需要建立软链

ln -s /usr/lib/kernel-overlays/base/lib/firmware/rtl_bt/rtl8761b_fw.bin /lib/firmware/rtlbt/rtl8761b_fw
ln -s /usr/lib/kernel-overlays/base/lib/firmware/rtl_bt/rtl8761b_config.bin /lib/firmware/rtlbt/rtl8761b_config

再运行就正常了

EMUELEC:~ # rtk_hciattach -n -s 115200 ttyS1 rtk_h5 &
[1] 7426
EMUELEC:~ # Realtek Bluetooth :Realtek Bluetooth init uart with init speed:115200, type:HCI UART H5
Realtek Bluetooth :Realtek hciattach version 3.1.dced3af.20210423-153942

Realtek Bluetooth :Use epoll
Realtek Bluetooth WARN: OP_H5_SYNC Transmission timeout
Realtek Bluetooth :[SYNC] Get SYNC Resp Pkt
Realtek Bluetooth :[CONFIG] Get SYNC pkt
Realtek Bluetooth :[CONFIG] Get SYNC pkt
Realtek Bluetooth :[CONFIG] Get CONFG pkt
Realtek Bluetooth ERROR: receive packets in active state
...
Realtek Bluetooth :Load FW /lib/firmware/rtlbt/rtl8761b_fw OK, size 37740
Realtek Bluetooth :rtb_get_fw_project_id: opcode 0, len 1, data 14
Realtek Bluetooth :FW version 0x0d9a2883, Patch num 2
Realtek Bluetooth :Chip id 0x0001
Realtek Bluetooth :Chip id 0x0002
Realtek Bluetooth :Patch length 0x5ba4
Realtek Bluetooth :Start offset 0x00003780
Realtek Bluetooth :Svn version:    24105
Realtek Bluetooth :Coexistence: BTCOEX_20190327-0202

Realtek Bluetooth :FW  exists, Config file  exists
Realtek Bluetooth :Total len 23485 for fwc
Realtek Bluetooth :baudrate in change speed command: 0x02 0x80 0x92 0x04
Realtek Bluetooth :Receive cmd complete event of command: fc17
Realtek Bluetooth :Received cc of vendor change baud
Realtek Bluetooth :Final speed 1500000
Realtek Bluetooth :end_idx: 93, lp_len: 49, additional pkts: 5

Realtek Bluetooth :Start downloading...
Realtek Bluetooth :Send additional packet 94
Realtek Bluetooth :Send additional packet 95
Realtek Bluetooth :Send additional packet 96
Realtek Bluetooth :Send additional packet 97
Realtek Bluetooth :Last packet 226
Realtek Bluetooth :Send last pkt
Realtek Bluetooth :Enable host hw flow control
Realtek Bluetooth :h5_hci_reset: Issue hci reset cmd
Realtek Bluetooth :Receive cmd complete event of command: 0c03
Realtek Bluetooth :Received cc of hci reset cmd
Realtek Bluetooth :Init Process finished
Realtek Bluetooth :Realtek Bluetooth post process
Realtek Bluetooth :Device setup complete

在系统中存在一个 rtkbt-firmware-aml.service 服务, 文件位于 /usr/lib/systemd/system/rtkbt-firmware-aml.service 内容如下

[Unit]
Description=Attach /dev/ttyS1 to BlueZ stack using rtk_h5 type
Wants=bluetooth.service
Before=bluetooth.service
After=dev-ttyS1.device

[Service]
Type=simple
ExecStartPre=/usr/sbin/rfkill unblock bluetooth
ExecStart=/usr/bin/rtk_hciattach -n -s 115200 /dev/ttyS1 rtk_h5
ExecStopPost=/usr/sbin/rfkill block bluetooth

所以添加完软链后, 也可以通过systemctl start rtkbt-firmware-aml启动蓝牙

启动蓝牙后, 在ES上通过菜单搜索依然无法找到蓝牙设备, 需要运行一个游戏, 进入RA界面, 在Settings里通过Bluetooth设置

• RTL8761 Bluetooth Support https://github.com/EmuELEC/EmuELEC/issues/698
• 蓝牙启用方法参考 https://tieba.baidu.com/p/8063516479
• 蓝牙启用方法参考 https://www.right.com.cn/forum/thread-8295899-1-1.html

UWE5621DS

311-1AS盒子内置双频WIFI+蓝牙, 芯片为 UWE5621DS, 开启方式