Peter, Great news. Will you be able to intermix steppers and PWMs on a single board? If I understand correctly your statement on PWM, that should be adequate for my needs. For my immediate project, I need three axes of steppers and one unidirectional PWM (no encoder) with a frequency between 5Khz and 25Khz.
I also recently received a development m5i20 board for this project, and would be glad to help out with the EMC driver, testing, or anywhere else I can assist. Regards, Eric > Finally had a bit of free time to work on this. Still needs > testing and more features but here whats there so far: > > 12 step gens. Each stepgen is 28 bit DDS + FIFO + > preset/residue clear logic > > Step gens overlaid on basic I/O port, Step generators can be > individually enabled, or I/O pins left as simple I/O. So for > example if the stepgens are all disabled you have a 72 bit I/O port. > > Step/DIR or quadature output selectable per generator. > > Step gens are buffered (16 deep x 32 bit wide FIFOs each). > This means that real time is not required (at least for step > generation), For example at a basic clock of 8 MHz and a > frame size (frame size is how many additions are done to step > generator DDS per FIFO entry) of 8000, the step gen will > consume one FIFO entry per mSec. Since the FIFOs are 16 deep, > if we use interrupts or just poll the FIFOhalf full register > the interrupt latency or minimum polling time would ge 8 mSec > (125 Hz). > > > Also the basic local bus interface has been changed to be 32 > bit memory only, and has support for burst transfer mode. > > > Things to do: > > Add quadrature counters (probably just graft in existing one) > > Add simplified PWM gens (no fancy signed/unsigned modes) > > Add SPI channels (for general use plus for our I/O expander > and 7I41 stepper > interface use SPI) ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
