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Re: When 0x0d become 0x0a

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On Thursday 13 February 2014 19:39, in comp.os.linux.embedded, "Les Cargill"
<lcargill99@comcast.com> wrote:

> I'm porting some code from one Linux to another. It uses serial ports.
> 
> As opened, the serial port converts 0x0d characters to 0x0a characters.
> 
> I have done some googling to find which *opts() functions control
> setting the file referred to by the handle for the serial port
> to be a pure, binary file. I see the one that turns off this conversion,
> but I want all characters to be received completely untrammelled.
> 
> I also need to use fopen()... fclose(), so ORed together last-argument
> things in open() are out.

I'm afraid that if you need such tight control of the serial-port data, you
are probably going to have to work with low-level file I/O, at least a bit.

Specifically, you are going to need the fd of your FILE * file (use POSIX
fileno(3) to retrieve), and either the termios(3) tcgetattr()/tcsetattr()
calls, or the ioctl(2) tty calls. You want to change the line conditioning
of your serial port from COOKED or CBREAK mode to RAW mode.


> What's a good website that shows *all* the serial port options for Linux?

Sorry, I can't help you there. I don't know of any website that shows all
the serial port options for Linux.

However, the tty_ioctl(4), ioctl(2), and termios(3) manpages should help
you.

HTH
-- 
Lew Pitcher
"In Skills, We Trust"
PGP public key available upon request

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Thread

When 0x0d become 0x0a Les Cargill <lcargill99@comcast.com> - 2014-02-13 18:39 -0600
  Re: When 0x0d become 0x0a Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2014-02-13 20:49 -0500
    Re: When 0x0d become 0x0a Les Cargill <lcargill99@comcast.com> - 2014-02-14 00:27 -0600
  Re: When 0x0d become 0x0a Grant Edwards <invalid@invalid.invalid> - 2014-02-14 04:06 +0000
    Re: When 0x0d become 0x0a Les Cargill <lcargill99@comcast.com> - 2014-02-14 21:19 -0600
      Re: When 0x0d become 0x0a Grant Edwards <invalid@invalid.invalid> - 2014-02-15 04:31 +0000
        Re: When 0x0d become 0x0a Przemek Klosowski <przemek@tux.dot.org> - 2014-04-11 00:57 +0000
          Re: When 0x0d become 0x0a Les Cargill <lcargill99@comcast.com> - 2014-04-12 16:40 -0500
        Re: When 0x0d become 0x0a Les Cargill <lcargill99@comcast.com> - 2014-04-12 16:36 -0500
          Re: When 0x0d become 0x0a Grant Edwards <invalid@invalid.invalid> - 2014-04-14 16:46 +0000
            Re: When 0x0d become 0x0a Les Cargill <lcargill99@comcast.com> - 2014-04-14 12:48 -0500
              Re: When 0x0d become 0x0a Grant Edwards <invalid@invalid.invalid> - 2014-04-14 18:56 +0000
                Re: When 0x0d become 0x0a Les Cargill <lcargill99@comcast.com> - 2014-04-14 20:16 -0500
                Re: When 0x0d become 0x0a Grant Edwards <invalid@invalid.invalid> - 2014-04-15 15:15 +0000
  Re: When 0x0d become 0x0a David <no@spam.please> - 2014-02-14 13:13 +0000

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