Remarks

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

Code Example

public MeadowApp()
{
    Console.WriteLine("Initialize hardware...");
    var i2CBus = Device.CreateI2cBus(I2cBusSpeed.FastPlus);

    var pca9685 = new Pca9685(i2CBus, (byte)Pca9685.Addresses.Default, 50);
    pca9685.Initialize();

      var port0 = pca9685.CreatePwmPort(0, 0.05f);
    var port7 = pca9685.CreatePwmPort(7);

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

Sample project(s) available on GitHub

Wiring Example

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

Characteristic	Locus
Inheritance	System.Object > Pca9685
Namespace	Meadow.Foundation.ICs.IOExpanders
Assembly	Pca9685.dll

Syntax

public class Pca9685 : object

Constructors

Pca9685(II2cBus, Byte, Int32)

Declaration

public Pca9685(II2cBus i2cBus, byte address = null, int frequency = 100)

Parameters

Type	Name	Description
II2cBus	i2cBus
System.Byte	address
System.Int32	frequency

Fields

allCall

Declaration

protected const byte allCall = null

Field Value

Type	Description
System.Byte

AllLedOffH

Declaration

protected const byte AllLedOffH = null

Field Value

Type	Description
System.Byte

AllLedOffL

Declaration

protected const byte AllLedOffL = null

Field Value

Type	Description
System.Byte

AllLedOnH

Declaration

protected const byte AllLedOnH = null

Field Value

Type	Description
System.Byte

AllLedOnL

Declaration

protected const byte AllLedOnL = null

Field Value

Type	Description
System.Byte

invert

Declaration

protected const byte invert = null

Field Value

Type	Description
System.Byte

Led0OffH

Declaration

protected const byte Led0OffH = null

Field Value

Type	Description
System.Byte

Led0OffL

Declaration

protected const byte Led0OffL = null

Field Value

Type	Description
System.Byte

Led0OnH

Declaration

protected const byte Led0OnH = null

Field Value

Type	Description
System.Byte

Led0OnL

Declaration

protected const byte Led0OnL = null

Field Value

Type	Description
System.Byte

Mode1

Declaration

protected const byte Mode1 = null

Field Value

Type	Description
System.Byte

mode1AI

Declaration

protected const byte mode1AI = null

Field Value

Type	Description
System.Byte

Mode2

Declaration

protected const byte Mode2 = null

Field Value

Type	Description
System.Byte

outDrv

Declaration

protected const byte outDrv = null

Field Value

Type	Description
System.Byte

PreScale

Declaration

protected const byte PreScale = null

Field Value

Type	Description
System.Byte

restart

Declaration

protected const byte restart = null

Field Value

Type	Description
System.Byte

sleep

Declaration

protected const byte sleep = null

Field Value

Type	Description
System.Byte

SubAdr1

Declaration

protected const byte SubAdr1 = null

Field Value

Type	Description
System.Byte

SubAdr2

Declaration

protected const byte SubAdr2 = null

Field Value

Type	Description
System.Byte

SubAdr3

Declaration

protected const byte SubAdr3 = null

Field Value

Type	Description
System.Byte

Properties

i2CBus

The I2C bus connected to the pca9685

Declaration

public II2cBus i2CBus { get; protected set; }

Property Value

Type	Description
II2cBus

Methods

CreatePwmPort(Byte, Single)

Create a IPwmPort on the specified pin

Declaration

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

Parameters

Type	Name	Description
System.Byte	portNumber	The port number (0-15)
System.Single	dutyCycle	The duty cycle for that port

Returns

Type	Description
IPwmPort	IPwmPort

Initialize()

Initializes the PCA9685 IC

Declaration

public virtual void Initialize()

SetFrequency(Int32)

Declaration

protected virtual void SetFrequency(int frequency)

Parameters

Type	Name	Description
System.Int32	frequency

SetPin(Byte, Boolean)

Turns the specified pin On or Off

Declaration

public virtual void SetPin(byte pin, bool on)

Parameters

Type	Name	Description
System.Byte	pin	The pin to set
System.Boolean	on	true is on, false if off

SetPwm(Byte, Int32, Int32)

Declaration

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

Parameters

Type	Name	Description
System.Byte	pin
System.Int32	on
System.Int32	off

Write(Byte, Byte)

Declaration

protected virtual void Write(byte register, byte value)

Parameters

Type	Name	Description
System.Byte	register
System.Byte	value

Write(Byte, Byte, Byte, Byte, Byte)

Declaration

protected virtual void Write(byte register, byte ledXOnL, byte ledXOnH, byte ledXOffL, byte ledXOffH)

Parameters

Type	Name	Description
System.Byte	register
System.Byte	ledXOnL
System.Byte	ledXOnH
System.Byte	ledXOffL
System.Byte	ledXOffH