Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

Characteristic Locus
Inheritance object I2cCommunications > Pca9671
Implements II2cCommunications IByteCommunications IDigitalOutputController IDigitalInputController IPinController II2cPeripheral IDisposable
Inherited Members I2cCommunications.Address I2cCommunications.Bus I2cCommunications.WriteBuffer I2cCommunications.ReadBuffer I2cCommunications.Read(Span<byte>) I2cCommunications.ReadRegister(byte, Span<byte>) I2cCommunications.ReadRegister(byte) I2cCommunications.ReadRegisterAsUShort(byte, ByteOrder) I2cCommunications.Write(byte) I2cCommunications.Write(Span<byte>) I2cCommunications.WriteRegister(byte, byte) I2cCommunications.WriteRegister(byte, ushort, ByteOrder) I2cCommunications.WriteRegister(byte, uint, ByteOrder) I2cCommunications.WriteRegister(byte, ulong, ByteOrder) I2cCommunications.WriteRegister(byte, Span<byte>, ByteOrder) I2cCommunications.Exchange(Span<byte>, Span<byte>, DuplexType) object.Equals(object) object.Equals(object, object) object.GetHashCode() object.GetType() object.MemberwiseClone() object.ReferenceEquals(object, object) object.ToString()
Namespace Meadow.Foundation.ICs.IOExpanders
Assembly Pca9671.dll

Syntax

public class Pca9671 : I2cCommunications, II2cCommunications, IByteCommunications, IDigitalOutputController, IDigitalInputController, IPinController, II2cPeripheral, IDisposable

Constructors

Pca9671(II2cBus, byte, IDigitalOutputPort?)

Creates a new Pca9671 instance

Declaration
public Pca9671(II2cBus i2cBus, byte peripheralAddress, IDigitalOutputPort? resetPort = null)

Parameters

Type Name Description
II2cBus i2cBus

The I2C buss the peripheral is connected to

byte peripheralAddress

The i2cBus address of the peripheral

IDigitalOutputPort resetPort

The optional pin connected to the peripheral's reset

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

Pca9671(II2cBus, byte, IPin?)

Creates a new Pca9671 instance

Declaration
public Pca9671(II2cBus i2cBus, byte peripheralAddress, IPin? resetPin = null)

Parameters

Type Name Description
II2cBus i2cBus

The I2C buss the peripheral is connected to

byte peripheralAddress

The i2cBus address of the peripheral

IPin resetPin

The optional pin connected to the peripheral's reset

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

Properties

DefaultI2cAddress

The default I2C address for the peripheral

Declaration
public byte DefaultI2cAddress { get; }

Property Value

Type Description
byte

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

IsDisposed

Is the object disposed

Declaration
public bool IsDisposed { get; }

Property Value

Type Description
bool

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

Pins

Represents a PCA9671 I2C IO Expander

Declaration
public Pca9671.PinDefinitions Pins { get; }

Property Value

Type Description
Pca9671.PinDefinitions

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

Methods

AllOff()

Convenience method to turn all outputs off

Declaration
public void AllOff()

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

AllOn()

Convenience method to turn all outputs on

Declaration
public void AllOn()

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

CreateDigitalInputPort(IPin, ResistorMode)

Creates an IDigitalInputPort on the specified pin.

Declaration
public IDigitalInputPort CreateDigitalInputPort(IPin pin, ResistorMode resistorMode)

Parameters

Type Name Description
IPin pin

The pin on which to create the port.

ResistorMode resistorMode

The ResistorMode specifying whether an external pull-up/pull-down resistor is used, or an internal pull-up/pull-down resistor should be configured for default state.

Returns

Type Description
IDigitalInputPort

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

CreateDigitalOutputPort(IPin, bool, OutputType)

Creates an IDigitalOutputPort on the specified pin.

Declaration
public IDigitalOutputPort CreateDigitalOutputPort(IPin pin, bool initialState = false, OutputType initialOutputType = OutputType.PushPull)

Parameters

Type Name Description
IPin pin

The pin on which to create the port.

bool initialState

The default initial state of the port, either LOW (false), or HIGH (true).

OutputType initialOutputType

Whether the port is initially configured as PushPull or OpenDrain. PushPull by default.

Returns

Type Description
IDigitalOutputPort

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

Dispose()

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

Declaration
public void Dispose()

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

Dispose(bool)

Dispose of the object

Declaration
protected virtual void Dispose(bool disposing)

Parameters

Type Name Description
bool disposing

Is disposing

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

GetPin(string)

Represents a PCA9671 I2C IO Expander

Declaration
public IPin GetPin(string pinName)

Parameters

Type Name Description
string pinName

Returns

Type Description
IPin

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

GetState(IPin)

Retrieves the state of a pin

Declaration
public bool GetState(IPin pin)

Parameters

Type Name Description
IPin pin

The pin to query

Returns

Type Description
bool

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

IsValidPin(IPin)

Represents a PCA9671 I2C IO Expander

Declaration
protected bool IsValidPin(IPin pin)

Parameters

Type Name Description
IPin pin

Returns

Type Description
bool

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

ReadState()

Reads the peripheral state register

Declaration
protected ushort ReadState()

Returns

Type Description
ushort

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

Reset()

Resets the peripheral

Declaration
public void Reset()

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

SetState(IPin, bool)

Sets the state of a pin

Declaration
public void SetState(IPin pin, bool state)

Parameters

Type Name Description
IPin pin

The pin to affect

bool state

True to set the pin state high, False to set it low

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub

WriteState(ushort)

Writes the peripheral state register

Declaration
protected void WriteState(ushort state)

Parameters

Type Name Description
ushort state

Remarks

Pca9671
Status Status badge: working
Source code GitHub
Datasheet(s) GitHub
NuGet package NuGet Gallery for Meadow.Foundation.ICs.IOExpanders.Pca9671

Code Example

private Pca9671 pca;

public override Task Initialize()
{
    pca = new Pca9671(Device.CreateI2cBus(), 0x20, Device.Pins.D01);

    return base.Initialize();
}

public override Task Run()
{
    while (true)
    {
        //TestBulkDigitalOutputPortWrites(20);
        TestDigitalOutputPorts(2);
    }
}

private void TestDigitalOutputPorts(int loopCount)
{
    var out00 = pca.CreateDigitalOutputPort(pca.Pins.R00);
    var out01 = pca.CreateDigitalOutputPort(pca.Pins.R01);
    var out02 = pca.CreateDigitalOutputPort(pca.Pins.R02);
    var out03 = pca.CreateDigitalOutputPort(pca.Pins.R03);
    var out04 = pca.CreateDigitalOutputPort(pca.Pins.R04);
    var out05 = pca.CreateDigitalOutputPort(pca.Pins.R05);
    var out06 = pca.CreateDigitalOutputPort(pca.Pins.R06);
    var out07 = pca.CreateDigitalOutputPort(pca.Pins.R07);
    var out08 = pca.CreateDigitalOutputPort(pca.Pins.R08);
    var out09 = pca.CreateDigitalOutputPort(pca.Pins.R09);
    var out10 = pca.CreateDigitalOutputPort(pca.Pins.R10);
    var out11 = pca.CreateDigitalOutputPort(pca.Pins.R11);
    var out12 = pca.CreateDigitalOutputPort(pca.Pins.R12);
    var out13 = pca.CreateDigitalOutputPort(pca.Pins.R13);
    var out14 = pca.CreateDigitalOutputPort(pca.Pins.R14);
    var out15 = pca.CreateDigitalOutputPort(pca.Pins.R15);


    var outputPorts = new List<IDigitalOutputPort>()
    {
        out00, out01, out02, out03, out04, out05, out06, out07,
        out08, out09, out10, out11, out12, out13, out14, out15
    };

    foreach (var outputPort in outputPorts)
    {
        outputPort.State = true;
    }

    for (int l = 0; l < loopCount; l++)
    {
        // loop through all the outputs
        for (int i = 0; i < outputPorts.Count; i++)
        {
            // turn them all off
            pca.AllOff();

            // turn on just one
            outputPorts[i].State = true;
            Thread.Sleep(250);
        }
    }

    // cleanup
    for (int i = 0; i < outputPorts.Count; i++)
    {
        outputPorts[i].Dispose();
    }
}

Sample project(s) available on GitHub