下面是在一个 8Bitdo NES30 Pro 手柄上测试的其他蓝牙手柄应该也可以.

8Bitdo 蓝牙手柄不会自动配对. 因此必须利用ssh进行命令控制进行配对。 

打开蓝牙

再Services里面找到蓝牙选项，并打开。

下面要用ssh进行控制

打开终端（mac，linux；windows请度娘）

sudo ssh root@树莓派ip地址

如果秘钥出问题

sudo rm -rf /var/root/.ssh/known_hosts

然后再连接

检查蓝牙服务状态

systemctl status bluetooth

应该能够看到下面的信息

Mar 08 02:28:49 Lakka systemd[1]: Started Bluetooth service.

Mar 08 02:28:49 Lakka bluetoothd[522]: Bluetooth daemon 5.43

Mar 08 02:28:49 Lakka bluetoothd[522]: Starting SDP server

Mar 08 02:28:49 Lakka bluetoothd[522]: kernel lacks bnep-protocol support

Mar 08 02:28:49 Lakka bluetoothd[522]: System does not support network plugin

Mar 08 02:28:49 Lakka bluetoothd[522]: Bluetooth management interface 1.14 initialized

Mar 08 02:28:49 Lakka bluetoothd[522]: Failed to obtain handles for "Service Changed" characteristic

Mar 08 02:28:49 Lakka bluetoothd[522]: Failed to set privacy: Rejected (0x0b)

Mar 08 02:32:54 Lakka bluetoothd[522]: No agent available for request type 0

Mar 08 02:32:54 Lakka bluetoothd[522]: device_request_pin: Operation not permitted

如果出现下面信息：

● bluetooth.service - Bluetooth service

  Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)

  Active: inactive (dead)

Condition: start condition failed at Tue 2015-04-07 19:35:48 UTC; 1min 59s ago

          ConditionPathExists=/storage/.cache/services/bluez.conf was not met

尝试手动开启蓝牙服务

systemctl enable bluetooth

systemctl start bluetooth

再检查蓝牙状态重复上面的步骤

如果蓝牙还是报错，请创建配置文件并重启蓝牙服务

touch /storage/.cache/services/bluez.conf

systemctl start bluetooth

配对蓝牙

运行蓝牙控制模块

bluetoothctl

一个蓝牙提示符[bluetooth]#将会出现，输入下面的命令

agent on

default-agent

power on

discoverable on

pairable on

scan on

打开你的8Bitdo 控制器模式1. 将会显示下面的信息

Discovery started

[CHG] Controller B8:27:EB:48:30:22 Discovering: yes

[NEW] Device E4:17:D8:3E:6A:7D 8Bitdo NES30 Pro

连接手柄，输入下面的命令

connect <device_addr>

将会显示下面的信息

[bluetooth]# connect E4:17:D8:3E:6A:7D

Attempting to connect to E4:17:D8:3E:6A:7D

[CHG] Device E4:17:D8:3E:6A:7D Connected: yes

[CHG] Device E4:17:D8:3E:6A:7D Modalias: usb:v3820p0009d0100

[CHG] Device E4:17:D8:3E:6A:7D UUIDs: 00001124-0000-1000-8000-00805f9b34fb

[CHG] Device E4:17:D8:3E:6A:7D UUIDs: 00001200-0000-1000-8000-00805f9b34fb

[CHG] Device E4:17:D8:3E:6A:7D Paired: yes

Connection successful

信任设备

trust <device_addr>

完工。

测试再重启开机后手柄会自动连接。如果失去连接请重启手柄和树莓派。再不行就重新连接。

connect <device_addr>