控制台不显示来自串口的整个 answar [英] Console does not show the entire answar from serial port

问题描述

我正在使用移远通信的 BC66 调制解调器.在我的程序中，当我向调制解调器键入一些 AT 命令时，它无法显示来自调制解调器的整个响应，而是显示 AT 命令的回复.见下图:

I am working with BC66 modem from Quectel. On my program when I type some AT commands to the modem it can not show the entire response from the modem, but instead the reply of the AT command. see figur below:

而是使用终端程序并键入 AT 命令，我获得了请求的状态.见下图:

Instead using an terminal program and type the AT commands i got the status of my request. See figure below:

这是我在我的程序中所期望的，但不幸的是没有发生.

This is what I am expecting in my program, but unfortunately not happened.

代码截图:

static void Main(string[] args)
        {
            if (InitPort() == true)
            {
                Console.WriteLine("Port initialized");
                TestAT();
            }
        }

private static void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
     byte[] data = new byte[serialPort.BytesToRead];
     serialPort.Read(data, 0, data.Length);
     Console.WriteLine(Encoding.ASCII.GetString(data));
     //Console.WriteLine(serialPort.ReadExisting());
}

private static void TestAT()
{
     for (int i = 0; i < 10; i++)
     {
        serialPort.Write("at");
        Thread.Sleep(2000);
        serialPort.Write("at+cereg");
        Thread.Sleep(2000);
     }
}

private static bool InitPort()
        {
            serialPort.PortName = "COM51";
            serialPort.BaudRate = 115200;
            serialPort.DataBits = 8;
            serialPort.Parity = Parity.None;
            serialPort.StopBits = StopBits.One;
            serialPort.DataReceived += SerialPort_DataReceived;

            try
            {
                serialPort.Open();
                return true;
            }
            catch
            {
                return false;
            }
        }

对错误有什么建议吗?

推荐答案

如您所见 此处 在第 7 页上，您需要使用 <CR><LF> 来完成您的命令.

As you can see here on page 7 you need to finish your commands with <CR><LF>.

必须在每个命令的开头设置AT"或at"前缀线.输入 将终止命令行.

The "AT" or "at" prefix must be set at the beginning of each command line. Entering <CR> will terminate a command line.

在 C# 中等价物是 \r\n

in C# the equivalent is \r\n

正如@Mong Zhu 指出的那样，您可以通过使用serialPort.WriteLine("at");

As @Mong Zhu pointed out, you can achieve that by using serialPort.WriteLine("at");

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