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Changing the DAC_DMA frequency

Question asked by tjdub21 on Jun 5, 2015
Latest reply on Jun 8, 2015 by tjdub21

We can see that we can comment out the dds_setup() function and call the dac_dma_setup() function in order to use the sine wave "sine_lut_q" table. We wanted to know if there is a way to alter the frequency of this sine wave. Is this a possibility?

 

We can see in the dac_dma_setup function that we read from the DAC to determine what the frequency is. Is there a way to write to the DAC to change the frequency? It appears that the default frequency that is used on this generated sine wave table is 1.5 MHz.

 

Thanks for the help!

 

Additional Details: kc705 board, no-os software, windows 7

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