Develop Reference

C# - SerialPort Encoding help needed

I need help with my program with which I want to read codes from several microcontrollers simultaneously and translate them into plain text. There is only one serial interface where all codes are collected. The translation of the codes works, but I have the problem that the codes are not read correctly. He makes pauses again and again where there are no gaps and where there are gaps (500 micro sec. ) He doesn't always recognize them correctly.
Here's part of the code:
public byte[] block = new byte[4096];
public int posBlock = 0;
public void Read(object sender, SerialDataReceivedEventArgs e)
{
console_.WriteLine("--------------------------------------------------");
console_.WriteLine("Void: Read(object sender, SerialDataReceivedEventArgs e)");
int offset = 0, count = serialPort.BytesToRead, i = 0;
byte[] rd = new byte[count];
serialPort.Read(rd, offset, count);
for (int buffer = 0; buffer < count; buffer++) { block[posBlock + buffer] = rd[buffer]; i = buffer; }
i++;
posBlock += i;
string rcpausgabe = null;
for (int i2 = 0; i2 < posBlock; i2++) { rcpausgabe += " " + (int)(block[i2]); }
//WriteProtocol(global_.variables.protocol_other, rcpausgabe, true);
console_.WriteLine("ReadCode: " + rcpausgabe);
if (IsDecode == false) { Zersetzten(); } else { console_.WriteLine("Add but not Zersetzen()"); }
IsDecode = false;
console_.WriteLine("--------------------------------------------------");
}
bool IsDecode = true;
public int ib = 0;
public string bs = null;
private void Zersetzten()
{
IsDecode = true;
console_.WriteLine("--------------------------------------------------");
console_.WriteLine("Void: Zersetzten()");
byte[] b = new byte[4096];
while (!(ib >= posBlock))
{
for (int i7 = 0; i7 < b[1] + 3; i7++)
{
string rcpausgabe1 = null;
b[i7] = block[ib];
ib++;;
if (i7+1 == (b[1] + 3))
{
Thread.Sleep(500);
console_.WriteLine("Decoding b");
for (int i2 = 0; i2 < b[1]+3; i2++) { rcpausgabe1 += " " + (int)(b[i2]); }
console_.WriteLine("Decoding Code: " + rcpausgabe1);
bs = rcpausgabe1;
Decoding(b);
}
}
}
IsDecode = false;
block = new byte[4096];
posBlock = 0;
ib = posBlock;
console_.WriteLine("--------------------------------------------------");
}
I have programmed my own console (console_) to help me with this, which allows me to track all processes in real time.
I also thank everyone for their answers in advance.
(I translated this text with Pons translator because my english is not so good)

I can't comment, so I have to use post to help you clarify your question.
I'll edit my answer if you could provide more detail.
Make your question clearer.
What result do you expect and what kind of phenomena do you observe.
Make minimal, reproducible example
Apparently Read(object sender, SerialDataReceivedEventArgs e) is not called inside of your post.
While your problem is reading is "paused", which piece of code is calling Read could be essential.
What is "pause" and what is "Gap".
He makes pauses again and again where there are no gaps and where there are gaps (500 micro sec.
I could only guess your program will "pause" when there is a gap, but having no idea about what "gap" and "pause" are.
What does for (int i7 = 0; i7 < b[1] + 3; i7++) and for (int i2 = 0; i2 < b[1]+3; i2++) want do achieve?
You're using b[1] for indexing and b[1] is changed while you're receiving data.
Edit: Adding How to create a Minimal, Reproducible Example.
Edit2: Point out a strange piece of code in for loop.

I am not sure what is wrong with you about the code you provided.
However, you could refer to [C#, need to receive data from microcontroller to receive data from microcontroller)
to know how to achieve the data from the microcontroller.

Matching two imageBox controls (EmguCV)

Currently I'm working with a fingerletter recognition using visual studio 2013 C# along with emguCV. i already have a database using ms access and a program which allow me to add images(in graysacle already) to it.
I've got 2 imageBox (imageBox0, imageBox1, imageBox2).., imageBox0 displays the live streaming of my camera., imageBox1 displays the processed image of imageBox0 (contour of my hand, grayscale, rectangle) and imageBox2 displays a selected image from the ms access database.
What I needed is a way to recognize an image from imageBox1 that is similar to imageBox2 or (in the whole images inside the database)
Here are snapshots of what I am doing:
I am using EmguCV version 2.
private Image GetImgFromDB()
{
if (rowNumber >= 0)
{
byte[] FetchedImgBytes = (byte[])LocalDataTable.Rows[rowNumber]["alphaImage"];
MemoryStream stream = new MemoryStream(FetchedImgBytes);
FetchedImg = Image.FromStream(stream);
txtAlphaName.Text = (string)LocalDataTable.Rows[rowNumber]["AlphaName"];
Bitmap FetchedImgCV = (Bitmap)FetchedImg;
normalizedMasterImage = new Image<Gray, Byte>(FetchedImgCV);
return FetchedImg;
}
else
{
MessageBox.Show("There are no images in the dataase yet. add some Please");
//return null;
}
return null;
} `

I've been though this with quiet a good degree of success. Mine compares two images and you set the percentage differences between to two to raise an alert.
The key is to compare hashes, not raw data...
class bitmapCompare
{
public enum CompareResult
{
ciCompareOk,
ciPixelMismatch,
ciSizeMismatch
};
public static CompareResult Compare(bool useHash, Bitmap bmp1, Bitmap bmp2, out double err, out Bitmap diff)
{
CompareResult cr = CompareResult.ciCompareOk;
int er = 0;
err = 0;
diff = new Bitmap(bmp1.Width, bmp1.Height);
//Test to see if we have the same size of image
if (bmp1.Size != bmp2.Size)
{
cr = CompareResult.ciSizeMismatch;
err = 100;
}
else
{
//Convert each image to a byte array
System.Drawing.ImageConverter ic =
new System.Drawing.ImageConverter();
byte[] btImage1 = new byte[1];
btImage1 = (byte[])ic.ConvertTo(bmp1, btImage1.GetType());
byte[] btImage2 = new byte[1];
btImage2 = (byte[])ic.ConvertTo(bmp2, btImage2.GetType());
//Compute a hash for each image
SHA256Managed shaM = new SHA256Managed();
byte[] hash1 = shaM.ComputeHash(btImage1);
byte[] hash2 = shaM.ComputeHash(btImage2);
//Compare the hash values
if (useHash)
{
for (int i = 0; i < hash1.Length && i < hash2.Length; i++)
{
if (hash1[i] != hash2[i])
{
er++;
cr = CompareResult.ciPixelMismatch;
}
}
}
else
{
int totalPixels = 0;
er = 0;
for (int x = 0; x < bmp1.Width; x++)
{
for (int y = 0; y < bmp1.Height; y++)
{
totalPixels++;
if (bmp1.GetPixel(x, y) != bmp2.GetPixel(x, y))
{
diff.SetPixel(x, y, Color.Black);
er++;
cr = CompareResult.ciPixelMismatch;
}
else
diff.SetPixel(x, y, Color.White);
}
}
System.Diagnostics.Debug.WriteLine("Total pixels:{0}", totalPixels);
System.Diagnostics.Debug.WriteLine("Diff pixels:{0}", er);
if (er > 0)
err = (double)er / ((double)bmp1.Height * (double)bmp1.Width);
else
err = 0;
if (err > 0) err = Math.Round(err*100, 1);
if (err > 100) err = 100;
}
}
return cr;
}
Feel free to change, this was only a POC, nothing production.

Play video frame by frame performance issues

I want to play a video (mostly .mov with Motion JPEG) in frame by frame mode with changing framerate. I have a function who gives me a framenumber and then I have to jump there. It will be mostly in one direction but can skip a few frames from time to time; also the velocity is not constant.
So I have a timer asking every 40ms about a new framenumber and setting the new position.
My first approach now is with DirectShow.Net (Interop.QuartzTypeLib). Therefore I render and open the video and set it to pause to draw the picture in the graph
FilgraphManagerClass media = new FilgraphManagerClass();
media.RenderFile(FileName);
media.pause();
Now I will just set a new position
media.CurrentPosition = framenumber * media.AvgTimePerFrame;
Since the video is in pause mode it will then draw every requested new position (frame). Works perfectly fine but really slow... the video keeps stuttering and lagging and its not the video source; there are enough frames recorded to play a fluent video.
With some performance tests I found out that the LAV-Codec is the bottleneck here. This is not included directly in my project since its a DirectShow-Player it will be cast through my codec pack I installed on my PC.
Ideas:
Using the LAV-Codec by myself directly in C#. I searched but everyone is using DirectShow it seems, building their own filters and not using existing ones directly in the project.
Instead of seeking or setting the time, can I get single frames just by the framenumber and draw them simply?
Is there a complete other way to archive what I want to do?
Background:
This project has to be a train simulator. We recorded real time videos of trains driving from inside the cockpit and know which frame is what position. Now my C# programm calculates the position of the train in dependence of time and acceleration, gives back the appropriate framenumber and draw this frame.
Additional Information:
There is another project (not written by me) in C/C++ who uses DirectShow and the avcodec-LAV directly with a similar way I do and it works fine! Thats because I had the idea to use a codec / filter like the avrcodec-lav by myself. But I can't find an interop or interface to work with C#.
Thanks everyone for reading this and trying to help! :)

Obtaining specific frame by seeking filter graph (the entire pipeline) is pretty slow since every seek operation involves the following on its backyard: flushing everything, possibly re-creating worker threads, seeking to first key frame/splice point/clean point/I-Frame before the requested time, start of decoding starting from found position skipping frames until originally requested time is reached.
Overall, the method works well when you scrub paused video, or retrieve specific still frames. When however you try to play this as smooth video, it eventually causes significant part of the effort to be wasted and spent on seeking within video stream.
Solutions here are:
re-encode video to remove or reduce temporal compression (e.g. Motion JPEG AVI/MOV/MP4 files)
whenever possible prefer to skip frames and/or re-timestamp them according to your algorithm instead of seeking
have a cached of decoded video frames and pick from there, populate them as necessary in worker thread
The latter two are unfortunately hard to achieve without advanced filter development (where continuous decoding without interruption by seeking operations is the key to achieving decent performance). With basic DirectShow.Net you only have basic control over streaming and hence the first item from the list above.

Wanted to post a comment instead of an answer, but don't have the reputation. I think your heading in the wrong direction with Direct Show. I've been messing with motion-jpeg for a few years now between C# & Android, and have gotten great performance with built-in .NET code (for converting byte-array to Jpeg frame) and a bit of multi-threading. I can easily achieve over 30fps from multiple devices with each device running in it's own thread.
Below is an older version of my motion-jpeg parser from my C# app 'OmniView'. To use, just send the network stream to the constructor, and receive the OnImageReceived event. Then you can easily save the frames to the hard-drive for later use (perhaps with the filename set to the timestamp for easy lookup). For better performance though, you will want to save all of the images to one file.
using OmniView.Framework.Helpers;
using System;
using System.IO;
using System.Text;
using System.Windows.Media.Imaging;
namespace OmniView.Framework.Devices.MJpeg
{
public class MJpegStream : IDisposable
{
private const int BUFFER_SIZE = 4096;
private const string tag_length = "Content-Length:";
private const string stamp_format = "yyyyMMddHHmmssfff";
public delegate void ImageReceivedEvent(BitmapImage img);
public delegate void FrameCountEvent(long frames, long failed);
public event ImageReceivedEvent OnImageReceived;
public event FrameCountEvent OnFrameCount;
private bool isHead, isSetup;
private byte[] buffer, newline, newline_src;
private int imgBufferStart;
private Stream data_stream;
private MemoryStream imgStreamA, imgStreamB;
private int headStart, headStop;
private long imgSize, imgSizeTgt;
private bool useStreamB;
public volatile bool EnableRecording, EnableSnapshot;
public string RecordPath, SnapshotFilename;
private string boundary_tag;
private bool tagReadStarted;
private bool enableBoundary;
public volatile bool OututFrameCount;
private long FrameCount, FailedCount;
public MJpegStream() {
isSetup = false;
imgStreamA = new MemoryStream();
imgStreamB = new MemoryStream();
buffer = new byte[BUFFER_SIZE];
newline_src = new byte[] {13, 10};
}
public void Init(Stream stream) {
this.data_stream = stream;
FrameCount = FailedCount = 0;
startHeader(0);
}
public void Dispose() {
if (data_stream != null) data_stream.Dispose();
if (imgStreamA != null) imgStreamA.Dispose();
if (imgStreamB != null) imgStreamB.Dispose();
}
//=============================
public void Process() {
if (isHead) processHeader();
else {
if (enableBoundary) processImageBoundary();
else processImage();
}
}
public void Snapshot(string filename) {
SnapshotFilename = filename;
EnableSnapshot = true;
}
//-----------------------------
// Header
private void startHeader(int remaining_bytes) {
isHead = true;
headStart = 0;
headStop = remaining_bytes;
imgSizeTgt = 0;
tagReadStarted = false;
}
private void processHeader() {
int t = BUFFER_SIZE - headStop;
headStop += data_stream.Read(buffer, headStop, t);
int nl;
//
if (!isSetup) {
byte[] new_newline;
if ((nl = findNewline(headStart, headStop, out new_newline)) >= 0) {
string tag = Encoding.UTF8.GetString(buffer, headStart, nl - headStart);
if (tag.StartsWith("--")) boundary_tag = tag;
headStart = nl+new_newline.Length;
newline = new_newline;
isSetup = true;
return;
}
} else {
while ((nl = findData(newline, headStart, headStop)) >= 0) {
string tag = Encoding.UTF8.GetString(buffer, headStart, nl - headStart);
if (!tagReadStarted && tag.Length > 0) tagReadStarted = true;
headStart = nl+newline.Length;
//
if (!processHeaderData(tag, nl)) return;
}
}
//
if (headStop >= BUFFER_SIZE) {
string data = Encoding.UTF8.GetString(buffer, headStart, headStop - headStart);
throw new Exception("Invalid Header!");
}
}
private bool processHeaderData(string tag, int index) {
if (tag.StartsWith(tag_length)) {
string val = tag.Substring(tag_length.Length);
imgSizeTgt = long.Parse(val);
}
//
if (tag.Length == 0 && tagReadStarted) {
if (imgSizeTgt > 0) {
finishHeader(false);
return false;
}
if (boundary_tag != null) {
finishHeader(true);
return false;
}
}
//
return true;
}
private void finishHeader(bool enable_boundary) {
int s = shiftBytes(headStart, headStop);
enableBoundary = enable_boundary;
startImage(s);
}
//-----------------------------
// Image
private void startImage(int remaining_bytes) {
isHead = false;
imgBufferStart = remaining_bytes;
Stream imgStream = getStream();
imgStream.Seek(0, SeekOrigin.Begin);
imgStream.SetLength(imgSizeTgt);
imgSize = 0;
}
private void processImage() {
long img_r = (imgSizeTgt - imgSize - imgBufferStart);
int bfr_r = Math.Max(BUFFER_SIZE - imgBufferStart, 0);
int t = (int)Math.Min(img_r, bfr_r);
int s = data_stream.Read(buffer, imgBufferStart, t);
int x = imgBufferStart + s;
appendImageData(0, x);
imgBufferStart = 0;
//
if (imgSize >= imgSizeTgt) processImageData(0);
}
private void processImageBoundary() {
int t = Math.Max(BUFFER_SIZE - imgBufferStart, 0);
int s = data_stream.Read(buffer, imgBufferStart, t);
//
int nl, start = 0;
int end = imgBufferStart + s;
while ((nl = findData(newline, start, end)) >= 0) {
int tag_length = boundary_tag.Length;
if (nl+newline.Length+tag_length > BUFFER_SIZE) {
appendImageData(start, nl+newline.Length - start);
start = nl+newline.Length;
continue;
}
//
string v = Encoding.UTF8.GetString(buffer, nl+newline.Length, tag_length);
if (v == boundary_tag) {
appendImageData(start, nl - start);
int xstart = nl+newline.Length + tag_length;
int xsize = shiftBytes(xstart, end);
processImageData(xsize);
return;
} else {
appendImageData(start, nl+newline.Length - start);
}
start = nl+newline.Length;
}
//
if (start < end) {
int end_x = end - newline.Length;
if (start < end_x) {
appendImageData(start, end_x - start);
}
//
shiftBytes(end - newline.Length, end);
imgBufferStart = newline.Length;
}
}
private void processImageData(int remaining_bytes) {
if (EnableSnapshot) {
EnableSnapshot = false;
saveSnapshot();
}
//
try {
BitmapImage img = createImage();
if (EnableRecording) recordFrame();
if (OnImageReceived != null) OnImageReceived.Invoke(img);
FrameCount++;
}
catch (Exception) {
// output frame error ?!
FailedCount++;
}
//
if (OututFrameCount && OnFrameCount != null) OnFrameCount.Invoke(FrameCount, FailedCount);
//
useStreamB = !useStreamB;
startHeader(remaining_bytes);
}
private void appendImageData(int index, int length) {
Stream imgStream = getStream();
imgStream.Write(buffer, index, length);
imgSize += (length - index);
}
//-----------------------------
private void recordFrame() {
string stamp = DateTime.Now.ToString(stamp_format);
string filename = RecordPath+"\\"+stamp+".jpg";
//
ImageHelper.Save(getStream(), filename);
}
private void saveSnapshot() {
Stream imgStream = getStream();
//
imgStream.Position = 0;
Stream file = File.Open(SnapshotFilename, FileMode.Create, FileAccess.Write);
try {imgStream.CopyTo(file);}
finally {file.Close();}
}
private BitmapImage createImage() {
Stream imgStream = getStream();
imgStream.Position = 0;
return ImageHelper.LoadStream(imgStream);
}
//-----------------------------
private Stream getStream() {return useStreamB ? imgStreamB : imgStreamA;}
private int findNewline(int start, int stop, out byte[] data) {
for (int i = start; i < stop; i++) {
if (i < stop-1 && buffer[i] == newline_src[0] && buffer[i+1] == newline_src[1]) {
data = newline_src;
return i;
} else if (buffer[i] == newline_src[1]) {
data = new byte[] {newline_src[1]};
return i;
}
}
data = null;
return -1;
}
private int findData(byte[] data, int start, int stop) {
int data_size = data.Length;
for (int i = start; i < stop-data_size; i++) {
if (findInnerData(data, i)) return i;
}
return -1;
}
private bool findInnerData(byte[] data, int buffer_index) {
int count = data.Length;
for (int i = 0; i < count; i++) {
if (data[i] != buffer[buffer_index+i]) return false;
}
return true;
}
private int shiftBytes(int start, int end) {
int c = end - start;
for (int i = 0; i < c; i++) {
buffer[i] = buffer[end-c+i];
}
return c;
}
}
}

c# How to run a application faster

I am creating a word list of possible uppercase letters to prove how insecure 8 digit passwords are this code will write aaaaaaaa to aaaaaaab to aaaaaaac etc. until zzzzzzzz using this code:
class Program
{
static string path;
static int file = 0;
static void Main(string[] args)
{
new_file();
var alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789+-*_!$£^=<>§°ÖÄÜöäü.;:,?{}[]";
var q = alphabet.Select(x => x.ToString());
int size = 3;
int counter = 0;
for (int i = 0; i < size - 1; i++)
{
q = q.SelectMany(x => alphabet, (x, y) => x + y);
}
foreach (var item in q)
{
if (counter >= 20000000)
{
new_file();
counter = 0;
}
if (File.Exists(path))
{
using (StreamWriter sw = File.AppendText(path))
{
sw.WriteLine(item);
Console.WriteLine(item);
/*if (!(Regex.IsMatch(item, #"(.)\1")))
{
sw.WriteLine(item);
counter++;
}
else
{
Console.WriteLine(item);
}*/
}
}
else
{
new_file();
}
}
}
static void new_file()
{
path = #"C:\" + "list" + file + ".txt";
if (!File.Exists(path))
{
using (StreamWriter sw = File.CreateText(path))
{
}
}
file++;
}
}
The Code is working fine but it takes Weeks to run it. Does anyone know a way to speed it up or do I have to wait? If anyone has a idea please tell me.

Performance:
size 3: 0.02s
size 4: 1.61s
size 5: 144.76s
Hints:
removed LINQ for combination generation
removed Console.WriteLine for each password
removed StreamWriter
large buffer (128k) for file writing
const string alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789+-*_!$£^=<>§°ÖÄÜöäü.;:,?{}[]";
var byteAlphabet = alphabet.Select(ch => (byte)ch).ToArray();
var alphabetLength = alphabet.Length;
var newLine = new[] { (byte)'\r', (byte)'\n' };
const int size = 4;
var number = new byte[size];
var password = Enumerable.Range(0, size).Select(i => byteAlphabet[0]).Concat(newLine).ToArray();
var watcher = new System.Diagnostics.Stopwatch();
watcher.Start();
var isRunning = true;
for (var counter = 0; isRunning; counter++)
{
Console.Write("{0}: ", counter);
Console.Write(password.Select(b => (char)b).ToArray());
using (var file = System.IO.File.Create(string.Format(#"list.{0:D5}.txt", counter), 2 << 16))
{
for (var i = 0; i < 2000000; ++i)
{
file.Write(password, 0, password.Length);
var j = size - 1;
for (; j >= 0; j--)
{
if (number[j] < alphabetLength - 1)
{
password[j] = byteAlphabet[++number[j]];
break;
}
else
{
number[j] = 0;
password[j] = byteAlphabet[0];
}
}
if (j < 0)
{
isRunning = false;
break;
}
}
}
}
watcher.Stop();
Console.WriteLine(watcher.Elapsed);
}

Try the following modified code. In LINQPad it runs in < 1 second. With your original code I gave up after 40 seconds. It removes the overhead of opening and closing the file for every WriteLine operation. You'll need to test and ensure it gives the same results because I'm not willing to run your original code for 24 hours to ensure the output is the same.
class Program
{
static string path;
static int file = 0;
static void Main(string[] args)
{
new_file();
var alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789+-*_!$£^=<>§°ÖÄÜöäü.;:,?{}[]";
var q = alphabet.Select(x => x.ToString());
int size = 3;
int counter = 0;
for (int i = 0; i < size - 1; i++)
{
q = q.SelectMany(x => alphabet, (x, y) => x + y);
}
StreamWriter sw = File.AppendText(path);
try
{
foreach (var item in q)
{
if (counter >= 20000000)
{
sw.Dispose();
new_file();
counter = 0;
}
sw.WriteLine(item);
Console.WriteLine(item);
}
}
finally
{
if(sw != null)
{
sw.Dispose();
}
}
}
static void new_file()
{
path = #"C:\temp\list" + file + ".txt";
if (!File.Exists(path))
{
using (StreamWriter sw = File.CreateText(path))
{
}
}
file++;
}
}

your alphabet is missing 0
With that fixed there would be 89 chars in your set. Let's call it 100 for simplicity. The set you are looking for is all the 8 character length strings drawn from that set. There are 100^8 of these, i.e. 10,000,000,000,000,000.
The disk space they will take up depends on how you encode them, lets be generous - assume you use some 8 bit char set that contains the these characters, and you don't put in carriage returns, so one byte per char, so 10,000,000,000,000,000 bytes =~ 10 peta byes?
Do you have 10 petabytes of disk? (10000 TB)?
[EDIT] In response to 'this is not an answer':
The original motivation is to create the list? The shows how large the list would be. Its hard to see what could be DONE with the list if it was actualised, i.e. it would always be quicker to reproduce it than to load it. Surely whatever point could be made by producing the list can also be made by simply knowing it's size, which the above shows how to work it out.
There are LOTS of inefficiencies in you code, but if your questions is 'how can i quickly produce this list and write it to disk' the answer is 'you literally cannot'.
[/EDIT]

C# task async await smart card - UI thread blocked

I'm new to C#, and I'm trying to use task async await for a WinsForm GUI. I've read so many tutorials about it, but all of them implement tasks differently. Some tasks use functions, and others just put the code in to execute. Some use Task.Run() or just await. Furthermore, all the examples I've seen are of functions that are included in the UI class. I'm trying to run functions that are in classes that are within my UI. I'm just really confused now, and don't know what's right/wrong.
What I'm trying to do is write a file to an EEPROM, using the SpringCard API/ PC/SC library. I parse the file into packets and write it to the smart card. I also want to update a status label and progress bar. A lot of things can go wrong. I have flags set in the smart card, and right now I just a while loop running until it reads a certain flag, which will obviously stall the program if it's forever waiting for a flag.
I guess I'm just confused about how to set it up. Help. I've tried using Tasks. Here is my code so far.
/* Initialize open file dialog */
OpenFileDialog ofd = new OpenFileDialog();
ofd.Multiselect = false;
ofd.Filter = "BIN Files (.bin)|*.bin|HEX Files (.hex)|*.hex";
ofd.InitialDirectory = "C:";
ofd.Title = "Select File";
//Check open file dialog result
if (ofd.ShowDialog() != DialogResult.OK)
{
if (shade != null)
{
shade.Dispose();
shade = null;
}
return;
}
//progform.Show();
Progress<string> progress = new Progress<string>();
file = new ATAC_File(ofd.FileName);
try
{
cardchannel.DisconnectReset();
Task upgrade = upgradeASYNC();
if(cardchannel.Connect())
{
await upgrade;
}
else
{
add_log_text("Connection to the card failed");
MessageBox.Show("Failed to connect to the card in the reader : please check that you don't have another application running in background that tries to work with the smartcards in the same time");
if (shade != null)
{
shade.Dispose();
shade = null;
}
cardchannel = null;
}
}
private async Task upgradeASYNC()
{
int i = 0;
int totalpackets = 0;
add_log_text("Parsing file into packets.");
totalpackets = file.parseFile();
/*progress.Report(new MyTaskProgressReport
{
CurrentProgressAmount = i,
TotalProgressAmount = totalpackets,
CurrentProgressMessage = "Sending upgrade file..."
});*/
ST_EEPROMM24LR64ER chip = new ST_EEPROMM24LR64ER(this, cardchannel, file, EEPROM.DONOTHING);
bool writefile = chip.WriteFileASYNC();
if(writefile)
{
add_log_text("WRITE FILE OK.");
}
else
{
add_log_text("WRITE FILE BAD.");
}
}
In the file class:
public int parseFile()
{
FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
FileInfo finfo = new FileInfo(filename);
int readbytecount = 0;
int packetcount = 0;
int numofbytesleft = 0;
byte[] hash = new byte[4];
byte[] packetinfo = new byte[4];
byte[] filechunk = null;
/* Read file until all file bytes read */
while (size_int > readbytecount)
{
//Initialize packet array
filechunk = new byte[MAXDATASIZE];
//read into byte array of max write size
if (packetcount < numoffullpackets)
{
//Initialize packet info array
packetinfo[0] = (byte)((size_int + 1) % 0x0100); //packetcountlo
packetinfo[1] = (byte)((size_int + 1) / 0x0100); //packetcounthi
packetinfo[2] = (byte)((packetcount + 1) / 0x0100); //packetcounthi
packetinfo[3] = (byte)((packetcount + 1) % 0x0100); //packetcountlo
//read bytes from file into packet array
bytesread = br.Read(filechunk, 0, MAXDATASIZE);
//add number of bytes read to readbytecount
readbytecount += bytesread;
}
//read EOF into byte array of size smaller than max write size
else if (packetcount == numoffullpackets)
{
//find out how many bytes left to read
numofbytesleft = size_int - (MAXDATASIZE * numoffullpackets);
//Initialize packet info array
packetinfo[0] = (byte)((size_int + 1) / 0x0100); //packetcounthi
packetinfo[1] = (byte)((size_int + 1) % 0x0100); //packetcountlo
packetinfo[2] = (byte)((packetcount + 1) / 0x0100); //packetcounthi
packetinfo[3] = (byte)((packetcount + 1) % 0x0100); //packetcountlo
//Initialize array and add byte padding, MAXWRITESIZE-4 because the other 4 bytes will be added when we append the CRC
//filechunk = new byte[numofbytesleft];
for (int j = 0; j < numofbytesleft; j++)
{
//read byte from file
filechunk[j] = br.ReadByte();
//add number of bytes read to readbytecount
readbytecount++;
}
for (int j = numofbytesleft; j < MAXDATASIZE; j++)
{
filechunk[j] = 0xFF;
}
}
else
{
MessageBox.Show("ERROR");
}
//calculate crc32 on byte array
int i = 0;
foreach (byte b in crc32.ComputeHash(filechunk))
{
hash[i++] = b;
}
//Append hash to filechunk to create new byte array named chunk
byte[] chunk = new byte[MAXWRITESIZE];
Buffer.BlockCopy(packetinfo, 0, chunk, 0, packetinfo.Length);
Buffer.BlockCopy(filechunk, 0, chunk, packetinfo.Length, filechunk.Length);
Buffer.BlockCopy(hash, 0, chunk, (packetinfo.Length + filechunk.Length), hash.Length);
//Add chunk to byte array list
packetcount++;
PacketBYTE.Add(chunk);
}
parseCMD();
return PacketBYTE.Count;
}
In the EEPROM class:
public bool WriteFileASYNC()
{
int blocknum = ATAC_CONSTANTS.RFBN_RFstartwrite;
byte[] response = null;
CAPDU[] EEPROMcmd = null;
int packetCount = 0;
log("ATTEMPT: Read response funct flag.");
do
{
StopRF();
Thread.SpinWait(100);
StartRF();
log("ATTEMPT: Write function flag.");
while (!WriteFlag(ATAC_CONSTANTS.RFBN_functflag, EEPROM.UPLOADAPP)) ;
} while (ReadFunctFlag(ATAC_CONSTANTS.RFBN_responseflag, 0) != EEPROM.UPLOADAPP);
for (int EEPROMcount = 0; EEPROMcount < file.CmdBYTE.Count; EEPROMcount++)
{
string temp = "ATTEMPT: Write EEPROM #" + EEPROMcount.ToString();
log(temp);
EEPROMcmd = file.CmdBYTE[EEPROMcount];
while (EEPROMcmd[blocknum] != null)
{
if (blocknum % 32 == 0)
{
string tempp = "ATTEMPT: Write packet #" + packetCount.ToString();
log("ATTEMPT: Write packet #");
packetCount++;
}
do
{
response = WriteBinaryASYNC(EEPROMcmd[blocknum]);
} while (response == null);
blocknum++;
}
log("ATTEMPT: Write packet flag.");
while (!WriteFlag(ATAC_CONSTANTS.RFBN_packetflag, ATAC_CONSTANTS.RFflag)) ;
log("ATTEMPT: Write packet flag.");
do
{
StopRF();
Thread.SpinWait(300);
StartRF();
} while (!ReadFlag(ATAC_CONSTANTS.RFBN_packetresponseflag, ((blocknum/32) - 1)*(EEPROMcount+1)));
blocknum = ATAC_CONSTANTS.RFBN_RFstartwrite;
}
return true;
}

Tasks are threads.
When you write this:
Task upgrade = upgradeASYNC();
you are simply executing upgradeASYNC in a new thread.
When you write this:
await upgrade;
You are only waiting for the new thread to finish (before going to the next instruction).
And this method
private async Task upgradeASYNC()
returns a Task object only because you add the async keyword. But in the body of this method there is no await. So it just runs synchronously, like any thread job.
I don't have time to rewrite your code, i let that to another stackoverflow user. You should learn and work harder ;)