raspberry pi 3 でstretch その6

#概要
raspberry pi 3 でstretchやってみた。
Bluetoothやってみた。

#環境
Raspberry Pi 3 model B v1.2 element14
2017-09-07-raspbian-stretch
Nexus 7

#スキャン

hcitool scan

#Androidとペアリング

sudo bluetoothctl

pair アドレス

#設定

sudo nano /etc/systemd/system/dbus-org.bluez.service

```
ExecStart=/usr/lib/bluetooth/bluetoothd --compat
ExecStartPost=/usr/bin/sdptool add SP
```

#確認
sudo sdptool browse local

```
Browsing FF:FF:FF:00:00:00 ...
Service RecHandle: 0x10000
Service Class ID List:
  "PnP Information" (0x1200)
Profile Descriptor List:
  "PnP Information" (0x1200)
    Version: 0x0103

Browsing FF:FF:FF:00:00:00 ...
Service Search failed: Invalid argument
Service Name: Serial Port
Service Description: COM Port
Service Provider: BlueZ
Service RecHandle: 0x10001
Service Class ID List:
  "Serial Port" (0x1101)
Protocol Descriptor List:
  "L2CAP" (0x0100)
  "RFCOMM" (0x0003)
    Channel: 1
Language Base Attr List:
  code_ISO639: 0x656e
  encoding:    0x6a
  base_offset: 0x100
Profile Descriptor List:
  "Serial Port" (0x1101)
    Version: 0x0100

Service Name: Generic Access Profile
Service Provider: BlueZ
Service RecHandle: 0x10002
Service Class ID List:
  "Generic Access" (0x1800)
Protocol Descriptor List:
  "L2CAP" (0x0100)
    PSM: 31
  "ATT" (0x0007)
    uint16: 0x0001
    uint16: 0x0005

Service Name: Generic Attribute Profile
Service Provider: BlueZ
Service RecHandle: 0x10003
Service Class ID List:
  "Generic Attribute" (0x1801)
Protocol Descriptor List:
  "L2CAP" (0x0100)
    PSM: 31
  "ATT" (0x0007)
    uint16: 0x0006
    uint16: 0x0009

Service Name: AVRCP CT
Service RecHandle: 0x10004
Service Class ID List:
  "AV Remote" (0x110e)
  "AV Remote Controller" (0x110f)
Protocol Descriptor List:
  "L2CAP" (0x0100)
    PSM: 23
  "AVCTP" (0x0017)
    uint16: 0x0103
Profile Descriptor List:
  "AV Remote" (0x110e)
    Version: 0x0106

Service Name: AVRCP TG
Service RecHandle: 0x10005
Service Class ID List:
  "AV Remote Target" (0x110c)
Protocol Descriptor List:
  "L2CAP" (0x0100)
    PSM: 23
  "AVCTP" (0x0017)
    uint16: 0x0103
Profile Descriptor List:
  "AV Remote" (0x110e)
    Version: 0x0105

Service Name: Audio Source
Service RecHandle: 0x10006
Service Class ID List:
  "Audio Source" (0x110a)
Protocol Descriptor List:
  "L2CAP" (0x0100)
    PSM: 25
  "AVDTP" (0x0019)
    uint16: 0x0103
Profile Descriptor List:
  "Advanced Audio" (0x110d)
    Version: 0x0103

Service Name: Audio Sink
Service RecHandle: 0x10007
Service Class ID List:
  "Audio Sink" (0x110b)
Protocol Descriptor List:
  "L2CAP" (0x0100)
    PSM: 25
  "AVDTP" (0x0019)
    uint16: 0x0103
Profile Descriptor List:
  "Advanced Audio" (0x110d)
    Version: 0x0103

Service Name: :1.7/Profile/HSPHeadset/00001108-0000-1000-8000-00805F9B34FB
Service RecHandle: 0x10008
Service Class ID List:
  UUID 128: 00001108-0000-1000-8000-00805f9b34fb
Protocol Descriptor List:
  "L2CAP" (0x0100)

Service Name: Headset Voice gateway
Service RecHandle: 0x10009
Service Class ID List:
  "Headset Audio Gateway" (0x1112)
  "Generic Audio" (0x1203)
Protocol Descriptor List:
  "L2CAP" (0x0100)
  "RFCOMM" (0x0003)
    Channel: 12
Profile Descriptor List:
  "Headset" (0x1108)
    Version: 0x0102

Service Name: Hands-Free unit
Service RecHandle: 0x1000a
Service Class ID List:
  "Handsfree" (0x111e)
  "Generic Audio" (0x1203)
Protocol Descriptor List:
  "L2CAP" (0x0100)
  "RFCOMM" (0x0003)
    Channel: 7
Profile Descriptor List:
  "Handsfree" (0x111e)
    Version: 0x0107

Service Name: Hands-Free Voice gateway
Service RecHandle: 0x1000b
Service Class ID List:
  "Handsfree Audio Gateway" (0x111f)
  "Generic Audio" (0x1203)
Protocol Descriptor List:
  "L2CAP" (0x0100)
  "RFCOMM" (0x0003)
    Channel: 13
Profile Descriptor List:
  "Handsfree" (0x111e)
    Version: 0x0107


```

#インストール

sudo aptitude install python-bluez

#pythonでrfcommサーバー

```
import bluetooth

server_sock = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
port = 1
server_sock.bind(("", port))
server_sock.listen(1)
client_sock, address = server_sock.accept()
print "Accepted connection from ", address
data = client_sock.recv(1024)
print "received [%s]" % data
client_sock.close()
server_sock.close()
```


以上。