en:xu3_hardware_gpio [ODROID Wiki]

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====== Expansion Connectors ======
The Odroid-XU4/3 povides one 30-pin dual row expansion header "**CON10**".
The location and pinout of these connectors is illustrated blew. All signals on expansion headers are 1.8V except PWRON signal.
----
**CON10 - 2x15 pins**
^ Pin Number ^ Net Name     ^ GPIO & Export No     ^ Pin Number ^ Net Name     ^ GPIO & Export No    ^
| 1          | 5V0          |                      | 2          | GND          |                     |
| 3          | ADC_0.AIN0   | XADC0AIN_0           | 4          | UART_0.RTSN  | GPA0.2 (#173)       |
| 5          | UART_0.CTSN  | GPA0.3 (#174)        | 6          | UART_0.RXD   | GPA0.0 (#171)       |
| 7          | SPI_1.MOISI  | GPA2.7 (#192)        | 8          | UART_0.TXD   | GPA0.1 (#172)       |
| 9          | SPI_1.MISO   | GPA2.6 (#191)        | 10         | SPI_1.CLK    | GPA2.4 (#189)       |
| 11         | SPI_1.CSN    | GPA2.5 (#190)        | 12         | PWRON        |                     |
| 13         | XE.INT13     | GPX1.5 (#21)         | 14         | I2C_1.SCL    | GPB3.3 (#210)       |
| 15         | XE.INT10     | GPX1.2 (#18)         | 16         | I2_C1.SDA    | GPB3.2 (#209)       |
| 17         | XE.INT14     | GPX1.6 (#22)         | 18         | XE.INT11     | GPX1.3 (#19)        |
| 19         | XE.INT22     | GPX2.6 (#30)         | 20         | XE.INT20     | GPX2.4 (#28)        |
| 21         | XE.INT21     | GPX2.5 (#29)         | 22         | XE.INT23     | GPX2.7 (#31)        |
| 23         | ADC_0.AIN1   | XADC0AIN_1           | 24         | XE.INT17     | GPX2.1 (#25)        |
| 25         | XE.INT15     | GPX1.7 (Soft I2C SCL) (#23)         | 26         | XE.INT16     | GPX2.0 (#24)        |
| 27         | XE.INT25     | GPX3.1 (Soft I2C SDA) (#33)        | 28         | GND          |                     |
| 29         | VDD_IO(1.8V) |                      | 30         | GND          |                     |

====== OS configuration ======
If you use Ubuntu 14.04 image, you must consider this.Ubuntu 15.04 image has a proper configuration by default.\\
The IOBARD[[en:xu3_expansionboard|Use the IO Expansion Board]] modules are loaded automatically when the OS boots.\\
So you need to add the modules into the blacklist to use mores GPIOs.\\

Open **/etc/modprobe.d/blacklist.conf** file and add drivername using following syntax:
<code>
blacklist ioboard_bh1780
blacklist ioboard_bmp180
blacklist ioboard_keyled
</code>

====== GPIO Map for WiringPi Library (CON10 2 x 15) ======
^ Net Name     ^ GPIO & Export No ^ WiringPi GPIO ^ Header Pin ^ Header Pin  ^ WiringPi GPIO ^ GPIO & Export No ^ Net Name ^
| 5V0          | 5V0              |               | 1          | 2           |               | GND              | GND         |
| ADC_0.AIN0   | AIN0(1.8V Max)   |               | 3          | 4           | GPIO_01       | GPA0.2(#173)     | UART_0.RTSN |
| UART_0.CTSN  | GPA0.3(#174)     | GPIO_00       | 5          | 6           | GPIO_16       | GPA0.0(#171)     | UART_0.RXD  |
| SPI_1.MOSI   | GPA2.7(#192)     | GPIO_12       | 7          | 8           | GPIO_15       | GPA0.1(#172)     | UART_0.TXD  |
| SPI_1.MISO   | GPA2.6(#191)     | GPIO_13       | 9          | 10          | GPIO_14       | GPA2.4(#189)     | SPI_1.CLK   |
| SPI_1.CSN    | GPA2.5(#190)     | GPIO_10       | 11         | 12          |               | PWR_ON(INPUT)    | PWR_ON      |
| XE.INT13     | GPX1.5(#21)      | GPIO_02       | 13         | 14          | GPIO_09       | GPB3.3(#210)     | I2C_1.SCL   |
| XE.INT10     | GPX1.2(#18)      | GPIO_07       | 15         | 16          | GPIO_08       | GPB3.2(#209)     | I2C_1.SDA   |
| XE.INT14     | GPX1.6(#22)      | GPIO_03       | 17         | 18          | GPIO_19       | GPX1.3(#19)      | XE.INT11    |
| XE.INT22     | GPX2.6(#30)      | GPIO_22       | 19         | 20          | GPIO_21       | GPX2.4(#28)      | XE.INT20    |
| XE.INT21     | GPX2.5(#29)      | GPIO_26       | 21         | 22          | GPIO_23       | GPX2.7(#31)      | XE.INT23    |
| ADC_0.AIN3   | AIN3(1.8V Max)   |               | 23         | 24          | GPIO_11       | GPX2.1(#25)      | XE.INT17    |
| XE.INT15     | GPX1.7(#23)      | GPIO_05       | 25         | 26          | GPIO_06       | GPX2.0(#24)      | XE.INT16    |
| XE.INT25     | GPX3.1(#33)      | GPIO_27       | 27         | 28          |               | GND              | GND         |
| VDD_IO       | VDD_IO(1.8V)     |               | 29         | 30          |               | GND              | GND         |

{{:en:xu4:xu4_con10.jpg?592|}}
====== GPIO Map for WiringPi Library (Shifter-Shield 40 Pin) ======
^GPIO ^ WiringPi ^ Name     ^ Mode ^ Initial Level ^ Header Pin ^ Header Pin ^ Initial Level ^ Mode ^ Name      ^ WiringPi ^GPIO ^
|     |    | 3.3V     |      |   | 1   | 2   |   |      | 5v        |    |     |
| 209 | 8  | I2C1.SDA | ALT5 | 1 | 3   | 4   |   |      | 5v        |    |     |
| 210 | 9  | I2C1.SCL | ALT5 | 1 | 5   | 6   |   |      | 0v        |    |     |
| 18  | 7  | GPIO. 18 | IN   | 0 | 7   | 8   | 1 | ALT5 | UART0.TX  | 15 | 172 |
|     |    | 0v       |      |   | 9   | 10  | 0 | ALT5 | UART0.RX  | 16 | 171 |
| 174 | 0  | GPIO.174 | ALT5 | 1 | 11  | 12  | 0 | ALT5 | GPIO.173  | 1  | 173 |
| 21  | 2  | GPIO. 21 | IN   | 0 | 13  | 14  |   |      | 0v        |    |     |
| 22  | 3  | GPIO. 22 | IN   | 0 | 15  | 16  | 0 | IN   | GPIO. 19  | 4  | 19  |
|     |    | 3.3v     |      |   | 17  | 18  | 0 | IN   | GPIO. 23  | 5  | 23  |
| 192 | 12 | MOSI     | ALT5 | 1 | 19  | 20  |   |      | 0v        |    |     |
| 191 | 13 | MISO     | ALT5 | 1 | 21  | 22  | 0 | IN   | GPIO. 24  | 6  | 24  |
| 189 |    | SCLK     | ALT5 | 0 | 23  | 24  | 0 | IN   | CE0       | 10 | 190 |
|     |    | 0v       |      |   | 25  | 26  | 0 | IN   | GPIO. 25  | 11 | 25  |
| 187 | 30 | I2C5.SDA | ALT5 | 1 | 27  | 28  | 1 | ALT5 | I2C_5.SCL | 31 | 188 |
| 28  | 21 | GPIO. 28 | IN   | 0 | 29  | 30  |   |      | 0v        |    |     |
| 30  | 22 | GPIO. 30 | IN   | 0 | 31  | 32  | 0 | IN   | GPIO. 29  | 26 | 29  |
| 31  | 23 | GPIO. 31 | IN   | 0 | 33  | 34  |   |      | 0v        |    |     |
|     |    | POWER ON | ALT5 | 0 | 35  | 36  | 0 | IN   | GPIO. 33  | 27 | 33  |
|     |    | AIN.0    | ALT5 | 0 | 37  | 38  | 0 | ALT5 | 1v8       |    |     |
|     |    | 0v       |      |   | 39  | 40  | 0 | ALT5 | AIN.3     |    |     |

**The "gpio readall" shows the pin-map of 40-pin-Shifter-Shield not 30-Pin-header.**

{{:en:shiftershield:shifter-shield_con3.jpg?600|}}