| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package main |
| |
| import ( |
| "fmt" |
| "os" |
| "os/signal" |
| "syscall" |
| "time" |
| |
| log "github.com/Sirupsen/logrus" |
| |
| "mynewt.apache.org/newt/util" |
| "mynewt.apache.org/newtmgr/nmxact/bledefs" |
| "mynewt.apache.org/newtmgr/nmxact/nmble" |
| "mynewt.apache.org/newtmgr/nmxact/nmxutil" |
| "mynewt.apache.org/newtmgr/nmxact/sesn" |
| "mynewt.apache.org/newtmgr/nmxact/xact" |
| "mynewt.apache.org/newtmgr/nmxact/xport" |
| ) |
| |
| func configExitHandler(x xport.Xport, s sesn.Sesn) { |
| onExit := func() { |
| if s.IsOpen() { |
| s.Close() |
| } |
| |
| x.Stop() |
| } |
| |
| sigChan := make(chan os.Signal, 1) |
| signal.Notify(sigChan) |
| |
| go func() { |
| for { |
| s := <-sigChan |
| switch s { |
| case os.Interrupt, syscall.SIGTERM: |
| go func() { |
| onExit() |
| os.Exit(0) |
| }() |
| |
| case syscall.SIGQUIT: |
| util.PrintStacks() |
| } |
| } |
| }() |
| } |
| |
| func main() { |
| nmxutil.SetLogLevel(log.DebugLevel) |
| //nmxutil.SetLogLevel(log.InfoLevel) |
| |
| // Initialize the BLE transport. |
| params := nmble.NewXportCfg() |
| params.SockPath = "/tmp/blehostd-uds" |
| params.BlehostdPath = "blehostd" |
| params.DevPath = "/dev/cu.usbmodem142141" |
| |
| x, err := nmble.NewBleXport(params) |
| if err != nil { |
| fmt.Fprintf(os.Stderr, "error creating BLE transport: %s\n", |
| err.Error()) |
| os.Exit(1) |
| } |
| |
| // Start the BLE transport. |
| if err := x.Start(); err != nil { |
| fmt.Fprintf(os.Stderr, "error starting BLE transport: %s\n", |
| err.Error()) |
| os.Exit(1) |
| } |
| defer x.Stop() |
| |
| // Find a device to connect to: |
| // * Peer has name "nimble-bleprph" |
| // * We use a random address. |
| dev, err := nmble.DiscoverDeviceWithName( |
| x, bledefs.BLE_ADDR_TYPE_RANDOM, 10*time.Second, "c4") |
| if err != nil { |
| fmt.Fprintf(os.Stderr, "error discovering device: %s\n", err.Error()) |
| os.Exit(1) |
| } |
| if dev == nil { |
| fmt.Fprintf(os.Stderr, "couldn't find device") |
| os.Exit(1) |
| } |
| |
| // Prepare a BLE session: |
| // * Plain NMP (not tunnelled over OIC). |
| // * We use a random address. |
| sc := sesn.NewSesnCfg() |
| sc.MgmtProto = sesn.MGMT_PROTO_OMP |
| sc.Ble.OwnAddrType = bledefs.BLE_ADDR_TYPE_RANDOM |
| sc.PeerSpec.Ble = *dev |
| |
| s, err := x.BuildSesn(sc) |
| if err != nil { |
| fmt.Fprintf(os.Stderr, "error creating BLE session: %s\n", err.Error()) |
| os.Exit(1) |
| } |
| |
| configExitHandler(x, s) |
| |
| // Repeatedly: |
| // * Connect to peer if unconnected. |
| // * Send an echo command to peer. |
| // |
| // If blehostd crashes or the controller is unplugged, nmxact should |
| // recover on the next connect attempt. |
| for { |
| if !s.IsOpen() { |
| // Connect to the peer (open the session). |
| if err := s.Open(); err != nil { |
| fmt.Fprintf(os.Stderr, "error starting BLE session: %s\n", |
| err.Error()) |
| time.Sleep(time.Second) |
| continue |
| } |
| } |
| |
| // Send an echo command to the peer. |
| c := xact.NewEchoCmd() |
| c.Payload = "hello" |
| |
| res, err := c.Run(s) |
| if err != nil { |
| fmt.Fprintf(os.Stderr, "error executing echo command: %s\n", |
| err.Error()) |
| continue |
| } |
| |
| if res.Status() != 0 { |
| fmt.Printf("Peer responded negatively to echo command; status=%d\n", |
| res.Status()) |
| } |
| |
| eres := res.(*xact.EchoResult) |
| fmt.Printf("Peer echoed back: %s\n", eres.Rsp.Payload) |
| } |
| } |