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dio_tcsetattr

(PHP 4 >= 4.3.0, PHP 5 <= 5.0.4)

dio_tcsetattr --  Sets terminal attributes and baud rate for a serial port

说明

bool dio_tcsetattr ( resource fd, array options )

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

注: 本函数未在 Windows 平台下实现。

参数

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.

返回值

无返回值。

范例

例子 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 ;
  }
}

?>

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