Differences

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--- en:odroid-ups2 [2016/03/21 16:49]
ruppi [ODROID-C1]
+++ en:odroid-ups2 [2016/04/21 13:20] (current)
joy.cho [ODROID-C1/C2]
@@ Line 125: / Line 125: @@
 The BAT_OK and AC_OK signals are used in the below simple shell script which runs in the background via crontab.
+<WRAP left round important 50%>
+Before using UPS2 on ODROID-C2, please check u-boot version. \\
+If the version of yours is the one before Mar 18 2016, update boot loader. \\
+You can find the guide how to check and update U-Boot in the end part of this wiki page. \\
+[ How to check and update U-Boot on ODROID-C2 ]
+</WRAP>
 ==== Auto shutdown Script ====
 This script checks the status of power and battery.\\
 Save the following code as ups2.sh in home directory.\\
-Note that this script can be used with U3 as well as C1 without modification.\\
+Note that this script can be used with U3 as well as C1/C2 without modification.\\
 <code>
 #!/bin/sh
@@ Line 186: / Line 193: @@
         if [ $retval -eq 0 ]
         then
-                echo "battery is low than 3.7V"
+                echo "battery is lower than 3.7V"
-                if test $MODEL = "ODROID-C2"
+                /sbin/shutdown -P 1
-                then
-                        /sbin/poweroff
-                else
-                        /sbin/shutdown -P 1
-                fi
         else
                 echo "battery is good"
@@ Line 338: / Line 339: @@
 [   88.211703] Restarting system.
 </code>
+===== How to check and update U-Boot on ODROID-C2 =====
+==== Linux ====
+== Check U-Boot Version ==
+If you have a USB-UART console, you can easily check the u-boot version using 'version' on u-boot stage. \\
+<code>
+Hit [Enter] key twice quickly during u-boot loading and enter 'ver' or 'version'.
+odroidc2# version
+U-Boot 2015.01-00089-gdfb8216 (Apr 09 2016 - 06:20:43)
+</code>
+Or you can check it after kernel booting on userspace using a simple shell script.
+<file sh getUbootVer.sh>
+#!/bin/sh
+# Sample shell script to check U-Boot version on Linux
+dd if=/dev/mmcblk0 of=/tmp/temp.bin bs=512 skip=97 count=1334 status=none
+grep -a -r -E -o ".{0,0}U-Boot 2015.01.{0,50}" /tmp/temp.bin | grep -a "("
+rm /tmp/temp.bin
+</file>
+<code>
+root@odroid64:~# vi getUbootVer.sh
+root@odroid64:~# sudo chmod a+x getUbootVer.sh
+root@odroid64:/home/odroid# ./getUbootVer.sh
+         U-Boot 2015.01-00089-gdfb8216 (Apr 09 2016 - 06:20:43)
+</code>
+== Update U-Boot ==
+If your U-Boot version is not the latest one, you can update it using apt-get command.
+<code>
+sudo apt-get install u-boot
+</code>
+==== Android ====
+== Check U-Boot Version ==
+If you have a USB-UART console, you can easily check the u-boot version using 'ver' on u-boot stage as described in the aforementioned Linux case. \\
+Or you can check it after kernel booting on userspace using the following simple shell script.
+<file sh getUbootVer.sh>
+#!/bin/sh
+# Sample shell script to check U-Boot version on Android
+/bin/dd if=/dev/block/mmcblk0 of=/data/temp.bin bs=512 skip=97 count=1334
+grep -a -r -E -o ".{0,0}U-Boot 2015.01.{0,50}" /data/temp.bin | grep -a "("
+rm /data/temp.bin
+</file>
+<code>
+(run Terminal Emulator)
+u0_a48@odroidc2:/ $ su
+root@odroidc2:/ # cd /data/
+root@odroidc2:/data # vi getUbootVer.sh
+root@odroidc2:/data # chmod 755 getUbootVer.sh
+root@odroidc2:/data # ./getUbootVer.sh
++0 records in
++0 records out
+bytes transferred in 0.014 secs (48786285 bytes/sec)
+/data/temp.bin:U-Boot 2015.01-00089-gdfb8216 (Apr 09 2016 - 06:20:43)
+root@odroidc2:/data #
+</code>
+== Update U-Boot ==
+If your U-Boot version is not the latest one, you can update it using Android update package. \\
+http://odroid.com/dokuwiki/doku.php?id=en:c2_release_android
 ===== Tip for servo or motor driving application =====