wavecom电信（CDMA MODEM）3G短信设备C#收发中文短信例子 - 深圳市未来时代科技有限公司

private System.IO.Ports.SerialPort _com= new System.IO.Ports.SerialPort();
_com.Write("AT+WSCL=6,4\r");
_com.Write("AT+CMGF=1\r");
void SendMsgByCDMA(string phone, string msg)
{
string tmp = string.Empty;
//发送的内容转为byte
byte[] b = Encoding.BigEndianUnicode.GetBytes(msg);
//cdma使用文本方式发送短信，因此每次只能发70个字符
int j = b.Length / 140;
System.Collections.Generic.List<byte[]> c = new System.Collections.Generic.List<byte[]>();
//短信进行拆分
for (int i = 0; i <= j; i++)
{
int index = 0;
int length = 140;
if (b.Length < 140)
length = b.Length;
if (i == j)
length = b.Length - length * i;
if (length == 0)
continue;
if (i != 0)
index = i * 140;
byte[] temp = new byte[length];
Array.Copy(b, index, temp, 0, length);
c.Add(temp);
}
//CDMA的AT命令手机号码前面不能加86，否则虽然显示成功发送，但短信中心回应错误代码5
if (phone.IndexOf("86") == 0)
{
phone = phone.Substring(2);
}
try
{
foreach (byte[] item in c)
{
//设置发送的号码和发送内容字节长度
_com.Write("AT+CMGS=\"" + phone + "\"," + item.Length + "\r");
Thread.Sleep(50);
//写入
_com.Write(item, 0, item.Length);
//写入CTRL+Z结束短信内容，注意在UNICODE模式下需要两个字节，这个也是不能在超级终端下操作的原因,如果write中指明length的话可以不用发送
//byte[] b2 = new byte[] { 0x00, 0x1a };
//_com.Write(b2, 0, b2.Length);
///等到运营商反馈收到命令
_com.ReadTo("+CDS:");
_com.DiscardInBuffer();
}
}
catch (Exception)
{
throw new Exception("短信发送失败");
}
}

复制代码

public string ReadNewMsgByCdma(int index)
{
string result = string.Empty;
//读消息前先要注销端口消息事件
_com.DataReceived -= sp_DataReceived;
try
{
_com.DiscardInBuffer();
_com.Write("AT+CMGR=" + index.ToString() + "\r");
byte[] buffer = new byte[_com.ReadBufferSize + 1]; //建立缓冲区大小的byte[]
//读取缓冲区所有的byte
int count = _com.Read(buffer, 0, _com.ReadBufferSize);
//去掉空字节
Array.Resize<byte>(ref buffer, count);
//缓冲区读出来的内容比较多包涵了：\r \n \0 | OK 等字符，使用readerLine()读数据都是\r结尾，所以根据它再分组
List<byte[]> tempList = Split(buffer, System.Text.Encoding.ASCII.GetBytes("\r")[0]);
///转码
//读出来的短信分组后一般count为4，第3条为短信正文，
//非短信正文使用ascii进行读取，System.Text.Encoding.ASCII.GetString(tempList[0]);
//短信正文使用Unicode读取 System.Text.Encoding.BigEndianUnicode.GetString(tempList[2]);
}
catch (Exception)
{
_com.DataReceived += sp_DataReceived;
throw;
}
return result;
}
/// <summary>
/// 根据\r对byte进行分组
/// </summary>
/// <param name="array"></param>
/// <param name="splitVale"></param>
/// <returns></returns>
List<byte[]> Split(byte[] array, byte splitVale)
{
List<byte[]> objList = new List<byte[]>();
int i = Array.IndexOf(array, splitVale);
while (i >= 0)
{
byte[] temp = new byte[i + 1];
Array.ConstrainedCopy(array, 0, temp, 0, i + 1);
byte[] bt = new byte[array.Length - temp.Length - 1];
Array.Copy(array, temp.Length + 1, bt, 0, bt.Length);
array = bt;
objList.Add(temp);
i = Array.IndexOf(array, splitVale);
}
return objList;
}

复制代码