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Arduino Nano serial control of parallel AD9854 Ebay module
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moffy:
I purchased a AD9854 Ebay module expecting to control it by its serial interface. However the module designers had seen fit to enable only the parallel interface. It's a difference of about 16 pins vs 4-5 pins for the serial. There is also the issue of the 5v to 3.3v conversion from the Nano to the AD9854 module. So I designed a serial to parallel interface using a couple of 74AHC595 serial to parallel shift registers. The 74AHC version is 5v tolerant when run from 3.3v, and is also available in a 16 pin DIP package which meant I could use some vero board. By playing with the pin connections I was able to minimise the number of jumpers on the vero board.
I wrote some code for the Nano and it works quite nicely. I must say that the module seems to perform very well.
Connections between Arduino Nano and AD9854 Serial to Parallel Interface Board.
NANO AD9854 Interface Board(AD9854_sp_sch.pdf)
A0 RST_5
A1 CLK
A2 /OE
A3 DATA
A4 /WD_5
GND GND
hongselectronics:
Did you get the quadrature signals working on this module? I am very interested in seeing the code for this. I just got an AD9854 module, and I am pretty shocked by the lack of Arduino support for this amazing module. Especially given the fact that it is directly mentioned in Art of Electronics 3rd Edition.
moffy:
Yes I did get it working. I was able to set frequency etc. I'll see if I can look up the old code and post it here. I'll have to search for it a little.
The project is an Atmel Studio v 7.0
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