RTL8723BU-WiFi-BT模块移植(WiFi部分)

2021-09-02 来源：乌哈旅游

本次修改基于厂商提供的

RTL8723BU_WiFi_linux_v4.3.16_14189.20150519_BTCOEX2015119-5844包

下载链接：http://download.csdn.net/detail/bhj1119/9761769

一修改记录：

1.配置linux内核

(1)Networking support --->Wireless下增加802.11 协议栈的支持

---

Wireless

cfg80211 - wireless configuration API

[*] nl80211 testmode command

[*] enable warnings

[*] cfg80211 regulatory debugging

[*] enable powersave by default

developer

[ ] cfg80211 DebugFS entries

[ ] use statically compiled regulatory rules database

[*] cfg80211 wireless extensions compatibility

[*] Wireless extensions sysfs files

-*- Common routines for IEEE802.11 drivers

[ ] lib80211 debugging messages

[*] Allow reconnect while already connected

Generic IEEE 802.11 Networking Stack (mac80211)

[ ] PID controller based rate control algorithm

[*] Minstrel

[*] Minstrel 802.11n support

Default rate control algorithm (Minstrel) --->

[*] Enable mac80211 mesh networking (pre-802.11s) support

[*] Enable LED triggers

[ ] Export mac80211 internals in DebugFS

[ ] Select mac80211 debugging features --->

(2) 配置Device Drivers --->USB support ---><*> USB Wireless Device Management support 支持WIFI

2.将RTL8723BU_WiFi_linux_v4.3.16_14189.20150519_BTCOEX2015119-5844/driver下的压缩包拷贝到ANDROID_SDK/kernel_imx/drivers/net/wireless下，解压，修改其Makefile，编译wifi驱动模块,修改内容如下：

CONFIG_PLATFORM_IMX6Q = y

ifeq ($(CONFIG_PLATFORM_IMX6Q), y)

EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN

EXTRA_CFLAGS += -DCONFIG_IOCTL_CFG80211 -DCONFIG_PLATFORM_ANDROID

DRTW_USE_CFG80211_STA_EVENT

DCONFIG_ANDROID -DCONFIG_CONCURRENT_MODE

ARCH := arm

CROSS_COMPILE := XXX/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-

KSRC := XXX/kernel_imx//

MODULE_NAME := 8723bu

endif

如果（1）中选项没有选上，会导致加载wifi模块时报如下错误：

rtl8723bu: no symbol version for cfg80211_ready_on_channel

rtl8723bu: Unknown symbol cfg80211_ready_on_channel (err -22)

rtl8723bu: Unknown symbol odm_SwAntDetectInit (err 0)

rtl8723bu: no symbol version for __ieee80211_get_channel

rtl8723bu: Unknown symbol __ieee80211_get_channel (err -22)

rtl8723bu: no symbol version for cfg80211_roamed

rtl8723bu: Unknown symbol cfg80211_roamed (err -22)

rtl8723bu: no symbol version for wiphy_register

rtl8723bu: Unknown symbol wiphy_register (err -22)

原因就是：编译WiFi模块时会去KSRC所指的路径下找相应的库，若果相关的编译选项没有选上会导致某些库缺失，从而导致编出来的WiFi模块不完整。

上述是由于编译内核时内有勾选80211协议栈导致。

3.用厂商提供的hardware/realtek 替换hardware/realtek

4.用厂商提供的wpa_supplicant_8_kk_4.4_rtw_r12456.20141003替ANDROID_SDK/extern/wpa_supplicant_8，并修改文件夹的名字为wpa_supplicant_8。5.hardware/libhardware_legacy/wifi/Android.mk

修改内容如下：

--- Android.mk (版本 170)

+++ Android.mk (工作副本)

@@ -49,15 +49,21 @@

LOCAL_CFLAGS += DWIFI_DRIVER_FW_PATH_PARAM=\\\"$(WIFI_DRIVER_FW_PATH_PARAM)\\\"

endif

-ifeq ($(BOARD_WLAN_DEVICE),UNITE)

换

- LOCAL_C_INCLUDES $(LOCAL_PATH)/../../external/wpa_supplicant_ath/wpa_supplicant/src/common

- LOCAL_SRC_FILES += wifi/wifi_unite.c

-else ifeq ($(BOARD_WLAN_VENDOR), INTEL)

- LOCAL_SRC_FILES += wifi/wifi_intel.c

- LOCAL_C_INCLUDES $(LOCAL_PATH)/../../external/wpa_supplicant_8/src/common

+#ifeq ($(BOARD_WLAN_DEVICE),UNITE)

+# LOCAL_C_INCLUDES $(LOCAL_PATH)/../../external/wpa_supplicant_ath/wpa_supplicant/src/common

+# LOCAL_SRC_FILES += wifi/wifi_unite.c

+#else ifeq ($(BOARD_WLAN_VENDOR), INTEL)

+# LOCAL_SRC_FILES += wifi/wifi_intel.c

+# LOCAL_C_INCLUDES $(LOCAL_PATH)/../../external/wpa_supplicant_8/src/common

+#else

+# LOCAL_SRC_FILES += wifi/wifi.c

+# LOCAL_C_INCLUDES $(LOCAL_PATH)/../../external/wpa_supplicant_8/src/common

+#endif

+ifeq ($(BOARD_WIFI_VENDOR), realtek)

+LOCAL_SRC_FILES += ../realtek/wlan/libhardware_legacy/wifi/wifi_realtek.c

else

- LOCAL_SRC_FILES += wifi/wifi.c

- LOCAL_C_INCLUDES $(LOCAL_PATH)/../../external/wpa_supplicant_8/src/common

+LOCAL_SRC_FILES += wifi/wifi.c

endif

6.修改device/fsl/sabresd_6dq/BoardConfig.mk

修改内容如下：

--- BoardConfig.mk (版本 170)

+++ BoardConfig.mk (工作副本)

@@ -26,6 +26,33 @@

TARGET_BOOTLOADER_BOARD_NAME := SABRESD

PRODUCT_MODEL := SABRESD-MX6DQ

+BOARD_WIFI_VENDOR := realtek

+ifeq ($(BOARD_WIFI_VENDOR), realtek)

+WPA_SUPPLICANT_VERSION := VER_0_8_X

+BOARD_WPA_SUPPLICANT_DRIVER := NL80211

+CONFIG_DRIVER_WEXT :=y

+BOARD_WPA_SUPPLICANT_PRIVATE_LIB := lib_driver_cmd_rtl

+BOARD_HOSTAPD_DRIVER := NL80211

+BOARD_HOSTAPD_PRIVATE_LIB := lib_driver_cmd_rtl

+#BOARD_WLAN_DEVICE := rtl8192cu

+#BOARD_WLAN_DEVICE := rtl8192du

+#BOARD_WLAN_DEVICE := rtl8192ce

+#BOARD_WLAN_DEVICE := rtl8192de

+#BOARD_WLAN_DEVICE := rtl8723as

+#BOARD_WLAN_DEVICE := rtl8723au

+#BOARD_WLAN_DEVICE := rtl8189es

+#BOARD_WLAN_DEVICE := rtl8723bs

+BOARD_WLAN_DEVICE := rtl8723bu

+WIFI_DRIVER_MODULE_NAME := \"8723bu\"

+WIFI_DRIVER_MODULE_PATH := \"/system/lib/modules/8723bu.ko\"

+WIFI_DRIVER_MODULE_ARG := \"ifname=wlan0 if2name=p2p0\"

+WIFI_FIRMWARE_LOADER := \"\"

+WIFI_DRIVER_FW_PATH_STA := \"\"

+WIFI_DRIVER_FW_PATH_AP := \"\"

+WIFI_DRIVER_FW_PATH_P2P := \"\"

+WIFI_DRIVER_FW_PATH_PARAM := \"\"

+else

# UNITE is a virtual device support both atheros and realtek wifi(ar6103 and rtl8723as)

BOARD_WLAN_DEVICE := UNITE

WPA_SUPPLICANT_VERSION := VER_0_8_UNITE

@@ -39,6 +66,7 @@

BOARD_WPA_SUPPLICANT_PRIVATE_LIB_QCOM := lib_driver_cmd_qcwcn

BOARD_HOSTAPD_PRIVATE_LIB_RTL := lib_driver_cmd_rtl

BOARD_WPA_SUPPLICANT_PRIVATE_LIB_RTL := lib_driver_cmd_rtl

+endif

#for intel vendor

ifeq ($(BOARD_WLAN_VENDOR),INTEL)

BOARD_HOSTAPD_PRIVATE_LIB := private_lib_driver_cmd

@@ -118,3 +146,4 @@

fs_use \\

untrusted_app.te \\

genfs_contexts

上述步骤完成后，到根目录下执行make 编译整个系统。

二测试

1.安装cfg80211.ko，8723bu.ko依赖此模块，缺省会报如下错误：

8723bu: Unknown symbol cfg80211_ready_on_channel (err 0)

8723bu: Unknown symbol __ieee80211_get_channel (err 0)

8723bu: Unknown symbol cfg80211_roamed (err 0)

8723bu: Unknown symbol wiphy_register (err 0)

8723bu: Unknown symbol cfg80211_disconnected (err 0)

8723bu: Unknown symbol cfg80211_new_sta (err 0)

8723bu: Unknown symbol cfg80211_connect_result (err 0)

8723bu: Unknown symbol cfg80211_inform_bss_frame (err 0)

2.安装8723bu.ko模块，两个模块都安装好之后，执行netcfg，会看到多出wlan0和p2p0设备节点，他们是8723bu驱动创建出来的，放到sys/class/net/下。

lo UP 127.0.0.1/8 0x00000049 00:00:00:00:00:00

can0 DOWN 0.0.0.0/0 0x00000080 00:00:00:00:00:00

can1 DOWN 0.0.0.0/0 0x00000080

00:00:00:00:00:00

eth0 UP 0.0.0.0/0 0x00001043 1e:ed:19:27:1a:b3

wlan0 DOWN 0.0.0.0/0 0x00001002 7c:c7:09:30:c5:4d

p2p0 DOWN 0.0.0.0/0 0x00001002 7e:c7:09:30:c5:4d

3.执行ifconfig wlan0 up，打开wlan0

4.执行system/bin/wpa_supplicant -Dnl80211 -iwlan0 -

c/etc/wifi/wpa_supplicant.conf，启动wpa_supplicant进程。

启动过程报如下错误：

E/wpa_supplicant( 3251): mkdir[ctrl_interface=wlan0]: Permission denied

E/wpa_supplicant( 3251): Failed to initialize control interface 'wlan0'.

E/wpa_supplicant( 3251): You may have another wpa_supplicant process already running or the file was

E/wpa_supplicant( 3251): left by an unclean termination of wpa_supplicant in which

case you will need

E/wpa_supplicant( 3251): to manually remove this file before starting wpa_supplicant again.

错误原因：wpa_supplicant进程运行时的配置文件wpa_supplicant.conf文件中的ctrl_interface的路径不对，没有匹配成功，导致进程启动失败。原来ctrl_interface的路径是/var/run/wpa_supplicant，把ctrl_interface改成/data/misc/wifi/wpa_supplicant就可以了。

ctrl_interface在哪里？在工程下的

external/wpa_supplicant_8/wpa_supplicant/wpa_supplicant.conf中。

深入分析：

wpa_supplicant_init_iface函数分析

init_iface初始化的第一个工作是解析运行时配置文件。其中，wpa_s->confname的值为“/data/misc/wifi/wpa_supplicant.conf”,解析函数是wpa_config_read。

wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);

if (wpa_s->ctrl_iface == NULL) {

wpa_printf(MSG_ERROR,

\"Failed to initialize control interface '%s'.\\n\"

\"You may have another wpa_supplicant process \"

\"already running or the file was\\n\"

\"left by an unclean termination of wpa_supplicant \"

\"in which case you will need\\n\"

\"to manually remove this file before starting \"

\"wpa_supplicant again.\\n\

wpa_s->conf->ctrl_interface);

return -1;

}

如果是linux系统，可能没有wpa_supplicant工具，可参考wpa_supplicant-2.6交叉编译，移植此工具。

5.执行system/bin/wpa_cli -p/data/misc/wifi/wpa_supplicant，配置并连接wifi热点。

Could not connect to wpa_supplicant: wlan0 - re-trying

wpa_cli v2.0-devel-4.4.2_rtw_r12456.20141003

This software may be distributed under the terms of the BSD license.

See README for more details.

Selected interface 'wlan0'

Interactive mode

1）> scan

<3>CTRL-EVENT-STATE-CHANGE id=-1 state=3 BSSID=00:00:00:00:00:00 SSID=

<3>CTRL-EVENT-SCAN-RESULTS

<3>WPS-AP-AVAILABLE

<3>CTRL-EVENT-STATE-CHANGE id=-1 state=2 BSSID=00:00:00:00:00:00 SSID=

2）> scan_results

bssid / frequency / signal level / flags / ssid

78:eb:14:bd:f6:9e 2412 -58 [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS] B1412

bc:67:1c:41:29:4d 2437 -65 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][WPS][ESS] systec-cisco

e0:05:c5:23:fc:52 2452 -71 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][WPS][ESS]

30:fc:68:0b:c9:f6 CCMP][ESS] gsdq

2437 -71 [WPA-PSK-CCMP][WPA2-PSK-

ec:26:ca:53:ea:f1 2462 -72 [WPA-PSK-CCMP][WPA2-PSK-CCMP][WPS][ESS] TP-LINK_EAF1

00:1f:f3:bf:d0:6f 2462 -73 [WPA2-PSK-CCMP][ESS] tcs apple

d4:ee:07:29:9b:4a 2442 -73 [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS] Cherry&Filippo

24:69:68:16:a9:1e 2462 -74 [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS] \\xe6\\xb2\\x83\\xe7\\x95\\x89

fc:d7:33:8d:0a:36 2412 -74 [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS] dangyuanweixin

b0:c0:90:3a:24:a3 2422 -74 [WPA2-PSK-

CCMP][ESS] 360\\xe8\\xa1\\x8c\\xe8\\xbd\\xa6\\xe8\\xae\\xb0\\xe5\\xbd\\x95\\xe4\\xbb\\xaa-A3

c8:3a:35:1f:5f:88 2422 -80 [WPA-PSK-CCMP][WPA2-PSK-

CCMP][ESS] wangzihao

c8:3a:35:06:a9:b0 2452 -82 [WPA-PSK-CCMP][ESS] Tenda_06A9B0

00:3a:99:9b:9b:40 2417 -45 [WEP][ESS] systec-AP

00:0c:43:30:50:a0 2437 -51 [ESS] Wii-Link_3050A0

08:10:78:e1:27:a5 2412 -74 [ESS] NETCORE_27A5

3）> add_network

4）> set_network 0 ssid \"systec-cisco\"

5）> set_network 0 psk \"XXX\"

6）> select_network 0

<3>CTRL-EVENT-STATE-CHANGE SSID=systec-cisco

id=0 state=3 BSSID=00:00:00:00:00:00

<3>CTRL-EVENT-SCAN-RESULTS

<3>WPS-AP-AVAILABLE

<3>Trying to associate with bc:67:1c:41:29:4d (SSID='systec-cisco' freq=2437 MHz)

<3>CTRL-EVENT-STATE-CHANGE SSID=systec-cisco

id=0 state=5 BSSID=00:00:00:00:00:00

<3>CTRL-EVENT-STATE-CHANGE SSID=systec-cisco

id=0 state=6 BSSID=00:00:00:00:00:00

<3>Associated with bc:67:1c:41:29:4d

<3>CTRL-EVENT-STATE-CHANGE SSID=systec-cisco

id=0 state=7 BSSID=bc:67:1c:41:29:4d

<3>CTRL-EVENT-STATE-CHANGE SSID=systec-cisco

id=0 state=8 BSSID=bc:67:1c:41:29:4d

<3>WPA: Key negotiation completed with bc:67:1c:41:29:4d [PTK=CCMP GTK=TKIP]

<3>CTRL-EVENT-CONNECTED - Connection to bc:67:1c:41:29:4d completed (auth) [id=0 id_str=]

<3>CTRL-EVENT-STATE-CHANGE SSID=systec-cisco

7）enable_network 0

查看链接状态：

> status

bssid=bc:67:1c:41:29:4d

ssid=systec-cisco

id=0

mode=station

pairwise_cipher=CCMP

id=0 state=9 BSSID=bc:67:1c:41:29:4d

group_cipher=TKIP

key_mgmt=WPA2-PSK

wpa_state=COMPLETED

p2p_device_address=7c:c7:09:30:c5:4d

address=7c:c7:09:30:c5:4d

<3>CTRL-EVENT-STATE-CHANGE SSID=systec-cisco

id=0 state=9 BSSID=bc:67:1c:41:29:4d

<3>CTRL-EVENT-CONNECTED - connection to bc:67:1c:41:29:4d completed (auth) [id=0 id_str=]

执行dhcpcd wlan0 分配IP，此时再netcfg查看，wlan0de ip 已经变成10.0.0.118

root@sabresd_6dq:/ # netcfg

lo UP 127.0.0.1/8 0x00000049 00:00:00:00:00:00

can0 DOWN 0.0.0.0/0 0x00000080 00:00:00:00:00:00

can1 DOWN 0.0.0.0/0 0x00000080 00:00:00:00:00:00

eth0 UP 0.0.0.0/0 0x00001043 1e:ed:19:27:1a:b3

wlan0 UP 10.0.0.118/24 7c:c7:09:30:c5:4d

p2p0 DOWN 0.0.0.0/0 7e:c7:09:30:c5:4d

ping 一下看看通不通

root@sabresd_6dq:/ # ping 192.168.1.1

PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.

64 bytes from 192.168.1.1: icmp_seq=1 ttl=63 time=29.1 ms

64 bytes from 192.168.1.1: icmp_seq=2 ttl=63 time=15.9 ms

64 bytes from 192.168.1.1: icmp_seq=3 ttl=63 time=16.4 ms

64 bytes from 192.168.1.1: icmp_seq=4 ttl=63 time=14.3 ms

0x00001002 0x00001043

64 bytes from 192.168.1.1: icmp_seq=5 ttl=63 time=14.0 ms

--- 192.168.1.1 ping statistics ---

5 packets transmitted, 5 received, 0% packet loss, time 4006ms

rtt min/avg/max/mdev = 14.034/17.991/29.183/5.672 ms

至此wifi模块移植完毕，可以实现扫描，链接，分配IP

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RTL8723BU-WiFi-BT模块移植(WiFi部分)