WEATHER-BOARD2 on ODROID-N2/C4
Requirements
Make sure that you have these products:
Wiring
For the wiring, you should wire a total of four lines, GND, 3V3, SCL and SDA.
The GND and 3V3 pin can be used like the following pin you want.
GND : 6, 9, 14, 20, 25, 34, 39
3V3 : 1, 17
ODROID-N2
J2 - 2x20 PINS
| Default Pin State | GPIO & Export No | Net Name | Pin Number | Pin Number | Net Name | GPIO & Export No | Default Pin State |
|---|---|---|---|---|---|---|---|
| - | - | 3.3V | 1 | 2 | 5.0V | - | - |
| I(P/D) | GPIOX.17 (#493) | I2C0_SDA | 3 | 4 | 5.0V | - | - |
| I(P/U) | GPIOX.18 (#494) | I2C0_SCL | 5 | 6 | GND | - | - |
| I(P/D) | GPIOA.13 (#473) | 7 | 8 | TXD1 | GPIOX.12 (#488) | I(P/U) | |
| - | - | GND | 9 | 10 | RXD1 | GPIOX.13 (#489) | I(P/U) |
| I(P/U) | GPIOX.3 (#479) | 11 | 12 | PWM_E | GPIOX.16 (#492) | I(P/U) | |
| I(P/U) | GPIOX.4 (#480) | 13 | 14 | GND | - | - | |
| I(P/U) | GPIOX.7 (#483) | PWM_F | 15 | 16 | GPIOX.0 (#476) | I(P/U) | |
| - | - | 3.3V | 17 | 18 | GPIOX.1 (#477) | I(P/U) | |
| I(P/U) | GPIOX.8 (#484) | SPI0_MOSI | 19 | 20 | GND | - | - |
| I(P/U) | GPIOX.9 (#485) | SPI0_MISO | 21 | 22 | GPIOX.2 (#478) | I(P/U) | |
| I(P/U) | GPIOX.11 (#487) | SPI0_CLK | 23 | 24 | SPI0_SS0 | GPIOX.10 (#486) | I(P/U) |
| - | - | GND | 25 | 26 | SPI0_SS1 | GPIOA.4 (#464) | I(P/D) |
| I(P/U) | GPIOA.14 (#474) | I2C1_SDA | 27 | 28 | I2C1_SCL | GPIOA.15 (#475) | I(P/U) |
| I(P/U) | GPIOX.14 (#490) | 29 | 30 | GND | - | - | |
| I(P/U) | GPIOX.15 (#491) | 31 | 32 | GPIOA.12 (#472) | I(P/D) | ||
| I(P/U) | GPIOX.5 (#481) | PWM_C | 33 | 34 | GND | - | - |
| I(P/D) | GPIOX.6 (#482) | PWM_D | 35 | 36 | GPIOX.19 (#495) | - | |
| ADC.AIN3 | 37 | 38 | REF 1.8V | ||||
| - | - | GND | 39 | 40 | ADC.AIN2 |
ODROID-C4
J2 - 2x20 PINS
| Default Pin State | GPIO & Export No | Net Name | Pin Number | Pin Number | Net Name | GPIO & Export No | Default Pin State |
|---|---|---|---|---|---|---|---|
| - | - | 3.3V | 1 | 2 | 5.0V | - | - |
| I(P/D) | GPIOX.17 (#493) | I2C0_SDA | 3 | 4 | 5.0V | - | - |
| I(P/U) | GPIOX.18 (#494) | I2C0_SCL | 5 | 6 | GND | - | - |
| I(P/D) | GPIOX.5 (#481) | 7 | 8 | TXD1 | GPIOX.12 (#488) | I(P/U) | |
| - | - | GND | 9 | 10 | RXD1 | GPIOX.13 (#489) | I(P/U) |
| I(P/U) | GPIOX.3 (#479) | 11 | 12 | PWM_E | GPIOX.16 (#492) | I(P/U) | |
| I(P/U) | GPIOX.4 (#480) | 13 | 14 | GND | - | - | |
| I(P/U) | GPIOX.7 (#483) | PWM_F | 15 | 16 | GPIOX.0 (#476) | I(P/U) | |
| - | - | 3.3V | 17 | 18 | GPIOX.1 (#477) | I(P/U) | |
| I(P/U) | GPIOX.8 (#484) | SPI0_MOSI | 19 | 20 | GND | - | - |
| I(P/U) | GPIOX.9 (#485) | SPI0_MISO | 21 | 22 | GPIOX.2 (#478) | I(P/U) | |
| I(P/U) | GPIOX.11 (#487) | SPI0_SCLK | 23 | 24 | SPI0_CS0 | GPIOX.10 (#486) | I(P/U) |
| - | - | GND | 25 | 26 | SPI0_CS1 | GPIOH.6 (#433) | I(P/D) |
| I(P/U) | GPIOA.14 (#474) | I2C1_SDA | 27 | 28 | I2C1_SCL | GPIOA.15 (#475) | I(P/U) |
| I(P/U) | GPIOX.14 (#490) | 29 | 30 | GND | - | - | |
| I(P/U) | GPIOX.15 (#491) | 31 | 32 | GPIOH.7 (#434) | I(P/D) | ||
| I(P/U) | GPIOX.6 (#482) | PWM_A | 33 | 34 | GND | - | - |
| I(P/D) | GPIOX.19 (#495) | PWM_B | 35 | 36 | GPIOH.5 (#432) | - | |
| ADC.AIN2 | 37 | 38 | REF 1.8V | ||||
| - | - | GND | 39 | 40 | ADC.AIN0 |
I2C-2
| Pin Number | Net Name | Export Number |
|---|---|---|
| 3 | I2C-2 SDA | 493 |
| 5 | I2C-2 SCL | 494 |
I2C-3
| Pin Number | Net Name | Export Number |
|---|---|---|
| 27 | I2C-3 SDA | 474 |
| 28 | I2C-3 SCL | 475 |
Download fritzing about the wiring
- ODROID-N2 part ☞ ODROID-N2 Fritzing part
- ODROID-C4 part ☞ ODROID-C4 Fritzing part
- WEATHER-BOARD2 part ☞ Weather-board2 Fritzing part
- Wiring parts ☞ wb2_n2.fzz
Check your slave devices of WEATHER-BOARD
- target
odroid@odroid:~$ sudo apt install i2c-tools odroid@odroid:~$ sudo i2cdetect -y -r 2 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- 76 --
or
- target
odroid@odroid:~$ sudo i2cdetect -y -r 3 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- 76 --
If you don't find any i2c node on “/dev/”, please check this I2C setting.
Setting the I2C on ODROID-N2
Downalod & run a example
Python
- target
$ sudo apt install python3-smbus $ git clone https://github.com/hardkernel/WEATHER-BOARD.git $ cd WEATHER-BOARD/python_weather
- target
$ sudo python3 weather_board.py /dev/i2c-2
or
- target
$ sudo python3 weather_board.py /dev/i2c-3
Pure C code
- target
$ sudo apt install git $ git clone https://github.com/hardkernel/WEATHER-BOARD.git $ cd WEATHER-BOARD/c_weather $ make
- target
$ sudo ./weather_board /dev/i2c-2
or
- target
$ sudo ./weather_board /dev/i2c-3
WiringPi
- target
$ git clone https://github.com/hardkernel/wiringPi $ cd wiringPi $ ./build $ git clone https://github.com/hardkernel/WEATHER-BOARD.git $ cd WEATHER-BOARD/c_weather/wiringPi $ make
- target
$ sudo ./weather_board /dev/i2c-2
or
- target
$ sudo ./weather_board /dev/i2c-3
luke.go