Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub

Characteristic Locus
Inheritance object > IDxxLA
Implements IRfidReader IObservable<byte[]> IDisposable
Inherited Members object.Equals(object) object.Equals(object, object) object.GetHashCode() object.GetType() object.MemberwiseClone() object.ReferenceEquals(object, object) object.ToString()
Namespace Meadow.Foundation.Sensors.Radio.Rfid
Assembly IDxxLA.dll

Syntax

public class IDxxLA : IRfidReader, IObservable<byte[]>, IDisposable

Constructors

IDxxLA(ISerialMessageController, SerialPortName)

Create an IDxxLA RFID reader

Declaration
public IDxxLA(ISerialMessageController device, SerialPortName serialPortName)

Parameters

Type Name Description
ISerialMessageController device

Device to use
SerialPortName serialPortName

Port name to use

Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub

IDxxLA(ISerialMessagePort)

Create an IDxxLA RFID reader using an existing port.

Declaration
public IDxxLA(ISerialMessagePort serialPort)

Parameters

Type Name Description
ISerialMessagePort serialPort

Remarks

Be sure to use suitable settings when creating the serial port. Default BaudRate and DataBits are exposed as constants.

Fields

BaudRate

The baud rate (9600)

Declaration
public const int BaudRate = 9600

Field Value

Type Description
int

Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub

DataBits

Data bits (7)

Declaration
public const int DataBits = 7

Field Value

Type Description
int

Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub

Properties

LastRead

A cached copy of the last successfully read RFID tag.

Declaration
public byte[] LastRead { get; }

Property Value

Type Description
byte[]

The last read RFID tag.

Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub

Methods

Dispose()

Dispose of this instance.

Declaration
public void Dispose()

Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub

StartReading()

Start reading for RFID tags.

Declaration
public void StartReading()

Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub

StopReading()

Stop reading for RFID tags.

Declaration
public void StopReading()

Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub

Subscribe(IObserver<byte[]>)

Subscribe to RFID tag reads. Observer will only receive valid reads, with invalid reads triggering an OnError call. OnComplete will be called if this instance is disposed. This call is thread-safe.

Declaration
public IDisposable Subscribe(IObserver<byte[]> observer)

Parameters

Type Name Description
IObserver<byte[]> observer

The observer to subscribe

Returns

Type Description
IDisposable

Disposable unsubscriber

Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub

Events

RfidRead

Event fired when an RFID tag is read. Check the read status to see if the read was successful.

Declaration
public event RfidReadEventHandler RfidRead

Event Type

Type Description
RfidReadEventHandler

Remarks

IDxxLA
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.Sensors.Radio.Rfid.IDxxLA

Code Example

IRfidReader rfidReader;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    rfidReader = new IDxxLA(Device, Device.PlatformOS.GetSerialPortName("COM1"));

    // subscribe to event
    rfidReader.RfidRead += RfidReaderOnTagRead;

    // subscribe to IObservable
    rfidReader.Subscribe(new RfidObserver());

    return Task.CompletedTask;
}

public override Task Run()
{ 
    rfidReader.StartReading();

    return Task.CompletedTask;
}

private void RfidReaderOnTagRead(object sender, RfidReadResult e)
{
    if (e.Status == RfidValidationStatus.Ok) {
        Resolver.Log.Info($"From event - Tag value is {DebugInformation.Hexadecimal(e.RfidTag)}");
        return;
    }

    Resolver.Log.Error($"From event - Error {e.Status}");
}

private class RfidObserver : IObserver<byte[]>
{
    public void OnCompleted()
    {
        Resolver.Log.Info("From IObserver - RfidReader has terminated, no more events will be emitted.");
    }
     
    public void OnError(Exception error)
    {
        Resolver.Log.Error($"From IObserver - {error}");
    }

    public void OnNext(byte[] value)
    {
        Resolver.Log.Info($"From IObserver - Tag value is {DebugInformation.Hexadecimal(value)}");
    }
}

Sample project(s) available on GitHub