How to disconnect device or close adapter #247
Description
It doesn't work when i use disconnect device. so What am I supposed to do
var adapter = bluetooth.DefaultAdapter
func main() {
wait()
println("enabling")
// Enable BLE interface.
must("enable BLE stack", adapter.Enable())
ch := make(chan bluetooth.ScanResult, 1)
// Start scanning.
println("scanning...")
err := adapter.Scan(func(adapter *bluetooth.Adapter, result bluetooth.ScanResult) {
println("found device:", result.Address.String(), result.RSSI, result.LocalName())
if result.Address.String() == "10:52:1C:69:DA:EE" {
adapter.StopScan()
ch <- result
}
})
var device *bluetooth.Device
select {
case result := <-ch:
device, err = adapter.Connect(result.Address, bluetooth.ConnectionParams{})
if err != nil {
println(err.Error())
return
}
println("connected to ", result.Address.String())
}
// get services
println("discovering services/characteristics")
srvcs, err := device.DiscoverServices(nil)
must("discover services", err)
// buffer to retrieve characteristic data
buf := make([]byte, 255)
for _, srvc := range srvcs {
println("- service", srvc.UUID().String())
chars, err := srvc.DiscoverCharacteristics(nil)
if err != nil {
println(err)
}
for _, char := range chars {
println("-- characteristic", char.UUID().String())
n, err := char.Read(buf)
if err != nil {
println(" ", err.Error())
} else {
println(" data bytes", strconv.Itoa(n))
println(" value =", string(buf[:n]))
}
}
}
err = device.Disconnect()
if err != nil {
println(err)
}
done()
}
func must(action string, err error) {
if err != nil {
panic("failed to " + action + ": " + err.Error())
}
}
func wait() {
time.Sleep(3 * time.Second)
}
// done just blocks forever, allows USB CDC reset for flashing new software.
func done() {
println("Done.")
time.Sleep(1 * time.Hour)
}