PX30 AP6212 WIFI-BT模块使用说明

作者: Mr_Michael | 来源:发表于2021-04-14 16:22 被阅读0次

PX30 AP6212 WIFI-BT模块使用说明
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一、AP6212模块简介

datasheet

特性

802.11b/g/n single-band radio
Bluetooth V4.0(HS)with integrated Class 1.5PAandLow Energy (BLE) support
Concurrent Bluetooth, FM (RX) RDS/RBDS, and WLAN operation
Simultaneous BT/WLAN receive with single antenna
WLAN host interface options:-SDIO v2.0—up to 50 MHz clock rate
BT host digital interface:-UART (up to 4 Mbps)
FM multiple audio routing options: I2S, PCM, eSCO, A2DP
IEEECo-existencetechnologies are integrated die solution
ECI —enhanced coexistence support, ability to coordinate BT SCO transmissions around WLAN receivesA simplified block diagram of the module is depicted in the figure below.

硬件框图

2021-04-14 15-39-39 的屏幕截图.png

二、内核修改

1.修改设备树

/ {
    ...
    wireless-bluetooth {
        compatible = "bluetooth-platdata";
        uart_rts_gpios = <&gpio1 RK_PC3 GPIO_ACTIVE_LOW>;
        pinctrl-names = "default","rts_gpio";
        pinctrl-0 = <&uart1_rts>;
        pinctrl-1 = <&uart1_rts_gpio>;
        // BT,reset_gpio    = <&gpio2 RK_PB0 GPIO_ACTIVE_HIGH>;
        // BT,wake_gpio     = <&gpio0 RK_PA1 GPIO_ACTIVE_HIGH>;
        BT,power_gpio     = <&gpio2 RK_PB0 GPIO_ACTIVE_HIGH>;   // BT_REG_ON
        BT,wake_host_irq = <&gpio0 RK_PB3 GPIO_ACTIVE_HIGH>; // BT_WAKE_HOST
        status = "okay";
    };

    wireless-wlan {
        compatible = "wlan-platdata";
        rockchip,grf = <&grf>;
        wifi_chip_type = "ap6212";  
        sdio_vref = <1800>;
        WIFI,host_wake_irq = <&gpio0 RK_PB2 GPIO_ACTIVE_HIGH>;  // WIFI_WAKE_HOST
        status = "okay";
    };

    sdio_pwrseq: sdio-pwrseq {
        compatible = "mmc-pwrseq-simple";
        clocks = <&rk809 1>;    // 根据实际电路决定
        clock-names = "ext_clock";
        pinctrl-names = "default";
        pinctrl-0 = <&wifi_enable_h>;

        /*
         * On the module itself this is one of these (depending
         * on the actual card populated):
         * - SDIO_RESET_L_WL_REG_ON
         * - PDN (power down when low)
         */
        reset-gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_LOW>;  //WIFI_REG_ON
    };
    ...
};

&sdio {
    status = "okay";
    clock-frequency = <50000000>;
    clock-freq-min-max = <200000 50000000>;
    bus-width = <4>;
    cap-sd-highspeed;
    cap-sdio-irq;
    disable-wp;
    keep-power-in-suspend;
    mmc-pwrseq = <&sdio_pwrseq>;
    non-removable;
    num-slots = <1>;
    pinctrl-names = "default";
    sd-uhs-sdr104;
    supports-sdio;
};

&pinctrl {
    pinctrl-names = "default";
    pinctrl-0 = <&chip_enable_h &wifi_wake_host >;
    
    sdio-pwrseq {
        wifi_enable_h: wifi-enable-h {
            rockchip,pins = <0 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>;    //WIFI_REG_ON
        };
        chip_enable_h: chip-enable-h {
            rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_output_high>;
        };
    };

    wireless-wlan {
        wifi_wake_host: wifi-wake-host {
        /* 注意一般Wi-Fi的wake up pin都是高电平触发,所以默认这里要配置为下拉*/
        rockchip,pins = <0 RK_PB2 0 &pcfg_pull_down>;
        };
    };

};

2.修改内核配置

WL_ROCKCHIP=y

2021-04-14 15-55-15 的屏幕截图.png

三、安装驱动并运行

wifi-bt驱动位置为sdk/external/rkwifibt/firmware/

$ tree external/rkwifibt/firmware/ -L 3
external/rkwifibt/firmware/
├── broadcom
│   ├── all
│   │   ├── BT_FIRMWARE
│   │   └── WIFI_FIRMWARE
│   ├── AP6181
│   │   └── wifi
│   ├── AP6212A1
│   │   ├── bt
│   │   └── wifi
│   ├── AP6236
│   │   ├── bt
│   │   └── wifi
│   ├── AP6255
│   │   ├── bt
│   │   └── wifi
│   ├── AP6354
│   │   ├── bt
│   │   └── wifi
│   ├── AW-CM256
│   │   ├── bt
│   │   └── wifi
│   └── AW-NB197
│       ├── bt
│       └── wifi
└── rockchip
    └── WIFI_FIRMWARE
        ├── rk912_fw.bin
        ├── rk912_patch.bin
        └── rk912_patch_cal.bin

在设备烧录新内核后，新建文件夹并安装驱动

$ mkdir -p /system/etc/firmware/
# 安装wifi驱动，实际用的是fw_bcm43438a1.bin
$ scp -r host@ip:/sdkpath/external/rkwifibt/firmware/broadcom/all/WIFI_FIRMWARE/*  /system/etc/firmware/
# 安装bt驱动
$ scp -r host@ip:/sdkpath/external/rkwifibt/firmware/broadcom/all/BT_FIRMWARE/*  /system/etc/firmware/
sync
# 重启设备
$ sync && reboot

驱动日志

[    1.518554] Bluetooth: RFCOMM socket layer initialized
[    1.519067] Bluetooth: RFCOMM ver 1.11
[    1.519494] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[    1.520045] Bluetooth: HIDP socket layer initialized
[    1.520624] [WLAN_RFKILL]: Enter rfkill_wlan_init
[    1.521708] [WLAN_RFKILL]: Enter rfkill_wlan_probe
[    1.522191] [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi_chip_type = ap6212
[    1.522890] [WLAN_RFKILL]: wlan_platdata_parse_dt: enable wifi power control.
[    1.523598] [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi power controled by gpio.
[    1.524312] of_get_named_gpiod_flags: can't parse 'WIFI,poweren_gpio' property of node '/wireless-wlan[0]'
[    1.524332] of_get_named_gpiod_flags: can't parse 'WIFI,vbat_gpio' property of node '/wireless-wlan[0]'
[    1.524350] of_get_named_gpiod_flags: can't parse 'WIFI,reset_gpio' property of node '/wireless-wlan[0]'
[    1.524529] of_get_named_gpiod_flags: parsed 'WIFI,host_wake_irq' property of node '/wireless-wlan[0]' - status (0)
[    1.524546] [WLAN_RFKILL]: wlan_platdata_parse_dt: get property: WIFI,host_wake_irq = 10, flags = 0.
[    1.525490] [WLAN_RFKILL]: wlan_platdata_parse_dt: The ref_wifi_clk not found !
[    1.526219] [WLAN_RFKILL]: rfkill_wlan_probe: init gpio
[    1.526767] [WLAN_RFKILL]: Exit rfkill_wlan_probe
[    1.527407] [BT_RFKILL]: Enter rfkill_rk_init
[    1.529191] of_get_named_gpiod_flags: parsed 'uart_rts_gpios' property of node '/wireless-bluetooth[0]' - status (0)
[    1.529212] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: uart_rts_gpios = 51.
[    1.530053] of_get_named_gpiod_flags: parsed 'BT,power_gpio' property of node '/wireless-bluetooth[0]' - status (0)
[    1.530065] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,power_gpio = 72.
[    1.530799] of_get_named_gpiod_flags: can't parse 'BT,reset_gpio' property of node '/wireless-bluetooth[0]'
[    1.530814] of_get_named_gpiod_flags: can't parse 'BT,wake_gpio' property of node '/wireless-bluetooth[0]'
[    1.530853] of_get_named_gpiod_flags: parsed 'BT,wake_host_irq' property of node '/wireless-bluetooth[0]' - status (0)
[    1.530864] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,wake_host_irq = 11.
[    1.531623] [BT_RFKILL]: bluetooth_platdata_parse_dt: clk_get failed!!!.
[    1.532314] [BT_RFKILL]: Request irq for bt wakeup host
[    1.532897] [BT_RFKILL]: ** disable irq
[    1.533530] [BT_RFKILL]: bt_default device registered.

$ dmesg |grep RFKILL
[    1.520624] [WLAN_RFKILL]: Enter rfkill_wlan_init
[    1.521708] [WLAN_RFKILL]: Enter rfkill_wlan_probe
[    1.522191] [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi_chip_type = ap6212
[    1.522890] [WLAN_RFKILL]: wlan_platdata_parse_dt: enable wifi power control.
[    1.523598] [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi power controled by gpio.
[    1.524546] [WLAN_RFKILL]: wlan_platdata_parse_dt: get property: WIFI,host_wake_irq = 10, flags = 0.
[    1.525490] [WLAN_RFKILL]: wlan_platdata_parse_dt: The ref_wifi_clk not found !
[    1.526219] [WLAN_RFKILL]: rfkill_wlan_probe: init gpio
[    1.526767] [WLAN_RFKILL]: Exit rfkill_wlan_probe
[    1.527407] [BT_RFKILL]: Enter rfkill_rk_init
[    1.529212] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: uart_rts_gpios = 51.
[    1.530065] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,power_gpio = 72.
[    1.530864] [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,wake_host_irq = 11.
[    1.531623] [BT_RFKILL]: bluetooth_platdata_parse_dt: clk_get failed!!!.
[    1.532314] [BT_RFKILL]: Request irq for bt wakeup host
[    1.532897] [BT_RFKILL]: ** disable irq
[    1.533530] [BT_RFKILL]: bt_default device registered.
[    1.621325] [WLAN_RFKILL]: rockchip_wifi_get_oob_irq: Enter
[    1.623931] [WLAN_RFKILL]: rockchip_wifi_power: 1
[    1.623938] [WLAN_RFKILL]: wifi turn on power. -1
[    2.004318] [WLAN_RFKILL]: rockchip_wifi_power: 0
[    2.005584] [WLAN_RFKILL]: wifi shut off power.
[    4.014704] [BT_RFKILL]: ENABLE UART_RTS
[    4.115496] [BT_RFKILL]: DISABLE UART_RTS
[    4.115586] [BT_RFKILL]: bt turn on power

测试wlan0

$ ls /sys/class/net/
docker0  dummy0  eth0  lo  usb0  wlan0

$ sudo ifconfig wlan0 up

# 搜索附近wifi
sudo iwlist wlan0 scanning
wlan0     Scan completed :
          Cell 01 - Address: F0:92:B4:0B:89:79
                    ESSID:"ChinaNet-Qwyj"
                    Mode:Managed
                    Frequency=2.417 GHz (Channel 2)
                    Quality:2/5  Signal level:-71 dBm  Noise level:0 dBm
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F204104A00011010440001021049000600372A000120
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s

#  显示频道信息
sudo iwlist wlan0 frequen
wlan0     13 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Current Channel:1
          
# 连接wifi
sudo vim /etc/wpa_supplicant/wpa_supplicant.conf
    # 填入以下信息
    ctrl_interface=/var/run/wpa_supplicant
    update_config=1
    country=CN

    network={
        ssid="4G-WIFI-A16C"
        psk="12345678"
    }

sudo wpa_supplicant -B -c /etc/wpa_supplicant/wpa_supplicant.conf -i wlan0
Successfully initialized wpa_supplicant

# 动态分配ip
sudo dhclient wlan0

# 断开或停止wifi
sudo killall wpa_supplicant

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