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linux USB无线网卡（RTL8188EUS）驱动
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I.MX6ULL 手册查找使用方法 实战点亮LED（寄存器版） I.MX6ULL 手册查找使用方法 实战点亮LED（固件库版本） linux 字符设备驱动实战 linux LED设备驱动文件 linux 设备树(.dts)实战解析 linux 使用设备树点亮LED 实战 linux 驱动中并发与竞争 linux 内核定时器 linux 内核中断理解 linux 驱动阻塞和非阻塞 linux 内核异步通知 linux platform驱动框架 linux 内核自带的LED灯驱动 linux misc设备驱动 linux input子系统 linux 深入理解I2C内核驱动 linux SPI 驱动 文章目录 驱动简介删除内核自带的RTL8192CU驱动添加源码驱动配置linux内核wirless tools移植wps_supplicant移植openssl工具移植libnl库移植wpa_supplicant移植 驱动简介RTL8188EUS， usb无线网卡驱动 源码 RTL8188EUS Kconfig是文件WIFI驱动的配置界面文档，图形界面配置文件 内容如下： menuconfig REALTEK_WIFI tristate "Realtek wifi" if REALTEK_WIFI choice prompt "select wifi type" default RTL8189FS config RTL8189FS depends on REALTEK_WIFI tristate "rtl8189fs/ftv sdio wifi" config RTL8188EUS depends on REALTEK_WIFI tristate "rtl8188eus usb wifi" config RTL8192CU depends on REALTEK_WIFI tristate "Realtek 8192C USB WiFi" endchoice endif 删除内核自带的RTL8192CU驱动内核自带的RTL8192CU驱动不稳定需要删除，内核源码中，drivers/net/wireless/rtlwifi/Kconfig 删除 config RTL8192CU tristate "Realtek RTL8192CU/RTL8188CU USB Wireless Network Adapter" depends on USB select RTLWIFI select RTLWIFI_USB select RTL8192C_COMMON ---help--- This is the driver for Realtek RTL8192CU/RTL8188CU 802.11n USB wireless network adapters. If you choose to build it as a module, it will be called rtl8192cudrivers/net/wireless/rtlwifi/Makefile obj-$(CONFIG_RTL8192CU) += rtl8192cu/ 添加源码驱动 拷贝源码文件到内核文件中2）修改Kconfig文件 打开 drivers/net/wireless/Kconfig 添加 source "drivers/net/wireless/realtek/Kconfig"这样WIFI驱动的配置界面才会出现在linux内核配置界面上 3）修改Makefile文件 打开 drivers/net/wireless/Makefile 添加 obj-y += realtek/编译realtek中的程序。 配置linux内核配置RTL8188驱动，先要配置USB，WIFI，802.11内核中的支持。 配置USB支持 -> Device Drivers -> USB support -> Support for Host-side USB -> EHCI HCD (USB 2.0) support -> OHCI HCD (USB 1.1) support -> ChipIdea Highspeed Dual Role Controller -> [*] ChipIdea device controller -> [*] ChipIdea host controller配置WIFI支持 -> Device Drivers -> [*] Network device support -> [*] 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配置IEEE 802.11支持 -> Networking support -> -*- Wireless -> [*] cfg80211 wireless extensions compatibility -> Generic IEEE 802.11 Networking Stack (mac80211)编译WIFI驱动 将rtl81xx编译为驱动模块 -> Device Drivers -> Network device support (NETDEVICES [=y]) -> Wireless LAN (WLAN [=y]) -> Realtek wifi (REALTEK_WIFI [=m]) -> (M) select wifi type -> (M) rtl8189fs/ftv sdio wifi -> (M) rtl8188eus usb wifi -> (M) Realtek 8192C USB WiFi执行编译命令 make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- all -j16在 rtl8189FS，rtl8188EUS，rtl8192CU目录下有相应的.ko文件生成。并将.ko文件复制到开发版的目录/lib/modules/4.1.15中 驱动加载： depmod modprobe 8188cu.ko modprobe 8192cu.ko root@ATK-IMX6U:~# modprobe 8188eu root@ATK-IMX6U:~# modprobe 8192cu [ 182.035128] usbcore: registered new interface driver rtl8192cu查看网卡是否存在,一般是wlan0 ifconfig -a ... wlan0 Link encap:Ethernet HWaddr 00:13:ef:f1:3d:54 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)如何上网，需要移植工具 wirless tools wirless tools移植源码包： iwlist_for_visteon-master.tar.bz2 解压后Makefile修改变量 ## Compiler to use (modify this for cross compile). CC = arm-linux-gnueabihf-gcc ## Other tools you need to modify for cross compile (static lib only). AR = arm-linux-gnueabihf-ar RANLIB = arm-linux-gnueabihf-ranlib make clean make生成 iwlist、iwconfig、iwspy、iwpriv、ifrename 这 5 个工具，还有 libiw.so.29 这个库文件。 工具复制到/usr/bin 目录下，libiw.so.29复制到/usr/lib 目录下 工具测试： root@ATK-IMX6U:~# iwlist Usage: iwlist [interface] scanning [essid NNN] [last] [interface] frequency [interface] channel [interface] bitrate [interface] rate [interface] encryption [interface] keys [interface] power [interface] txpower [interface] retry [interface] ap [interface] accesspoints [interface] peers [interface] event [interface] auth [interface] wpakeys [interface] genie [interface] modulation root@ATK-IMX6U:~# ifconfig wlan0 up [ 595.734197] ==> rtl8188e_iol_efuse_patch [ 596.192262] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready root@ATK-IMX6U:~# iwlist wlan0 scan wlan0 Scan completed : Cell 01 - Address: 0C:72:2C:FD:2E:BD ESSID:"TP-LINK_2.4GHz_FD2EBD" Protocol:IEEE 802.11bgn Mode:Master Frequency:2.437 GHz (Channel 6) Encryption key:on Bit Rates:300 Mb/s Extra:wpa_ie=dd160050f20101000050f20401000050f20401000050f202 IE: WPA Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK Extra: IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK IE: Unknown: DD940050F204104A0001101044000102103B0001031047001019679A75CA6B508686663B369BF4B3E21021000754502D4C494E4B1023000A544C2D5744523735303010240003322E301042000A313233343536373839301054000800060050F20400011011001A576972656C65737320526F7574657220544C2D57445237353030100800022008103C0001031049000600372A000120 Quality=48/100 Signal level=74/100 Extra:fm=0003扫描结果，热点名字:"TP-LINK_2.4GHz_FD2EBD"可以连接。连接需要使用wpa_supplicant工具。 wps_supplicant移植 openssl工具移植源码 openssl-1.1.1d.tar.gz tar -vxzf openssl-1.1.1d.tar.gz在openssl文件夹下执行配置文件 ./Configure linux-armv4 shared no-asm --prefix=/home/wy/imx6ull/tools/openssl CROSS_COMPILE=arm-linux-gnueabihf-prefix:安装的目录 make make install将/home/wy/imx6ull/tools/openssl/lib文件夹下的 libcrypto 和 libssl 库，拷贝到开发版/lib中 cp libcrypto.so* /lib/ -af cp libssl.so* /lib/ -af libnl库移植源码 libnl-3.2.23.tar.gz 先安装 biosn 和 flex sudo apt-get install bison sudo apt-get install flex源码文件libnl-3.2.23.tar.gz tar -vxzf libnl-3.2.23.tar.gz执行配置文件 ./configure --host=arm-linux-gnueabihf --prefix=/home/wy/imx6ull/tools/libnl/拷贝生成的/home/wy/imx6ull/tools/libnl/lib目录到开发版/usr/lib目录下 o cp lib/* /usr/lib/ -rf wpa_supplicant移植源码 wpa_supplicant-2.7.tar.gz tar -vxzf wpa_supplicant-2.7.tar.gz进入解压后的文件，进入wpa_supplicant子文件夹 要将 wpa_supplicant 下的 defconfig 文件拷贝一份并重命名为.config并进入配置 #openssl库文件和头文件 CFLAGS += -I/home/wy/imx6ull/tools/openssl/include LIBS += -L/home/wy/imx6ull/tools/openssl/lib -lssl -lcrypto #libnl库文件和头文件 CFLAGS += -I/home/wy/imx6ull/tools/libnl/include/libnl3 LIBS += -L/home/wy/imx6ull/tools/libnl/lib CC=arm-linux-gnueabihf-gcc到出环境变量PKG_CONFIG_PATH export PKG_CONFIG_PATH=/home/wy/imx6ull/tools/libnl/lib/pkgconfig编译 make -j12目录下会生成wpa-supplicant 和 wpa_cli两个可执行文件，复制到开发版/usr/bin目录下 开发板下，查看wpa_supplicant 版本 root@ATK-IMX6U:~# wpa_supplicant -v wpa_supplicant v2.7 Copyright (c) 2003-2018, Jouni Malinen and contributors在/etc目录下新建 “wpa_supplicant.conf”的配置文件, 设置网络名ssid，和密码psk ctrl_interface=/var/run/wpa_supplicant ap_scan=1 network={ ssid="TP-LINK_2.4GHz_FD2EBD" psk="15869151017" }创建一个新的目录 mkdir /var/run/wpa_supplicant -p测试上网功能 wpa_supplicant -D wext -c /etc/wpa_supplicant.conf -i wlan0 & [ 2065.431974] RTL871X: set bssid:00:00:00:00:00:00 ioctl[SIOCSIWAP]: Operation not p[ 2065.438524] RTL871X: set ssid [p▒>▒A▒▒g>~▒▒▒k▒▒8\*▒;▒2▒ |
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