[PD] problem with arduino digital ins - Pduino-0.5beta8 - solved!

[Ingo Scherzinger]

Thank you, Hans!

I did that now after Roman suggested it.
Turning all pullup resistors on by default is not a good idea, anyway. Power
consumption could go much higher up than USB could actually provide (no prob
here since I'm using external power).

BTW, it would be a good idea to update the pduino help file so others can
find that information.

Ingo


> -----Ursprüngliche Nachricht-----
> Von: Hans-Christoph Steiner [mailto:hans at at.or.at]
> Gesendet: Donnerstag, 1. Juli 2010 03:37
> An: Ingo Scherzinger
> Cc: pd-list at iem.at
> Betreff: Re: [PD] problem with arduino digital ins - Pduino-0.5beta8 -
solved!
> 
> 
> You can turn on the pull-up resistors from Pd by setting the pinmode
> to INPUT, then sending a [digital pin# 1( message to that pin.
> 
> .hc
> 
> On Jun 30, 2010, at 7:29 AM, Ingo Scherzinger wrote:
> 
> > Problem solved!
> >
> > I added this line to the firmata 2.1:
> >
> > digitalWrite(pin, HIGH);       // turn on pullup resistors
> >
> > in this context:
> >
> >    case INPUT:
> >      pinStatus[pin] = mode;
> >      pinMode(pin, INPUT);
> > ->   digitalWrite(pin, HIGH);       // turn on pullup resistors
> >      portStatus[port] = portStatus[port] &~ (1 << (pin - offset));
> >      break;
> >
> > exactly as described on the arduino website.
> >
> > I think this definitely needs to be included in the standard firmata!
> > Hans, don't you think so (since you're taking care of the pduino)?
> >
> > Cheers
> > Ingo
> >
> >
> >> From: "Ingo Scherzinger" <ingo at miamiwave.com>
> >> Subject: [PD] problem with arduino digital ins - Pduino-0.5beta8 /
> >> 	Firmata	2.1
> >> To: <pd-list at iem.at>
> >> Message-ID: <821D925E7C144A22B5E3EE150BAE3EAC at meincomputer>
> >> Content-Type: text/plain;	charset="us-ascii"
> >>
> >> Hi,
> >>
> >> I'm having a problem with the arduino digital ins.
> >> According to the arduino website there are pull up resistors inside
> >> the
> >> ATmega that get activated automatically when the digital ins are
> >> turned
> > on.
> >> This is not the case here with the Pduino-0.5beta8.
> >> When I connect ground to the pin it switches to 0 as expected. When I
> >> disconnect the wire it starts switching randomly between 0 and 1.
> >> If I use
> >> an "external" pullup resistor everything works as expected again.
> >> I just read the help file from the pduino and it states that this
> >> is the
> >> normal behaviour which shouldn't be the case with the internal pullup
> >> resistors activated.
> >> What's the problem with these internal pullup resistor not getting
> >> turned
> >> on?
> >> Is there a command I can (or have to) send to the arduino?
> >>
> >> I've tested this with a diecimila and duemilanove and Ubuntu 10.4 and
> >> Windows XP.
> >> Maybe there is a problem with Pduino or Firmata 2.1?
> >>
> >> Any ideas appreciated!
> >> Cheers, Ingo
> >
> >
> >
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> 
> 
>
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