Add more details for CC2650 demo

[majoyz]

I tried the CC2650 demo these days and add some details.

[fisherxu]

Thanks for the fix. Some little questions, why do we need change the device-model name? and what's the hcitool?

[majoyz]

Thanks for the fix. Some little questions, why do we need change the device-model name? and what's the hcitool?

The hcitool is a bluetooth tool on Linux, hcitool lescan can get the low energy bluetooth devices around the node and their name. It might has a length limit on some Linux version, on my node, the name is cut to "CC2650 Sen". The bluetooth mapper identify a device by this name.

[majoyz]

The code to get the name is here:

func (b *BLEConfig) Load() error {
	readConfigFile := ReadConfigFile{}
	readConfigMap := DeviceProfile{}
	err := readConfigFile.ReadFromConfigFile()
	if err != nil {
		return errors.New("Error while reading from configuration file " + err.Error())
	}
	err = readConfigMap.ReadFromConfigMap()
	if err != nil {
		return errors.New("Error while reading from config map " + err.Error())
	}
	b.Mqtt = readConfigFile.Mqtt
	b.Scheduler = readConfigFile.Scheduler
	b.Watcher = readConfigFile.Watcher
	// Assign device information obtained from config file
	for _, device := range readConfigMap.DeviceInstances {
		if strings.EqualFold(device.Model, readConfigFile.DeviceModelName) {
			b.Device.ID = device.ID
			b.Device.Name = device.Model
		}
	}

The device's name is from the device model name in the configmap.
The code to compare name is here:

func onPeripheralDiscovered(p gatt.Peripheral, a *gatt.Advertisement, rssi int) {
	if strings.EqualFold(a.LocalName, strings.Replace(deviceName, "-", " ", -1)) {
		klog.Infof("Device: %s found !!!! Stop Scanning for devices", deviceName)
		// Stop scanning once we've got the peripheral we're looking for.
		p.Device().StopScanning()
		klog.Infof("Connecting to %s", deviceName)
		p.Device().Connect(p)
	}
}

The a.LocalName is the name scaned.

[kubeedge-bot]

@majoyz: PR needs rebase.

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