I have input COM ports. I receive data from these like binary. Problem is i can't convert binary to object.

I try this.

    private void dataRecieved(object sender, SerialDataReceivedEventArgs e)
    {
        var dataLength = _serialPort.BytesToRead;
        var data = new byte[dataLength];
        int nbrData = _serialPort.Read(data, 0, dataLength);
        var Data = _serialPort.Encoding.GetString(data);
    }
    public object ByteArrayToObject(byte[] arrBytes)
    {
        BinaryFormatter bf = new BinaryFormatter();
        using (MemoryStream ms = new MemoryStream(arrBytes))
        {
            object obj = bf.Deserialize(ms);
            return obj;
        }
    }

It throw exception this line object obj = bf.Deserialize(ms);

System.Runtime.Serialization.SerializationException: The input stream is not a valid binary format. The starting contents (in bytes) are: 02-02-CC-CC-33-33-53-40-33-33-83-40-66-66-A6-40-9A

How can solve this? Answers will be evaluated.

EDIT

I have Ardunio System. Ardunio send data like binary format on SerialPort. This data actually is object. Object like this.

typedef struct MainCompPacket {
    uint8_t status;
    uint8_t sensorStatus;
    float pressure;  // mb
    float accX;      // g
    float accY;      // g
    float accZ;      // g
    float gyroX;     // deg/s
    float gyroY;     // deg/s
    float gyroZ;     // deg/s
    double latitude;
    double longitude;
} MainCompPacket; 

I should get data in WPF app. I can't because this data is binary format. I can't intervention Ardunio system. If i can, i change with sending json format.

CodePudding user response：

As @padeso said. Binary format need scheme for converting to object.

Firstly i create struct c# side. same data scheme in binary. Second i create static method for converting process. Finally i used Marshal and converting binary to objects

public struct MainCompPacket 
{
    byte status;
    byte sensorStatus;
    float pressure;  // mb
    float accX;      // g
    float accY;      // g
    float accZ;      // g
    float gyroX;     // deg/s
    float gyroY;     // deg/s
    float gyroZ;     // deg/s
    double latitude;
    double longitude;

    public static MainCompPacket FromBytes(byte[] bytes)
    {
        GCHandle gcHandle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
        var data = (MainCompPacket)Marshal.PtrToStructure(gcHandle.AddrOfPinnedObject(), typeof(Data));
        gcHandle.Free();
        return data;
    }
}