NYCPHP Meetup

[Corey Fogarty]

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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