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 Robotics / RCX / 1935
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Subject: 
Re: IR header how optional
Newsgroups: 
lugnet.robotics.rcx
Date: 
Sun, 2 Feb 2003 19:58:42 GMT
Viewed: 
3856 times
  
if I'm correct to apply here such formulae

Whether serial transmission is as simple as start:data:parity:stop repeated, or
not, I still have no idea.  But I'm posting again to say in those calculations
I was off a whole order of magnitude, sorry.

I imagine the calculator I used reported "0.004583333333333333", which I then
misread to get that silly answer.  After all, just 800 bit/s = 100 byte/s = 10
ms/ byte.  Scaling 3X says 2400 bit/s = 3.3 ms/ data byte.  Which suggests 2400
* 8/11 bit/s is 1745 data bit/s is 4.58 ms/byte ... NOT 45.8 ms/byte.

Saving 3 bytes per packet therefore saves just 13.75ms.

Maybe still worthwhile, but no longer so very wonderful.

Pat LaVarre



Message is in Reply To:
  IR header how optional
 
(...) Yep. But via our solid new reply framing code, thanks again, now I can see ... (...) Nope. At least not here: now that I look, I see my RCX often doesn't require the PC to send x 55:FF:00. IR command packets like x 10:FE 10:FE PBAliveOrNot and (...) (22 years ago, 2-Feb-03, to lugnet.robotics.rcx)

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