Very simple library for driving the Analog Devices 9834 DDS Chip - commonly found on breakout boards that look like this:
It was developed for the Teensy Arduino-compatible microcontroller, and should work with any Arduino based MCU.
Clone this repo into your libraries directory for your Arduino installation, for example:
$ cd ~/Documents/Arduino/libraries
$ git clone https://github.com/AliBarber/AD9834.git
To keep track of the currently in use FSelect register - you will need to create an instance of the AD9834 class. This library will also use the Arduino SPI library for control. Should you need to configure non-standard pins, use the SPI.setMOSI(),SPI.setMOSI() and SPI.setCKD() functions before initialising the library.
At it's simplest, the following should produce a 14MHz sine wave output, assuming the following physical wiring (AD9834 -> Arduino) and the standard 75MHz crystal on the evaluation board.
FSY (Frame Sync) -> Digital I/O Pin 10
CLK -> SPI SCK
SDA -> SPI MOSI
#include <AD9834.h>
AD9834 *dds;
void setup(){
dds = new AD9834(10);
dds->update_freq(14000000);
}
void loop(){
}