Remarks

Pca9685
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Pca9685 pca9685;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    pca9685 = new Pca9685(i2CBus, new Meadow.Units.Frequency(50, Meadow.Units.Frequency.UnitType.Hertz), (byte)Pca9685.Addresses.Default);
    pca9685.Initialize();

    return base.Initialize();
}

public override Task Run()
{
    var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

    port0.Start();
    port7.Start();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a PCA9685 to your Meadow board, connect the following:

Characteristic	Locus
Inheritance	object > Pca9685
Implements	II2cPeripheral
Inherited Members	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	Pca9685.dll

Syntax

public class Pca9685 : II2cPeripheral

Constructors

Pca9685(II2cBus, Frequency, byte)

Create a new Pca9685 object

Declaration

public Pca9685(II2cBus i2cBus, Frequency frequency, byte address = 64)

Parameters

Type	Name	Description
II2cBus	i2cBus	The I2C bus connected to the peripheral
Frequency	frequency	The frequency
byte	address	The I2C address

Remarks

Pca9685
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Pca9685 pca9685;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    pca9685 = new Pca9685(i2CBus, new Meadow.Units.Frequency(50, Meadow.Units.Frequency.UnitType.Hertz), (byte)Pca9685.Addresses.Default);
    pca9685.Initialize();

    return base.Initialize();
}

public override Task Run()
{
    var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

    port0.Start();
    port7.Start();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a PCA9685 to your Meadow board, connect the following:

Pca9685(II2cBus, byte)

Create a new Pca9685 object

Declaration

public Pca9685(II2cBus i2cBus, byte address = 64)

Parameters

Type	Name	Description
II2cBus	i2cBus	The I2C bus connected to the peripheral
byte	address	The I2C address

Remarks

Pca9685
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Pca9685 pca9685;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    pca9685 = new Pca9685(i2CBus, new Meadow.Units.Frequency(50, Meadow.Units.Frequency.UnitType.Hertz), (byte)Pca9685.Addresses.Default);
    pca9685.Initialize();

    return base.Initialize();
}

public override Task Run()
{
    var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

    port0.Start();
    port7.Start();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a PCA9685 to your Meadow board, connect the following:

Fields

i2cComms

I2C Communication bus used to communicate with the peripheral

Declaration

protected readonly II2cCommunications i2cComms

Field Value

Type	Description
II2cCommunications

Remarks

Pca9685
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Pca9685 pca9685;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    pca9685 = new Pca9685(i2CBus, new Meadow.Units.Frequency(50, Meadow.Units.Frequency.UnitType.Hertz), (byte)Pca9685.Addresses.Default);
    pca9685.Initialize();

    return base.Initialize();
}

public override Task Run()
{
    var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

    port0.Start();
    port7.Start();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a PCA9685 to your Meadow board, connect the following:

Properties

DefaultI2cAddress

The default I2C address for the peripheral

Declaration

public byte DefaultI2cAddress { get; }

Property Value

Type	Description
byte

Remarks

Pca9685
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Pca9685 pca9685;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    pca9685 = new Pca9685(i2CBus, new Meadow.Units.Frequency(50, Meadow.Units.Frequency.UnitType.Hertz), (byte)Pca9685.Addresses.Default);
    pca9685.Initialize();

    return base.Initialize();
}

public override Task Run()
{
    var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

    port0.Start();
    port7.Start();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a PCA9685 to your Meadow board, connect the following:

i2CBus

The I2C bus connected to the pca9685

Declaration

protected II2cBus i2CBus { get; set; }

Property Value

Type	Description
II2cBus

Remarks

Pca9685
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Pca9685 pca9685;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    pca9685 = new Pca9685(i2CBus, new Meadow.Units.Frequency(50, Meadow.Units.Frequency.UnitType.Hertz), (byte)Pca9685.Addresses.Default);
    pca9685.Initialize();

    return base.Initialize();
}

public override Task Run()
{
    var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

    port0.Start();
    port7.Start();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a PCA9685 to your Meadow board, connect the following:

Methods

CreatePwmPort(byte, float)

Create a IPwmPort on the specified pin

Declaration

public virtual IPwmPort CreatePwmPort(byte portNumber, float dutyCycle = 0.5)

Parameters

Type	Name	Description
byte	portNumber	The port number (0-15)
float	dutyCycle	The duty cycle for that port

Returns

Type	Description
IPwmPort	IPwmPort

Remarks

Pca9685
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Pca9685 pca9685;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    pca9685 = new Pca9685(i2CBus, new Meadow.Units.Frequency(50, Meadow.Units.Frequency.UnitType.Hertz), (byte)Pca9685.Addresses.Default);
    pca9685.Initialize();

    return base.Initialize();
}

public override Task Run()
{
    var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

    port0.Start();
    port7.Start();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a PCA9685 to your Meadow board, connect the following:

Initialize()

Initializes the PCA9685 IC

Declaration

public virtual void Initialize()

Remarks

Pca9685
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Pca9685 pca9685;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    pca9685 = new Pca9685(i2CBus, new Meadow.Units.Frequency(50, Meadow.Units.Frequency.UnitType.Hertz), (byte)Pca9685.Addresses.Default);
    pca9685.Initialize();

    return base.Initialize();
}

public override Task Run()
{
    var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

    port0.Start();
    port7.Start();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a PCA9685 to your Meadow board, connect the following:

SetPin(byte, bool)

Turns the specified pin On or Off

Declaration

public virtual void SetPin(byte pin, bool on)

Parameters

Type	Name	Description
byte	pin	The pin to set
bool	on	true is on, false if off

Remarks

Pca9685
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Pca9685 pca9685;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    pca9685 = new Pca9685(i2CBus, new Meadow.Units.Frequency(50, Meadow.Units.Frequency.UnitType.Hertz), (byte)Pca9685.Addresses.Default);
    pca9685.Initialize();

    return base.Initialize();
}

public override Task Run()
{
    var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

    port0.Start();
    port7.Start();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a PCA9685 to your Meadow board, connect the following:

SetPwm(byte, int, int)

Set the values for specified output pin.

Declaration

public virtual void SetPwm(byte pin, int on, int off)

Parameters

Type	Name	Description
byte	pin	The pwm Pin
int	on	LED{X}_ON_L and LED{X}_ON_H registier value
int	off	LED{X}_OFF_L and LED{X}_OFF_H registier value

Remarks

On parameter is an inverted pwm signal