# RasPi-Si5351.py
  
  A python2 library for setting the frequency of a Si5351 off the Raspberry Pi's I2C bus.
  
  ## Introduction
  
  This library is derived from Adafruit's si5351 library code at https://github.com/adafruit/Adafruit_Si5351_Library
  
  The library requires python2 at the moment.  Since the Adafruit_I2C.py library depends on python-smbus and this code uses that library, make sure you have the python2 package python-smbus installed:
  
  $ sudo apt-get install python-smbus
  
  Example python2 code:
  
  ```
  from Si5351 import Si5351
  
  si = Si5351()
  
  print "Set Output #0 to 13.703704 MHz"  
  
  # vco = 25 MHz * (24 + 2 / 3) = 616.67 MHz
  si.setupPLL(si.PLL_A, 24, 2, 3)
  
  # out = 616.67 MHz / 45 = 13.703704 MHz 
  si.setupMultisynth(0, si.PLL_A, 45)
  
  # uncomment to divide 13.703704 by 64
  # si.setupRdiv(0, si.R_DIV_64)
  
  si.enableOutputs(True)
  ```