Program SI534x boards with Arduino UNO and I2C

Load the I2CUniSi534x.ino firmware in the arduino board editing first the I2C address of your silicon board (replace Si5341/4 value and edit it in the Write/Read and Page functions).
Execute the arducom.py program using python3 (not tested with python2) which will open the interactive interface

./arducom.py -i

If it doesn't work, try first to install the library pyserial

pip install pyserial

To run it you also need to make the program executable:

chmod +x arducom.py

Generate the csv file obtained via ClockBuilder Pro (being careful to remove the Summary header from the option of the register file (export Menù of CBPro) selecting the C option and inserting the filename. Afterwards you can load the I2C.in file (now regenerated), using the option L. Some seconds will pass before the configuration is loaded.

Hardware jumpers to set

All the ENB jumpers for the outputs must be set in order to have a VDD in the outputs (otherwise you won't be able to see the signal). By short-circuiting 2.5/3.3V pins to the center one you can get those amplitudes. If left open, the signals will have an amplitude of ~1.8V.
To program the clock generator via I2C, the I2C_SEL pin must be set to high using the 3.3 V signal of the Arduino and the SDA/SCLK inputs of the SI534x board must be connected (including a pull-up resistor of ~4 kOhm to the 3.3 V of Arduino) to the SDA/SCL pin outs of the UNO board.
The MCU jumpers of SDA and SCLK must be disconnected for this specific purpose (J36 on Si5341 and J17 on Si5344).

Helper command line

usage: ./arducom.py [-h] [-i] [-r <page> <register>] [-w <page> <register> <value>] [-L] [-c <filename.csv>]

Read/Write single registers + load and create configuration files for Silab5341/4

optional arguments:
  -h, --help            show this help message and exit
  -i, --interactive     run the program in interactive mode
  -r <page> <register>, --read <page> <register>
                        read register of Silab, syntax <page> <register> in hexadecimal
  -w <page> <register> <value>, --write <page> <register> <value>
                        write register of Silab, syntax <page> <register> <value> in hexadecimal
  -L, --load            load I2C.in file (used to fully program Silab board)
  -c <filename.csv>, --convert <filename.csv>
                        convert .csv file to I2C.in input file