Remarks

Vc0706
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Vc0706 camera;

//Uses SimpleJpegDecoder package for jpeg decoding
public MeadowApp()
{
    Console.WriteLine("Initialize hardware...");

    camera = new Vc0706(Device, Device.SerialPortNames.Com4, 38400);

    camera.SetImageSize(Vc0706.ImageSize._320x240);
    Console.WriteLine($"Image size is {camera.GetImageSize()}");

    camera.TakePicture();

    uint frameLen = camera.GetFrameLength();
    Console.WriteLine($"Frame length: {frameLen}");

    byte bytesToRead;
    byte[] jpg;

    var decoder = new JpegDecoder();

    using (var stream = new MemoryStream())
    {
        Console.WriteLine($"Decode jpeg - this operation may take serveral seconds");

        while (frameLen > 0)
        {
            bytesToRead = (byte)Math.Min(32, frameLen);

            var buffer = camera.ReadPicture(bytesToRead);

            stream.Write(buffer, 0, bytesToRead);
            frameLen -= bytesToRead;
        }
        jpg = decoder.DecodeJpeg(stream.ToArray());
    }

    Console.WriteLine($"Jpeg data length: {jpg.Length}");

    Console.WriteLine($"Jpeg decoded is {decoder.ImageSize} bytes");
    Console.WriteLine($"Width {decoder.Width}");
    Console.WriteLine($"Height {decoder.Height}");
    Console.WriteLine($"IsColor {decoder.IsColor}");
}

Sample project(s) available on GitHub

|

Code Example

Vc0706 camera;

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

    camera = new Vc0706(Device, Device.PlatformOS.GetSerialPortName("COM4"), 38400);

    return Task.CompletedTask;
}

public override Task Run()
{
    if (!camera.SetCaptureResolution(Vc0706.ImageResolution._160x120))
    {
        Resolver.Log.Info("Set resolution failed");
    }

    _ = TakePicture();

    return Task.CompletedTask;
}

async Task TakePicture()
{
    Resolver.Log.Info($"Image size is {camera.GetCaptureResolution()}");

    camera.CapturePhoto();

    using var jpegStream = await camera.GetPhotoStream();

    var jpeg = new JpegImage(jpegStream);
    Resolver.Log.Info($"Image decoded - width:{jpeg.Width}, height:{jpeg.Height}");
}

Sample project(s) available on GitHub

Characteristic	Locus
Inheritance	System.Object > Vc0706
Namespace	Meadow.Foundation.Sensors.Camera
Assembly	Vc0706.dll

Syntax

public class Vc0706 : ICamera

Constructors

Vc0706(ISerialController, SerialPortName, Int32)

Create a new VC0706 serial camera object

Declaration

public Vc0706(ISerialController device, SerialPortName portName, int baudRate)

Parameters

Type	Name	Description
ISerialController	device	The device conected to the sensor
SerialPortName	portName
System.Int32	baudRate

Properties

BytesAvailable

Number of bytes avaliable in the camera buffer

Declaration

public byte BytesAvailable { get; }

Property Value

Type	Description
System.Byte

SerialNumber

The camera serial number

Declaration

public byte SerialNumber { get; }

Property Value

Type	Description
System.Byte

Methods

CapturePhoto()

Capture a new image

Declaration

public bool CapturePhoto()

Returns

Type	Description
System.Boolean	true if successful

GetCaptureResolution()

Get the current image capture resolution

Declaration

public Vc0706.ImageResolution GetCaptureResolution()

Returns

Type	Description
Vc0706.ImageResolution	the image resolution as an ImageResolution enum

GetColorMode()

Get the current camera color mode (Color, Black and White, automatic)

Declaration

public Vc0706.ColorMode GetColorMode()

Returns

Type	Description
Vc0706.ColorMode

GetCompression()

Get compression (0-255)

Declaration

public byte GetCompression()

Returns

Type	Description
System.Byte	compression value

GetDownsize()

Get the downsize value

Declaration

public byte GetDownsize()

Returns

Type	Description
System.Byte

GetFrameLength()

Get the length of the current frame

Declaration

public uint GetFrameLength()

Returns

Type	Description
System.UInt32

GetMotionDetectMode()

Get the motion detection mode

Declaration

public bool GetMotionDetectMode()

Returns

Type	Description
System.Boolean	true if enabled, false if not enabled or command failed

GetMotionStatus(Byte)

Get the motion detection mode

Declaration

public bool GetMotionStatus(byte x)

Parameters

Type	Name	Description
System.Byte	x

Returns

Type	Description
System.Boolean

GetPanTiltZoom()

Get Pan, Tilt and Zoom values

Declaration

public (ushort width, ushort height, ushort horizonalZoom, ushort verticalZoom, ushort pan, ushort tilt) GetPanTiltZoom()

Returns

Type	Description
System.ValueTuple<System.UInt16, System.UInt16, System.UInt16, System.UInt16, System.UInt16, System.UInt16>

GetPhotoData()

Retreive the image data from the camera

Declaration

public Task<byte[]> GetPhotoData()

Returns

Type	Description
Task<System.Byte[]>	The image data as a jpeg in a byte array

GetPhotoStream()

Retreive the image data from the camera

Declaration

public Task<MemoryStream> GetPhotoStream()

Returns

Type	Description
Task<MemoryStream>	The image data as a jpeg in a MemoryStream

GetVersion()

Get the camera version

Declaration

public string GetVersion()

Returns

Type	Description
System.String	the version as a string

IsMotionDetected()

Check if camera has detected recent motion

Declaration

public bool IsMotionDetected()

Returns

Type	Description
System.Boolean

IsPhotoAvailable()

Check if there is picture data on the camera

Declaration

public bool IsPhotoAvailable()

Returns

Type	Description
System.Boolean	true is data is avaliable

ReadPicture(Byte)

Read bytes from the camera buffer

Declaration

public byte[] ReadPicture(byte length)

Parameters

Type	Name	Description
System.Byte	length

Returns

Type	Description
System.Byte[]

ResumeVideo()

Resume live video over composite

Declaration

public bool ResumeVideo()

Returns

Type	Description
System.Boolean

SetCaptureResolution(Vc0706.ImageResolution)

Set the image resolution

Declaration

public bool SetCaptureResolution(Vc0706.ImageResolution resolution)

Parameters

Type	Name	Description
Vc0706.ImageResolution	resolution	the new image capture resolution

Returns

Type	Description
System.Boolean	true if succesful

SetColorMode(Vc0706.ColorMode)

Set the camera color mode (Color, Black and White, automatic)

Declaration

public void SetColorMode(Vc0706.ColorMode colorControl)

Parameters

Type	Name	Description
Vc0706.ColorMode	colorControl

SetCompression(Byte)

Set compression (0-255)

Declaration

public bool SetCompression(byte compression)

Parameters

Type	Name	Description
System.Byte	compression

Returns

Type	Description
System.Boolean	true if succesful

SetDownsize(Byte)

Set downsize

Declaration

public bool SetDownsize(byte downsize)

Parameters

Type	Name	Description
System.Byte	downsize

Returns

Type	Description
System.Boolean

SetMotionDetect(Boolean)

Enable or disable motion detection

Declaration

public bool SetMotionDetect(bool enable)

Parameters

Type	Name	Description
System.Boolean	enable	true to enable

Returns

Type	Description
System.Boolean	true if succesful

SetMotionStatus(Byte, Byte, Byte)

Set the motion detection mode

Declaration

public bool SetMotionStatus(byte x, byte d1, byte d2)

Parameters

Type	Name	Description
System.Byte	x
System.Byte	d1
System.Byte	d2

Returns

Type	Description
System.Boolean

SetOnScreenDisplay(Byte, Byte, String)

Enable onscreen display for composite output (may not work)

Declaration

public void SetOnScreenDisplay(byte x, byte y, string message)

Parameters

Type	Name	Description
System.Byte	x	x location of display in pixels
System.Byte	y	y location of dispaly in pixels
System.String	message	text to display

SetPanTiltZoom(UInt16, UInt16, UInt16, UInt16)

Set Pan, tilt and zoom

Declaration

public bool SetPanTiltZoom(ushort horizontalZoom, ushort verticalZoom, ushort pan, ushort tilt)

Parameters

Type	Name	Description
System.UInt16	horizontalZoom
System.UInt16	verticalZoom
System.UInt16	pan
System.UInt16	tilt

Returns

Type	Description
System.Boolean

TvOff()

Disable TV output over composite

Declaration

public bool TvOff()

Returns

Type	Description
System.Boolean

TvOn()

Enable TV output over composite

Declaration

public bool TvOn()

Returns

Type	Description
System.Boolean