Corey Fogarty wrote:
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.
Hi Cory,
With what device are you trying to communicate? I log the status and
usage of my gas furnace with a small photocell wired to a A-D converter
board which outputs RS232 to a Serial->USB converter then to my "server
in the closet", which stores all the data to MySQL through a php script.
The serial to usb converter, I believe, uses the "Prolific" chipset. I
also had some trouble speaking directly to the serial port. In the end,
I gave up and just wrote a C program to grab the data and output to
stdout. The PHP script captured data continuously with a:
<?php
while (1) {
$data=trim(`./checkfurnace 20 1 1`);
// write to sqldb
sleep(9);
}
?>
I also have a Lacrosse weather station on the roof that sends data
through a serial cable -> USB converter -> the same server in the
closet, and it logs data the same way.
Good luck. How are those robots coming along?
~Rolan
_______________________________________________
New York PHP Community Talk Mailing List
http://lists.nyphp.org/mailman/listinfo/talk
NYPHPCon 2006 Presentations Online
http://www.nyphpcon.com
Show Your Participation in New York PHP
http://www.nyphp.org/show_participation.php
