serialpl2303.device can only receive but not send
  • Order of the Butterfly
    Order of the Butterfly
    asrael22
    Posts: 404 from 2014/6/11
    From: Germany
    Hi.

    I need serial communication for a project.
    In my test setup: Plugable USB-serial adapter (pl2303) on MorphOS <-> Keyspan USB-serial adapter on iMac.
    MorphOS running Term-4.8, iMac running ZTerm or Minicom.

    It seems that the MorphOS side can only receive data but not send.
    Typing in ZTerm I can see the text on Term but not vise versa.

    I've checked the Plugable adapter on Linux (using Minicom) where the communication is OK in both directions.

    Is there some way to debug the MorphOS side to see if there is a problem somewhere?



    Manfred
  • »04.08.14 - 15:35
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  • Order of the Butterfly
    Order of the Butterfly
    asrael22
    Posts: 404 from 2014/6/11
    From: Germany
    Similarly I see this issues in my little c program.
    Doing read via DoIO() reads from serial. But writing via DoIO() writes nothing or at least nothing gets transmitted to the other end.


    Manfred
  • »04.08.14 - 18:31
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  • Order of the Butterfly
    Order of the Butterfly
    asrael22
    Posts: 404 from 2014/6/11
    From: Germany
    I've recompiled my little program on AROS (IcAROS 1.5.2).
    The same code (just includes have changed a bit).
    VM with IcAROS on iMac with Plugable USB-serial adapter <-> Keyspan on iMac.
    Both send and receive work.

    So I'm wondering whether this might be a bug in MorphOS or Poseidon?


    Manfred
  • »05.08.14 - 09:37
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  • Acolyte of the Butterfly
    Acolyte of the Butterfly
    Jeckel
    Posts: 133 from 2007/3/11
    I've already reported this bug some times ago.

    It seems to be a bug in Poseidon driver since it does not work on Amiga either (tested on Amiga 1200 + SubWay + latest Poseidon).

    As a work around I used a cp210x device which works nicely.

    [ Edited by Jeckel 05.08.2014 - 12:14 ]
  • »05.08.14 - 13:10
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  • Order of the Butterfly
    Order of the Butterfly
    asrael22
    Posts: 404 from 2014/6/11
    From: Germany
    Where can bug be reported?
    Is there a public bug tracker?


    Manfred
  • »05.08.14 - 13:21
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  • Order of the Butterfly
    Order of the Butterfly
    asrael22
    Posts: 404 from 2014/6/11
    From: Germany
    I would think though the AROS and MorphOS sources for the USB stack are not that far off.
    The AROS serialpl2303.device seems to work.


    Manfred
  • »05.08.14 - 13:44
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  • Just looking around
    Wizard
    Posts: 6 from 2014/7/31
    From: Łódź, Poland
    Quote:

    asrael22 wrote:
    Where can bug be reported?
    Is there a public bug tracker?


    Manfred


    You can report bugs from within MorphOS: Ambient menu -> About MorphOS -> Support -> Send bug report
    Remember to be precise and describe how to reproduce this bug.

    Edit: As far as I know, there is no public bugtracker and this is the recommended way.

    [ Edited by Wizard 05.08.2014 - 14:03 ]
  • »05.08.14 - 15:02
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