Re: Si570 Set Frequency
The Si570 is a tricky beast!toggle quoted messageShow quoted text
Craig AA0ZZ conquered the programming using pre-calculated tables like Nick said.
Silicon Labs has an app note that has C code for one of their microcontroller chips.
I was able to port that to a PIC using Microchip's free C compiler but it took up almost
all the memory :(
BUT Arduino's run C and pretty efficiently. I would get the app note and port it to
Arduino. The actual code that sets the frequency is only a few lines. It is probably
not as fast as the integer calculation/table method.
If you could use the Si5351, there are Arduino libraries available to do it. Is easy,
I have been using the Etherkit library and board for a few years now.
I have both an AD9851 (DDS-60) and Si5351 in my PHSNA using modified Nick code
with LCD and encoder for local standalone. It is my favorite piece of test equipment,
thanks to Nick and PHSNA group!!
Code is posted in the Files area.
On 4/14/2019 1:55 PM, Nick Kennedy wrote:
For this program it might take a bit of work. The program is set up to have