I am trying to write a program that connects to a Bluetooth Low Energy device (BLE), and then read a characteristic either on updates, or on a given interval.
My Peripheral is a Texas instruments CC2540 BLE device.
My starting point was looking at the example program from TI, that has a heart rate monitor:
http://processors.wiki.ti.com/index.php/Category:HealthDemo
However, this uses the dongle, and I am tasked at using the internal bluetooth 4.0 modem (going to make it on android later on, but for now, I just use windows).
Now my problem is that the dongle creates a COM port, but the internal modem does not. I still managed to use the 32feet API to scan and succesfully find the CC2540. However, from here I do not know what to do. I've tried calling the connect() method, but it always fails to connect, either by timeout or stating that there is a dead network.
Any ideas why this happens? Am i supposed to do something else than calling my device.connect() ?
Code snippet:
BluetoothClient cli;
BluetoothDeviceInfo[] peers;
BluetoothDeviceInfo device;
BluetoothAddress adr;
//... skipping code that finds the device and assigns the address to it.
if (device.InstalledServices.Length != 0)
{
try
{
//MessageBox.Show("attempting to connect");
cli.Connect(device.DeviceAddress, device.InstalledServices[2]);
//tbDeviceInfo.AppendText("\n\nConnected " + device.Connected);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
// i always get this exception.
}
}
解決方案
I do not want to mistake you , but 32feet currently does not support Bluetooth low energy. (As for Nov 2012).