W3cubDocs

/PHP

dio_tcsetattr

(PHP 4 >= 4.3.0, PHP 5 < 5.1.0)

dio_tcsetattr Sets terminal attributes and baud rate for a serial port

Description

dio_tcsetattr ( resource $fd , array $options ) : bool

dio_tcsetattr() sets the terminal attributes and baud rate of the open fd.

Parameters

fd

The file descriptor returned by dio_open().

options

The currently available options are:

  • 'baud' - baud rate of the port - can be 38400,19200,9600,4800,2400,1800, 1200,600,300,200,150,134,110,75 or 50, default value is 9600.

  • 'bits' - data bits - can be 8,7,6 or 5. Default value is 8.

  • 'stop' - stop bits - can be 1 or 2. Default value is 1.

  • 'parity' - can be 0,1 or 2. Default value is 0.

Return Values

No value is returned.

Examples

Example #1 Setting the baud rate on a serial port

<?php

$fd = dio_open('/dev/ttyS0', O_RDWR | O_NOCTTY | O_NONBLOCK);

dio_fcntl($fd, F_SETFL, O_SYNC);

dio_tcsetattr($fd, array(
  'baud' => 9600,
  'bits' => 8,
  'stop'  => 1,
  'parity' => 0
)); 

while (1) {

  $data = dio_read($fd, 256);

  if ($data) {
      echo $data;
  }
} 

?>

Notes

Note: This function is not implemented on Windows platforms.

© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.dio-tcsetattr.php