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inbox:airties-wav281 [2013/02/18 13:50]
inbox:airties-wav281 [2014/06/01 19:57] (current)
uwekamper
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===== JTAG ===== ===== JTAG =====
-Not needed, you can recover it via serial. you need to change...+Not needed, you can recover it via serial. See [[airties-wav281#Restore Uboot]]
====== specific configuration ====== ====== specific configuration ======
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==== Boot into failsafe mode ==== ==== Boot into failsafe mode ====
 +The failsafe mode is only available via the serial connection with OpenWrt 12.09 (Codename "Attitude Adjustment").
 +
 +
 +Later versions might work but I did not test that, yet. There are 3 different buttons: "WPS", "WLAN on/off" and "RESET" which might trigger the failsafe mode in the later versions. If you press and hold the
 +reset button when you switch the device on, then the uboot bootloader will go into failsafe mode and will make web server available under http://192.168.1.1/ (see below). If you want the OpenWrt failsafe mode (and not the uboot bootloader fail-safe mode) then you need to wait 4-5 seconds before you press and hold the reset button.
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-==== UART U-Boot ==== +===== Restore uboot ===== 
-If you bricked your uboot you can load a functional one via uart. For that you need to bridge r64 (top) and r80 (bottom) with some solder. After that the soc boots up in UART mode and you can transfer your [[http://downloads.openwrt.org/attitude_adjustment/12.09-rc1/lantiq/danube/uboot-lantiq-arv4520PW_ramboot/u-boot.asc|u-boot.asc]] through a serial connection:+ 
 +If you bricked your uboot you can load a functional one via uart. For that you need to bridge r64 (top) and r80 (bottom) with some solder. After that the soc boots up in UART mode. You can verfy that you are in UART-Mode if after powering up the device it writes the follwoing on the serial: 
 +   
 +  ROM VER: 1.0.3 
 +  CFG 04 
 +  Read EEPROMX 
 +  X 
 +  UART 
 + 
 + 
 +Now you can transfer your [[http://downloads.openwrt.org/attitude_adjustment/12.09-rc1/lantiq/danube/uboot-lantiq-arv4520PW_ramboot/u-boot.asc|u-boot.asc]] through a serial connection:
  cat u-boot.asc > /dev/ttyUSB0   cat u-boot.asc > /dev/ttyUSB0
 +There exist quite a few more Modes, that are accesible through briding empty pads as shown in this [[ http://thread.gmane.org/gmane.comp.embedded.openwrt.devel/17762|thread]]. But none other than default and UART-Mode seems to be usefull.
===== Buttons ===== ===== Buttons =====
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--------------------------------------- ---------------------------------------
</code> </code>
 +
 +
 +===== Tags =====
 +{{tag>lantiq danube adsl2+}}

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inbox/airties-wav281.1361191811.txt.bz2 · Last modified: 2013/02/18 13:50 (external edit)