On 9/10/2016 5:04 PM, beezerlm wrote: > > I have a fairly simple motion control project I was planning on using > an > Arduino for, but my understanding is that the arduino's 16Mhz clock won't > keep > up with my encoder pulses. I will need to process a max of 10,000 pulses per > second. The project is to control 1 reciprocating pneumatic cylinder and to > simply monitor the position and change direction at a programmable in/out > position. Is this within the capabilities of the BBB?
The hardware eCAP encoder inputs on the BBB can easily keep up with this rate and much faster. The main issue you are likely to run into is latency and jitter on the ARM side running the control software. If your application is simple enough, you can write PRU code to run it and not have to worry about any ARM side system latency with Linux. If your application is more complex and you need easy access to system resources, you might consider using the Machinekit distribution. It's already setup with a hard-real-time kernel and HAL layer that has drivers for the BBB's eQEP hardware encoders. It should be fairly simple to craft a HAL file (which is basically a netlist or text version of a schematic design) using stock components that will twiddle pins based on the current encoder position. -- Charles Steinkuehler char...@steinkuehler.net -- 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/62465c16-d3da-3d4d-cd6f-8019c7da3fb9%40steinkuehler.net. For more options, visit https://groups.google.com/d/optout.
