连接ble
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a96ba8549c
commit
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2
Makefile
2
Makefile
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@ -7,4 +7,6 @@ arm:
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release: arm
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ssh pi@192.168.0.21 "sudo systemctl stop ble.service"
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scp ./ble-ibeacon pi@192.168.0.21:~/
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aaa:
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ssh pi@192.168.0.21 "sudo systemctl start ble.service"
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255
main.go
255
main.go
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@ -1,139 +1,164 @@
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package main
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import (
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"encoding/binary"
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"encoding/hex"
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"errors"
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"flag"
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"fmt"
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"log"
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"strconv"
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"os"
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"strings"
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"time"
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"github.com/influxdata/influxdb/client/v2"
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"github.com/paypal/gatt"
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"github.com/paypal/gatt/examples/option"
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"myschools.me/suguo/ble-ibeacon/influx"
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)
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type IBeancon struct {
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Uuid string
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Major uint16
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Minor uint16
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}
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var done = make(chan struct{})
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func NewiBeacon(data []byte) (*IBeancon, error) {
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if len(data) < 25 || binary.BigEndian.Uint32(data) != 0x4c000215 {
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return nil, errors.New("not an iBeacon")
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}
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beacon := new(IBeancon)
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beacon.Uuid = strings.ToUpper(hex.EncodeToString(data[4:8]) + hex.EncodeToString(data[8:10]) + hex.EncodeToString(data[10:12]) + hex.EncodeToString(data[12:14]) + hex.EncodeToString(data[14:20]))
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beacon.Major = binary.BigEndian.Uint16(data[20:22])
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beacon.Minor = binary.BigEndian.Uint16(data[22:24])
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return beacon, nil
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}
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var (
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chn chan *client.Point
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)
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func init() {
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chn = make(chan *client.Point, 500)
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}
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func onPerhipheralDiscovered(p gatt.Peripheral, a *gatt.Advertisement, rssi int) {
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// if p.ID() != "78:2C:29:16:F2:78" {
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// return
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// }
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// if p.ID() != "90:98:38:F5:DA:60" {
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// return
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// }
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// if p.ID() != "E4:78:41:19:10:98" {
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// return
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// }
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// if !(p.ID() == "C6:1A:05:02:06:C0" || p.ID() == "90:98:38:F5:DA:60") {
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// return
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// }
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// fmt.Println("NAME:", a.LocalName, "T:", time.Now(), "MAC:", p.ID(), "RSSI:", rssi, "LEN:", len(a.ManufacturerData))
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tags := make(map[string]string)
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tags["mac"] = p.ID()
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fields := make(map[string]interface{})
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fields["name"] = a.LocalName
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fields["rssi"] = rssi
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fields["pl"] = strconv.Itoa(len(a.ManufacturerData)) //包长度
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fields["power"] = a.TxPowerLevel
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point, err := client.NewPoint(
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"band",
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tags,
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fields,
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time.Now(),
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)
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if err != nil {
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log.Fatalln(err.Error())
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}
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chn <- point
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}
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func onStateChanged(device gatt.Device, s gatt.State) {
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func onStateChanged(d gatt.Device, s gatt.State) {
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fmt.Println("State:", s)
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switch s {
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case gatt.StatePoweredOn:
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device.Scan([]gatt.UUID{}, true)
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fmt.Println("Scanning...")
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d.Scan([]gatt.UUID{}, false)
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return
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default:
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device.StopScanning()
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d.StopScanning()
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}
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}
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func onPeriphDiscovered(p gatt.Peripheral, a *gatt.Advertisement, rssi int) {
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id := strings.ToUpper(flag.Args()[0])
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if strings.ToUpper(p.ID()) != id {
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return
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}
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// Stop scanning once we've got the peripheral we're looking for.
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p.Device().StopScanning()
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fmt.Printf("\nPeripheral ID:%s, NAME:(%s)\n", p.ID(), p.Name())
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fmt.Println(" Local Name =", a.LocalName)
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fmt.Println(" TX Power Level =", a.TxPowerLevel)
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fmt.Println(" Manufacturer Data =", a.ManufacturerData)
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fmt.Println(" Service Data =", a.ServiceData)
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fmt.Println("")
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p.Device().Connect(p)
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}
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func onPeriphConnected(p gatt.Peripheral, err error) {
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fmt.Println("Connected")
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defer p.Device().CancelConnection(p)
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if err := p.SetMTU(500); err != nil {
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fmt.Printf("Failed to set MTU, err: %s\n", err)
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}
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// Discovery services
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ss, err := p.DiscoverServices(nil)
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if err != nil {
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fmt.Printf("Failed to discover services, err: %s\n", err)
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return
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}
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for _, s := range ss {
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msg := "Service: " + s.UUID().String()
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if len(s.Name()) > 0 {
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msg += " (" + s.Name() + ")"
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}
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fmt.Println(msg)
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// Discovery characteristics
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cs, err := p.DiscoverCharacteristics(nil, s)
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if err != nil {
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fmt.Printf("Failed to discover characteristics, err: %s\n", err)
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continue
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}
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for _, c := range cs {
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msg := " Characteristic " + c.UUID().String()
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if len(c.Name()) > 0 {
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msg += " (" + c.Name() + ")"
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}
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msg += "\n properties " + c.Properties().String()
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fmt.Println(msg)
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// Read the characteristic, if possible.
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if (c.Properties() & gatt.CharRead) != 0 {
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b, err := p.ReadCharacteristic(c)
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if err != nil {
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fmt.Printf("Failed to read characteristic, err: %s\n", err)
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continue
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}
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fmt.Printf(" value %x | %q\n", b, b)
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}
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// Discovery descriptors
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ds, err := p.DiscoverDescriptors(nil, c)
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if err != nil {
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fmt.Printf("Failed to discover descriptors, err: %s\n", err)
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continue
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}
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for _, d := range ds {
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msg := " Descriptor " + d.UUID().String()
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if len(d.Name()) > 0 {
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msg += " (" + d.Name() + ")"
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}
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fmt.Println(msg)
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// Read descriptor (could fail, if it's not readable)
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b, err := p.ReadDescriptor(d)
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if err != nil {
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fmt.Printf("Failed to read descriptor, err: %s\n", err)
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continue
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}
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fmt.Printf(" value %x | %q\n", b, b)
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}
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// Subscribe the characteristic, if possible.
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if (c.Properties() & (gatt.CharNotify | gatt.CharIndicate)) != 0 {
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f := func(c *gatt.Characteristic, b []byte, err error) {
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fmt.Printf("notified: % X | %q\n", b, b)
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}
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if err := p.SetNotifyValue(c, f); err != nil {
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fmt.Printf("Failed to subscribe characteristic, err: %s\n", err)
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continue
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}
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}
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}
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fmt.Println()
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}
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fmt.Printf("Waiting for 5 seconds to get some notifiations, if any.\n")
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time.Sleep(5 * time.Second)
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}
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func onPeriphDisconnected(p gatt.Peripheral, err error) {
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fmt.Println("Disconnected")
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close(done)
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}
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func main() {
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influx.Init(&influx.Config{
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Address: "http://127.0.0.1:8086",
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DBName: "wristband",
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Username: "abc",
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Password: "abc",
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Timeout: 3,
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})
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// if err := influx.CreateDB("wristband", 10); err != nil {
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// log.Fatalln("influx.CreateDB", err.Error())
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// }
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go func() {
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db, err := influx.New()
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if err != nil {
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log.Fatalln(err.Error())
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}
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for {
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bp, err := client.NewBatchPoints(client.BatchPointsConfig{
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Database: "wristband",
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Precision: "ms",
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})
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if err != nil {
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log.Fatalln(err.Error())
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}
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for i := 1; i < 50; i++ {
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if d, ok := <-chn; ok {
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bp.AddPoint(d)
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}
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}
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if err := db.Write(bp); err != nil {
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log.Println("db.Write: ", err.Error())
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}
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}
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}()
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dev, err := gatt.NewDevice(option.DefaultClientOptions...)
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if err != nil {
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log.Fatalf("Failed to open device, err:%s\n", err)
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flag.Parse()
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if len(flag.Args()) != 1 {
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log.Fatalf("usage: %s [options] peripheral-id\n", os.Args[0])
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}
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dev.Handle(
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gatt.PeripheralDiscovered(onPerhipheralDiscovered),
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gatt.CentralConnected(func(c gatt.Central) { fmt.Println("Connect: ", c.ID()) }),
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gatt.CentralDisconnected(func(c gatt.Central) { fmt.Println("Disconnect: ", c.ID()) }),
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d, err := gatt.NewDevice(option.DefaultClientOptions...)
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if err != nil {
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log.Fatalf("Failed to open device, err: %s\n", err)
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return
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}
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// Register handlers.
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d.Handle(
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gatt.PeripheralDiscovered(onPeriphDiscovered),
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gatt.PeripheralConnected(onPeriphConnected),
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gatt.PeripheralDisconnected(onPeriphDisconnected),
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)
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dev.Init(onStateChanged)
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select {}
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d.Init(onStateChanged)
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<-done
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fmt.Println("Done")
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}
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