private void btnDownload_Click(object sender, EventArgs e){btnDownload.Enabled = false;pBarLoading.Visible = false;if (!this.connect()){Debug.WriteLine("Udp server building unsuccessfully");textBoxStatus.ForeColor = Color.Red;textBoxStatus.AppendText("Udp server building unsuccessfully\r\n");textBoxStatus.ForeColor = Color.Black;btnDownload.Enabled = true;return;}try{loaderReader = new StreamReader(textBoxFile.Text);}catch (Exception ex){Debug.WriteLine("Error: " + ex.Message);textBoxStatus.ForeColor = Color.Red;textBoxStatus.AppendText("Read hex file unsuccessfully\r\n");textBoxStatus.ForeColor = Color.Black;loaderReader.Close();loaderServer.Close();btnDownload.Enabled = true;return;}loaderFrame = new SerialFrame();DateTime startTime = DateTime.Now;IPEndPoint clientPoint = new IPEndPoint(IPAddress.Any, 0);if (!loaderServer.Read(readyMsg,timeSpan)){Debug.WriteLine("Error: Timeout receive ready message from bootloader");textBoxStatus.ForeColor = Color.Red;textBoxStatus.AppendText("Timeout receive ready message from bootloader\r\n");textBoxStatus.ForeColor = Color.Black;loaderServer.Close();loaderReader.Close();btnDownload.Enabled = true;return;}if (!erase()){textBoxStatus.ForeColor = Color.Red;textBoxStatus.AppendText("Erase unsuccessfully\r\n");textBoxStatus.ForeColor = Color.Black;loaderReader.Close();loaderServer.Close();btnDownload.Enabled = true;return;}pBarLoading.Refresh();pBarLoading.Visible = true;pBarLoading.Value = 0;pBarLoading.Maximum = loaderLines;pBarLoading.Step = 1;string recordLine;Address_U = 0;bool isNextLineUserID = false;bool isNextLineConfigBits = false;textBoxStatus.AppendText("\r\nDownloading hex file ...\r\n");try{while (loaderReader.Peek() >= 0){pBarLoading.PerformStep();recordLine = loaderReader.ReadLine();if (recordLine.Contains(EXTEND_TOKEN) == true){if (recordLine.Contains(USER_ID_TOKEN) == true){isNextLineUserID = true;continue;}else if (recordLine.Contains(CONFIG_BITS_TOKEN) == true){const int ADDR_U_START_INDEX = 9;const int ADDR_U_LENGTH = 4;string addrU = recordLine.Substring(ADDR_U_START_INDEX, ADDR_U_LENGTH);Address_U = Convert.ToInt32(addrU, 16) << 16;isNextLineConfigBits = true;continue;}else{const int ADDR_U_START_INDEX = 9;const int ADDR_U_LENGTH = 4;string addrU = recordLine.Substring(ADDR_U_START_INDEX, ADDR_U_LENGTH);Address_U = Convert.ToInt32(addrU, 16) << 16;continue;}}else if (((recordLine.Contains(J_TYPE_CONFIG_BITS_1) == true) ||(recordLine.Contains(J_TYPE_CONFIG_BITS_2) == true) ||(recordLine.Contains(J_TYPE_CONFIG_BITS_3) == true) ||(recordLine.Contains(J_TYPE_CONFIG_BITS_4) == true) ||(recordLine.Contains(J_TYPE_CONFIG_BITS_5) == true) ||(recordLine.Contains(J_TYPE_CONFIG_BITS_6) == true) ||(recordLine.Contains(J_TYPE_CONFIG_BITS_TOKEN_1) == true) ||(recordLine.Contains(J_TYPE_CONFIG_BITS_TOKEN_2) == true)) &&(Address_U == 0x010000)){if (!DownloadConfigLine(recordLine)){Debug.WriteLine("Error found during configuration bits programming");loaderReader.Close();loaderServer.Close();btnDownload.Enabled = true;return;}continue;}else if (recordLine.Contains(END_OF_HEX_FILE_TOKEN) == true){break;}if (isNextLineUserID){isNextLineUserID = false;// do nothing;
                    }else if (isNextLineConfigBits){if (!DownloadConfigLine(recordLine)){Debug.WriteLine("Error found during configuration bits programming");loaderReader.Close();loaderServer.Close();btnDownload.Enabled = true;return;}isNextLineConfigBits = false;}else{if (!DownloadDataLine(recordLine)){Debug.WriteLine("Error found during data programming");loaderReader.Close();loaderServer.Close();btnDownload.Enabled = true;return;}}}}catch (Exception ex){Debug.WriteLine("Error: " + ex.Message);textBoxStatus.ForeColor = Color.Red;textBoxStatus.AppendText("Downloading failed\r\n");textBoxStatus.ForeColor = Color.Black;loaderServer.Close();loaderReader.Close();btnDownload.Enabled = true;return;}textBoxStatus.AppendText("Downloading completed\r\n");if (!run()){textBoxStatus.ForeColor = Color.Red;textBoxStatus.AppendText("Jump to Application unsuccessfully\r\n");textBoxStatus.ForeColor = Color.Black;loaderReader.Close();loaderServer.Close();btnDownload.Enabled = true;return;}loaderServer.Close();loaderReader.Close();btnDownload.Enabled = true;}