Overview

The ODROID-C1, ODROID-C1+, and ODROID-C0 boards are well designed boards originally designed for Android OS but works well with Linux based distributions. These boards use an Amlogic S805 processor (called “meson_8b” in the linux kernel). The functionality supported is:

2x I²C buses
1x SPI bus with 1x chip-enable
25x GPIO pins on the main J2 header

Support

The ODROID-C1, ODROID-C1+, and ODROID-C0 boards are supported when running a linux based distribution.

periph is tested with a minimal (head-less) Ubuntu 16.04 build

Drivers

Headers driver lives in periph.io/x/host/v3/odroidc1. It exports the main J2 header, which is rPi compatible except for a couple of analog pins (which are not currently supported).
sysfs driver lives in periph.io/x/host/v3/sysfs.

Tips and tricks

The ODROID-C1+ is described on Hardkernel’s web site: ODroid-C1+. The best reference for actually using the various I/O buses is the wiki: Hardware wiki.

The drivers and some of their peculiarities are described in the Ubuntu section of this wiki page.

Configuration

GPIO

Currently no package for memory-mapped I/O has been written for the Amlogic S805 processor, thus all gpio functions are implemented via sysfs.

Interrupts on GPIO pins are limited to 8 pins when using rising or falling edges and 4 pins when using both edges.

I²C

By default, I²C is not enabled. Enable with: modprobe aml_i2c

I²C #1 is on pins 3&5, I²C #2 on pins 27&28. I²C #0 is not usable.

This needs to be done at each boot. A good location is to add the above into /etc/rc.local before the exit 0 statement.

SPI

By default, SPI is not enabled. Enable with: modprobe spicc

Bus on pins 19, 21, 23 and chip enable pin 24.

This needs to be done at each boot. A good location is to add the above into /etc/rc.local before the exit 0 statement.

1-wire

1-wire driver is loaded by default. To free up GPIO #83 from 1-wire: rmmod w1-gpio

Buying

The ODROID-C1 is directly distributed by HardKernel.

The periph authors do not endorse any specific seller. These are only provided for your convenience.