CODEWITHSUNDEEP
phpport
Sunil Jose
Sunil Jose

Reputation: 325

Warning: Specified serial port is not valid in php_serial.class.php on line 127

I was tried to communicate with serial port using php, my code is,

<?php error_reporting(E_ALL); ini_set('display_errors', '1'); ?>
<?php
include "php_serial.class.php";
use phpSerial\phpSerial;
$serial = new phpSerial();
$serial->deviceSet("COM1");
$serial->confBaudRate(2400);
$serial->confParity("none");
$serial->confCharacterLength(8);
$serial->confStopBits(1);
$serial->confFlowControl("none");
$serial->deviceOpen();
$serial->sendMessage("Hello !");
$read = $serial->readPort();
$serial->deviceClose();
$serial->confBaudRate(2400);

is i needed to include my php_serial.class.php in my question ? what is the problem with my code?

Upvotes: 1

Views: 2964

Answers (2)

MajidJafari
MajidJafari

Reputation: 1110

Sometimes even when you enter the serial port correctly, you might get this error on Linux. In this case, you should give permission to read this port in the terminal by entering sudo chmod 0777 /dev/YOUR_SERIAL_PORT wich YOUR_SERIAL_PORT is your serial port, for example: ttyS0. Also, don't forget to enter sudo usermod -a -G dialout www-data to grant PHP to use the serial port.

Upvotes: 0

Jirka Hrazdil
Jirka Hrazdil

Reputation: 4021

If you work on linux, you must use a different device:

$serial->deviceSet("/dev/ttyS0"); // or /dev/ttyS1, ...

Upvotes: 2

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