【目的】

       8188EU 在AM335X MC183上以AP+STA工作。

【环境】

1、  Ubuntu 16.04发行版

2、  linux-3.2.0-psp04.06.00.11

3、  MC183平台

4、  交叉编译器arm-linux-gnueabihf-gcc-4.7.3

【实验步骤】

1、 配置内核

Device Drivers —> 开启WIRELESS LAN

    Network device supports —>

        [*] Wireless LAN  —>

            <*> IEEE 802.11 for Host AP (Prism2/2.5/3 and WEP/TKIP/CCMP)

                [*] Support downloading firmware images with Host AP driver

                    [*] Support for non-volatile firmware download

    [*]   USB support —>

        <*>   USB Wireless Device Management support

2、 重新编译内核

       $  ./build.sh

3、 8188eu 驱动生成

1.1解压RTL8188EUS_RTL8189ES_linux_v4.1.8_9499.20131104-am335.tar.gz

 

1.2进入RTL8188EUS_RTL8189ES_linux_v4.1.8_9499.20131104/driver/rtl8188EUS_rtl8189ES_linux_v4.1.8_9499.20131104  目录

1.3 移植

修该顶层的Makefile,如下红色部分为应该注意的地放,主要是编译器,内核版本,及内核源码所在的位置。

466 ifeq ($(CONFIG_PLATFORM_ARM_S3C2K4), y)

467 EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN

468 ARCH := arm

469 CROSS_COMPILE := arm-linux-gnueabihf-

470 KVER  := 3.2.0

471 #chy panzidong

472 #KSRC := /root/board/am335/project/xlsw/linux-3.2.0-psp04.06.00.11

473 KSRC := /home/vmuser/sdc/remote_svn/anosi-hardware/iotx-am335x/MC-183/trunk/kernel/linux-3.2.0-psp04.06.00.11

=====开启CONCURRENT_MODE模式,用于支持STA+AP MODE===

vim include/autoconf.h +114

vim autoconf_rtl8188e_usb_linux.h +114

114         // change by panzidong

115         #define CONFIG_CONCURRENT_MODE

116         #ifdef CONFIG_CONCURRENT_MODE

117                 //#define CONFIG_HWPORT_SWAP                            //Port0->Sec , Port1 -> Pri

118                 //#define CONFIG_STA_MODE_SCAN_UNDER_AP_MODE

119                 #define CONFIG_TSF_RESET_OFFLOAD                        // For 2 PORT TSF SYNC.

120         #endif

编译驱动:

make

  Building modules, stage 2.

  MODPOST 1 modules

  CC      /home/vmuser/sdc/remote_svn/anosi-hardware/iotx-am335x/MC-183/package/source/RTL8188EUS_RTL8189ES_linux_v4.1.8_9499.20131104/driver/rtl8188EUS_rtl8189ES_linux_v4.1.8_9499.20131104/8188eu.mod.o

  LD [M]  /home/vmuser/sdc/remote_svn/anosi-hardware/iotx-am335x/MC-183/package/source/RTL8188EUS_RTL8189ES_linux_v4.1.8_9499.20131104/driver/rtl8188EUS_rtl8189ES_linux_v4.1.8_9499.20131104/8188eu.ko

在当前目录下面会生成8188eu.ko.

4、 交叉编译hostapd

交叉编译hostapd

cd RTL8188EUS_RTL8189ES_linux_v4.1.8_9499.20131104/wpa_supplicant_hostapd/wpa_supplicant_hostapd-0.8_rtw_r7475.20130812/hostapd

修该顶层的Makefile

  1 CC=arm-linux-gnueabihf-gcc

  2

  3 ifndef CFLAGS

  4 CFLAGS = -MMD -O2 -Wall -g

  5 endif

编译:

Make

  LD  hostapd

  CC  hostapd_cli.c

  CC  ../src/common/wpa_ctrl.c

  LD  hostapd_cli

最终会在当前的目录下面生在hostapd hostapd_cli两个命令。其中hostapd为我们所需要的工具。

5、 交叉编译wpa相关的工具

交叉编译wpa_supplicant

cd RTL8188EUS_RTL8189ES_linux_v4.1.8_9499.20131104/wpa_supplicant_hostapd/wpa_supplicant_hostapd-0.8_rtw_r7475.20130812/wpa_supplicant

修该顶层的Makefile

  1 CC=arm-linux-gnueabihf-gcc

  2

  3 ifndef CFLAGS

  4 CFLAGS = -MMD -O2 -Wall -g

  5 endif

编译:

Make

  LD  wpa_supplicant

  CC  wpa_passphrase.c

  LD  wpa_passphrase

  CC  wpa_cli.c

  CC  ../src/common/wpa_ctrl.c

  CC  ../src/utils/edit_simple.c

  LD  wpa_cli

最终会在当前的目录下面生在wpa_supplicant wpa_passphrase wpa_cli

三个命令。三者皆为我们所需要的工具

 

6、 交叉编译dnsmasq-2.73

Dnsmasq是个轻量级的DHCP服务,配合hostapd使有,提供本地DHCP功能。

通过如下命令解压 dnsmasq-2.73.tar.xz

dnsmasq-2.73.tar.xz

xz –d dnsmasq-2.73.tar.xz

tar vxf dnsmasq-2.73.tar

cd dnsmasq-2.7

修该Makefile

 

 

make

 

dnsmasq在当前的src目录下生成

7、 测试

1.1   AP测试

# mkdir /lib/modules/3.2.0/kernel/drivers/wifi

mkdir -p /lib/modules/3.2.0/kernel/drivers/wifi

# download 8188eu.ko

wget http://192.168.3.88/8188eu/8188eu.ko -O /lib/modules/3.2.0/kernel/drivers/wifi/8188eu.ko   &&  chmod  +x  /lib/modules/3.2.0/kernel/drivers/wifi/8188eu.ko

# download hostapd

wget http://192.168.3.88/8188eu/hostapd -O  /bin/hostapd   &&  chmod  +x  /bin/hostapd

# download rtl_hostapd_2G.conf

wget http://192.168.3.88/8188eu/rtl_hostapd_2G.conf -O  /etc/rtl_hostapd_2G.conf   &&  chmod  0666  /etc/rtl_hostapd_2G.conf\

# download dnsmasq

wget http://192.168.3.88/8188eu/dnsmasq -O  /sbin/dnsmasq   &&  chmod  +x  /sbin/dnsmasq

# download dnsmasq.conf

wget http://192.168.3.88/8188eu/dnsmasq.conf -O  /etc/dnsmasq.conf   &&  chmod  0666 /etc/dnsmasq.conf

# mkdir /var/lib/misc ,如不创建的话,dnsmasq无法正常运行。

mkdir -p  /var/lib/misc

sleep 2

# insmod 8818eu.ko

insmod /lib/modules/3.2.0/kernel/drivers/wifi/8188eu.ko

sleep 5

# 开启wlan0

ifconfig wlan0 up

# start hostapd

hostapd /etc/rtl_hostapd_2G.conf -B  &

sleep 6

# set wlan0 static ip

ifconfig wlan0 192.168.188.1

# start dnsmasq

dnsmasq -C /etc/dnsmasq.conf

 

à  此时可联接到热点名称为rtwap的热点,密码为87654321

 

其中rtl_hostapd_2G.conf内容如下所示

interface=wlan0

ctrl_interface=/var/run/hostapd

ssid=rtwap

channel=6

wpa=2

wpa_passphrase=87654321

eap_server=1

wps_state=2

uuid=12345678-9abc-def0-1234-56789abcdef0

device_name=RTL8192CU

manufacturer=Realtek

model_name=RTW_SOFTAP

model_number=WLAN_CU

serial_number=12345

device_type=6-0050F204-1

os_version=01020300

config_methods=label display push_button keypad

driver=rtl871xdrv

beacon_int=100

hw_mode=g

ieee80211n=1

wme_enabled=1

ht_capab=[SHORT-GI-20][SHORT-GI-40][HT40+]

wpa_key_mgmt=WPA-PSK

wpa_pairwise=CCMP

max_num_sta=8

wpa_group_rekey=86400

 

其中dnsmasq.conf,内容如下所示

interface=wlan0

listen-address=192.168.188.1,127.0.0.1

domain=iotx.thekelleys.org.uk

dhcp-range=192.168.188.100,192.168.188.200,12h

      

1.2    STA测试:  

连接点为BX240721的热点:

        将热点名称和密码写入配置文件当中:

wpa_passphrase “TEST AP SSID” “TEST AP PASSWORD”  > /etc/wpa_supplicant.conf

        开启wpa_supplicant服务用来连接特定的热点:

wpa_supplicant –iwlan1 -c /etc/wpa_supplicant.conf –B

        获取wlan1的IP地址:

udhcpc -i wlan1

        如果正常的话,会发现wlan1拿到正确的IP地址。

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