项目需求：由于上周机房温度过高造成机房失火，要求实现温度预警程式。
设备：感温器（串口通讯，每四秒将当前温度发送到串口）
GRPS modem （usb模拟串口通讯，通过at指令实现短信发送）
SERVER一台
at command 流程大致如下 : 1. atz (reset modem) 2. at+cpms=”MT” (select message storage) 3. at+cscs=”ASCII” (select TE character set 4. at+cmgw=0939112781 <cr> Your SMS Message here (0939112781 is my phone number, write to storage and get an index, ie 5) 5. at+cmss=5 (5 is the index you got at step 4, send message) 6. at+cmgd=5 (5 is the index you got at step 4, delete message to prevent the storage full). 核心代码: -------------------------------------------vb.net----------------------------------------------------------------------------------------- Dim Instring As String Dim Buffer$ Dim ComPORT As Integer Dim PhoneNUM As String Dim SendMSG As String ComPORT = Me.TextBox1.Text PhoneNUM = TextBox2.Text SendMSG = TextBox3.Text AxMSComm1.CommPort = ComPORT AxMSComm1.Settings = "115200,N,8,1" AxMSComm1.InputLen = 0 AxMSComm1.PortOpen = True List1.Items.Clear() Out_STR = "" AxMSComm1.Output = "atz" & Chr(13) ' 絋﹚ Call COMM1() Application.DoEvents() AxMSComm1.Output = "at+cpms=MT" & Chr(13) ' 絋﹚ Call COMM1() Application.DoEvents() AxMSComm1.Output = "at+cscs=ASCII" & Chr(13) ' 絋﹚ Call COMM1() Application.DoEvents() AxMSComm1.Output = "at+cmgw=" + Chr(34) + PhoneNUM + Chr(34) & Chr(13) ' 絋﹚ Application.DoEvents() AxMSComm1.Output = SendMSG & Chr(26) ' 絋﹚ Call COMM1() Application.DoEvents() If Out_STR <> "" Then AxMSComm1.Output = "at+cmss=" & Out_STR & Chr(13) ' 絋﹚ Call COMM1() Application.DoEvents() AxMSComm1.Output = "at+cmgd=" & Out_STR & Chr(13) ' 絋﹚ Call COMM1() Else MsgBox("Sorry,ERROR", vbOKOnly + vbCritical, "ERROR") End If AxMSComm1.PortOpen = False ----------------------------------------------------------------------------------------------------------------------------- Sub COMM1() Dim Ctn As Integer Dim Buffer$ Ctn = 0 Do Application.DoEvents() Buffer$ = Buffer$ & AxMSComm1.Input Loop Until (InStr(Buffer$, "OK" & vbCrLf)) Or (InStr(Buffer$, "ERROR" & vbCrLf)) List1.Items.Add(Buffer$) If InStr(Buffer$, "+CMGW:") Then Ctn = InStr(Buffer$, "+CMGW:") Out_STR = Trim(Mid(Buffer$, Ctn + 6, 4)) End If End Sub ---------------------------------------------------------------------------------------------------------------------------- --------c#部分代码（据说测试未通过，因我也没有设备测试所以就没继续做下去了，有兴趣可以帮忙看下错误在哪里，流程和上面的一样）--------------------- using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data; namespace WindowsApplication5{ /// <summary> /// Form1 的摘要说明。 /// </summary> public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.GroupBox groupBox1; private System.Windows.Forms.TextBox t_port; private System.Windows.Forms.Label label1; private System.Windows.Forms.Label label3; private System.Windows.Forms.TextBox t_rate; private System.Windows.Forms.Label label4; private System.Windows.Forms.TextBox t_bytesize; private System.Windows.Forms.Label label5; private System.Windows.Forms.TextBox t_stopbyte; private AxMSCommLib.AxMSComm com; public static string strIndex=""; public static string strIn=""; public string strtest=""; private System.Windows.Forms.Label label9; private System.Windows.Forms.Button button2; private System.Windows.Forms.Button button1; private System.Windows.Forms.TextBox textBox3; private System.Windows.Forms.Label label8; private System.Windows.Forms.TextBox textBox2; private System.Windows.Forms.ListBox listBox1; /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.Container components = null; public Form1() { // // Windows 窗体设计器支持所必需的 // InitializeComponent(); // // TODO: 在 InitializeComponent 调用后添加任何构造函数代码 // } /// <summary> /// 清理所有正在使用的资源。 /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows 窗体设计器生成的代码 /// <summary> /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// </summary> private void InitializeComponent() { System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1)); this.groupBox1 = new System.Windows.Forms.GroupBox(); this.button1 = new System.Windows.Forms.Button(); this.textBox3 = new System.Windows.Forms.TextBox(); this.label9 = new System.Windows.Forms.Label(); this.textBox2 = new System.Windows.Forms.TextBox(); this.label8 = new System.Windows.Forms.Label(); this.button2 = new System.Windows.Forms.Button(); this.t_port = new System.Windows.Forms.TextBox(); this.label1 = new System.Windows.Forms.Label(); this.label3 = new System.Windows.Forms.Label(); this.t_rate = new System.Windows.Forms.TextBox(); this.label4 = new System.Windows.Forms.Label(); this.t_bytesize = new System.Windows.Forms.TextBox(); this.label5 = new System.Windows.Forms.Label(); this.t_stopbyte = new System.Windows.Forms.TextBox(); this.com = new AxMSCommLib.AxMSComm(); this.listBox1 = new System.Windows.Forms.ListBox(); this.groupBox1.SuspendLayout(); ((System.ComponentModel.ISupportInitialize)(this.com)).BeginInit(); this.SuspendLayout(); // // groupBox1 // this.groupBox1.Controls.Add(this.button1); this.groupBox1.Controls.Add(this.textBox3); this.groupBox1.Controls.Add(this.label9); this.groupBox1.Controls.Add(this.textBox2); this.groupBox1.Controls.Add(this.label8); this.groupBox1.Controls.Add(this.button2); this.groupBox1.Controls.Add(this.t_port); this.groupBox1.Controls.Add(this.label1); this.groupBox1.Controls.Add(this.label3); this.groupBox1.Controls.Add(this.t_rate); this.groupBox1.Controls.Add(this.label4); this.groupBox1.Controls.Add(this.t_bytesize); this.groupBox1.Controls.Add(this.label5); this.groupBox1.Controls.Add(this.t_stopbyte); this.groupBox1.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(64)), ((System.Byte)(0))); this.groupBox1.Location = new System.Drawing.Point(8, 15); this.groupBox1.Name = "groupBox1"; this.groupBox1.Size = new System.Drawing.Size(216, 329); this.groupBox1.TabIndex = 7; this.groupBox1.TabStop = false; this.groupBox1.Text = "参数设置"; // // button1 // this.button1.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(64)), ((System.Byte)(0))); this.button1.Location = new System.Drawing.Point(112, 256); this.button1.Name = "button1"; this.button1.TabIndex = 14; this.button1.Text = "发送简讯"; this.button1.Click += new System.EventHandler(this.button1_Click); // // textBox3 // this.textBox3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.textBox3.Location = new System.Drawing.Point(96, 176); this.textBox3.Name = "textBox3"; this.textBox3.Size = new System.Drawing.Size(104, 21); this.textBox3.TabIndex = 13; this.textBox3.Text = ""; // // label9 // this.label9.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(64)), ((System.Byte)(0))); this.label9.Location = new System.Drawing.Point(8, 184); this.label9.Name = "label9"; this.label9.Size = new System.Drawing.Size(88, 16); this.label9.TabIndex = 12; this.label9.Text = "发送内容："; // // textBox2 // this.textBox2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.textBox2.Location = new System.Drawing.Point(96, 144); this.textBox2.Name = "textBox2"; this.textBox2.Size = new System.Drawing.Size(104, 21); this.textBox2.TabIndex = 11; this.textBox2.Text = ""; // // label8 // this.label8.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(64)), ((System.Byte)(0))); this.label8.Location = new System.Drawing.Point(8, 152); this.label8.Name = "label8"; this.label8.Size = new System.Drawing.Size(88, 16); this.label8.TabIndex = 10; this.label8.Text = "电话号码："; // // button2 // this.button2.FlatStyle = System.Windows.Forms.FlatStyle.Popup; this.button2.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(64)), ((System.Byte)(0))); this.button2.Location = new System.Drawing.Point(16, 256); this.button2.Name = "button2"; this.button2.TabIndex = 3; this.button2.Text = "应用设置"; this.button2.Click += new System.EventHandler(this.button2_Click); // // t_port // this.t_port.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_port.Location = new System.Drawing.Point(96, 16); this.t_port.Name = "t_port"; this.t_port.Size = new System.Drawing.Size(104, 21); this.t_port.TabIndex = 2; this.t_port.Text = "1"; // // label1 // this.label1.Location = new System.Drawing.Point(8, 24); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(72, 16); this.label1.TabIndex = 1; this.label1.Text = "串口号："; // // label3 // this.label3.Location = new System.Drawing.Point(8, 56); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(72, 16); this.label3.TabIndex = 1; this.label3.Text = "波特率："; // // t_rate // this.t_rate.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_rate.Location = new System.Drawing.Point(96, 48); this.t_rate.Name = "t_rate"; this.t_rate.Size = new System.Drawing.Size(104, 21); this.t_rate.TabIndex = 2; this.t_rate.Text = "115200"; // // label4 // this.label4.Location = new System.Drawing.Point(8, 88); this.label4.Name = "label4"; this.label4.Size = new System.Drawing.Size(72, 16); this.label4.TabIndex = 1; this.label4.Text = "数据位："; // // t_bytesize // this.t_bytesize.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_bytesize.Location = new System.Drawing.Point(96, 80); this.t_bytesize.Name = "t_bytesize"; this.t_bytesize.Size = new System.Drawing.Size(104, 21); this.t_bytesize.TabIndex = 2; this.t_bytesize.Text = "8"; // // label5 // this.label5.Location = new System.Drawing.Point(8, 120); this.label5.Name = "label5"; this.label5.Size = new System.Drawing.Size(72, 16); this.label5.TabIndex = 1; this.label5.Text = "停止位："; // // t_stopbyte // this.t_stopbyte.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_stopbyte.Location = new System.Drawing.Point(96, 112); this.t_stopbyte.Name = "t_stopbyte"; this.t_stopbyte.Size = new System.Drawing.Size(104, 21); this.t_stopbyte.TabIndex = 2; this.t_stopbyte.Text = "1"; // // com // this.com.Enabled = true; this.com.Location = new System.Drawing.Point(240, 336); this.com.Name = "com"; this.com.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("com.OcxState"))); this.com.Size = new System.Drawing.Size(38, 38); this.com.TabIndex = 9; // // listBox1 // this.listBox1.ItemHeight = 12; this.listBox1.Location = new System.Drawing.Point(232, 24); this.listBox1.Name = "listBox1"; this.listBox1.Size = new System.Drawing.Size(216, 304); this.listBox1.TabIndex = 10; // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); this.ClientSize = new System.Drawing.Size(456, 390); this.Controls.Add(this.listBox1); this.Controls.Add(this.com); this.Controls.Add(this.groupBox1); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); this.groupBox1.ResumeLayout(false); ((System.ComponentModel.ISupportInitialize)(this.com)).EndInit(); this.ResumeLayout(false); } #endregion /// <summary> /// 应用程序的主入口点。 /// </summary> [STAThread] static void Main() { Application.Run(new Form1()); } public bool send_at_command(string strCmd, string strData) { int i, j; string strSUB = "/x1A"; bool blnSucc = false; com.Output=strCmd.Trim(); strtest=strtest + com.Input; listBox1.Items.Add(strtest); if (strData != null) { com.Output = strData+strSUB; strtest=strtest + com.Input; listBox1.Items.Add(strtest); } for (i = 0; i < 200000; i++) { strIn = strIn + com.Input; if (strIn.IndexOf("OK") != 0) { blnSucc = true; break; } if (strIn.IndexOf("ERR") != 0) break; } // get index if ((strData != null) && (blnSucc == true)) { i = strIn.IndexOf("+CMGW:"); listBox1.Items.Add(i); j = strIn.Length; listBox1.Items.Add(j); if (i!= 0) { listBox1.Items.Add(strIn);// strIn = strIn.Substring(i+6,3);// listBox1.Items.Add(strIn);// j = strIn.IndexOf(strLF);// strIndex = strIn.Substring(1, j-1); strIndex=strIn.Trim(); } } return blnSucc; } private void Form1_Load(object sender, System.EventArgs e) { } private void button2_Click(object sender, System.EventArgs e) { try { com.CommPort =Convert.ToInt16(t_port.Text.Trim()); if (com.PortOpen) com.PortOpen = false; com.Settings = "115200,N,8,1"; com.InputLen = 0; com.PortOpen = true; MessageBox.Show("Comm Port Open Success!","Warning",MessageBoxButtons.OK,MessageBoxIcon.Warning); } catch { MessageBox.Show("Comm Port Not Open!","Warning",MessageBoxButtons.OK,MessageBoxIcon.Warning); } } private void button1_Click(object sender, System.EventArgs e) { string myphone=textBox2.Text.Trim(); string mycontext=textBox3.Text.Trim(); sms_send_msg(myphone,mycontext); } public bool sms_send_msg(string phone_no, string msg) { string strcmd; strIndex = ""; // reset strcmd = "atz"+"/r"; if (send_at_command(strcmd, null) != true) return false; // select message stroage strcmd = "at+cpms=/"MT/""+"/r"; if (send_at_command(strcmd, null) != true) return false; // select TE character set strcmd = "at+cscs=/"ASCII/""+"/r"; if (send_at_command(strcmd, null) != true) return false; // write to stroage strcmd = "at+cmgw=" ; strcmd += "/""; strcmd += phone_no; strcmd += "/""; strcmd += "/r"; if (send_at_command(strcmd, msg) != true) return false; if (strIndex != "") { // send message strcmd = "at+cmss="+strIndex+"/r"; if (send_at_command(strcmd, null) != true) return false; // delete message strcmd = "at+cmgd="+strIndex+"/r"; if (send_at_command(strcmd, null) != true) return false; } else return false; return true; } } } --------------------------------------------------------------------------------------------------------------------------------