On 2011-07-09 08:48, Pierre Massat wrote:
UPDATE : comport is now working as expected, and my arduino uno board is
now friends with my USB soundcard.


So what was the problem?


I guess it's high time i started reading the first volume of Harry Potter.


Maybe read some Crowley about banishing daemons before plugging in...

Martin


Pierre

2011/7/9 Ingo <[email protected] <mailto:[email protected]>>

    Similar problem here. I had an Arduino (USB) and a LCD display (RS232)
    working together very well with two [comport] objects on my old
    mainboard.
    With the new board either one by themselves is working fine but both
    of them
    connected bidirectional doesn't work. As soon as I connect the serial in
    from the display (which is supposed to get the keypad of the serial
    display)
    I get a lots of crazy data coming in. After a while either [comport]
    or Pd
    altogether crashes.

    The LCD [comport] should only receive digital buttons on/off. While the
    arduino sends buttons plus four analogue INs from a joystick and two
    foot
    pedals.
    All cables are very short, so the problematic behaviour can't be
    caused by
    the cable length. Without connecting the serial out of the display
    to the
    serial in of the computer everything works fine.

    I was also suspecting an error in comport where the data of two
    instances of
    two [comport] objects get mixed up. It looks like the analogue data
    from the
    arduino board gets forwarded to the second RS232 [comport] of the LCD.

    Ingo


    ________________________________________
    Von: [email protected] <mailto:[email protected]>
    [mailto:[email protected] <mailto:[email protected]>] Im
    Auftrag von
    Pierre Massat
    Gesendet: Samstag, 9. Juli 2011 13:38
    An: pd-list
    Betreff: [PD] Comport can't read serial devices when soundcard is
    plugged in

    Hi all!

    After having had to deal with a "bug" in pduino (see Arduin is drivin me
    mad), i wrote a small sketch for the board and a patch using
    comport. It was
    working fine until i decided to actually try it with my audio patch.
    It turns out that my external USB soundcard prevents comport from
    working
    properly. It can't open the arduino board, and can't event detect serial
    devices ("devices" yields an empty message in the console). As soon as i
    unplug the soundcard, everything works fine again.

    I think i'm beginning to realize that a lot of things have to be
    taken care
    off, and i know that my patch and sketch are way to simple to take
    this kind
    of issue into account (i wish i could switch back to Pduino and
    firmata).

    So my question is : is this behaviour normal, or is it bug in comport?

    Thanks!

    Pierre




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