无法使用 AT 命令发送短信

我在用QextSerialPort访问端口

#include <qstring.h>
#include <qdebug.h>
#include <QCoreApplication>



int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QList<QextPortInfo> ports = QextSerialEnumerator::getPorts();
    QextSerialPort *port;
    QString portName;

    int counter=0;

    //Navigate through ports untill you find huwawei USB dongle
    while(counter<ports.size())
    {
     portName = ports[counter].portName;
    QString productId= ports[counter].productID;
    QString physicalName = ports[counter].physName;
    QString vendorId = ports[counter].vendorID;
    QString friendName = ports[counter].friendName;


    string convertedPortName = portName.toLocal8Bit().constData();
    string convertedProductId = productId.toLocal8Bit().constData();
    string convertedPhysicalName = physicalName.toLocal8Bit().constData();
    string convertedVendorId = vendorId.toLocal8Bit().constData();
    string convertedFriendName = friendName.toLocal8Bit().constData();

    cout << "Port Name: " << convertedPortName << endl;
    cout << "Product ID:" << convertedProductId << endl;
    cout << "Physical Name: " << convertedPhysicalName << endl;
    cout << "Vendor Id: " << convertedVendorId << endl;
    cout << "Friend Name: " << convertedFriendName << endl;
    cout << endl;
    counter++;


    //Break if you found Huwawei USB dongle, assign the port to a new port

    if (std::string::npos != convertedFriendName.find("HUAWEI Mobile Connect - 3G Modem"))
    {
      std::cout << "found!" << std::endl;
      port = new QextSerialPort(portName);
      break;
    }
    }


    //Write and send the SMS
    port->open(QIODevice::ReadWrite) ;
    cout << port->isOpen() << endl;
    port->write("AT+CFUN=1");
    port->write("AT+CMGF=1 ");
    port->write("AT+CMGS=1234567");
    port->write("Hello Test SMS");
    //port->write("0x1A");
    port->flush();

    port->close();
    cout << port->isOpen() << endl;

    system("pause");
    return 0;

}

在此代码中，我尝试使用 AT 命令发送短信。我的加密狗是华为 USB 加密狗。无论如何，它被称为“MegaFone 调制解调器”。

在我的代码中，我实际上无法发送任何短信。这是为什么？请注意，运行此代码时必须编辑电话号码。我对 QT、USB 编程和 AT 命令非常陌生。我什至不知道我是否访问了正确的端口，因为有3个端口属于华为。我的输出如下。

UPDATE

#include <qstring.h>
#include <qdebug.h>
#include <QCoreApplication>



int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QList<QextPortInfo> ports = QextSerialEnumerator::getPorts();
    QextSerialPort *port;
    QString portName;

    int counter=0;

    //Navigate through ports untill you find huwawei USB dongle
    while(counter<ports.size())
    {
     portName = ports[counter].portName;
    QString productId= ports[counter].productID;
    QString physicalName = ports[counter].physName;
    QString vendorId = ports[counter].vendorID;
    QString friendName = ports[counter].friendName;


    string convertedPortName = portName.toLocal8Bit().constData();
    string convertedProductId = productId.toLocal8Bit().constData();
    string convertedPhysicalName = physicalName.toLocal8Bit().constData();
    string convertedVendorId = vendorId.toLocal8Bit().constData();
    string convertedFriendName = friendName.toLocal8Bit().constData();

    cout << "Port Name: " << convertedPortName << endl;
    cout << "Product ID:" << convertedProductId << endl;
    cout << "Physical Name: " << convertedPhysicalName << endl;
    cout << "Vendor Id: " << convertedVendorId << endl;
    cout << "Friend Name: " << convertedFriendName << endl;
    cout << endl;
    counter++;


    //Break if you found Huwawei USB dongle, assign the port to a new port

    if (std::string::npos != convertedFriendName.find("HUAWEI Mobile Connect - 3G Modem"))
    {
      std::cout << "found!" << std::endl;
      port = new QextSerialPort(portName);
      break;
    }
    }


    //Write and send the SMS
    port->open(QIODevice::ReadWrite) ;
    cout << port->isOpen() << endl;
    port->write("AT+CFUN=1\n");
    cout << "\n";
    port->write("AT+CMGF=1 \n ");
    cout << "\n";
    port->write("AT+CMGS=0776255495\n");
    cout << "\n";
    port->write("Hello Test SMS\n");
    cout << "\n";
    //port->write("0x1A");
    port->flush();

    port->close();
    cout << port->isOpen() << endl;

    system("pause");
    return 0;

}

您的问题如下：

port->write("AT+CFUN=1");
port->write("AT+CMGF=1 ");
port->write("AT+CMGS=1234567");
port->write("Hello Test SMS");

总是在向调制解调器发送 AT 命令行后，您MUST等待最终结果代码（例如通常OKor ERROR尽管还有更多，但您必须准备好处理所有这些。关于如何等待最终结果代码的示例，可以查看源码atinout http://atinout.sourceforge.net/，这是一个小程序，用于读取 AT 命令列表，将它们发送到调制解调器并打印响应）。

因为不等待以下命令将中止当前正在执行的命令。 AT 命令的中止在 V.250 中的“5.6.1 中止命令”部分中定义。如果您对处理 AT 命令缺乏经验，那么该规范是必读的。此外，您还可以阅读 27.005 来了解您使用的 +CMG... 命令。您可以在以下位置找到规格链接：at命令标签信息 https://stackoverflow.com/tags/at-command/info.

For AT+CMGS具体来说，您还必须在发送文本之前等待“\r\n>”，请参阅我的另一个答案 https://stackoverflow.com/a/15591673/23118r.