# 在BoardConfig.mk中指定模组型号
RK_WIFIBT_CHIP="RTL8723DS"  # 或 AP6255 / CYW43438 等

/* 电源控制：由MMC框架统一管理，开机前先拉低复位WiFi模组 */
sdio_pwrseq: sdio-pwrseq {
    compatible = "mmc-pwrseq-simple";
    pinctrl-0 = <&wifi_enable_h>;
    reset-gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_LOW>;  /* WiFi模组复位脚，低有效 */
};

/* SDIO控制器 */
&sdio {
    max-frequency = <150000000>;  /* SDIO3.0最大150MHz，降频可解决信号完整性问题 */
    bus-width = <4>;
    cap-sdio-irq;                 /* 启用SDIO中断，支持休眠唤醒 */
    keep-power-in-suspend;        /* 休眠时保持电源 */
    mmc-pwrseq = <&sdio_pwrseq>;
    status = "okay";
};

/* WiFi节点 */
wireless-wlan {
    compatible = "wlan-platdata";
    wifi_chip_type = "rtl8723ds";  /* 必须与SDK配置一致 */
    WIFI,host_wake_irq = <&gpio0 RK_PA0 GPIO_ACTIVE_HIGH>;  /* WiFi唤醒CPU的中断脚 */
    status = "okay";
};

/* 蓝牙节点（UART） */
wireless-bluetooth {
    compatible = "bluetooth-platdata";
    BT,power_gpio = <&gpio4 RK_PB3 GPIO_ACTIVE_HIGH>;  /* BT电源使能脚 */
    uart_rts_gpios = <&gpio4 RK_PA7 GPIO_ACTIVE_LOW>;  /* 蓝牙UART流控（可省但建议接） */
    status = "okay";
};

/* UART配置 */
&uart4 {
    pinctrl-0 = <&uart4_xfer &uart4_ctsn>;
    status = "okay";
};

# ===== 必选配置 =====
CONFIG_RFKILL=y              # 无线电源管理框架
CONFIG_RFKILL_RK=y           # RK平台rfkill扩展
CONFIG_MMC=y                 # MMC/SDIO控制器框架
CONFIG_MMC_DW=y             # DesignWare SD/MMC控制器
CONFIG_MMC_DW_ROCKCHIP=y   # RK平台DW控制器特定支持
CONFIG_WIRELESS=y           # 通用无线支持
CONFIG_CFG80211=y            # 无线配置接口
CONFIG_MAC80211=y            # 802.11协议栈
CONFIG_BT=y                  # 蓝牙支持
CONFIG_BT_HCIUART=y         # 蓝牙UART传输层

# ===== 模组专属驱动（按需选一）=====
CONFIG_RTL8723DS=m           # Realtek RTL8723DS
CONFIG_RTL8822CS=m           # Realtek RTL8822CS
CONFIG_BCMDHD=m              # 正基AP模组
CONFIG_CYWDHD=m              # 英飞凌/Cypress模组

# ===== 休眠唤醒（WiFi省电相关）=====
CONFIG_PM=y                   # 电源管理框架
CONFIG_PM_GENERIC_DOMAINS=y  # Generic PM domains
# CONFIG_CFG80211_WOWLAN=y   # WoWLAN支持（连接断开时唤醒，参考下期预告）

# 固件目录结构（Android RK系统，烧录后在板子上查看）
/
├── /system/vendor/lib/modules/     # WiFi驱动ko（Android）
│   ├── bcmdhd.ko                  # 正基模组
│   └── rtl8723ds.ko              # Realtek模组
│
├── /system/vendor/etc/firmware/   # WiFi固件+NVRAM（Android）
│   ├── fw_bcm43455c0_ag.bin      # 正基WiFi固件
│   └── nvram_ap6255.txt          # NVRAM配置（功率/天线参数）
│
├── /lib/firmware/rtlbt/           # 蓝牙固件（Realtek，Linux/Android通用）
│   ├── rtl8723d_fw               # 蓝牙固件
│   └── rtl8723d_config           # 蓝牙配置
│
├── /lib/firmware/rtlbt/           # 蓝牙固件（Realtek USB方案）
│   ├── rtl8821cu_fw
│   └── rtl8821cu_config
│
└── /lib/firmware/brcm/            # 蓝牙固件（正基/英飞凌，.hcd格式）
    └── BCM4345C0.hcd              # Broadcom蓝牙固件

# ===== 第一步：加载驱动 =====
insmod /system/vendor/lib/modules/bcmdhd.ko
# 或
insmod /system/vendor/lib/modules/rtl8723ds.ko

# ===== 第二步：启动WiFi =====
ifconfig wlan0 up

# ===== 第三步：连接热点 =====
wpa_supplicant -B -i wlan0 -c /data/cfg/wpa_supplicant.conf
wpa_cli -i wlan0 scan
wpa_cli -i wlan0 scan_results
wpa_cli -i wlan0 reconnect

# ===== 第四步：获取IP =====
udhcpc -i wlan0
# 或
dhcpcd wlan0

cat > /data/cfg/wpa_supplicant.conf << 'EOF'
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
ap_scan=1
update_config=1

network={
    ssid="YourSSID"
    psk="YourPassword"
    key_mgmt=WPA-PSK
}
EOF

# ===== 隐藏SSID连接 =====
network={
    ssid="MyHiddenNetwork"
    scan_ssid=1
    psk="password"
    key_mgmt=WPA-PSK
}

# ===== 多个WiFi优先级（按顺序匹配）=====
network={
    ssid="Office"
    psk="office123"
    key_mgmt=WPA-PSK
    priority=2      # 优先级高，优先连接
}
network={
    ssid="Home"
    psk="home123"
    key_mgmt=WPA-PSK
    priority=1
}

# ===== 静态IP配置 =====
network={
    ssid="StaticIP"
    psk="password"
    key_mgmt=WPA-PSK
    ip_address=192.168.1.100
    gateway=192.168.1.1
    dns=8.8.8.8
}

# ===== Realtek UART蓝牙 =====
echo 0 > /sys/class/rfkill/rfkill0/state
sleep 1
echo 1 > /sys/class/rfkill/rfkill0/state
hciattach -n -s 115200 /dev/ttyS4 rtk_h5 &

# ===== 正基/英飞凌蓝牙 =====
echo 0 > /sys/class/rfkill/rfkill0/state
sleep 1
echo 1 > /sys/class/rfkill/rfkill0/state
brcm_patchram_plus1 --enable_hci --baudrate 1500000 \
    --patchram /system/vendor/etc/firmware/BCM4345C0.hcd /dev/ttyS4 &

# ===== 验证 =====
hciconfig hci0 up
hciconfig -a
hcitool scan

# ===== rfkill说明 =====
# rfkill是无线设备的通用电源管理
# echo 0/1 是软开关（软件层面阻止无线）
# ⚠️ 优先级低于硬件REG_ON引脚：硬件关了，软件开不了
rfkill list
rfkill block wifi
rfkill unblock wifi

# ===== hostapd配置 =====
cat > /data/cfg/hostapd.conf << 'EOF'
interface=wlan0
driver=nl80211
ssid=MyAP
hw_mode=g
channel=6
wpa=2
wpa_passphrase=12345678
wpa_key_mgmt=WPA-PSK
rsn_pairwise=CCMP
auth_algs=1
macaddr_acl=0
wmm_enabled=1
EOF

# ===== 启动热点 =====
# 先给wlan0配静态IP
ifconfig wlan0 192.168.10.1 up
# 启动hostapd
hostapd /data/cfg/hostapd.conf -B
# 启动DHCP服务（可选）
dnsmasq -i wlan0 --dhcp-range=192.168.10.100,192.168.10.200,12h

# ===== iperf吞吐率测试 =====
# 板子作为Server
iperf -s -i 1

# PC作为Server，测试下行
iperf -c 192.168.x.x -i 1 -w 2M -t 120

# UDP测试
iperf -c 192.168.x.x -u -i 1 -b 100M -t 120

# ===== 进入测试模式 =====
# 正基/英飞凌模组
wl ver  # 显示WL_TEST表示进入测试模式
wl txchain 1
wl rxchain 1
wl channels  # 查看可用信道

# Realtek模组
rtlpriv wlan0 set_band 0      # 2.4G
rtlpriv wlan0 set_band 1      # 5G
rtlpriv wlan0 mp_txpower 50   # 设置功率
rtlpriv wlan0 mp_channel 6    # 设置信道

# ===== 看识别log =====
dmesg | grep -E "mmc|wl|sdio|wlan"

# ===== 看固件加载log =====
dmesg | grep -E "firmware|download"

# ===== 看蓝牙log =====
dmesg | grep -E "hci|bt|uart"

# ===== 看中断情况 =====
cat /proc/interrupts | grep -E "mmc|wl|sdio"

# ===== 测GPIO电平 =====
cat /sys/class/gpio/gpioN/value

# ===== 关闭WiFi（重置前常用）=====
ifconfig wlan0 down

# ===== 终止wpa_supplicant（重新配置前）=====
killall wpa_supplicant

# ===== 查看蓝牙适配器状态 =====
hciconfig -a
hciconfig hci0 status

# ===== 查看rfkill状态 =====
rfkill list

# ===== SDIO降频（解决初始化失败） =====
&sdio {
    max-frequency = <10000000>;  # 从150M降到10M测试
};

# ===== CPU定频（排除性能问题） =====
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

# ===== DDR定频 =====
echo userspace > /sys/devices/platform/dmc/devfreq/dmc/governor
echo 1560000000 > /sys/devices/platform/dmc/devfreq/dmc/min_freq