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???
04/11/06 18:39
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#114110 - that's the source of the trouble ...
Responding to: ???'s previous message
From where I normally sit, not in project management, but in the "worker" pool, I view resource allocation as very much upside-down. Allocation of staff and time budget is generally just as fouled-up. I've stated before, that documentation is generally a far larger task than design, coding, debugging, manufacture, etc, to the tune of aobut 95% of the total effort. Testing also is a MAJOR part of the task, while the entire hardware, firmware, PCB design, etc, consumes less than 1%, less than 25% of the effort involved in debug.

Sadly, that's not how things are done these days, since the preparation of documentation is often entirely skipped, and testing amounts to, "If it doesn't catch fire, then ship it."

If I had a dollar for every piece of commercially provided PC hardware that didn't function as advertised, and didn't provide even a skeletal bit of documentation, I'd be able to pay for the MAALOX, whiskey, and prune juice I've consumed as a consequence of buying them.

The problem underlying this pitiable situation is that the doc's are generated after the design is done, and, by then, nobody really knows what's been designed. Another problem is that, though structured design philosophies have been available and much-discussed for a couple of decades, the tendency is still for both hardware and software to be designed in either a fractious or a bottom-up style, one because people want to re-use what they've already done, and the other because they know from the outset what they want to use, regardless of how inappropriate it might be.

RE




List of 32 messages in thread
TopicAuthorDate
Interfacing 16550 to 80c51            01/01/70 00:00      
   use an SPI UART            01/01/70 00:00      
      Why not an 16550            01/01/70 00:00      
         parallel - serial vs serial -serial            01/01/70 00:00      
         I hope you have the datasheet            01/01/70 00:00      
            well, in this case            01/01/70 00:00      
               That's my point ...            01/01/70 00:00      
                  if he wants to make crap, help him make            01/01/70 00:00      
                     There's no accounting for taste.            01/01/70 00:00      
                        External uart            01/01/70 00:00      
                        a LPC            01/01/70 00:00      
                           Well, that's an option, BUT ...            01/01/70 00:00      
                              My opinion: (1) nor valid (FedEx) (2) un            01/01/70 00:00      
                                 this may be wandering off topic, but            01/01/70 00:00      
                                    many            01/01/70 00:00      
                                       Tested or "seemed to work" ?            01/01/70 00:00      
                                          "try it and ship it"            01/01/70 00:00      
                                             where you sit determines what you see            01/01/70 00:00      
                                                I think apples and oranges            01/01/70 00:00      
                                                   that's the source of the trouble ...            01/01/70 00:00      
   SPI or I2C to UART            01/01/70 00:00      
   Pins, Area, EMI            01/01/70 00:00      
      can't you just specify 2 stop bits?            01/01/70 00:00      
         no i cant            01/01/70 00:00      
            Some possibilities            01/01/70 00:00      
               80c51 Software UART            01/01/70 00:00      
            Why not?            01/01/70 00:00      
               is this not being one of the "folks" Quo            01/01/70 00:00      
   what device does not like 2 stop bits?            01/01/70 00:00      
      Just a guess ...            01/01/70 00:00      
   Schematic for 16550/8051            01/01/70 00:00      
      16550/8051 example            01/01/70 00:00      

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