private void btnRead_Click(object sender, EventArgs e)
{
AbstractRecordInfo info = RecordInfoFactory.CreateInfo((int)comboBox3.SelectedValue);
int no = Convert.ToInt32(numericUpDown1.Value * 10 + numericUpDown2.Value);
info.MakeSendBuffer();
info.SetReadNo(no);
arInfo = info;
this.btnRead.Enabled = false;
tbsend.Text = "";
tbread.Clear();
try
{
foreach (byte b in info.SendBuffer)
{
tbsend.Text += b.ToString("X2") + " ";
}
serialPort1.PortName = comboBox1.Text;
serialPort1.BaudRate = Convert.ToInt32(comboBox2.Text);
serialPort1.Open();
serialPort1.DiscardOutBuffer();
serialPort1.DiscardInBuffer();
serialPort1.Write(info.SendBuffer, 0, info.SendBuffer.Length);
bWaitread = true;
int count = 0;
Boolean istimeout = false;
while (bWaitread)
{
if (count > 200)
{
istimeout = true;
break;
}
else
{
Thread.Sleep(100);
Application.DoEvents();
}
count++;
}
serialPort1.DiscardInBuffer();
serialPort1.Close();
if (istimeout)
{
//MessageForm.Show("读取超时",new Exception());//MessageBox.Show("读取超时!");
this.Close();
throw new Exception("读取超时");
}
else
{
int toread = Convert.ToInt32((int)(arInfo.DataBuffer[2] << 8) + (int)arInfo.DataBuffer[3]);
foreach (byte b in arInfo.DataBuffer)
{
tbread.AppendText(b.ToString("X2") + " ");
}
if (arInfo.DataBuffer.Length >= (toread + 6))
{
int len = arInfo.DataBuffer.Length;
if (len > toread + 6)
{
len = toread + 6;
}
byte[] tocrc = new byte[len - 2];
Array.Copy(arInfo.DataBuffer, tocrc, len - 2);
byte[] crc = UtilTools.CRCCalc(tocrc);
if (true)//crc[0] == arInfo.DataBuffer[len - 2] && crc[1] == arInfo.DataBuffer[len - 1])
{
info.ProcBufferWhenReadEnd(len);
info.ReadFinish();
isReaded = true;
MessageBox.Show("读取完成!");
this.Close();
}
else
{
isReaded = false;
MessageBox.Show("校验失败!");
}
}
else
{
isReaded = false;
MessageBox.Show("读取失败!");
}
}
this.btnRead.Enabled = true;
}
catch (Exception ex)
{
MessageForm.Show(ex.Message, ex);//MessageBox.Show(ex.Message);
this.btnRead.Enabled = true;
}
}
