2013/12/21 Charles Steinkuehler <char...@steinkuehler.net> > Yes, you can run stepgens on both PRUs...you'll just have to tweak the > HAL module to support this. It's on my list of things to do some day, > but it's not real urgent. > > The good news is you almost certainly don't need to run code on both > PRUs to do what you want. If you are not seeing step/dir signals on the > newly added I/O pins, you probably have something simple wrong. > > Some things to check: > > * You are using the pins assigned to the on-board HDMI/LCD output. You > have to make sure you disable *BOTH* of the HDMI "capes" (BB-BONELT-HDMI > and BB-BONELT-HDMIN) or you won't be able to use these pins. > > * You need to make sure the pins are setup for GPIO output. This is > done in the setup.sh script called at the start of the hal file. Edit > as appropriate to add your pins to the list and make sure the direction > is "out". > > * To test, before you run LinuxCNC, manually run the setup.sh file and > then see if you can toggle the GPIO pin values normally. Note you need > to use the kernel pin numbers in setup.sh (above) and for gpio<N> (below): > > echo 1 > /sys/class/gpio/gpio<N>/value > echo 0 > /sys/class/gpio/gpio<N>/value > > ...if the I/O pin doesn't 'twiddle', you don't have the BeagleBone setup > properly. If it does, LinuxCNC and the PRU code should be able to talk > to it. If it's still not working, double-check the pin setting in HAL > (which you can change at runtime with halcmd). The HAL pin setting > should be the kernel number (from above) + 32. > > Thank you! I chose other pins and added them to sh script, now it works. BTW it seems strange that pins numbering scheme in setup script is different from pru stepgen. That can misguide a novice. Also, what is BB-LCNC-BEBOPRBR-00A0.dts file?
Andrew ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
