I am trying to verify the ADC speed with the LPCXpresso54608 eval board.
I stated with the lpc_adc_dma example and then modified the dma to have a linked list of 100 descriptors which then places the ADC data into an array of 100. I set the ADC to be in burst mode . I then send in a 100KHz sine wave, but what I receive looks like the ADC is sampling at maybe 400KHz, versus the 180 / 3 = 60MHz that I set it to.
Is there a better way to do this.
see attached file