protected async override void OnResume()
{
Log.Info(TAG, "OnResume");
base.OnResume();
var portInfo = Intent.GetParcelableExtra(EXTRA_TAG) as UsbSerialPortInfo;
int vendorId = portInfo.VendorId;
int deviceId = portInfo.DeviceId;
int portNumber = portInfo.PortNumber;
Log.Info(TAG, string.Format("VendorId: {0} DeviceId: {1} PortNumber: {2}", vendorId, deviceId, portNumber));
var drivers = await MainActivity.FindAllDriversAsync(usbManager);
var driver = drivers.Where((d) => d.Device.VendorId == vendorId && d.Device.DeviceId == deviceId).FirstOrDefault();
if (driver == null)
{
throw new Exception("Driver specified in extra tag not found.");
}
port = driver.Ports[portNumber];
if (port == null)
{
titleTextView.Text = "No serial device.";
return;
}
Log.Info(TAG, "port=" + port);
titleTextView.Text = "Serial device: " + port.GetType().Name;
serialIoManager = new SerialInputOutputManager(port)
{
BaudRate = 4800,
DataBits = 8,
StopBits = StopBits.One,
Parity = Parity.None,
};
serialIoManager.DataReceived += (sender, e) => {
RunOnUiThread(() => {
UpdateReceivedData(e.Data);
});
};
serialIoManager.ErrorReceived += (sender, e) => {
RunOnUiThread(() => {
var intent = new Intent(this, typeof(MainActivity));
StartActivity(intent);
});
};
Log.Info(TAG, "Starting IO manager ..");
try
{
serialIoManager.Open(usbManager);
}
catch (Java.IO.IOException e)
{
titleTextView.Text = "Error opening device: " + e.Message;
return;
}
}