Evan Where do you stand with the RT - ADC project? An update would be welcome. jb
On Monday, September 10, 2012 7:59:55 AM UTC-4, Evan Thomas wrote: > > > Hello, > > embedded/real time/hardware newbie here. I have an requirement to read an > ADC, perform some simple FP calculations and write to DAC. It needs to be > at least 20KHz but importantly the latency on the DAC/ADC needs to less > than 10us. Low jitter is also important. Is the beaglebone up to it? I see > this asked many times but not answered so I am not really expecting an > answer now :) > > I have two specific questions > > 1) This might be naive but I thought I would try the PREEMPT_RT patch. In > particular, I wanted to combine it with Robert Nelson's patches and build > process. After many hours of random git commands, patch and modifying > scripts I came to the conclusion that the current PREEMPT_RT patch is for > 3.4 whereas Robert's patches are for 3.6. Firstly, does it even make sense > to try PREEMPT_RT on BB? If so, what is the best way to proceed? Use 3.4 > versions of Robert's patches and risk bugs and missing features? Wait > for PREEMPT_RT patch against 3.6? > > 2) What is the best way to do low latency (<10us) 14bit ADC and DAC on the > BB? I assume it would have to be over the SPI bus, but beyond that I'm > clueless. If someone can point me in the right direction I would really > appreciate it. > > Thanks, > Evan. > -- 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.
