1 // (c) Bernhard Tittelbach, 2013
8 zmq "github.com/vaughan0/go-zmq"
12 // ---------- Main Code -------------
22 const exponential_backof_activation_threshold int64 = 4
25 flag.StringVar(&pub_addr, "brokeraddr", "tcp://torwaechter.realraum.at:4243", "zmq address to send stuff to")
26 flag.StringVar(&tty_dev_, "ttydev", "/dev/ttyACM0", "path do tty uc device")
27 flag.UintVar(&serial_speed_, "serspeed", 0, "tty baudrate (0 to disable setting a baudrate e.g. in case of ttyACM)")
28 flag.BoolVar(&use_syslog_, "syslog", false, "log to syslog local1 facility")
29 flag.BoolVar(&enable_debug_, "debug", false, "debugging messages on")
33 func ConnectSerialToZMQ(pub_sock *zmq.Socket) {
35 if x:= recover(); x != nil { Syslog_.Println(x) }
38 serial_wr, serial_rd, err := OpenAndHandleSerial(tty_dev_, serial_speed_)
39 if err != nil { panic(err) }
40 defer close(serial_wr)
42 for incoming_ser_line := range(serial_rd) {
43 Syslog_.Printf("%s",incoming_ser_line)
44 if err := pub_sock.Send(incoming_ser_line); err != nil { Syslog_.Println(err.Error()) }
49 zmqctx, pub_sock := ZmqsInit(pub_addr)
50 if pub_sock == nil { panic("zmq socket creation failed") }
52 defer pub_sock.Close()
56 } else if use_syslog_ {
58 Syslog_.Print("started")
61 var backoff_exp uint32 = 0
63 start_time := time.Now().Unix()
64 ConnectSerialToZMQ(pub_sock)
65 run_time := time.Now().Unix() - start_time
66 if run_time > exponential_backof_activation_threshold {
69 time.Sleep(150*(1 << backoff_exp) * time.Millisecond)
70 if backoff_exp < 12 { backoff_exp++ }