Hello Corey,
Did you try running sudo <command>
Maybe you need root to write to serial...
- Ben
Corey Fogarty wrote:
Hi again,
I spoke with Keyspan and they assured me the USB to Serial device was
working if I could use the Screen tool.
I asked why I was unable to redirect stdin/stdout to and from the
/dev/tty. device and was told there was no reason I shouldn’t be able
to do so.
I have tried:
#echo “A” > /dev/ tty.USA28Xb2P1.1
The terminal window just hangs.
I have also tried #chat and #efax with no luck...
Has anyone had any luck with serial port communication from any other
shell scripting language on a unix/linux box?
Thanks!
Corey
Subject: [nyphp-talk] Serial communication in Mac OS X
To: <[EMAIL PROTECTED]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="us-ascii"
Hi All,
I am trying to connect to /dev/tty.USA28Xb2P1.1 which is a Keyspan
USB to
Serial adapter. I have had success using the screen utility, #screen
/dev/tty.USA28Xb2P1.1 but I would like to use PHP to create a web
interface
to a microcontroller.
I have attempted fopen with no luck:
> $port = "/dev/tty.USA28Xb2P1.1";
>
> $p = fopen($port, 'r+');
> $read = fread($p, filesize($port));
> fclose($p);
>
> echo $read;
>
> $p = fopen($port, 'r+');
> fwrite($p, "A");
> fclose($p);
I have tried SerProxy but cannot get a connection through telnet.
I have
also tried LibSerial but could only find version 0.5.2 which does
not yet
support PHP apparently... I have read about IOKit but I am not
sure it will
get me where I want to be.
Any help would be greatly appreciated.
Thank you!
Corey
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_______________________________________________
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http://www.nyphpcon.com
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http://www.nyphp.org/show_participation.php
