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Re: pyserial and threads

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Date Thu, 17 Sep 2015 19:42:08 +1000
Subject Re: pyserial and threads
From Chris Angelico <rosuav@gmail.com>
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On Thu, Sep 17, 2015 at 7:28 PM, pozz <pozzugno@gmail.com> wrote:
> At startup I open the ports and create and start a thread to manage the
> receiving. When a byte is received, I call the .write() method for all the
> other ports.
>
> It works, but sometimes it seems to block. I think I haven't used correctly
> the threads.
>

Seems a fairly reasonable model. From what I'm seeing here, you start
a thread to read from each serial port, but then those threads will
make blocking writes to all the other serial ports. Is it possible
that one of them is getting full?

When I do this kind of thing with TCP/IP sockets, I usually end up
having to go non-blocking in both directions, and maintaining a buffer
of unsent text for each socket. You may find that you need to do the
same thing here.

Where's the code getting blocked?

ChrisA

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Thread

pyserial and threads pozz <pozzugno@gmail.com> - 2015-09-17 11:28 +0200
  Re: pyserial and threads Chris Angelico <rosuav@gmail.com> - 2015-09-17 19:42 +1000
    Re: pyserial and threads pozz <pozzugno@gmail.com> - 2015-09-17 15:26 +0200
      Re: pyserial and threads Chris Angelico <rosuav@gmail.com> - 2015-09-17 23:45 +1000
  Re: pyserial and threads alister <alister.nospam.ware@ntlworld.com> - 2015-09-17 12:00 +0000
    Re: pyserial and threads Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-09-17 09:04 -0400
      Re: pyserial and threads pozz <pozzugno@gmail.com> - 2015-09-17 15:23 +0200
    Re: pyserial and threads pozz <pozzugno@gmail.com> - 2015-09-17 15:22 +0200

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