我做一个串口调试助手,想练习串口数据的发送,用的是VS自带的serialport控件,发送数据和接收数据程序如下,接收数据时候,乱码:如图
测试程序如下,主要指点串口的接收部分
private void button3_Click(object sender, EventArgs e) //发送数据
{
try
{
if ( txtSendMessage.Text=="")
{
MessageBox.Show("发送信息为空", "消息提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
else
{
if (spSend.IsOpen == true)
{
byte[] data = Encoding.Unicode.GetBytes(txtSendMessage.Text);
string str = Convert.ToBase64String(data);
spSend.Write(str);
}
else
{
MessageBox.Show("串口没有打开", "消息提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
private void spReceive_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (spReceive.IsOpen == false) //如果串口关闭的,那么返回
return;
try
{
IsRecieve = true;
int n = spReceive.BytesToRead; //获得接收缓冲区的字节数
if (n < 1)
{
IsRecieve = false;
return;
}
byte[] buf = new byte[n];//声明一个临时数组用来存放当前来的串口数据,长度由读取到的字节决定
spReceive.Read(buf, 0, n);//读取缓冲区数据
rhbReceive.Invoke(new EventHandler(delegate
{
rhbReceive.Text = Encoding.UTF8.GetString(buf);
}));
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
return;
}
finally
{
Listening = false;
}
}