asciiman's Content

One main point to consider when using collections in a micro framework device is that of memory consumption. Each collection carries overhead � data that serves no other purpose than to facilitate the items you store in the collection. For example, inserting hundreds of items in an ArrayList will quickly use up most of the memory on a Netduino.

#61789 StreamReader vs FileStream

Posted by asciiman on 06 March 2015 - 09:39 AM in Netduino Plus 2 (and Netduino Plus 1)

hi guys

i read this "StreamReader is a memory pig. Use FileStream directly." is this true. FileStream is light version of StreamReader.

thnx

#61701 WebAPI and Socket

Posted by asciiman on 23 February 2015 - 07:41 PM in Netduino Plus 2 (and Netduino Plus 1)

hi

i fix it.

Content must be in " and "

for example

string xContent = "asdasdfaf" ; is wrong xContent = "\"asdasdfaf\""; is true.

https://www.youtube....h?v=5WtRF5PkBe8

#61684 WebAPI and Socket

Posted by asciiman on 21 February 2015 - 03:16 PM in Netduino Plus 2 (and Netduino Plus 1)

hi sir

I try it but dont working.

byte[] xContent = Convert.FromBase64String(Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes("this is content")));

I cant add .rar file

http://ul.to/ixhkmyn2

#61681 WebAPI and Socket

Posted by asciiman on 21 February 2015 - 10:18 AM in Netduino Plus 2 (and Netduino Plus 1)

hi guys

I can use "Get or Post" method with simple socket connection. I can send any parameters via url to "Get or Post" method. But i cant use [formBody] property.

What is wrong?

            var xSocket = new System.Net.Sockets.Socket(System.Net.Sockets.AddressFamily.InterNetwork, System.Net.Sockets.SocketType.Stream, System.Net.Sockets.ProtocolType.Tcp);
            var xEndPoint = new System.Net.IPEndPoint(System.Net.Dns.GetHostEntry("127.0.0.1").AddressList[0], 80);

            xSocket.Connect(xEndPoint);
            xSocket.SetSocketOption(System.Net.Sockets.SocketOptionLevel.Tcp, System.Net.Sockets.SocketOptionName.NoDelay, true);
            xSocket.SendTimeout = 1000;

            //byte[] xContent = System.Text.Encoding.UTF8.GetBytes("this is content");

            string xRequestLine = "Get /api/My/45 HTTP/1.1\r\n";

            string xHeaderLines =
                "Host: localhost" + "\r\n" +
                "Accept: text/json; charset=utf-8" + "\r\n" +
                "Accept-Encoding: gzip, deflate" + "\r\n" +
                //"Content-Type: application/json" + "\r\n" +
                //"Transfer-Encoding: chunked" + "\r\n" +
                "Connection: Close" + "\r\n" +
                //"Content-Length: " + xContent.Length.ToString() + "\r\n" +
                "\r\n";     // EmptyLine

            xSocket.Send(System.Text.Encoding.UTF8.GetBytes(xRequestLine));
            xSocket.Send(System.Text.Encoding.UTF8.GetBytes(xHeaderLines));
            //xSocket.Send(xContent);

#61533 LED/LCD TFT Screen

Posted by asciiman on 06 February 2015 - 08:51 AM in Netduino Plus 2 (and Netduino Plus 1)

hi sir

I write this code for using HelpersFont. I completed a few days ago.

    public class BitmapCharacter
    {
        public byte Width;          // Columns
        public byte Height;         // Rows
        public ushort[] Pixels;     // Includes color data
    }

    public class FontBase
    {

        public static BitmapCharacter getBitmapCharacter(char pChar, ushort pColor, ushort pTransparentColor, byte pFontHeight, ref ushort[] pFontMap, ref byte[] pFontBitmap)
        {
            byte xFontMapIndex = (byte)(pChar - 32);
            ushort xFontBitmapIndex = pFontMap[xFontMapIndex * 2 + 1];

            byte xCharWidthPixel = (byte)(pFontMap[xFontMapIndex * 2]);  // Bit or Pixel
            byte xColumnByteCount = (byte)(xCharWidthPixel / 8 + (xCharWidthPixel % 8 == 0 ? 0 : 1));

            var xPixelArray = new System.Collections.ArrayList();
            for (byte yIndex = 0; yIndex < pFontHeight; yIndex++)
            {
                UInt64 tmpInt64 = 0;    // RowCount = FontHeight, ColumnCount = CharWidthPixel (64 Max)
                for (byte xIndex = 0; xIndex < xColumnByteCount; xIndex++)
                    tmpInt64 = tmpInt64 << 8 | pFontBitmap[xFontBitmapIndex + yIndex * xColumnByteCount + xIndex];

                for (int xColumnIndex = 0; xColumnIndex < xCharWidthPixel; xColumnIndex++)
                {
                    byte xShiftCount = (byte)(xColumnByteCount * 8 - xColumnIndex - 1);

                    if (((tmpInt64 >> xShiftCount) & 1) == 1)
                        xPixelArray.Add(pColor);
                    else
                        xPixelArray.Add(pTransparentColor);
                }
            }

            var xBitmapCharacter = new BitmapCharacter()
                {
                    Width = xCharWidthPixel,
                    Height = pFontHeight,
                    Pixels = (ushort[])xPixelArray.ToArray(typeof(ushort))
                };

            return xBitmapCharacter;
        }

    }

I am using helpers font because i cant use any other font. For example created by TinyFontToolGUI.exe

pls look at this

https://learn.adafru...itmap-plus-text

Every think is lastes..!

Netduino is Netduino +2

Firmware is v4.3.1.0

Netduino SDK is v4.3.1.0

Framework is v4.3.1.0(QFE2)

Visual Studio is v2013 ...!

but i cant use it.

I have two problem with helpersfont

1) I cant find larger font than Verdana14 ( or any font like helpersfont)

2) I cant write transparent font for example over any image.

I will upload video today for problems..!

My english is not good sorry..!

#61506 How to not short circuit my Netduino ?

Posted by asciiman on 04 February 2015 - 08:27 AM in Netduino Plus 2 (and Netduino Plus 1)

hi Chris

Can i plug 2Amper or more to 7.5~9volt VIN power?

Or what is the limit of Amper ?

#61334 LED/LCD TFT Screen

Posted by asciiman on 21 January 2015 - 07:59 PM in Netduino Plus 2 (and Netduino Plus 1)

hi sir

i am waiting long time for this.

thanks so much..!

my lcd is

http://www.dx.com/p/...75#.VMFRQfmSx8E

it dont have touching and i dont need

But can we use Netduino Helpers Font ?

#61242 Internet data transfer

Posted by asciiman on 13 January 2015 - 07:32 PM in Netduino Plus 2 (and Netduino Plus 1)

Hi

I wanna send and receive image from internet.

Whic is the best way.

I try WCF service but it use xmlreader and xmlreader is not recommended for netduino?

#61106 TFT LCD (ILI9341)

Posted by asciiman on 31 December 2014 - 03:46 PM in Netduino Plus 2 (and Netduino Plus 1)

hi sir,

unfortunately i dont have any code.

#60965 Netduino 2 can't run N1(+ or not) code.

Posted by asciiman on 13 December 2014 - 06:07 PM in Netduino 2 (and Netduino 1)

hi Chris

I cant use ST7735 chip with Fabienroyer code.

Is this possible with Neduino2+

#60434 Camera recommendation

Posted by asciiman on 16 October 2014 - 04:40 PM in Netduino Plus 2 (and Netduino Plus 1)

hi

I need simple camera module with ready c# code?

Which camera wolud you suggest?

#59957 SD Unmount error

Posted by asciiman on 30 August 2014 - 08:44 PM in Netduino 2 (and Netduino 1)

Hi

I can read and write to SD with Netduino 2 and microSD adapter.

but when i call UnmountSD() method occurs an System.IO.IOExecption error.

I am using Samsung MicroSD 2gb

#59908 Microframework static constructor method

Posted by asciiman on 26 August 2014 - 05:50 PM in Visual Studio

hi,

This is not good because i am reading settings from xml file in static void main { } block and then assign this values to other static members in Information.cs (class)

after this

I use this values when need. (Access the corresponding class)

#59873 Microframework static constructor method

Posted by asciiman on 24 August 2014 - 09:53 PM in Visual Studio

Is this a bug.

In .Net Microframework, all static constructor methods fired immediately.

In .Net Framework, constructor methods fired when access the class.

#59826 Netduino Unique ID

Posted by asciiman on 21 August 2014 - 06:28 AM in Netduino 2 (and Netduino 1)

thnx

#59710 TFT LCD Display

Posted by asciiman on 14 August 2014 - 07:22 AM in Netduino 2 (and Netduino 1)

hi

http://forums.netdui...ft-lcd-ili9341/

sir

alesbedac

wrote this code and it works but slowly

i hope so alesbedac write new code

#59393 Netduino Unique ID

Posted by asciiman on 25 July 2014 - 01:08 PM in Netduino 2 (and Netduino 1)

Hi sir,

When I use EEPROM that somebody can read and write on other EEPROM isnt it?

Is EEPROM has uniqueID ?