[arm-allstar] Heresy

[kk6ecm]

I've long used USB(H) for true asserted high, and USB(L) for true asserted low, or "not," in digital logic diagrams, and the use of the bar for (L) was used in Boolean math (as in Karnaugh maps). Then there were paper gates, but that is another discussion :-)

Thanks,
Bob
kk6ecm

Sent from iPad


> On Dec 17, 2015, at 9:54 PM, Tim Sawyer <tisawyer at gmail.com> wrote:
> 
> In digital electronics high true is resented by the name and low true is represented by the name with a "not bar" over it. Being as it is not possible to include the "not bar" in ASCII config files the word invert is a satisfactory and logical (pun intended) substitute, IMHO.
> 
>> On Thu, Dec 17, 2015 at 8:33 AM, Doug Crompton <doug at crompton.com> wrote:
>> Barry,
>> 
>>  You are absolutely right. There are many things in the entire code that have screwy names and don't consistently relate to the actual operation. I am not sure if that review will make the maintenance update for the current code but it will for our big update coming early next year. 
>> 
>> 73 Doug
>> WA3DSP
>> http://www.crompton.com/hamradio
>> 
>> 
>> Date: Thu, 17 Dec 2015 14:17:35 +0000
>> From: bjbuelow at yahoo.com
>> To: arm-allstar at hamvoip.org
>> Subject: [arm-allstar] Heresy
>> 
>> 
>> While working on the COR timer, please consider changing the name of  "USB" and "USB-invert" to indicate the actual polarity or sense of the signal. Granted this is likely a long standing convention, but it is horribly ambiguous.  The sense should be at the point of the signal interfacing to the FOB, GPIO, etc.
>> 
>> consider COR_hi   and COR_lo
>> 
>> or something similar.  The same goes for CTCSS and PTT.
>> 
>> Barry w0iy
>> 
>> 
>> 
>> _______________________________________________ arm-allstar mailing list arm-allstar at hamvoip.org http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar Visit the BBB and RPi2 web page - http://hamvoip.org
>> 
>> _______________________________________________
>> 
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> 
> 
> 
> -- 
> --
> Tim
> _______________________________________________
> 
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