I am able to manually control ad9959 with arduino due by writing appropriate instruction bytes and data bytes for generating various frequencies. Next, I would like to make a GUI so that an user can enter any frequency value. Currently, I have to always change FTW to get different frequencies, which works perfectly in my case, but I do not have any idea how to transform this dynamic change of FTW into a GUI format. Does anyone have any example or ideas to share? It would be really helpful....
Thanks in advance.