Diff: hspguisourcev301/HspGuiSourceV301/HSPGui/FormConnection.cs

Revision:

3:36de8b9e4b1a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hspguisourcev301/HspGuiSourceV301/HSPGui/FormConnection.cs	Sat Apr 10 03:05:42 2021 +0000
@@ -0,0 +1,182 @@
+/*******************************************************************************
+* Copyright (C) 2016 Maxim Integrated Products, Inc., All rights Reserved.
+* 
+* This software is protected by copyright laws of the United States and
+* of foreign countries. This material may also be protected by patent laws
+* and technology transfer regulations of the United States and of foreign
+* countries. This software is furnished under a license agreement and/or a
+* nondisclosure agreement and may only be used or reproduced in accordance
+* with the terms of those agreements. Dissemination of this information to
+* any party or parties not specified in the license agreement and/or
+* nondisclosure agreement is expressly prohibited.
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+* OTHER DEALINGS IN THE SOFTWARE.
+*
+* Except as contained in this notice, the name of Maxim Integrated
+* Products, Inc. shall not be used except as stated in the Maxim Integrated
+* Products, Inc. Branding Policy.
+*
+* The mere transfer of this software does not imply any licenses
+* of trade secrets, proprietary technology, copyrights, patents,
+* trademarks, maskwork rights, or any other form of intellectual
+* property whatsoever. Maxim Integrated Products, Inc. retains all
+* ownership rights.
+*******************************************************************************
+*/
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+using System.IO.Ports;
+
+namespace HealthSensorPlatform
+{
+    public partial class FormConnection : Form
+    {
+        string port;
+        bool done = false;
+        //bool canceled = false;
+        //bool connect = false;
+
+        public bool Canceled { get; set; }
+       // public bool Connect { get; set; }
+
+        internal const Int32 WM_DEVICECHANGE = 0x219;
+        internal const Int32 DBT_DEVICEARRIVAL = 0x8000;
+        internal const Int32 DBT_DEVICEREMOVECOMPLETE = 0x8004;
+
+        public FormConnection()
+        {
+            InitializeComponent();
+            ScanPorts();
+
+            port = Properties.Settings.Default.ComPort;
+        }
+
+        private void btnConnect_Click(object sender, EventArgs e)
+        {
+            if (cboPort.SelectedItem != null)
+            {
+                port = cboPort.SelectedItem.ToString();
+
+                // Save default COM port for next application use
+                Properties.Settings.Default["ComPort"] = Port;
+                Properties.Settings.Default.Save();
+
+                done = true;
+                Close();
+            }
+            else
+            {
+                MessageBox.Show("Selected port is invalid.", "Connection");
+            }
+        }
+
+        /// <summary>
+        /// Reset the state of the connection Form.
+        /// </summary>
+        public void Reset()
+        {
+            Canceled = false;
+        }
+
+
+        /// <summary>
+        /// Returns default port saved in Properties.Settings.Default.ComPort
+        /// if port is not selected or user selected port from drop down menu
+        /// </summary>
+        /// <returns></returns>
+        public string Port
+        {
+            get { return port; }
+        }
+       
+
+        private void btnScan_Click(object sender, EventArgs e)
+        {
+            ScanPorts();
+
+        }
+
+        /// <summary>
+        /// Scan the port names
+        /// </summary>
+        public void ScanPorts()
+        {
+            string[] ports = SerialPort.GetPortNames();
+
+            cboPort.Items.Clear();
+            //cboPort.SelectedItem = null;
+            cboPort.SelectedIndex = -1;
+
+            foreach (string port in ports)
+            {
+                cboPort.Items.Add(port);
+
+                if(String.Compare(port,Properties.Settings.Default.ComPort) == 0)
+                {
+                    // Select the last used COM Port
+                    cboPort.SelectedItem = Properties.Settings.Default.ComPort;
+                }
+            }
+            
+        }
+
+        private void btnCancel_Click(object sender, EventArgs e)
+        {
+            Canceled = true;
+            done = true;
+            Close();
+        }
+
+        public bool HandleWMDeviceChangeMessage(Message m)
+        {
+            string[] ports;
+            bool removal = false;
+
+            if (m.Msg == WM_DEVICECHANGE)
+            {
+                if (m.WParam.ToInt32() == DBT_DEVICEREMOVECOMPLETE)
+                {
+                    ports = SerialPort.GetPortNames();
+
+                    foreach(string p in ports)
+                    {
+                        if (String.Compare(p, Port) == 0)
+                        {
+                            removal = true;
+                            break;
+                        }
+                    }
+                }
+
+            }
+
+            return removal;
+        }
+
+        private void FormConnection_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            // User clicked "X" button to close form,
+            // action should be the same as if user clicked on "Canceled" button
+            if (done == false)
+                Canceled = true;
+        }
+    }
+}