en:wb_xu4_shifter_shield [ODROID Wiki]

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====== WEATHER-BOARD with shifter shield on ODROID-XU4 ======

[[http://www.hardkernel.com/main/products/prdt_info.php?g_code=G143556253995|{{:en:weather_board:weatherboardshiftershield.jpg?400|}}]]

The WEATHER-BOARD can use one of three I2C buses on the SHIFTER-SHIELD.

{{:en:shiftershield:wb_xu4_shifter_shield.png?500|}}

====== Directly connecting WEATHER-BOARD to ODROID-XU4 ======

{{:en:weather_board:wb3_xu4_wire.png?500|}}
----

**H/W I2C(I2C-A)**
^  Kernel 3.10.y\\ (node name)  ^  Kernel 4.9.y\\ (node name)  ^  Net Name            ^  Export Number  ^  Description  ^
|  **/dev/i2c-4**<color #ed1c24>Red Highlighted Text</color>                   |  /dev/i2c-1                  |  GPB3[2](I2C_1.SDA)  |  209            |  SDA          |
|  :::                          |  :::                         |  GPB3[3](I2C_1.SCL)  |  210            |  SCL          |

**H/W I2C(I2C-B : HS-I2C)**
^  Kernel 3.10.y\\ (node name)  ^  Kernel 4.9.y\\ (node name)  ^  Net Name            ^  Export Number  ^  Description  ^
|  /dev/i2c-1                   |  /dev/i2c-5                  |  GPA2[2](I2C_5.SDA)  |  187            |  SDA          |
| :::                           | :::                          |  GPA2[3](I2C_5.SCL)  |  188            |  SCL          |

===== How to check WEATHER-BOARD with i2c-tools. =====

**Install i2c-tools pakage.**
  sudo apt-get install i2c-tools

**Weather board check command**
<code>
odroid@odroid:~$ sudo i2cdetect -y -r [i2c-dev node number]
</code>

<note warning>H/W I2C(I2C-B : HS-I2C) doesn't work with i2cdetect command on Kernel 3.10</note>

Weather board rev 0.1 output

<code>
odroid@odroid:~$ sudo i2cdetect -y -r 1

    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f                             
00:          -- -- -- -- -- -- -- -- -- -- -- -- --                             
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
40: 40 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
70: -- -- -- -- -- -- -- 77

odroid@odroid:~$ 
</code>


Weather board rev 0.2 output

<code>
odroid@odroid:~$ sudo i2cdetect -y -r 1

    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f                             
00:          -- -- -- -- -- -- -- -- -- -- -- -- --                             
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --                             
70: -- -- -- -- -- -- -- 76

odroid@odroid:~$ 
</code>


===== Pure C code =====
**Install git package**
<code>
odroid@odroid:~$ sudo apt-get install git
</code>

**Get the WEATHER-BOARD source code.**
<code>
odroid@odroid:~$ mkdir work
odroid@odroid:~$ cd work
odroid@odroid:~/work$ git clone https://github.com/hardkernel/WEATHER-BOARD.git
odroid@odroid:~/work$ cd WEATHER-BOARD/c_weather
odroid@odroid:~/work/WEATHER-BOARD/c_weather$ make
</code>

Check your I2C node first and run the program.

<code>
odroid@odroid:~/work/WEATHER-BOARD/c_weather$  sudo ./weather_board [i2c node name(default /dev/i2c-1)]
</code>

**If weather board is connected to I2C Channel-A (Kernel 4.9.y)**
<code>
odroid@odroid:~/work/WEATHER-BOARD/c_weather$  sudo ./weather_board /dev/i2c-1
</code>

{{:en:weather_board:print_wb.png?500|}}


===== WiringPi =====
** If you want to get the WEATHER-BOARD source code using wiringPi library. **
  git clone https://github.com/hardkernel/wiringPi
  cd wiringPi
  ./build
  
  git clone https://github.com/john1117/WEATHER-BOARD.git
  cd WEATHER-BOARD/c_weather/wiringPi
  make
  
  sudo ./weather_board [/dev/i2c-number]


===== for Android =====
Change the permissions for /dev/i2c-1 node.
<code>
shell@odroidxu3:/ $ su
root@odroidxu3:/ # mount -o rw,remount /
[ 2147.583574] [c6] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
root@odroidxu3:/ # vi /uevent.odroidxu3.rc
</code>

Add this line and must reboot system.
<code>
/dev/i2c-1                0666   system     system
</code>

source code
<code>
git clone https://github.com/codewalkerster/weatherboard
</code>

{{:en:screenshot_2016-05-10-01-38-48.png?600|}}