RIOT-OS/RIOT — pull request #1859 by PeterKietzmann (2014-10-23 08:45:28+00:00)
Title: cpu/stm32f4: added i2c driver implementation

This PR implements the I2C low-level driver interface for stm32f4. It will be tested in more detail in another PR where the I2C-srf02 sensor is adapted to the general interface.