Thank you Andy. I think the driver works just fine. I agree that the control port is bidirectional. I would think that the entire control group of pins is set to either output (for modes in and out) and set to input (for mode x). I am just trying to confirm this. This is why I think there is a typo in the table in the docs. If this is the case, can the documentation be corrected? Honest, I am not trying to be a PITA. Just trying to prepare accurate information for my next tutorial.
Joe Hildreth ----- On 11 Jul, 2018, at 16:45, andy pugh [email protected] wrote: > On 11 July 2018 at 21:36, Joe Hildreth <[email protected]> wrote: > > >> On this chart or table, it shows for the "in" column that pin 14 is an input >> pin. I think this is in error and should be labelled as an output. To test >> my >> theory, I installed a second PCI PP in a computer and run the stepper config >> wizard. I set up the first port as output and the second as input. >> >> In both output modes and input modes (for the ports) pin 14 is labelled as an >> output pin. This would make sense considering that pins 1, 14, 16 and 17 >> belong to the control group. > > Wikipedia shows pin 14 as bidirectional. > > I can't help feeling that someone else would have noticed by now if > the parallel port driver didn't work? > > https://github.com/LinuxCNC/linuxcnc/blob/master/src/hal/drivers/hal_parport.c#L707 > Shows all the control group being set as inputs or outputs. > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1916 > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
