On Wed, 26 Oct 2005, Paul Alfille wrote:
On Wednesday 26 October 2005 04:37 pm, Marek Wodzinski wrote:
On Wed, 26 Oct 2005, Alfille, Paul H.,M.D. wrote:
Ahhh... I'm sorta a software guy. 1=on 0=off
Sorry for all the confusion.
I'm a hardware based software guy:-)
The easiest way to bypass this is the add an "alias" -- another property
that is the inverted state of the PIO pin. What should it be called?
Maybe another idea: something like --dont-convert, --dont-negate or
--raw-rw to configure?
And do not convert input/output with this option - just raw values like in
documentation of chips.
Umm... unmanageable. We can't have incompatible behavior based on compilation
settings, the confusion would be prodigious.
A little more acceptable would be command line options -- though when you
start negotiating between server and client settings, and owperl... it gets
complex again. How about rPIO? It stands for "raw PIO" or "real PIO" or
"reversed PIO"? The name reveals the syntax. Just looking at the man page
brings the issue to light.
Another idea for cleaning the mess:
- Just leave PIO as is and document this as something like 'not
recommended for use by hardware guys':-)
- Make latch.* writable in chips like DS2413 and add readable in
chips like DS2405
- sensed.* is ok for reading real state of pin
- add write only toggle.* in chips like DS2405 (because you can not set
state of internal latch - just toggle).
- in DS2408 'latch' should be renamed to something like 'activity' for
consistency, because there are two latches: main (pio) and activity. And
of course add a real 'latch'.
For more complete 'todo' list I must go across the sources and chip
documentation to see if there is something else.
I can help you with revision source vs. chip docs and maybe some simple
patches.
regards
majek
--
"If you want something done...do yourself!"
Jean-Baptiste Emmanuel Zorg
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