如何在C＃中读取通过USB端口传输的数据？ [英] How can I read data coming via USB port in C# ?

问题描述

我想从通过USB端口连接的数字秤获得重量。



我尝试过：



我只获得了连接设备信息。

静态列表< usbdeviceinfo> GetUSBDevices（）
 {
 List< usbdeviceinfo> devices = new List< usbdeviceinfo>（）; 
 
 var searcher = new ManagementObjectSearcher（@SELECT * FROM Win32_PnPEntity，其中DeviceID LikeUSB％）; 
 
 
 foreach（searcher.Get（）中的var设备）
 {
 
 devices.Add（新USBDeviceInfo（
 $ b $） b（字符串）device.GetPropertyValue（DeviceID），
（字符串）device.GetPropertyValue（PNPDeviceID），
（字符串）device.GetPropertyValue（Description），
（ string）device.GetPropertyValue（Name）
 
））; 
} 
 
返回设备; 
} 

 public USBDeviceInfo（string deviceID，string pnpDeviceID，string description，string name）
 {
 this.DeviceID = deviceID; 
 this.PnpDeviceID = pnpDeviceID; 
 this.Description = description; 
 this.Name = name; 
} 
公共字符串DeviceID {get;私人集; } 
 public string PnpDeviceID {get;私人集; } 
 public string说明{get;私人集; } 
 public string Name {get;私人集; } 

解决方案

当您通过USB连接到秤时，您需要使用SerialPort并从秤中读取数据为ASCII / Unicode数据和处理它 - USB端口的属性将告诉你没有用。



从规模制造商文档/网站开始他们经常有可能有用的示例代码你

I want to get weight from digital scale connected via USB port.

What I have tried:

I only got connected device information.

static List<usbdeviceinfo> GetUSBDevices()
    {
        List<usbdeviceinfo> devices = new List<usbdeviceinfo>();

        var searcher = new ManagementObjectSearcher(@"SELECT * FROM Win32_PnPEntity where DeviceID Like ""USB%""");


        foreach (var device in searcher.Get())
        {
            
            devices.Add(new USBDeviceInfo(
           
            (string)device.GetPropertyValue("DeviceID"),
            (string)device.GetPropertyValue("PNPDeviceID"),
            (string)device.GetPropertyValue("Description"),
            (string)device.GetPropertyValue("Name")
            
            ));
        }

        return devices;
    }

public USBDeviceInfo(string deviceID, string pnpDeviceID, string description, string name)
    {
        this.DeviceID = deviceID;
        this.PnpDeviceID = pnpDeviceID;
        this.Description = description;
        this.Name = name;
    }
    public string DeviceID { get; private set; }
    public string PnpDeviceID { get; private set; }
    public string Description { get; private set; }
    public string Name { get; private set; }

解决方案

When you connect to a scale via USB you need to use a SerialPort and read the data from the scale as ASCII / Unicode data and process it yourself - the properties of the USB port will tell you nothing useful.

Start with the scale manufacturers documentation / website they often have sample code that may help you.

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