蓝盾调试工具：接收从串口过来的APDU

最新推荐文章于 2025-05-04 14:43:50 发布

原创最新推荐文章于 2025-05-04 14:43:50 发布 · 371 阅读

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#thread

本文介绍了一个基于串口通信的应用实例，展示了如何通过串口接收数据并更新UI显示。文章详细解释了串口数据接收过程及UI线程安全更新的方法。

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        private delegate void SafeWinFormsThreadDelegate(string msg);

        private void WriteMsg(string msg)
        {
            SafeWinFormsThreadDelegate d = new SafeWinFormsThreadDelegate(UpdateUI);
            Invoke(d, new object[] { msg });
        }
        private void UpdateUI(string msg)
        {
            this.tboxRec.Text = msg;
        }

        private void btnRec_Click(object sender, EventArgs e)
        {
            port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);
            btnRec.Enabled = false;
        }

        void port_DataReceived(object sender, SerialDataReceivedEventArgs e)   
        {   
            int rsLength = 0;   
            bool loop=true;               
            strBuilder.Remove(0, strBuilder.Length);
            while (loop)
            {
                if (port.BytesToRead == rsLength)
                {
                    loop = false;
                }
                else
                {
                    rsLength = port.BytesToRead;
                }
                //Thread.Sleep(100);
            }
            byte[] buf = new byte[rsLength];
            port.Read(buf, 0, rsLength);
            int i = 0;
            foreach (byte b in buf)
            {
                if (i > 0 && i % 2 == 0)
                {
                    strBuilder.Append(" ");
                }
                string strByt = b + "";
                int intByt = int.Parse(strByt);
                char charByt = (char)intByt;
                strBuilder.Append(charByt + "");
                i++;
            }
            string result = strBuilder.ToString();
            WriteMsg(result);   
        }