private async Task PauseReceiving()
{
if (_serialIoManager == null || !_serialIoManager.IsOpen)
{
return;
}
try
{
_serialIoManager.Close();
await Task.Run(async() =>
{
while (_serialIoManager != null && _serialIoManager.IsOpen)
{
await Task.Delay(200);
}
});
ToastService.ToastShortMessage(AppResources.Port_Closed);
}
catch (Exception)
{
ToastService.ToastShortMessage(AppResources.Port_Closed_Error);
}
finally
{
NotifyPropertyChanged(nameof(PortCommand));
NotifyPropertyChanged(nameof(PortStatus));
}
}
private async Task SaveSettings()
{
try
{
await SETTINGS_STORE.SaveAsync(CurrentSettings);
MessagingCenter.Send <object>(this, "SettingsUpdated");
ToastService.ToastShortMessage(AppResources.Save_Success);
}
catch (Exception)
{
ToastService.ToastShortMessage(AppResources.Save_Failed);
}
}
private void WriteData(byte[] data)
{
if (_serialIoManager.IsOpen)
{
try
{
_port.Write(data, UsbWriteDataTimeOut);
}
catch (Exception)
{
ToastService.ToastShortMessage(AppResources.Write_Failed);
return;
}
_sentDataCount++;
NotifyPropertyChanged(nameof(SentDataCount));
}
}
private async void StartReceiving()
{
if (App.UsbManager == null || App.PortInfo == null)
{
ToastService.ToastShortMessage(AppResources.No_Device);
return;
}
var driver =
await FindDriversService.GetSpecificDriverAsync(App.UsbManager,
App.PortInfo);
if (driver != null)
{
_port = driver.Ports[App.PortInfo.PortNumber];
}
else
{
ToastService.ToastShortMessage(AppResources.No_Driver);
return;
}
CurrentDeviceName = _port.GetType().Name;
NotifyPropertyChanged(nameof(CurrentDeviceName));
_serialIoManager = new SerialInputOutputManager(_port)
{
BaudRate = CurrentSettings.BaudRate,
DataBits = CurrentSettings.DataBits,
StopBits = CurrentSettings.StopBits,
Parity = CurrentSettings.Parity
};
_serialIoManager.DataReceived += (sender, e) =>
{
Device.BeginInvokeOnMainThread(() => { UpdateReceivedData(e.Data); });
};
_serialIoManager.ErrorReceived += (sender, e) =>
{
Device.BeginInvokeOnMainThread(() =>
{
ToastService.ToastShortMessage(AppResources
.Received_Error);
});
};
ToastService.ToastShortMessage(AppResources.Port_Listening);
try
{
_serialIoManager.Open(App.UsbManager);
}
catch (Exception)
{
ToastService.ToastShortMessage(
$"{AppResources.Open_Failed}: {CurrentDeviceName}");
}
finally
{
NotifyPropertyChanged(nameof(PortCommand));
NotifyPropertyChanged(nameof(PortStatus));
}
}
