The D-Link DWA-131 WiFi dongle is not supported out of the box on Raspbian, a compilation is required.
You have two options : Compile on the Pi or cross-compile on a other machine. I prefer to cross-compile as it’s faster and easier : you avoid to install the compilation tools and download huge sources on a small SD card…
1. Step1 : On the Raspberry Pi
1.1. Dongle information
>lsusb Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. Bus 001 Device 004: ID 2001:3319 D-Link Corp.
1.2. Information needed
Get the firmware hash:
FIRMWARE_HASH=$(zgrep "* firmware as of" /usr/share/doc/raspberrypi-bootloader/changelog.Debian.gz | head -1 | awk '{ print $5 }')
Print it :
echo $FIRMWARE_HASH
Result :
3442862c10fab68c2e88d660d2e69c143bb1f00c
Get the kernel hash:
KERNEL_HASH=$(wget https://raw.github.com/raspberrypi/firmware/$FIRMWARE_HASH/extra/git_hash -O -)
Print it :
echo $KERNEL_HASH
Result :
ca312f557513e057c456598528e663fe9d009498
We need to load the configs module to be able to retrieve the configuration later on:
sudo modprobe configs
And finally your Kernel version :
uname -r
Result :
4.1.17+
Copy paste these information somewhere in a text file, we’ll use it later on.
2. Step 2 : On the compilation server
2.1. Preparation
Prepare a folder to work in :
mkdir ~/raspberrypi export BASEDIR=~/raspberrypi cd $BASEDIR
Create variables based on what we found earlier :
FIRMWARE_HASH=3442862c10fab68c2e88d660d2e69c143bb1f00c KERNEL_HASH=ca312f557513e057c456598528e663fe9d009498
2.2. Kernel source
Download and extract the kernel source :
wget https://github.com/raspberrypi/linux/archive/$KERNEL_HASH.tar.gz tar -xzf $KERNEL_HASH.tar.gz export KERNEL_SRC=$BASEDIR/linux-$KERNEL_HASH
2.3. Kernel configuration
Download the configuration from the raspberry pi. The IP should be the IP of the raspberry pi :
scp pi@192.168.137.250:/proc/config.gz .
2.4. Compilation tools
Download the compilation tools :
cd $BASEDIR git clone git://github.com/raspberrypi/tools.git export CCDIR=$BASEDIR/tools/arm-bcm2708/arm-bcm2708-linux-gnueabi/bin export CCPREFIX=$CCDIR/arm-bcm2708-linux-gnueabi-
2.5. Kernel preparation
Prepare the Kernel source :
cd $KERNEL_SRC
zcat $BASEDIR/config.gz > .config
wget https://raw.githubusercontent.com/raspberrypi/firmware/$FIRMWARE_HASH/extra/Module.symvers
ARCH=arm CROSS_COMPILE=${CCPREFIX} make oldconfig
ARCH=arm CROSS_COMPILE=${CCPREFIX} make prepare
2.6. Driver source
Download the driver source :
cd $BASEDIR git clone https://github.com/romcyncynatus/rtl8192eu.git cd rtl8192eu/
2.7. Driver compilation
Compilation :
make ARCH=arm CROSS_COMPILE=$CCPREFIX KVER=4.1.17+ KSRC=$KERNEL_SRC
First error :
make[1]: Entering directory '/home/ron/raspberrypi/linux-ca312f557513e057c456598528e663fe9d009498' CC [M] /home/ron/raspberrypi/rtl8192eu/core/rtw_cmd.o cc1: error: -Werror=date-time: no option -Wdate-time scripts/Makefile.build:258: recipe for target '/home/ron/raspberrypi/rtl8192eu/core/rtw_cmd.o' failed make[2]: *** [/home/ron/raspberrypi/rtl8192eu/core/rtw_cmd.o] Error 1 Makefile:1384: recipe for target '_module_/home/ron/raspberrypi/rtl8192eu' failed make[1]: *** [_module_/home/ron/raspberrypi/rtl8192eu] Error 2 make[1]: Leaving directory '/home/ron/raspberrypi/linux-ca312f557513e057c456598528e663fe9d009498' Makefile:1455: recipe for target 'modules' failed make: *** [modules] Error 2
Edit the Makefile :
vi $BASEDIR/rtl8192eu/Makefile
Change the following line :
EXTRA_CFLAGS += -Wno-error=date-time
By :
#EXTRA_CFLAGS += -Wno-error=date-time
Second error :
CC [M] /home/ron/raspberrypi/rtl8192eu/os_dep/linux/rtw_android.o /home/ron/raspberrypi/rtl8192eu/os_dep/linux/rtw_android.c: In function 'rtw_android_cmdstr_to_num': /home/ron/raspberrypi/rtl8192eu/os_dep/linux/rtw_android.c:345:3: error: implicit declaration of function 'strnicmp' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors scripts/Makefile.build:258: recipe for target '/home/ron/raspberrypi/rtl8192eu/os_dep/linux/rtw_android.o' failed make[2]: *** [/home/ron/raspberrypi/rtl8192eu/os_dep/linux/rtw_android.o] Error 1 Makefile:1384: recipe for target '_module_/home/ron/raspberrypi/rtl8192eu' failed make[1]: *** [_module_/home/ron/raspberrypi/rtl8192eu] Error 2 make[1]: Leaving directory '/home/ron/raspberrypi/linux-ca312f557513e057c456598528e663fe9d009498' Makefile:1455: recipe for target 'modules' failed make: *** [modules] Error 2
Edit the rtw_android.c:
vi $BASEDIR/rtl8192eu/os_dep/linux/rtw_android.c
Change the following line :
if(0 == strnicmp(cmdstr , android_wifi_cmd_str[cmd_num], strlen(android_wifi_cmd_str[cmd_num])) )
By :
if(0 == strncasecmp(cmdstr , android_wifi_cmd_str[cmd_num], strlen(android_wifi_cmd_str[cmd_num])) )
The compilation should be fine now !
2.8. Driver transfer
We’ll use SCP to copy the module (8192eu.ko) on our Raspberry. The IP used here is the Raspberry Pi’s.
scp 8192eu.ko pi@192.168.137.250:~
2. Step 3 : On the Raspberry Pi
After the transfer, the compiled driver should be in your home folder.
Activation :
sudo bash -c 'echo "options 8192eu rtw_power_mgnt=0 rtw_enusbss=0">/etc/modprobe.d/8192eu.conf' sudo install -p -m 644 8192eu.ko /lib/modules/4.1.17+/kernel/drivers/net/wireless sudo depmod 4.1.17+
Reboot:
sudo reboot
After a reboot, the module is loaded
>modinfo 8192eu filename: /lib/modules/4.1.17+/kernel/drivers/net/wireless/8192eu.ko version: v4.3.8_12406.20140929 author: Realtek Semiconductor Corp. description: Realtek Wireless Lan Driver license: GPL srcversion: AFD4F17337FAE61BE3C568D alias: usb:v2001p3319d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0BDAp818Cd*dc*dsc*dp*icFFiscFFipFFin* alias: usb:v0BDAp818Bd*dc*dsc*dp*icFFiscFFipFFin*
And WiFi available :
wlan0 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX
inet addr:192.168.1.25 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::5326:231f:6f24:cb1c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11598 errors:0 dropped:9 overruns:0 frame:0
TX packets:209 errors:0 dropped:1 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1841333 (1.7 MiB) TX bytes:26125 (25.5 KiB)