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???
02/10/06 10:55
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 		 #109686 - Re: codes and shcematic
Responding to: ???'s previous message
Hello Kai,
I went through the codes and the schematic, and iam quite comfortable with it

following which i would like to discuss the following:
Kai Klaas said:

After verification of proper programming, program the lock bits,

I am using a seperate programming device that connects to the computer USB port for programing the micro.
I would like to know how the three lock bits should be programmed.

Kai Klaas said:

You have three BCD switches

I want to use 3 decimal keys(each running from 0-9)to set the value instead of using a BCD switch.
can i know changes need to be done for it.

kai klaas said:

The timer was configured in that way, that timer0 delay plus cycle time of additional instructions yield 10msec.

The additional instructions are all one machine cycle(12 crystal pulses).
There are 10 additional instructions. So the delay will be 120 clk pulses.
But how, the execution time for a particular instruction is calculated?

Also, i would like to know what things need to be studied for writing codes in C or Keil uvision2 (C51 compiler).
what are all the topics i should be knowing.
i.e., will learning the architecture of a particular micro alone will be enough (or)
should i be proficient with the instruction set also, ..e.t.c.,
Is using C language preferred in embeddded software development rather than a Assembly Language? If so - why?
Kindly advice.

-suresh.


List of 57 messages in thread
TopicAuthorDate
Circuit for dispensing unit            01/01/70 00:00      
   1.1 sec monoshot            01/01/70 00:00      
      this thread is apin off from an earlier            01/01/70 00:00      
         yes            01/01/70 00:00      
         timing circuit            01/01/70 00:00      
   Monostable            01/01/70 00:00      
   Yes.            01/01/70 00:00      
   Hello All            01/01/70 00:00      
      Description of the "Dispensing Unit"            01/01/70 00:00      
         using micro            01/01/70 00:00      
            Microcontroller            01/01/70 00:00      
               Pressure            01/01/70 00:00      
            What must your circuit can do?            01/01/70 00:00      
               0.1 sec            01/01/70 00:00      
                  but not with a potentiometer            01/01/70 00:00      
                     Vernier            01/01/70 00:00      
                        and calibrate it how?            01/01/70 00:00      
               Precision            01/01/70 00:00      
                  Sure!            01/01/70 00:00      
                     Price            01/01/70 00:00      
                        Less than 1€            01/01/70 00:00      
                           levels of precision            01/01/70 00:00      
                              Please have a look into datasheet!            01/01/70 00:00      
                                 somewhere here there is a link            01/01/70 00:00      
                                    Details?            01/01/70 00:00      
                                       I recall that in an earlier thread            01/01/70 00:00      
                              Ooops.            01/01/70 00:00      
                              Blown Discharge PIN            01/01/70 00:00      
                                 You can also let the smoke out of the            01/01/70 00:00      
                                    limits            01/01/70 00:00      
                                       dissapation            01/01/70 00:00      
                                          There must be a point.            01/01/70 00:00      
                                             Fusing the bonding wires            01/01/70 00:00      
                                                History making            01/01/70 00:00      
                                                Current limiting            01/01/70 00:00      
                                 I do go through            01/01/70 00:00      
            schematic and code            01/01/70 00:00      
               codes            01/01/70 00:00      
                  Instruction Description            01/01/70 00:00      
                     not quite            01/01/70 00:00      
                        Pedantic            01/01/70 00:00      
                           is that not the pot calling the kettle b            01/01/70 00:00      
                              Of course not!            01/01/70 00:00      
                  Answers            01/01/70 00:00      
                     Re: codes and shcematic            01/01/70 00:00      
                        Recommendations            01/01/70 00:00      
                           Decimal switches - how to start C            01/01/70 00:00      
      LM555 pin 2 wired wrong.            01/01/70 00:00      
         ... and the LED?            01/01/70 00:00      
            i'm sure thts not the circuit            01/01/70 00:00      
            Astable??            01/01/70 00:00      
               I wondered who'd spot that first...            01/01/70 00:00      
   Damaged?            01/01/70 00:00      
      And Andy's correction            01/01/70 00:00      
         Absolutely!            01/01/70 00:00      
   one shot in the foot            01/01/70 00:00      
      Need not to work unreliably            01/01/70 00:00      

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