Golang LnxMaxConnections Examples

Example #1

File: option_linux.go Project: flemay/gatt

package option

import (
	"github.com/flemay/gatt"
	"github.com/flemay/gatt/linux/cmd"
)

var DefaultClientOptions = []gatt.Option{
	gatt.LnxMaxConnections(1),
	gatt.LnxDeviceID(-1, true),
}

var DefaultServerOptions = []gatt.Option{
	gatt.LnxMaxConnections(1),
	gatt.LnxDeviceID(-1, true),
	gatt.LnxSetAdvertisingParameters(&cmd.LESetAdvertisingParameters{
		AdvertisingIntervalMin: 0x00f4,
		AdvertisingIntervalMax: 0x00f4,
		AdvertisingChannelMap:  0x7,
	}),
}

Example #2

File: server_lnx.go Project: flemay/gatt

func main() {
	flag.Parse()
	d, err := gatt.NewDevice(
		gatt.LnxMaxConnections(*mc),
		gatt.LnxDeviceID(*dev, *chk),
		gatt.LnxSetAdvertisingParameters(&cmd.LESetAdvertisingParameters{
			AdvertisingIntervalMin: 0x00f4,
			AdvertisingIntervalMax: 0x00f4,
			AdvertisingChannelMap:  0x07,
		}),
	)

	if err != nil {
		log.Printf("Failed to open device, err: %s", err)
		return
	}

	// Register optional handlers.
	d.Handle(
		gatt.CentralConnected(func(c gatt.Central) { log.Println("Connect: ", c.ID()) }),
		gatt.CentralDisconnected(func(c gatt.Central) { log.Println("Disconnect: ", c.ID()) }),
	)

	// A mandatory handler for monitoring device state.
	onStateChanged := func(d gatt.Device, s gatt.State) {
		fmt.Printf("State: %s\n", s)
		switch s {
		case gatt.StatePoweredOn:
			// Get bdaddr with LnxSendHCIRawCommand()
			bdaddr(d)

			// Setup GAP and GATT services.
			d.AddService(service.NewGapService(*name))
			d.AddService(service.NewGattService())

			// Add a simple counter service.
			s1 := service.NewCountService()
			d.AddService(s1)

			// Add a simple counter service.
			s2 := service.NewBatteryService()
			d.AddService(s2)
			uuids := []gatt.UUID{s1.UUID(), s2.UUID()}

			// If id is zero, advertise name and services statically.
			if *id == time.Duration(0) {
				d.AdvertiseNameAndServices(*name, uuids)
				break
			}

			// If id is non-zero, advertise name and services and iBeacon alternately.
			go func() {
				for {
					// Advertise as a RedBear Labs iBeacon.
					d.AdvertiseIBeacon(gatt.MustParseUUID("5AFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"), 1, 2, -59)
					time.Sleep(*id)

					// Advertise name and services.
					d.AdvertiseNameAndServices(*name, uuids)
					time.Sleep(*ii)
				}
			}()

		default:
		}
	}

	d.Init(onStateChanged)
	select {}
}