在Raspberry Pi上为C设置i2c？

Question

I'm setting up i2c for an Application written in C, but I've not been able to find any how-to's for it. I'm running a model-b Raspberry Pi on Debian 6 with LXDE. Can anybody show me how to set up i2c so I can use it in a C Application?

Thanks for any help in advance

Answer 1

I've been looking for similar information and I found a couple of i2c tutorials, one in adafruit tutorials and the other in Guy Carpenter's Gaugette blog . I'm not yet at the stage of actually using it so I can't vouch for their completeness but they seem to be a good start.

• Configuring Your Pi for I2C
• Analog Gauges Using I²C on the Raspberry Pi
• I2C Installation for Raspberry Pi . I think this is only necessary if not using AdaFruit's Occidentalis release which has it included.

Answer 2

try this :

C GPIO Interface library for the Raspberry Pi

It offers API for handling GPIO port on Raspberry, including dedicated functions for I2C interface. I've been using this to read measurements from temperature sensor and it works perfect (STCN75 connected to RPi rev. B).

You can find examples and instructions on author's website. Project is maintained and updated frequently on public Git repo.