2017-03-08 99 views
0

我在C#中的初學者和不斷收到此錯誤「CS1501沒有重載方法‘GetDeviceSelector’需要兩個參數」無重載方法「GetDeviceSelector」需要兩個參數

Visual Studio中建議修改SerialDevice.GetDeviceSelector(vid, pid)SerialDevice.GetDeviceSelectorFromUsbVidPid(vid, pid)

這個工作,但是當我在Windows 10上我的樹莓派3運行調試物聯網核心,它返回: Exception thrown: 'System.ArgumentOutOfRangeException' in mscorlib.ni.dll Specified argument was out of the range of valid values. Parameter name: index

我的目標是我的Arduino連接到我的覆盆子pi和通過串口與它通信。 (我不想用微軟製作的東西)

下面是完整的代碼:

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Net.Http; 
using Windows.ApplicationModel.Background; 
using Windows.Devices.SerialCommunication; 
using Windows.Devices.Enumeration; 
using System.Diagnostics; 

// The Background Application template is documented at http://go.microsoft.com/fwlink/?LinkID=533884&clcid=0x409 

namespace BackgroundApplication1 
{ 
    public sealed class StartupTask : IBackgroundTask 
    { 
     //private String debugtest; 
     private SerialDevice serialDevice = null; 



    public void Run(IBackgroundTaskInstance taskInstance) 
    { 
     // 
     // TODO: Insert code to perform background work 
     // 
     // If you start any asynchronous methods here, prevent the task 
     // from closing prematurely by using BackgroundTaskDeferral as 
     // described in http://aka.ms/backgroundtaskdeferral 
     // 
     FindDevice(); 
     Debug.WriteLine("test1"); 
    } 

    /*private async void ListAvailablePorts() 
    { 
     UInt32 vid = 0x045E; 
     UInt32 pid = 0x0611; 
     try 
     { 
      string aqs = SerialDevice.GetDeviceSelector(vid, pid); 
      var dis = await DeviceInformation.FindAllAsync(aqs); 

      //status.Text = "Select a device and connect"; 

      for (int i = 0; i < dis.Count; i++) 
      { 
       listOfDevices.Add(dis[i]); 
      } 

      DeviceListSource.Source = listOfDevices; 
      comPortInput.IsEnabled = true; 
      ConnectDevices.SelectedIndex = -1; 
     } 
     catch (Exception ex) 
     { 
      status.Text = ex.Message; 
     } 
    }*/ 

    private async void FindDevice() 
    { 
     Debug.WriteLine("begintest"); 
     ushort vid = 2341; 
     ushort pid = 0001; 

     string aqs = SerialDevice.GetDeviceSelectorFromUsbVidPid(vid, pid); 

     var myDevices = await Windows.Devices.Enumeration.DeviceInformation.FindAllAsync(aqs); 

     try 
     { 
      serialDevice = await SerialDevice.FromIdAsync(myDevices[0].Id); 

      Debug.WriteLine("ok"); 

      /*serialDevice.WriteTimeout = TimeSpan.FromMilliseconds(1000); 
      serialDevice.ReadTimeout = TimeSpan.FromMilliseconds(1000); 
      serialDevice.BaudRate = 9600; 
      serialDevice.Parity = SerialParity.None; 
      serialDevice.StopBits = SerialStopBitCount.One; 
      serialDevice.DataBits = 8; 
      serialDevice.Handshake = SerialHandshake.None; 

      String debugtest = "Serial port configured successfully: "; 
      debugtest += serialDevice.BaudRate + "-"; 
      debugtest += serialDevice.DataBits + "-"; 
      debugtest += serialDevice.Parity.ToString() + "-"; 
      debugtest += serialDevice.StopBits; 
      //debugtest += (DeviceInformation)myDevices[0]; 

      Debug.WriteLine(debugtest);*/ 
     } 
     catch (Exception exception) 
     { 
      Debug.WriteLine(exception.Message.ToString()); 
      Debug.WriteLine("error"); 
     } 
     finally   
     { 
      Debug.WriteLine("Opened device for communication.");    
      Debug.WriteLine("test"); 
     } 
     Debug.WriteLine("test2"); 
    } 

    /*private void ShowStatus(string v) 
    { 
     throw new NotImplementedException(); 
    }*/ 
    } 
} 

編輯:我改變了一些線條使其作品

UInt16 vid = 0x2341; 
     UInt16 pid = 0x0001; 

     string aqs = SerialDevice.GetDeviceSelectorFromUsbVidPid(vid, pid); 

     var myDevices = await DeviceInformation.FindAllAsync(aqs); 

     if (myDevices.Count == 0) 
     { 
      Debug.WriteLine("Device not found!"); 
      return; 
     } 

但我發現了一個新問題... This serialDevice = await SerialDevice.FromIdAsync(myDevices[0].Id); returns null

Capabi lities是正確的(當我把它比作微軟的樣品)

<Capabilities> 
<Capability Name="internetClient" /> 
<DeviceCapability Name="serialcommunication"> 
    <Device Id="any"> 
    <Function Type="name:serialPort"/> 
    </Device> 
</DeviceCapability> 

+0

你在得到線異常'serialDevice =等待SerialDevice.FromIdAsync(myDevices [0] .ID);'?看起來你正在得到一個空的設備陣列。 –

+0

是的,我剛剛發現... 我不得不將UInt32更改爲UInt16,雖然它是微軟示例中的UInt32 ... https://docs.microsoft.com/en-us/uwp/api/windows.devices .serialcommunication.serialdevice#Windows_Devices_SerialCommunication_SerialDevice_FromIdAsync_System_String_ – Principis

+0

問題已修復,但我發現了一個新問題...此行爲: serialDevice = await SerialDevice.FromIdAsync(myDevices [0] .Id); 返回始終爲空我多次檢查了Package.appxmanifest,它與serialUART示例的工作方式相同。 – Principis

回答

0

我改變了對USHORT其中UINT16解決System.ArgumentOutOfRangeException錯誤。

serialDevice = await SerialDevice.FromIdAsync(myDevices[0].Id); 

該解決方案返回null

正在改變可變serialDevice的SerialPort一些惱人的原因...

編輯:一次得手,它再次被打破....任何想法?

編輯2:有人給了我solution

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