中国电信CDMA无线上网卡短信收发

 /// <summary>
        /// 发送短信
        /// </summary>
        /// <param name="phone">The phone.</param>
        /// <param name="message">The message.</param>
        public static void SendMessageBySendPhone(string phone, string message)
        {
            BaseCode.BaseTerm.phone.MessageSending = true;
            string text =@"AT^HCMGS=""" + phone + @"""";
            string text2 = message;

            BaseTerm.term.SendString(text);
            BaseTerm.term.SendCtrl("CR");
            Thread.Sleep(300);
            byte[] msgbytes = Encoding.Unicode.GetBytes(text2);
            byte[] msgbytesrnd = new byte[msgbytes.Length];
            for (int i = 1; i <= msgbytes.Length; i = i + 2)
            {
                msgbytesrnd[i - 1] = msgbytes[i];
                msgbytesrnd[i] = msgbytes[i - 1];
            }

            BaseTerm.term.SendBytes(msgbytesrnd);
            BaseTerm.term.SendString("");
            BaseTerm.term.SendCtrl("CR");
        }
 

 //todo：有短信进入
                _reg = new Regex(@"\+CMTI:[\s]*""(?<Mem>[A-Z a-z 0-9_]+)""[\s]*,[\s]*(?<Index>\d+)");
                MatchCollection match = _reg.Matches(cmd);
                foreach (Match m in match)
                {
                    Console.WriteLine(m.Groups["Mem"].Value + "," + m.Groups["Index"].Value);
                    if (ShowInfo != null)
                        ShowInfo(this, "新短信，存储位置：" + m.Groups["Mem"].Value + " 索引号：" + m.Groups["Index"].Value);

                    if (MessageCNMIEvent != null)
                        MessageCNMIEvent(this, Convert.ToInt32(m.Groups["Index"].Value), m.Groups["Mem"].Value);

                    MessageCommands.GetMessageCMD(m.Groups["Index"].Value, 1);
                }

  //todo：显示短信内容
                /*
                 * 取值说明
                 * <index> 整型值，在存储器中的位置
                 * <mode> 短信状态的修改模式：
                 * 0 改变短信为已读状态
                 * 1 不改变短信的读取状态
                 * <callerID> 短消息发送方的号码
                 * <format> 表示该短消息的编码格式，取值参考^HCMGW
                 * <year, month, day, hour, minute,second>为接收到短消息时的年、月、日、小时、分钟和
                 * 秒。
                 * <Length> 接收到短消息的长度。
                 * <lang> 语言，取值参考^HCMGW
                 * <prt> 短信优先级，取值参考^HCMGW
                 * <Prv> 保密级别
                 * 0 Normal；
                 * 1 Restricted；
                 * 2 Confidential；
                 * 3 Secret
                 * <type> 短信类型
                 * 0 Normal；
                 * 1 CPT；
                 * 2 Voice Mail；
                 * 3 SMS Report
                 * <stat> 短信类型，取值参考^HCMGW
                 * <Msg> 接收到的短消息。
                 * <ctrl-Z>：标识一条短信息内容的结束，编码方式为非UNICOD方式下字符为：'0x1A'，
                 * 编码方式为UNICOD方式下字符为：'0x001A'
                 */
                //^HCMGR:07713997270,2010,02,28,10,43,50,0,6,34,2,0,0,1

                _reg = new Regex(
                    @"\r\n\^HCMGR:[\s]*(?<Caller>\d*)[\s]*,[\s]*(?<Year>\d*)[\s]*,[\s]*(?<Month>\d*)[\s]*,[\s]*(?<Day>\d*)[\s]*,[\s]*(?<Hour>\d*)[\s]*,[\s]*(?<Minute>\d*)[\s]*,[\s]*(?<Second>\d*)[\s]*,[\s]*(?<Lang>\d*)[\s]*,[\s]*(?<Format>\d*)[\s]*,[\s]*(?<Length>\d*)[\s]*,[\s]*(?<Prt>\d*)[\s]*,[\s]*(?<Prv>\d*)[\s]*,[\s]*(?<Type>\d*)[\s]*,[\s]*(?<Stat>\d*)\r\n",
                    RegexOptions.IgnoreCase);

                MatchCollection match = _reg.Matches(cmd);
                foreach (Match m in match)
                {
                    string format = m.Groups["Format"].Value;

                    int start = 0;
                    int end = 0;
                    for (int i = 0; i < bytes.Length; i++)
                    {
                        if (bytes[i].ToString() == "10" && start == 0 && i > 1)
                        {
                            start = i;
                        }
                        if (bytes[i].ToString() == "26" && end == 0)
                        {
                            end = i;
                        }
                    }
                    int len = bytes.Length - 9 - start;
                    if (len % 2 != 0) len = len - 1;
                    var msgbytes = new byte[len];
                    //Console.WriteLine("未截取：" + BitConverter.ToString(bytes));
                    Array.Copy(bytes, start + 1, msgbytes, 0, len);
                    //Console.WriteLine("转换前：" + BitConverter.ToString(msgbytes));
                    if (format == "6")
                    {
                        for (int i = 1; i <= msgbytes.Length; i = i + 2)
                        {
                            byte temp = msgbytes[i - 1];
                            msgbytes[i - 1] = msgbytes[i];
                            msgbytes[i] = temp;
                        }
                    }
                    if (MessageHCMGREvent != null)
                        MessageHCMGREvent(this, m.Groups["Caller"].Value,
                                          Convert.ToDateTime(m.Groups["Year"].Value + "-" + m.Groups["Month"].Value +
                                                             "-" +
                                                             m.Groups["Day"].Value + " " + m.Groups["Hour"].Value + ":" +
                                                             m.Groups["Minute"].Value + ":" + m.Groups["Second"].Value),
                                          Encoding.Unicode.GetString(msgbytes));
                    //Console.WriteLine("转换后："+BitConverter.ToString(msgbytes));
                    if (ShowInfo != null)
                        ShowInfo(this, m.Groups["Caller"].Value + "短信内容:" + Encoding.Unicode.GetString(msgbytes));
                    if (ShowInfo != null)
                        ShowInfo(this, "字节内容：" + BitConverter.ToString(msgbytes));
                }

 其实短信内容解码很简单，AT串口采用的是ASCII编码，短信的内容采用的是Unicode编码，并且每个字符的高低位互换了。根据规范截取出短信的内容的byte[]，进行高低位互换，在进行Encoding.Unicode.GetString，发短信反之。