Am Freitag, 6. Februar 2015 00:06:45 UTC+1 schrieb H: > > Using the PRU is a round about way to get regular sampling. The ADC can be > configured to sample at a regular rate and place samples in a FIFO and > interrupt as the FIFO fills. The PRU isn't needed. See the TRM. >
That's not entirely correct. Yes, you can configure the ADCSS to measure in continous mode, but you don't have control over the timing. To get an exact sampling rate it needs a trigger, either one of the TIMER-[4-7] or a software trigger (ie. from PRU code). When using the PRU for trigger, it can also do FIFO clearance and low level data manipulation, like scaling the samples to 16 bit (ie. to use them for audio data). The key benefits of the PRU solution are being more flexible and coding single source on a real-time unit. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
