On Wednesday 28 November 2018 12:10:13 Peter C. Wallace wrote: > No need to scope the Step/DIR outputs, the + outputs are active high > and match the FPGA pin polarity, the - outputs are inverted
Gigahertz samling Scope is handy, sitting on a mahogany 1x12 above the mill thats too badly warped to use for big stuff. And I've had a scope probe in one hand since I was 16 yo. Very Handy tool. Then I was fixing all the Zenith radios and TV's the dealers in Iowa and the north half of Missouri couldn't fix. > > The lack of being capable of bidir on its gpio's reduces my inputs > > to a max of 21, 16 in the 7i76 ad 5 on the std bob. Might get > > crowded, we'll see but the 3 from the encoder won't come out of > > that, so that helps, a lot. For gpio inputs I'll probably do like I > > did on the 7i90 on the pi/sheldon, I started from the top, gpio.071 > > and worked down, so the uncommited stuff was always in the middle, > > and thats worked well, I've not had to move anything to add another > > in/out circuit. > > Umm the 7I76 has 32 field inputs (and 16 field outputs), so you > probably dont need any GPIO... > I can see how I'll have to change my thinking, too used to configuring the 7i90 gpio pin to do what I need to do before I can actually use it. ;-) [...] Thanks Peter. -- Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
