C#串口通信错误
private void timer1_Tick(object sender, EventArgs e)
{
textBox_Time.Text = DateTime.Now.ToString();
char c1 = (char)33153; //81H 81H
char c2 = (char)21004; //52H 0cH
string outdata = c1.ToString() + c2.ToString();
serialPort_tem.Write(outdata);
}