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--- en:odroid-ups2 [2016/03/21 15:57]
ruppi [ODROID-C2]
+++ en:odroid-ups2 [2016/04/20 17:16]
joy.cho [ODROID-C1/C2]
@@ Line 96: / Line 96: @@
   - Detailed connection picture between JP1 of UPS2 and the 40pin header(**J2**) of ODROID-C1.
 |　C1|{{:en:ups2:odroid-c1_a_type_ups2-6_1..jpg?300|}}||UPS2|{{:en:ups2:odroid-c1_a_type_ups2-6_2.jpg?300|}}|
+Due to hardware limitations, in order to use the UPS2 on ODROID-C2\\
+  - Extract the blue cable of the 3-pin socket,\\
+  - Connect the 3-pin socket as shown in the figure above the 40 pin Header.\\
+The extracted lines connect the pin #26 of the 40 pin header as shown below.\\
+{{:en:connection_ups2_for_odroidc2.png?400|}}
-===== ODROID-C2 =====
-  - Detailed connection picture between JP1 of UPS2 and the 40pin header(**J2**) of ODROID-C2.
 ====== ODROID safe shutdown in the event of a power outage =====
@@ Line 107: / Line 113: @@
 The BAT_OK signal is connected to GPIO #199.\\
-==== ODROID-C1 ====
+==== ODROID-C1/C2 ====
-The AC_OK signal is connected to PIN#11(GPIO #88) in the 40pin header(**J2**) of ODROID-C1.\\
+The AC_OK signal is connected to PIN#11(GPIO #88) in the 40pin header(**J2**) of ODROID-C1/C2.\\
 The BAT_OK signal is connected to PIN#13(GPIO #116).\\
-The POWER_LATCH signal is connected to PIN#15(GPIO #115).\\
+The POWER_LATCH signal is connected to PIN#15(GPIO #115) of ODROID-C1.\\
+The POWER_LATCH signal is connected to PIN#26(GPIO #225) of ODROID-C2.\\
 **The BAT_OK pin is high when the battery voltage is higher than 3.7V.\\
@@ Line 117: / Line 124: @@
 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 UPS3 on ODROID-C2, please check u-boot version. \\
+If the version of yours is the one before Mar 18 2016, update boot loader.
+</WRAP>
+=== Check U-Boot Version on C2 ===
+If you have a USB-UART console, you can easily check the u-boot version using 'ver' 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
+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 on C2 ===
+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>
 ==== 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 179: / Line 224: @@
         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"