Remarks

FourDigitSevenSegment
Status
Source code	GitHub
NuGet package

Code Example

The following example shows how to initialize a SevenSegment display and iterates through all possible characters:

public class MeadowApp : App<F7Micro, MeadowApp>
{
    FourDigitSevenSegment sevenSegment;

    public MeadowApp()
    {
        sevenSegment = new FourDigitSevenSegment
        (
            portDigit1: Device.CreateDigitalOutputPort(Device.Pins.D00),
            portDigit2: Device.CreateDigitalOutputPort(Device.Pins.D03),
            portDigit3: Device.CreateDigitalOutputPort(Device.Pins.D04),
            portDigit4: Device.CreateDigitalOutputPort(Device.Pins.D06),
            portA: Device.CreateDigitalOutputPort(Device.Pins.D01),
            portB: Device.CreateDigitalOutputPort(Device.Pins.D05),
            portC: Device.CreateDigitalOutputPort(Device.Pins.D08),
            portD: Device.CreateDigitalOutputPort(Device.Pins.D10),
            portE: Device.CreateDigitalOutputPort(Device.Pins.D11),
            portF: Device.CreateDigitalOutputPort(Device.Pins.D02),
            portG: Device.CreateDigitalOutputPort(Device.Pins.D07),
            portDecimal: Device.CreateDigitalOutputPort(Device.Pins.D09),
            isCommonCathode: true
        );

        int number = 0;
        while (true)
        {
            string stringNumber = number.ToString("D4");
            sevenSegment.SetDisplay(stringNumber.ToCharArray());
            Thread.Sleep(1000);
            number++;
        }
    }
}

Sample projects available on GitHub

Wiring Example

To wire a Common Cathode Seven Segment Display (like the 5161AS) to your Meadow board, connect the following:

SevenSegment	Meadow Pin
portE	D11
portD	D10
PortDecimal	D09
PortC	D08
PortG	D07
PortD4	D06
PortB	D05
PortD3	D04
PortD2	D03
PortF	D02
PortA	D01
PortD1	D00

It should look like the following diagram:

Characteristic	Locus
Inheritance	System.Object > FourDigitSevenSegment
Inherited Members	System.Object.ToString() System.Object.Equals(System.Object) System.Object.Equals(System.Object, System.Object) System.Object.ReferenceEquals(System.Object, System.Object) System.Object.GetHashCode() System.Object.GetType() System.Object.MemberwiseClone()
Namespace	Meadow.Foundation.Displays.Led
Assembly	FourDigitSevenSegment.dll

Syntax

public class FourDigitSevenSegment

Constructors

FourDigitSevenSegment(IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, Boolean)

Creates a SevenSegment connected to the especified IDigitalOutputPorts

Declaration

public FourDigitSevenSegment(IDigitalOutputPort portDigit1, IDigitalOutputPort portDigit2, IDigitalOutputPort portDigit3, IDigitalOutputPort portDigit4, IDigitalOutputPort portA, IDigitalOutputPort portB, IDigitalOutputPort portC, IDigitalOutputPort portD, IDigitalOutputPort portE, IDigitalOutputPort portF, IDigitalOutputPort portG, IDigitalOutputPort portDecimal, bool isCommonCathode)

Parameters

Type	Name	Description
IDigitalOutputPort	portDigit1
IDigitalOutputPort	portDigit2
IDigitalOutputPort	portDigit3
IDigitalOutputPort	portDigit4
IDigitalOutputPort	portA
IDigitalOutputPort	portB
IDigitalOutputPort	portC
IDigitalOutputPort	portD
IDigitalOutputPort	portE
IDigitalOutputPort	portF
IDigitalOutputPort	portG
IDigitalOutputPort	portDecimal
System.Boolean	isCommonCathode

FourDigitSevenSegment(IIODevice, IPin, IPin, IPin, IPin, IPin, IPin, IPin, IPin, IPin, IPin, IPin, IPin, Boolean)

Creates a SevenSegment connected to the especified IPins to a IODevice

Declaration

public FourDigitSevenSegment(IIODevice device, IPin pinDigit1, IPin pinDigit2, IPin pinDigit3, IPin pinDigit4, IPin pinA, IPin pinB, IPin pinC, IPin pinD, IPin pinE, IPin pinF, IPin pinG, IPin pinDecimal, bool isCommonCathode)

Parameters

Type	Name	Description
IIODevice	device
IPin	pinDigit1
IPin	pinDigit2
IPin	pinDigit3
IPin	pinDigit4
IPin	pinA
IPin	pinB
IPin	pinC
IPin	pinD
IPin	pinE
IPin	pinF
IPin	pinG
IPin	pinDecimal
System.Boolean	isCommonCathode

Fields

animationThread

Declaration

protected Task animationThread

Field Value

Type	Description
System.Threading.Tasks.Task

cts

Declaration

protected CancellationTokenSource cts

Field Value

Type	Description
System.Threading.CancellationTokenSource

digits

Declaration

protected readonly IDigitalOutputPort[] digits

Field Value

Type	Description
IDigitalOutputPort[]

sevenSegments

Declaration

protected SevenSegment[] sevenSegments

Field Value

Type	Description
SevenSegment[]

Methods

SetDisplay(Char[], Int32)

Displays the especified valid character

Declaration

public void SetDisplay(char[] character, int decimalLocation = -1)

Parameters

Type	Name	Description
System.Char[]	character
System.Int32	decimalLocation

StartDisplayLoop(Char[], Int32, CancellationToken)

Declaration

protected Task StartDisplayLoop(char[] character, int decimalLocation, CancellationToken cancellationToken)

Parameters

Type	Name	Description
System.Char[]	character
System.Int32	decimalLocation
System.Threading.CancellationToken	cancellationToken

Returns

Type	Description
System.Threading.Tasks.Task

Stop()

Declaration

public void Stop()