[PD] Comport problem with Arduino: 13 is coming in as 10

[Christof Ressi]

> That should disable all postprocessing of traffic.

I think the problem is input processing, look at the flags set by cfmakeraw (http://man7.org/linux/man-pages/man3/tcflow.3.html), they explicitly disable CR/NL transformation:

termios_p->c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
                           | INLCR | IGNCR | ICRNL | IXON);

I don't know what's the default value for c_iflag, but I suppose it's platform specific. maybe [comport] could just do cfmakeraw(), to make sure it is really in raw mode.

Christof

Gesendet: Dienstag, 14. Mai 2019 um 15:32 Uhr
Von: "Martin Peach" <chakekatzil at gmail.com>
An: "pd-list at lists.iem.at" <pd-list at lists.iem.at>
Betreff: Re: [PD] Comport problem with Arduino: 13 is coming in as 10

It's odd that the lines
 

/* no post processing */
new->c_oflag &= ~OPOST;
 and
 

/* always nocanonical, this means raw i/o no terminal */
new->c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);

_are_ present in open_serial() in comport.c.That should disable all postprocessing of traffic.
Martin 

On Tue, May 14, 2019 at 7:58 AM Roman Haefeli <reduzent at gmail.com[mailto:reduzent at gmail.com]> wrote:On Tue, 2019-05-14 at 13:27 +0200, Christof Ressi wrote:
> > > So, neither the OS nor the Pd or [comport] version seem to make
> > > any
> >
> > difference.
>
> check my last two mails, I think this is macOS/Linux issue. can you
> try my fix?

Yeah, I will when I have access to an Arduino (or other serial device)
and report back. Thanks for looking into this.

Roman
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