanding is that mark and space parity is supposed to be working on Windows.


  • Chris Liechti

    Chris Liechti - 2012-08-16
    • assigned_to: nobody --> cliechti
  • Chris Liechti

    Chris Liechti - 2012-08-16

    Yes the windows API has these settings and they are used in pySerial.

    How do you determine that there is no effect? Did you look at the signals with an oscilloscope?

  • Andrew Lucas

    Andrew Lucas - 2012-09-26

    Actually with a logic analyzer. Space and mark parity have no effect.

  • Chris Liechti

    Chris Liechti - 2014-08-04
    • status: open --> closed
    • Group: --> v1.0 (example)
  • Chris Liechti

    Chris Liechti - 2014-08-04

    Closing bug as there were no updates for some time. I think pySerial applies the parity settings correctly but the driver or chip (especially when it is a USB-Serial adapter) may still ignore these settings.


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