TP-Link wr941nd V3 USB Mod
By attaching usb in your router you can torrent in your router,setup NAS in your router,install software/packages in router and many more things
Things Required:
-
15k ohm resistor SMD, 2 Pieces
-
4.7k ohm resistor SMD, 1 Piece
-
22 ohms resistors SMD ,2 Pieces
-
USB female connector
-
Wires
-
Soldering iron and Solder
-
7805 voltage regulator (Optional, not needed if you can supply external 5volts to USB)
-
470uf 16v cap regulator ,2 Pieces (Optional. only needed if you are buying 7805)
-
Attach 4.7k ohm resistor as shown in figures
- Attach 15k ohm resistor as shown in figures
- Attach 22 ohms resistor as shown in figures
- USB connector and board connection
- 5volts for USB Connector
- My router pictures
Note: If your router version is 3 i.e. same as mine, you can use my firmware instead of going through whole compilation process
You should have Linux system, I used Ubuntu on VMware
Setup
Refer https://wiki.openwrt.org/doc/howto/buildroot.exigence
https://wiki.openwrt.org/doc/howto/build
Open Terminal and paste & press enter each one by one
sudo apt-get update
sudo apt-get install git-core build-essential libssl-dev libncurses5-dev unzip gawk zlib1g-dev
sudo apt-get install subversion mercurial quilt
sudo apt-get install asciidoc bash bc binutils bzip2 fastjar flex git-core gcc-c gcc util-linux gawk libgtk2.0-dev intltool jikespg zlib1g-dev make genisoimage libncurses5-dev libssl-dev patch perl-modules python2.6-dev rsync ruby sdcc unzip wget gettext xsltproc zlib1g-dev libboost1.55-dev libxml-parser-perl libusb-dev bin86 bcc sharutils openjdk-7-jdk
sudo apt-get install build-essential subversion git-core libncurses5-dev zlib1g-dev gawk flex quilt libssl-dev xsltproc libxml-parser-perl mercurial bzr ecj cvs unzip
sudo apt-get install build-essential subversion libncurses5-dev zlib1g-dev gawk gcc-multilib flex git-core gettext libssl-dev
git config --global http.postBuffer 1048576000
git clone https://github.com/openwrt/openwrt.git
cd openwrt
./scripts/feeds update -a
./scripts/feeds install -a
make menuconfig
Now choose the options and packages you want in the menu by pressing y or m
make V=s -j1
if there is error use above command again
Refer: https://wiki.openwrt.org/doc/devel/patches
Open new terminal and type
cat > ~/.quiltrc <<EOF
QUILT_DIFF_ARGS="--no-timestamps --no-index -p ab
--color=auto"
QUILT_REFRESH_ARGS="--no-timestamps --no-index -p
ab"
QUILT_PATCH_OPTS="--unified"
QUILT_DIFF_OPTS="-p"
EDITOR="nano"
EOF
cd openwrt
make target/linux/{clean,prepare} V=s QUILT=1
Now go to
openwrt/build_dir/target-mip-***/linux-ar71xx_generic/linux****/
And note down the link and use it in below command.
cd build_dir/target-mip-****/linux-ar71xx_generic/linux-****/
quilt push -a
Now go to openwrt/target/linux/ar71xx/patches****
And note down the last file number in my case 902
Now type
quilt new platform/903-add-usb-wr941nd-barrierbreaker.patch
Now you have to add the following changes using quilt edit
In arch/mips/ath79/Kconfig file
- Add
select ATH79_DEV_USB
Below
select ATH79_DEV_M25P80
In arch/mips/ath79/mach-tl-wr941nd.c
- Add
#include <linux/gpio.h>
below
#include <linux/platform_device.h>
- Add
#include "dev-usb.h"
below
#include "machtypes.h"
- Add
#define TL_WR941ND_GPIO_USB_POWER 6
below
#define TL_WR941ND_GPIO_BTN_QSS 7
- Add
static void __init tl_wr941nd_usb_setup(void)
{
/*
enable power for the USB port */
gpio_request(TL_WR941ND_GPIO_USB_POWER,
"USB power");
gpio_direction_output(TL_WR941ND_GPIO_USB_POWER,
1);
ath79_register_usb();
}
Below
.chip =
&tl_wr941nd_dsa_chip,
};
- Add
tl_wr941nd_usb_setup();
above
ath79_register_mdio(0, 0x0);
In /arch/mips/ath79/setup.c
- Add
ath79_pll_wr(0x08, 0x00001030);
below
ath79_detect_sys_type();
Refer Patch file to understand
Type
quilt edit arch/mips/ath79/Kconfig
and do the above changes and
do similar to other files using
quilt edit arch/mips/ath79/mach-tl-wr941nd.c
quilt edit /arch/mips/ath79/setup.c
When editing Choose easiest one ,the editor will get opened up,use Ctrl+alphabet to use the options given below.Edit the file,the way you want ,then press Ctrl+X(i.e Exit in options)
press y to save it and enter to save the file with name
After editing type
quilt diff
to see differences,type q at END
quilt refresh
Now the patch is saved at
openwrt/build_dir/target-mips****2/linux-ar71xx_generic/linux***/patches/platform
Open new terminal and type
cd openwrt
make target/linux/update V=s
make target/linux/{clean,prepare} V=s QUILT=1
If the above command throw error then you have to edit the patch again
Now go to openwrt/target/linux/ar71xx/patches-*** and check
if your patch is there not
If not there then go to openwrt/build_dir/target-mips****2/linux-ar71xx_generic/linux***/patches/platform
And copy your patch and paste it at openwrt/target/linux/ar71xx/patches-***
make clean
make V=s -j1
Done
You can find the firmware images at bin folder
Flash the firmware in your router and install packages related to usb such as block-mount
kmod-scsi-core
kmod-fs-ext4
kmod-usb-storage
kmod-usb-storage-extras
kmod-usb2
kmod-usb-uhci
kmod-usb-ohci
Now format your usb device as ext4 and attach to router
You can check whether usb is detected or not by seeing log.
It should show something like this
[ 7.200000] scsi
0:0:0:0: Direct-Access SanDisk Cruzer Edge 2.01 PQ: 0 ANSI: 6
[ 7.210000] sd
0:0:0:0: [sda] 15633408 512-byte logical blocks: (8.00 GB/7.45 GiB)
[ 7.230000] sd
0:0:0:0: [sda] Write Protect is off
[ 7.230000] sd
0:0:0:0: [sda] Mode Sense: 43 00 00 00
[ 7.240000] sd
0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO
or FUA
Now mount the usb as exroot to increase space
Refer https://wiki.openwrt.org/doc/howto/extroot
Refer openwrt docs for more information