How to change frequency of sine wave on FPGA IO334?
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Bharath Venkataraman on 30 Sep 2021
Edited: Bharath Venkataraman on 30 Sep 2021
One way to do this is by using the NCO HDL Optimized block and change the phase increment. Here is an example of how to use the block to generate a sine wave.
The other option is to have the build a counter using the delay and add blocks. The step size of the counter will need to be programmable, decided by an input port. Changing this step will change the input to the sine block, hence changing the frequency of the sinve wave emitted.