public async Task SendData(string msg)
{
var x = Encoding.UTF8.GetBytes(msg);
var p = new CancellationTokenSource();
// 第一次加载
if (serialPort == null)
{
serialPort = await getSerialPort();
}
if (serialPort != null)
{
// 运行过程中串口断开了
if (serialPort.serialPort == null)
{
serialPort.ReceiveHandler -= SerialPort_ReceiveHandler;
serialPort = await getSerialPort();
}
if (serialPort != null)
{
await serialPort.Send(x.Concat(new byte[] { 0x0D, 0x0A }).ToArray(), p.Token);
}
}
}
private async Task <SerialPortHelper> getSerialPort()
{
serialPort = await SerialCreater.Instance.Create(SerialEnum.Sim);
if (serialPort != null)
{
serialPort.ReceiveHandler += SerialPort_ReceiveHandler;
}
else
{
Debug.WriteLine("sim is null");
}
return(serialPort);
}
public async Task Send(BaseDirective item, int reSendTimes = 0)
{
try
{
waitForFeedbackDirectives.TryAdd(item.DirectiveId, new WaitForFeedBack(DateTime.Now, item, reSendTimes));
var directiveData = protocolProvider.GenerateDirectiveBuffer(item);
//第一次加载
if (serialPort == null)
{
serialPort = await getSerialPort();
}
if (serialPort != null)
{
// 运行过程中串口断开了
if (serialPort.serialPort == null)
{
serialPort.ReceiveHandler -= SpHelper_ReceiveHandler;
serialPort = await getSerialPort();
}
if (waitForFeedbackDirectives.ContainsKey(item.DirectiveId) && serialPort != null)
{
await serialPort.Send(directiveData, cancelTokenSource.Token);
}
}
}
catch (CustomException e)
{
Debug.WriteLine("send error->" + e.Message);
}
catch (TaskCanceledException)
{
Debug.WriteLine("send cancel");
}
catch (Exception e)
{
OnErrorEvent(new CustomException(e.Message + "Send", this.GetType().FullName,
ExceptionPriority.Unrecoverable), item);
}
}
public async Task Build()
{
string aqs = SerialDevice.GetDeviceSelector();
var dis = await DeviceInformation.FindAllAsync(aqs);
foreach (var each in dis)
{
Debug.WriteLine("portname:" + each.Name);
if (each.Name.IndexOf("USB", StringComparison.Ordinal) == -1 &&
each.Name != "MINWINPC" &&
each.Name.IndexOf("Virtual Serial Port", StringComparison.Ordinal) == -1)
{
continue;
}
var device = await SerialDevice.FromIdAsync(each.Id);
if (device == null)
{
Debug.WriteLine(each.Name + "is null");
continue;
}
var helper = new SerialPortHelper(device);
var cancellationToken = new CancellationTokenSource(3 * 1000).Token;
var cancellationCompletionSource = new TaskCompletionSource <SerialEnum>();
using (cancellationToken.Register(() => cancellationCompletionSource.TrySetResult(SerialEnum.Unknown)))
{
var task = await Task.WhenAny(helper.Open(), cancellationCompletionSource.Task);
Debug.WriteLine("open:" + task.Result);
if (task.Result != SerialEnum.Unknown)
{
serialHelpers[task.Result] = helper;
}
}
}
}