On Thursday 20 February 2020 21:00:47 Gene Heskett wrote:

> On Thursday 20 February 2020 20:23:53 Peter C. Wallace wrote:

> > > Thanks Peter.
> >
> > HDR26 <--> DB25
> >
> > -- P2               26 HDR  DB25
> > -- I/O 17   PIN 1   PIN 1
> > -- I/O 18   PIN 2   PIN 14
> > -- I/O 19   PIN 3   PIN 2
> > -- I/O 20   PIN 4   PIN 15
> > -- I/O 21   PIN 5   PIN 3
> > -- I/O 22   PIN 6   PIN 16
> > -- I/O 23   PIN 7   PIN 4
> > -- I/O 24   PIN 8   PIN 17
> > -- I/O 25   PIN 9   PIN 5
> > -- I/O 26   PIN 11  PIN 6
> > -- I/O 27   PIN 13  PIN 7
> > -- I/O 28   PIN 15  PIN 8
> > -- I/O 29   PIN 17  PIN 9
> > -- I/O 30   PIN 19  PIN 10
> > -- I/O 31   PIN 21  PIN 11
> > -- I/O 32   PIN 23  PIN 12
> > -- I/O 33   PIN 25  PIN 13

Now I find something is aglay. Following my usual practice of working 
down from the top in gpio usage, gpio.031 is the first un-commited gpio.

But setting it to invert_output, is_opendrain, and is_output, has no 
effect. Not an error according to halshow, but has no effect on the 
output.

When driven by E-stop.out it is not reversed at the halmeter for 
hm2_5i25.0.gpio.031.out.  I'd like it to sink (show false) when 
E-stop-out is true.

How do I accomplish a sink when the net is from E-stop when E-stop is 
true?

This is what I've put in the .hal file:

net estop-out   <=   iocontrol.0.user-enable-out
# can I use gpio.031 supposedly p2-11 to switch main power
setp hm2_5i25.0.gpio.031.is_output true
setp hm2_5i25.0.gpio.031.is_opendrain true
setp hm2_5i25.0.gpio.031.invert_output true 
net estop-out   =>   iocontrol.0.emc-enable-in
net estop-out   =>   hm2_5i25.0.gpio.031.out

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)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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