dd if=/dev/mmcblk2 | gzip > Android_am40_mmcblk2.img.gz

gzip -dc Android_am40_mmcblk2.img.gz | dd of=/dev/mmcblk2

dd if=Armbian_23.02.2_am40_jammy_current_6.1.11.img of=/dev/mmcblk2 bs=1M

armbian-install # 选择 Boot from emmc - System on eMMC，安装完成后，选择 install/update bootloader on sd/emmc

dd if=/dev/zero of=/dev/mmcblk2 bs=1M count=300

reboot bootloader

# sdX 为 sdcard 对应的块设备文件
sudo dd if=system.img of=/dev/sdX bs=4M oflag=sync status=progress

# 解决串口权限问题
sudo usermod -a -G dialout $USER
# 重新登录后生效
reboot

# 安装串口通信软件
sudo apt install -y python3-serial

# 打开串口
miniterm /dev/ttyUSB0 1500000

# 退出 miniterm 快捷键为 Ctrl + ]

# 使用 netplan 配置以太网络
sudo nano /etc/netplan/01-netcfg.yaml

# 配置为动态获取 IP
network:
  version: 2
  renderer: networkd
  ethernets:
    eth0:
      dhcp4: yes

# 或静态 IP
network:
  version: 2
  renderer: networkd
  ethernets:
    eth0:
     dhcp4: no
     addresses: [10.0.0.10/24]
     gateway4: 10.0.0.1
     nameservers:
       addresses: [223.5.5.5,223.6.6.6]

# 应用配置
sudo netplan --debug apply

# WiFi 配置
nmcli dev wifi connect "hotspot-name" password "password"

# 或使用 nmtui 命令图形化修改

sudo apt install -y hostapd isc-dhcp-server

# 配置 hostapd
sudo nano /etc/hostapd/hostapd.conf
interface=wlan0
driver=nl80211
ssid=hostspot-name
macaddr_acl=0
auth_algs=1
#auth_algs=3
ignore_broadcast_ssid=0
hw_mode=g
channel=6
wpa=2
wpa_passphrase=password
wpa_key_mgmt=WPA-PSK
wpa_pairwise=CCMP
#wpa_pairwise=TKIP
#rsn_pairwise=CCMP

# 修改 hostapd 默认配置文件路径
sudo nano /etc/default/hostapd
DAEMON_CONF=/etc/hostapd/hostapd.conf

# 重启 hostapd
sudo service hostapd restart
sudo service hostapd status

# dhcp 配置
sudo nano /etc/dhcp/dhcp.conf
#option domain-name "example.org";
#option domain-name-servers ns1.example.org, ns2.example.org;
authoritative;
subnet 10.0.0.0 netmask 255.255.255.0 {
    range 10.0.0.10 10.0.0.200;
    option broadcast-address 10.0.0.255;
    option routers 10.0.0.1;
    default-lease-time 600;
    max-lease-time 7200;
    option domain-name "local";
    option domain-name-servers 223.5.5.5, 8.8.4.4;
}

# 设置 dhcp 网口
# 不进行操作会出现错误：Not configured to listen on any interfaces!
sudo nano /etc/default/isc-dhcp-server
INTERFACESv4="wlan0"
INTERFACESv6="wlan0"

# 设置 wlan0 地址
# 不进行操作会出现错误：Not configured to listen on any interfaces!
sudo ip addr add 10.0.0.1/24 dev wlan0

# 开启转发
sudo sysctl -w net.ipv4.ip_forward=1
sudo iptables -t nat -A POSTROUTING -s 10.0.0.1/24 -o eth0 -j MASQUERADE

# 启动 dhcp 服务
sudo service isc-dhcp-server restart
sudo service isc-dhcp-server status

# 此方按创建的 2.4G 热点会出现部分旧设备连接不上
sudo apt install -y dnsmasq
#nmcli dev wifi hotspot ifname wlan0 ssid "hotspot-name" password "password"
nmcli connection add type wifi ifname wlan0 con-name "Hostspot" autoconnect no ssid "hotspot-name"
nmcli connection modify "Hostspot" 802-11-wireless.mode ap 802-11-wireless.band bg ipv4.method shared
nmcli connection modify "Hostspot" wifi-sec.key-mgmt wpa-psk
nmcli connection modify "Hostspot" wifi-sec.psk "password"
nmcli connection up "Hostspot"

# 或使用 nmtui 命令图形化修改

sudo cp -a /etc/apt/sources.list /etc/apt/sources.list.bak
sudo sed -i "s@http://ports.ubuntu.com@http://mirrors.huaweicloud.com@g" /etc/apt/sources.list

# 安装英文与简体中文语言包
sudo apt install -y language-pack-en language-pack-zh-hans
# 设置本地化
sudo dpkg-reconfigure locales

# 配置时区
sudo apt install -y tzdata
sudo dpkg-reconfigure tzdata
# 同步硬件时间
sudo hwclock -s

sudo apt install -y parted
sudo parted /dev/mmcblk2
unit s
print
resizepart 5 100%
print
Q

sudo resize2fs /dev/mmcblk2p5

sudo apt install gnupg2 -y

# 添加 apt 公钥
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo apt-key add -

# 添加软件源
echo "deb [arch=arm64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list

# 安装 docker
sudo apt update && sudo apt install docker-ce -y

# 非 root 用户免 sudo 操作 docker
sudo usermod -aG docker $USER

mmc dev 0
mmc erase 0 2000
reset

dd if=/dev/zero of=/dev/mmcblk2 bs=1M count=300

# 网卡未启用
ip addr show eth0
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 16:a6:4c:50:54:44 brd ff:ff:ff:ff:ff:ff

# 网卡未被 network-manager
nmcli device
DEVICE  TYPE      STATE      CONNECTION
eth0    ethernet  unmanaged  --
lo      loopback  unmanaged  --

# 使用该命令启用网卡无效
nmcli dev set eth0 managed yes

# 覆盖默认配置
sudo touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf

# 设备树
cat /sys/firmware/fdt > raw.dtb

# 内核编译选项
zcat /proc/config.gz > kernel.config

sudo apt install -y bluez bluez-tools pulseaudio pulseaudio-module-bluetooth

# 查看蓝牙信息
hciconfig

# 使用 bluetoothctl 命令操作蓝牙
# 上电
power on
# 扫描
scan on
# 配对
pair MAC
# 信任
trust MAC
# 连接
connect MAC

# 如果连接时出现 Failed to connect: org.bluez.Error.Failed 可以通过重启 pulseaudio 解决
pulseaudio -k
pulseaudio --start

# 声道测试
speaker-test -c2 -twav

# 查看 PulseAudio 信息
pactl info

# 查看音频输出通道
pactl list sinks

# 设置为默认音频输出通道，通过 TAB 补全后面的名称
pactl set-default-sink bluez_sink.MAC.a2dp_sink