Note

All Credits and Copyrights under the MIT License to Max!!

This library is originally from Max Shmelev, you can find it here. I copied it to change and put some new things in it. Max seems to ignore push requests, a user made a change in his library and Max hasn't imported it in his repo since 2012.

If you have a change, feel free to make a pull request. I try to keep this library tidy and clean =)

RPi.I2C.Net

We have two parts in this repo. Code and examples are in the repo wiki

1. Native I2C C library

Located under LibNativeI2C/src

You have to compile this on your *unix box for yourself. Sorry :(

2. Wrapper for C# Programs

This is the more interesting part of this repo. This library, which is coded in Visual Studio 2013, is like a wrapper for the C functions in the Native I2C library, so you can use the c functions in C# projects. woohooooo

All parts are provided as sourcefiles, so you can use them in your next C# project.

Everything down below here is copied from Max's repo for integrity.

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I2C library on C# for Raspberry Pi. About connecting Arduino and Raspberry Pi read this blog posts: hardware part and software part.

Description

The library provides basic read/write functionality with I2C-devices for Mono v. 2.10.x. It uses device files exposed by the I2C kernel drivers in Arch Linux.

Preparations

1. Update your system to get I2C kernel drivers. For Arch Linux:

$ pacman -Syu

2. Load I2C kernel module. You can do

$ modprobe i2c-dev

Or if you want to load the module automatically on boot add i2c-dev to /etc/modules/. If you're on Arch Linux create file /etc/modules-load.d/i2c.conf and add i2c-dev to the file.

Library Usage

1. The RPi.I2C.Net library requires a native-C library libnativei2c.so, which is a part of this project.
   • It's precompiled for Arch Linux. If you need to compile it, run make from Lib/LibNativeI2C/src.
   • Put libnativei2c.so to /usr/lib/ or to the same folder where RPi.I2C.Net.dll is located.
2. Create I2CBus instance with I2CBus.Open(). The function accepts path to an I2C device file, which is "/dev/i2c-0" for RPi rev.1 and "/dev/i2c-1" for RPi rev.2 by default.
3. Use I2CBus.WriteBytes() or I2CBus.ReadBytes().

using (var bus = RPi.I2C.Net.I2CBus.Open("/dev/i2c-1"))
{
	bus.WriteByte(42, 77);
}

Performance

The performance testing was done using:

• Raspberry Pi, Rev.2, not overclocked
• Arduino Uno

####Writing Sending 3-byte packets to Arduino. Results: 1428 transactions per second (4284 Bytes/s)

####Reading Reading 3-byte packets from Arduino. Results: 1660 transactions per second (4980 Bytes/s)

####Reading and Writing Sending 3-byte packet to Arduino and reading back the respose 3-byte packet. Results: 830 transactions per second (4980 Bytes/s total)

License

The project uses MIT license: do whatever you want wherever you want it.