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toh:asus:rt-n16 [2013/02/10 06:03]
toh:asus:rt-n16 [2014/11/10 17:23] (current)
laska
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====== Asus RT-N16 ====== ====== Asus RT-N16 ======
- +The Asus RT-N16 is a middle class router from 2010 with gigabit ethernet and 802.11n draft. It is based on the Broadcom [[doc/hardware/soc/soc.broadcom.bcm47xx|BCM47xx]] SoC platform.
- +
-| {{:meta:icons:tango:48px-dialog-warning.svg.png?nolink}} | The Asus RT-N16 has early support in Barrier Breaker (trunk) only!  | +
- +
-  * [[https://dev.openwrt.org/ticket/6580|Ticket 6580]] tracks the effort to support this device. +
-  * [[https://forum.openwrt.org/viewtopic.php?id=33560|Curent forum thread]] for the latest info  +
-  * [[http://www.znau.edu.ua/temp/asus-rt-n16/openwrt-bcm4716-README.txt|George Kashperko's patches]] to get the N16 working on trunk+
===== Supported Versions ===== ===== Supported Versions =====
^ Version/Model ^ S/N ^ OpenWrt Version Supported ^ Model Specific Notes ^ ^ Version/Model ^ S/N ^ OpenWrt Version Supported ^ Model Specific Notes ^
-| 1.2 | - | Barrier Breaker (r35318?), WIP | [[http://openwrt.razvi.ro/|Unofficial Builds]] |+| 1.2 | - | Barrier Breaker 14.07 | mips74k firmware image is \\ recommended for better performance | 
 + 
 +**Note:** The wireless works fine both with b43 and brcmsmac kernel modules. By default b43 module is used. If you plan to use 802.11-n capable brcmsmac module instead you should: 
 +  * remove kmod-b43 package, 
 +  * install kmod-brcmsmac package, 
 +  * delete /etc/config/wireless file 
 +  * reboot 
===== Hardware Highlights ===== ===== Hardware Highlights =====
-^ CPU ^ Ram ^ Flash ^ Network ^ USB ^ Serial ^ JTag ^ +^ CPU ^ Ram ^ Flash ^ Network ^ Gigabit ^ USB ^ Serial ^ JTag ^ 
-| BCM4718 @ 480MHz | 128MiB | 32MiB | 5 x 1| Yes | Yes | Yes |+| BCM4718 @ 480MHz | 128MiB | 32MiB | 4 + 1| Yes | Yes | Yes | Yes | 
 + 
 +===== Current OpenWrt's Firmware Status ===== 
 +The Barrier Breaker release have almost full support of Asus RT-N16. The following is a list of everything that needs polish in order to update this device's status to 'fully supported'. 
 + 
 +  * Like for most wireless solutions based on BCM4718, it uses the reverse engineered b43 driver by default. With this driver only 802.11g is supported, but you can easily get wireless 802.11n working by installing the Broadcom open source brcmsmac driver. Alternatively, for more functionality like 40Mhz bandwidth you can use the closed source STA drivers, broadcom-wl. Advanced WiFi configurations have to be done via the wl utility however. For installation, refer to [[doc/hardware/soc/soc.broadcom.bcm47xx#wifi.drivers|the bcm47xx platform's page]]. 
 +  * There are reports that the generic firmware is not accepted by the ASUS web interface, but it may work with TFTP. Thus a build is required that is tagged with a header such that it is accepted. A patch should be created for OpenWrt, adding support for generating a proper Asus firmware. 
 +  * The reset button works only to take you to Asus's failsafe mode. Clearing NVRAM is done with the button labelled by WPS. The 'real' reset button can also put the router in OpenWrt recovery mode, see [[toh/asus/rt-n16#failsafe.mode]].
===== Installation ===== ===== Installation =====
 +
 +==== Choosing the right image ====
 +=== Barrier_breaker (14.07) ===
 +The RT-N16 is supported by several targets:
 +  *[[http://downloads.openwrt.org/barrier_breaker/14.07/brcm47xx/legacy/openwrt-brcm47xx-legacy-squashfs-gz.trx|brcm47xx/legacy]]
 +    * quite slow as optimized for older router like ASUS WL-500gP
 +    * uses kmod-b44 instead of kmod-bgmac for ethernet by default, so you'll need to remove kmod-b44 and install kmod-bgmac
 +  *[[http://downloads.openwrt.org/barrier_breaker/14.07/brcm47xx/generic/openwrt-brcm47xx-generic-squashfs-gz.trx|brcm47xx/generic]]
 +    * generic target
 +    * uses kmod-ath5k/9k modules by default for wifi, so you'll need install kmod-b43, kmod-brcmsmac or kmod-wl to get wifi working
 +  *[[http://downloads.openwrt.org/barrier_breaker/14.07/brcm47xx/mips74k/openwrt-brcm47xx-mips74k-squashfs.trx|brcm47xx/mips74k]]
 +    * faster then previous
 +    * uses kmod-b43 module by default for wifi, so you may need to install kmod-brcmsmac or kmod-wl to get 802.11n working
 +
 +===== Install from ddwrt ====
 +
 + this is how i installed it from ddwrt ssh session:
 +
 +|''cat /proc/mtd''|
 +
 + make sure linux is on there then,
 +
 +|''cd /tmp
 +wget http://downloads.openwrt.org/barrier_breaker/14.07/brcm47xx/mips74k/openwrt-brcm47xx-mips74k-squashfs.trx
 +mtd -r write openwrt-brcm47xx-mips74k-squashfs.trx
 + linux''|
 +
 + after router reboots, you should be able to web interface or telnet to 192.168.1.1 and go from there.
 +
 +you may want to remove kmod-b43 package and install kmod-brcmsmac to get 802.11n support
 +
==== Flash Layout ==== ==== Flash Layout ====
->[[doc:techref:flash.layout]] for a detailed explanations. ->[[doc:techref:flash.layout]] for a detailed explanations.
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==== OEM easy installation ==== ==== OEM easy installation ====
 +Note that (at least for some version of the Asus firmware) the generic OpenWrt builds are not accepted by the ASUS web interface. Hence, there is a need for a special build for initial flashing. A patch still needs to be made for this but it is not worked on as of yet. Until then, you can either use the methods below, or use the [[http://www.dd-wrt.com/wiki/index.php/Asus_RT-N16|DD-WRT]] file for initial flashing and then flash OpenWrt through the DD-WRT web interface.
The page at [[wl500gp]] has detailed backup, flash, & recovery information which should largely apply to the RT-N16 as well. The page at [[wl500gp]] has detailed backup, flash, & recovery information which should largely apply to the RT-N16 as well.
==== OEM installation using the TFTP method ==== ==== OEM installation using the TFTP method ====
-Flash from a PC using the Firmware Restoration utility.  +=== From Windows === 
 +Flash from a Windows PC using the Firmware Restoration utility.
(Download or install the Firmware Restoration  Utility to your PC.) (Download or install the Firmware Restoration  Utility to your PC.)
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To launch the recovery mode disconnect power from the router first. To launch the recovery mode disconnect power from the router first.
-Press the WPS - Button approx. 3-5 seconds after you replugged the power.   +Hold the WPS button while replugged the power to the router to reset nvram, router will restart 2x. 
-The power LED should start to blink (low frequency). Retry if that won't work for you. +Hold the RESET button while replugged the power to the router to get into recovery mode : tftpd is listening. 
 +The power LED should start to blink (low frequency, ~1 time every 3 seconds). Retry if that won't work for you.
-The router IP in the recovery mode is 192.168.1.1 255.255.255.0. +The router IP in the recovery mode is 192.168.1.1 255.255.255.0.
Configure your PC (don't use 192.168.1.1)  Configure your PC (don't use 192.168.1.1) 
-|''netsh interface ip set adress name="Local Area Connection" static 192.168.1.2 255.255.255.0''|+|''netsh interface ip set address name="Local Area Connection" static 192.168.1.2 255.255.255.0''|
Ping 192.168.1.1 should give a response. Ping 192.168.1.1 should give a response.
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Reconfigure your PC back to DHCP Reconfigure your PC back to DHCP
-|''netsh interface ip set adress name="Local Area Connection" source=dhcp''|+|''netsh interface ip set address name="Local Area Connection" source=dhcp''|
-Connect to http://opwnwrt.lan and proceed with the basic configuration. +Connect to http://openwrt.lan and proceed with the basic configuration.
This may work with other tftp utilities, too. This may work with other tftp utilities, too.
-==== Upgrading OpenWrt ====+=== From Linux ===
-=== LuCI Web Upgrade Process ===+The Asus RT-N16 has a failover mode, like the DIR-600 Bx (X=1,2). 
 + 
 +Get a tftp client,  Since Ubuntu is a popular choice snag it : 
 +|''sudo apt-get install tftp''| 
 + 
 +Now to modify the router ... 
 +To launch the recovery mode disconnect power from the router first.  
 + 
 +1. Hold the WPS button for 10 seconds while replugged the power to the router to reset nvram, router will restart 2x when you release. 
 +2. Hold the RESET button while replugged the power to the router to get into recovery mode :  tftpd is listening. 
 + The power LED should start to blink (low frequency, ~1 time every 3 seconds). Retry if that won't work for you. 
 + 
 +The router IP in the recovery mode is 192.168.1.1 255.255.255.0. 
 + 
 +Configure your box to use an ip in the same range : 192.168.1.2 is usually good. 
 + 
 +|''sudo ifconfig eth0 192.168.1.2''| 
 + 
 +Ping the interface to be sure it's up : 
 + 
 +|''ping 192.168.1.1''| 
 + 
 +Ctrl+C to break. 
 + 
 +If you get ping responses then it's up and ready to flash. 
 + 
 +|''tftp 192.168.1.1''| 
 + 
 +Set it to binary mode transfer : 
 +|''mode binary''| 
 + 
 +upload the firmware : 
 +|''put openwrt-brcm47xx-squashfs.trx''| 
 + 
 +When it's complete the router will be writing the firmwar and may not automatically reboot.  Wait up to 5 minutes, then power off the router and plug it back in. 
 + 
 +===== Upgrading OpenWrt ===== 
 + 
 +==== LuCI Web Upgrade Process ====
-/*  *Browse to http://192.168.1.1/cgi-bin/luci/mini/system/upgrade/ LuCI Upgrade URL+/*  *Browse to System>Backup/Flash Firmware page in the LuCI web interface
  *Upload file xxx to LuCI   *Upload file xxx to LuCI
  *Wait for reboot  */   *Wait for reboot  */
-=== Terminal Upgrade Process ===+==== Terminal Upgrade Process ====
/* /*
  *Login as root via SSH on 192.168.1.1   *Login as root via SSH on 192.168.1.1
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| LAN 4 | 1 | | LAN 4 | 1 |
-==== Failsafe mode ==== +===== Failsafe mode ===== 
-If you forgot your password, broken one of the startup scripts, firewalled yourself or corrupted the JFFS2 partition, you can get back in by using OpenWrt's failsafe mode.+If you forgot your password, broken one of the startup scripts, firewalled yourself or corrupted the JFFS2 partition, you can get back in by using OpenWrt's failsafe mode. If you are unsuccesful solving the problem with OpenWrt's failsafe mode, i.e. you have bricked the device, you can use Asus's failsafe mode to flash a new image.
-=== Boot into failsafe mode ===+==== OpenWrt Failsafe Mode ==== 
 +Follow these steps to boot into the OpenWrt failsafe mode:
  * Unplug the router's power cord.   * Unplug the router's power cord.
  * Connect the router's LAN1 port directly to your PC.   * Connect the router's LAN1 port directly to your PC.
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**NOTE:** The root file system in failsafe mode is the SquashFS partition mounted in readonly mode. To switch to the normal writable root file system run mount_root and make any changes. Run mount_root now. **NOTE:** The root file system in failsafe mode is the SquashFS partition mounted in readonly mode. To switch to the normal writable root file system run mount_root and make any changes. Run mount_root now.
-  - Forgot/lost your password and you like to set a new one +  * Forgot/lost your password and you like to set a new one by running:\\ ''passwd'' 
- passwd +  * Forgot the routers IP address. Retrieve it by running:\\ ''uci get network.lan.ipaddr'' 
-  - Forgot the routers IP address +  * You accidentally ran ''ipkg upgrade'' or filled up the flash by installing packages that are too big. In the latter case clean the JFFS2 partition and start over by running:\\ ''mtd -r erase rootfs_data'' 
- uci get network.lan.ipaddr + 
-  - You accidentally run 'ipkg upgrade' or filled up the flash by installing to big packages (clean the JFFS2 partition and start over+If you are done with failsafe mode power cycle the router to boot in normal mode. 
- mtd -r erase rootfs_data + 
-If you are done with failsafe mode power cycle the router and boot in normal mode.+==== Asus Recovery Mode ==== 
 +Since this is an Asus product you can also use the failsafe mode (included in the boot loader). Press and hold the "Reset" button on the back of the device, then plug it in. When the 'PWR' light blinks slowly then it is listening in TFTP mode (~ once every 3 seconds). The default address is 192.168.1.1. If this is not pingable, do the NVRAM reset first, described as follows. 
 + 
 +To reset the NVRAM, hold the "WPS" button and plug in the router.  When the 'PWR' light is blinking quickly, then when you let go of the WPS button, the router will perform a reboot, wipe and reboot again. Note that clearing NVRAM does not clear much of OpenWrt's configuration, unlike other router software which keep configuration data in NVRAM. Since OpenWrt's configuration is kept in the main JFFS file system, using UCI configuration files, if you cannot boot normally you can reset or change this with OpenWrt's failsafe mode. See also [[doc/techref/flash.layout]]. 
 + 
 + 
 +===== Compiling From Source ===== 
 +If you want to compile  
 +Target System (Broadcom BCM947xx/953xx) 
 +Target Profile (Broadcom SoC, all Ethernet, BCM43xx WiFi (wl, proprietary)) 
 + 
 +For Barrier Breaker: 
 +Target System (Broadcom BCM47xx/53xx (MIPS)), 
 +Subtarget (MIPS 74K), 
 +Target Profile (Broadcom SoC, BCM43xx WiFi (proprietary wl)). 
 + 
 + 
 +===== Other ===== 
 + 
 +==== LEDs ==== 
 +Initially WLAN LED is not triggered by Wi-Fi driver. 
 +Edit /etc/config/system to enable it (tested with brcmsmac): 
 + 
 +<code> 
 +config led wlan_led 
 +        option name 'WLAN' 
 +        option sysfs 'bcm47xx:blue:wlan' 
 +        option trigger 'netdev' 
 +        option dev 'wlan0' 
 +        option mode 'link tx rx' 
 +</code>
==== Buttons ==== ==== Buttons ====
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==== Serial ==== ==== Serial ====
-How to connect to Serial Port+How to connect to Serial Port
 + 
 +You will need a TTL device to connect.  These are available cheaply online from many different retailers.  I picked up mine here : 
 + 
 +[[http://www.ebay.com/itm/251082091781?ssPageName=STRK:MEWNX:IT]] 
 + 
 +a PL2303 USB To RS232 TTL Converter Adapter Module. 
 + 
 +This exposes a serial device to OS via USB.  Connection should be made to the header on the RT-N16 matching RX->TX and TX->RX.  Connect GND to GND.  Then open up a terminal application, like PuTTY, and connect with 15200 baud, with 8 bits of data, no parity (8N1).  Connecting VCC doesn't hurt. 
 + 
 +This is recognized in WinXP, Win 7 and Linux (Ubuntu 11.10 checked). 
 + 
 +For connection in windows, use PuTTY.  Find the COM port by using Device Manager to see where it has been assigned. 
 + 
 +For connection in Linux : review serial pages for the connection.
==== JTAG ==== ==== JTAG ====
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*/ */
-===== Hardware mods =====+==== Hardware mods ==== 
 +There have been attempts to use the PCIe interface. See http://linux-mips-org.10913.n7.nabble.com/Re-brcm4716-and-PCIe-td56191.html  
 +http://wiki.openwrt.org/_media/inbox/rt-n16_back_hires.jpg 
 + 
 +==== Fixing Bad Capacitors ==== 
 + 
 +After unplugging and replugging the router's power it became unresponsive, even the LEDs were not lightning up. I opened the router to find a capacitor near the power supply (most likely a filter cap) which seemed slightly popped. The capacitor was a 680uF 16V. I didn't have any capacitor with the same specs at hand, so I replaced it with a capacitor with higher voltage/capacity ratings (1000uF 25V). After replacing the capacitor the router started working and the router configurations were still intact. 
 + 
 +{{:media:rtn16_bad_cap.png?300|Bad Cap}} 
 +{{:media:rtn16_cap_mod_by_nc.png?640|New Cap}} 
 + 
===== Other Info ===== ===== Other Info =====
-  * ASUS factory firmware and sources available from [[ftp://ftp.asus.com/pub/ASUS/wireless/RT-N16/]]+  * ASUS factory firmware and sources available from [[http://support.asus.com/download.aspx?SLanguage=en&p=11&m=RT-N16|ASUS support]] (choose OS "Others") 
  * [[http://dev.debwrt.net/wiki/AsusRT-N16|RT-N16 DebWrt wiki page]]   * [[http://dev.debwrt.net/wiki/AsusRT-N16|RT-N16 DebWrt wiki page]]
-  * [[http://www.techinfodepot.info/index.php/Asus_RT-N16|Tech Info Depot Wiki]]+  * [[http://www.techinfodepot.info/wiki/Asus_RT-N16|Tech Info Depot Wiki]] 
 +  * [[http://wikidevi.com/wiki/ASUS_RT-N16| WikiDevi]] 
 + 
 +Development information: 
 +  * [[https://forum.openwrt.org/viewtopic.php?id=33560|Forum thread]] for the latest info 
 +  * [[http://www.znau.edu.ua/temp/asus-rt-n16/openwrt-bcm4716-README.txt|George Kashperko's patches]] which were used to get the N16 working  
===== Tags ===== ===== Tags =====
For some Help with the Tags, please have a look here: [[meta/tags]] For some Help with the Tags, please have a look here: [[meta/tags]]
-{{tag>GigabitEthernet USB 2USB 128RAM 32Flash MIPS 3Ant 802.11bgn bcm47xx 74k}}+{{tag>GigabitEthernet USB 2USB 128RAM 32Flash MIPS 3Ant 802.11bgn bcm47xx bcm4718 74k}}
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