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Dan Henry
08/30/05 18:09
Modified:
  08/30/05 18:17

Read: 868 times
Boulder, Co
U.s.a.


 
#100315 - The wise men have spoken
Responding to: Manoz Joshi's previous message
Erik Malund said:
It takes time (=money) to write code, why would anyone give it away.

Oh yes, and in my experience, implementing reliable comms on an inexpensive RF link is not a "slam-dunk".

I have given away a lot of code in my day that is worthy of being given away -- the no-brainer stuff, software UARTs included.

But I have even given away valuable code to those demonstrating their eagerness to learn. One of my peeves are those (family members included ;-(, I am sad to report) who say "I want to know what Dan knows and do what Dan does", but when it comes down to it, they would really prefer to not put forth that much effort! Yet people who have been true learners, I have given away valuable code and my time to tutor. So Mr. Joshi is now in my "peeve zone".

Steve Taylor said:
I used to think the same as you, that a chunk of free code would solve all my problems, but the times I did use it, I ended having to understand the algorithms underlying the code before it did what I needed it to do ...

Yeah, that's it, what he said!

I was trying to prod Mr. Joshi along into asking the right questions and perhaps even answering those questions himself having gained an understanding and knowledge (with guidance, of course).

Andy Neil said:
Even if someone gave you their software UART code, that would not teach you anything about whether asynchronous NRZ signalling is actually a good idea in this application, would it?

And let's say I sent the fellow, not software UART code, but something that stands a chance of working on an RF link. Then we'd end up with the worlds longest thread about (some [hopefully] subset of) receiver conditioning, noise filtering, state machines, channel coding, clock recovery (probably not for his short messages), data recovery, error detection/correction, blah, blah, blah.

This is why I think he needs to understand his problem domain and his solution set.

List of 34 messages in thread
TopicAuthorDate
Serial RF with AT89C51 to AT89C51      Manoz Joshi      08/28/05 07:35      
   Lineks ?      Steve M. Taylor      08/28/05 09:31      
   UARTs and ASK      Dan Henry      08/28/05 09:54      
      Software driven UART - Bit-banging      Manoz Joshi      08/28/05 17:23      
         Channel coding        Dan Henry      08/29/05 07:16      
            Yes but...      Manoz Joshi      08/29/05 13:47      
               What is the hardware UART not doing?      Dan Henry      08/29/05 14:27      
                  Hardware UART      Manoz Joshi      08/29/05 19:08      
                     RF links pose challenges, but anyway...      Dan Henry      08/29/05 20:58      
                     Spend the money or do the hard work?      Andy Neil      08/30/05 00:56      
                        So many, so often, forget that design is      Erik Malund      08/30/05 07:10      
   Rendering      Steve M. Taylor      08/30/05 09:06      
      Me too !      Farshid Jafari Harandi      08/30/05 09:21      
      nope, just like any other (IE)      Erik Malund      08/30/05 11:13      
         Disappointed!      Manoz Joshi      08/30/05 13:58      
            What is the purpose of "learning" our co      Erik Malund      08/30/05 14:40      
            Sorry but      Steve M. Taylor      08/30/05 14:43      
            End of wrong stick?      Andy Neil      08/30/05 16:42      
            Learning? Dealing with disappoinment      Dan Henry      08/30/05 18:01      
            What you need to learn      Andy Neil      08/31/05 03:31      
               Apology      Manoz Joshi      08/31/05 08:03      
                  Recommendation      Andy Neil      08/31/05 09:25      
                  A short backgrounder      Dan Henry      08/31/05 11:26      
                     Missing the point      Russell Bull      09/01/05 03:50      
   The wise men have spoken      Dan Henry      08/30/05 18:09      
   UARTs, the last word Mr. Joshi      Dan Henry      08/30/05 18:13      
      *Groan* Here is my inital code      Manoz Joshi      08/31/05 01:39      
         Does it work ?      Steve M. Taylor      08/31/05 01:53      
            Does it work at all?      Andy Neil      08/31/05 03:53      
         The Point.      Andy Neil      08/31/05 03:46      
            why analyze how deep the water is before      Erik Malund      08/31/05 07:14      
         TF2 needs to be cleared in interrupt      Charles Bannister      08/31/05 04:54      
         the right way to get help definitely is      Erik Malund      08/31/05 07:05      
         Pinching a loaf      Dan Henry      08/31/05 18:47      

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