PHP串口访问

Question

我正在尝试实现下面的代码，我有一个连接到COM6的wavecom gsm调制解调器它可以在第3方短信网关软件上运行，但非常昂贵。

我收到这些错误

致命错误：在第 53 行的 C:\wamp\www\sms\index.php 中未捕获异常“异常”，并显示消息“无法设置 COM 端口，检查它是否正确” ( ! ) 异常：无法设置 COM 端口，请检查 C:\wamp\www\sms\index.php 第 53 行中的设置是否正确

我需要做什么才能使这项工作成功？

<?php

//SMS via GSM Modem - A PHP class to send SMS messages via a GSM modem attached to the computers serial port.

//Windows only (tested on XP with PHP 5.2.6)
//Tested with the EZ863 (Telit GE863) GSM modem
//Requires that PHP has permission to access "COM" system device, and system "mode" command

error_reporting(E_ALL);

//Example

$gsm_send_sms = new gsm_send_sms();
$gsm_send_sms->debug = false;
$gsm_send_sms->port = 'COM6';
$gsm_send_sms->baud = 9600;
$gsm_send_sms->init();

$status = $gsm_send_sms->send('[phone]', 'testing 123');
if ($status) {
    echo "Message sent\n";
} else {
    echo "Message not sent\n";
}

$gsm_send_sms->close();







//Send SMS via serial SMS modem
class gsm_send_sms {

    public $port = 'COM6';
    public $baud = 9600;

    public $debug = false;

    private $fp;
    private $buffer;

    //Setup COM port
    public function init() {

        $this->debugmsg("Setting up port: \"{$this->port} @ \"{$this->baud}\" baud");

        exec("MODE {$this->port}: BAUD={$this->baud} PARITY=N DATA=8 STOP=1", $output, $retval);

        if ($retval != 0) {
            throw new Exception('Unable to setup COM port, check it is correct');
        }

        $this->debugmsg(implode("\n", $output));

        $this->debugmsg("Opening port");

        //Open COM port
        $this->fp = fopen($this->port . ':', 'r+');

        //Check port opened
        if (!$this->fp) {
            throw new Exception("Unable to open port \"{$this->port}\"");
        }

        $this->debugmsg("Port opened");
        $this->debugmsg("Checking for responce from modem");

        //Check modem connected
        fputs($this->fp, "AT\r");

        //Wait for ok
        $status = $this->wait_reply("OK\r\n", 5);

        if (!$status) {
            throw new Exception('Did not receive responce from modem');
        }

        $this->debugmsg('Modem connected');

        //Set modem to SMS text mode
        $this->debugmsg('Setting text mode');
        fputs($this->fp, "AT+CMGF=1\r");

        $status = $this->wait_reply("OK\r\n", 5);

        if (!$status) {
            throw new Exception('Unable to set text mode');
        }

        $this->debugmsg('Text mode set');

    }

    //Wait for reply from modem
    private function wait_reply($expected_result, $timeout) {

        $this->debugmsg("Waiting {$timeout} seconds for expected result");

        //Clear buffer
        $this->buffer = '';

        //Set timeout
        $timeoutat = time() + $timeout;

        //Loop until timeout reached (or expected result found)
        do {

            $this->debugmsg('Now: ' . time() . ", Timeout at: {$timeoutat}");

            $buffer = fread($this->fp, 1024);
            $this->buffer .= $buffer;

            usleep(200000);//0.2 sec

            $this->debugmsg("Received: {$buffer}");

            //Check if received expected responce
            if (preg_match('/'.preg_quote($expected_result, '/').'$/', $this->buffer)) {
                $this->debugmsg('Found match');
                return true;
                //break;
            } else if (preg_match('/\+CMS ERROR\:\ \d{1,3}\r\n$/', $this->buffer)) {
                return false;
            }

        } while ($timeoutat > time());

        $this->debugmsg('Timed out');

        return false;

    }

    //Print debug messages
    private function debugmsg($message) {

        if ($this->debug == true) {
            $message = preg_replace("%[^\040-\176\n\t]%", '', $message);
            echo $message . "\n";
        }

    }

    //Close port
    public function close() {

        $this->debugmsg('Closing port');

        fclose($this->fp);

    }

    //Send message
    public function send($tel, $message) {

        //Filter tel
        $tel = preg_replace("%[^0-9\+]%", '', $tel);

        //Filter message text
        $message = preg_replace("%[^\040-\176\r\n\t]%", '', $message);

        $this->debugmsg("Sending message \"{$message}\" to \"{$tel}\"");

        //Start sending of message
        fputs($this->fp, "AT+CMGS=\"{$tel}\"\r");

        //Wait for confirmation
        $status = $this->wait_reply("\r\n> ", 5);

        if (!$status) {
            //throw new Exception('Did not receive confirmation from modem');
            $this->debugmsg('Did not receive confirmation from modem');
            return false;
        }

        //Send message text
        fputs($this->fp, $message);

        //Send message finished indicator
        fputs($this->fp, chr(26));

        //Wait for confirmation
        $status = $this->wait_reply("OK\r\n", 180);

        if (!$status) {
            //throw new Exception('Did not receive confirmation of messgage sent');
            $this->debugmsg('Did not receive confirmation of messgage sent');
            return false;
        }

        $this->debugmsg("Message sent");

        return true;

    }

}

?>

Answer 1

尝试下面的代码希望有帮助， 注意：使用 php_serial.class.php

代码：

<?php


require("php_serial.class.php");


$serial = new phpSerial;

// First we must specify the device. This works on both linux and windows (if
// your linux serial device is /dev/ttyS0 for COM1, etc)
$serial->deviceSet("/dev/ttyS0");

// We can change the baud rate, parity, length, stop bits, flow control
$serial->confBaudRate(9600);
$serial->confParity("none");
$serial->confCharacterLength(8);
$serial->confStopBits(1);
$serial->confFlowControl("none");

// Then we need to open it
$serial->deviceOpen();  



// To write into
$serial->sendMessage("AT+CMGF=1\n\r"); 
$serial->sendMessage("AT+cmgs=\"[phone]x23\"\n\r");
$serial->sendMessage("Hi, This is the sms that I sent to you using PHP script with serial Port communication with my phone as serial device!! GN - VKSALIAN \n\r");
$serial->sendMessage(chr(26));

//wait for modem to send message
sleep(7);


// Or to read from
$read = $serial->readPort();
echo $read;
// If you want to change the configuration, the device must be closed
$serial->deviceClose();

?>

Answer 2

我在 Ubuntu 22.04 上遇到了同样的问题，解决方法是使用

sudo

。

进一步阅读：通过调试这个包的源代码

vendor/gregwar/php-serial/PhpSerial/PhpSerial.php:104

，我在终端中运行了

stty -F /dev/ttyUSB0

，它返回了

permission denied

，所以我发现这是一个权限问题。

要查找串行端口号，我使用了以下命令：

npx @serialport/list