== Setup == 
At compile time add "python-smbus" package.

== Example ==
Let's read acceleration data from LIS302L accelerometer:

  from smbus import SMBus
  bus = SMBus(0)
  addr = 0x1d
  # enable the accelerometer by setting CTRL_REG_1 (0x20) appropriately
  bus.write_byte_data(addr, 0x20, (0b0100 << 4 | 0b0111))
  while True:
      print bus.read_byte_data(addr, 0x29) # print x axis