[avrdude-dev] [bug #44171] Clarify Documentation on signal polarity

[Volker]

URL:
  <http://savannah.nongnu.org/bugs/?44171>

                 Summary: Clarify Documentation on signal polarity
                 Project: AVR Downloader/UploaDEr
            Submitted by: funker211
            Submitted on: Di 03 Feb 2015 11:33:13 GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: funker211
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

    _______________________________________________________

Details:

In the avrdude.conf(.in) file, it says that pin polarity can be inverted with
a preceeding tilde (~) character.

Yet, standard polarity is not defined (or not clearly documented). For
example, an AVR usually requires an active low reset signal. All avrftdi type
programmers simply assign "reset = 3;". Now, is that an active high or active
low signal? Somewhere, it should be stated what signal polarity actually is.
Does "reset = 3;" mean that the reset is high active? Or does it mean it is
(usually) active low and should I need an active high reset, I need to invert
this by writing "reset = ~ 3;"?

Secondly, the file states that a space is required after the tilde. Yet, in
the file and in the documentation, there are examples where this is omitted.
Is a space REQUIRED or not?

I think the documentation really needs an update here, both in the manual AND
in the avrdude.conf.in file.




    _______________________________________________________

Reply to this item at:

  <http://savannah.nongnu.org/bugs/?44171>

_______________________________________________
  Nachricht gesendet von/durch Savannah
  http://savannah.nongnu.org/