从串行端口到PHP文件是否可能被命中
我的机器通过串行端口连接到我的系统。当机器通过串口触发一条消息时,我必须点击一个PHP文件,这可能吗?从串行端口到PHP文件是否可能被命中,php,port,Php,Port,我的机器通过串行端口连接到我的系统。当机器通过串口触发一条消息时,我必须点击一个PHP文件,这可能吗?dioPHP扩展是您需要的。您可以这样安装它 sudo pecl install dio-0.0.7 这是一个代码示例: <?php //-- settings --// //brainboxes serial ports //on 'nix start with cu.usbserial- //on windows starts with com : must be lower c
dio
PHP扩展是您需要的。您可以这样安装它
sudo pecl install dio-0.0.7
这是一个代码示例:
<?php
//-- settings --//
//brainboxes serial ports
//on 'nix start with cu.usbserial-
//on windows starts with com : must be lower case in windows and end with a colon
$portName = 'com9:';
$baudRate = 9600;
$bits = 8;
$spotBit = 1;
header( 'Content-type: text/plain; charset=utf-8' );
?>
Serial Port Test
================
<?php
function echoFlush($string)
{
echo $string . "\n";
flush();
ob_flush();
}
if(!extension_loaded('dio'))
{
echoFlush( "PHP Direct IO does not appear to be installed for more info see: http://www.php.net/manual/en/book.dio.php" );
exit;
}
try
{
//the serial port resource
$bbSerialPort;
echoFlush( "Connecting to serial port: {$portName}" );
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN')
{
$bbSerialPort = dio_open($portName, O_RDWR );
//we're on windows configure com port from command line
exec("mode {$portName} baud={$baudRate} data={$bits} stop={$spotBit} parity=n xon=on");
}
else //'nix
{
$bbSerialPort = dio_open($portName, O_RDWR | O_NOCTTY | O_NONBLOCK );
dio_fcntl($bbSerialPort, F_SETFL, O_SYNC);
//we're on 'nix configure com from php direct io function
dio_tcsetattr($bbSerialPort, array(
'baud' => $baudRate,
'bits' => $bits,
'stop' => $spotBit,
'parity' => 0
));
}
if(!$bbSerialPort)
{
echoFlush( "Could not open Serial port {$portName} ");
exit;
}
// send data
$dataToSend = "HELLO WORLD!";
echoFlush( "Writing to serial port data: \"{$dataToSend}\"" );
$bytesSent = dio_write($bbSerialPort, $dataToSend );
echoFlush( "Sent: {$bytesSent} bytes" );
//date_default_timezone_set ("Europe/London");
$runForSeconds = new DateInterval("PT10S"); //10 seconds
$endTime = (new DateTime())->add($runForSeconds);
echoFlush( "Waiting for {$runForSeconds->format('%S')} seconds to recieve data on serial port" );
while (new DateTime() < $endTime) {
$data = dio_read($bbSerialPort, 256); //this is a blocking call
if ($data) {
echoFlush( "Data Recieved: ". $data );
}
}
echoFlush( "Closing Port" );
dio_close($bbSerialPort);
}
catch (Exception $e)
{
echoFlush( $e->getMessage() );
exit(1);
}
?>
dio
php扩展是您所需要的。您可以这样安装它
sudo pecl install dio-0.0.7
这是一个代码示例:
<?php
//-- settings --//
//brainboxes serial ports
//on 'nix start with cu.usbserial-
//on windows starts with com : must be lower case in windows and end with a colon
$portName = 'com9:';
$baudRate = 9600;
$bits = 8;
$spotBit = 1;
header( 'Content-type: text/plain; charset=utf-8' );
?>
Serial Port Test
================
<?php
function echoFlush($string)
{
echo $string . "\n";
flush();
ob_flush();
}
if(!extension_loaded('dio'))
{
echoFlush( "PHP Direct IO does not appear to be installed for more info see: http://www.php.net/manual/en/book.dio.php" );
exit;
}
try
{
//the serial port resource
$bbSerialPort;
echoFlush( "Connecting to serial port: {$portName}" );
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN')
{
$bbSerialPort = dio_open($portName, O_RDWR );
//we're on windows configure com port from command line
exec("mode {$portName} baud={$baudRate} data={$bits} stop={$spotBit} parity=n xon=on");
}
else //'nix
{
$bbSerialPort = dio_open($portName, O_RDWR | O_NOCTTY | O_NONBLOCK );
dio_fcntl($bbSerialPort, F_SETFL, O_SYNC);
//we're on 'nix configure com from php direct io function
dio_tcsetattr($bbSerialPort, array(
'baud' => $baudRate,
'bits' => $bits,
'stop' => $spotBit,
'parity' => 0
));
}
if(!$bbSerialPort)
{
echoFlush( "Could not open Serial port {$portName} ");
exit;
}
// send data
$dataToSend = "HELLO WORLD!";
echoFlush( "Writing to serial port data: \"{$dataToSend}\"" );
$bytesSent = dio_write($bbSerialPort, $dataToSend );
echoFlush( "Sent: {$bytesSent} bytes" );
//date_default_timezone_set ("Europe/London");
$runForSeconds = new DateInterval("PT10S"); //10 seconds
$endTime = (new DateTime())->add($runForSeconds);
echoFlush( "Waiting for {$runForSeconds->format('%S')} seconds to recieve data on serial port" );
while (new DateTime() < $endTime) {
$data = dio_read($bbSerialPort, 256); //this is a blocking call
if ($data) {
echoFlush( "Data Recieved: ". $data );
}
}
echoFlush( "Closing Port" );
dio_close($bbSerialPort);
}
catch (Exception $e)
{
echoFlush( $e->getMessage() );
exit(1);
}
?>
但是在这种情况下需要手动触发php文件,对吗?要使其自动,您需要实现javascript代码来调用能够定期读取的php代码。但是在这种情况下需要手动触发php文件,对吗?要使其自动,您需要实现javascript代码来调用能够定期读取的php代码可以定期阅读。