probably simple answer but i cant figure it out

This is a discussion on probably simple answer but i cant figure it out within the C Programming forums, part of the General Programming Boards category; I am writing a C programme to blast into a PIC micorcontroller and i need a 1 millisecond delay. Could ...

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    probably simple answer but i cant figure it out

    I am writing a C programme to blast into a PIC micorcontroller and i need a 1 millisecond delay. Could anyone provide me code for a 1 miollisecond delay

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    sleep(1); But I doubt many platforms would be able to perform a 1 millisecond delay precisely.

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    and the hat of int overfl Salem's Avatar
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    Not mentioning which OS/Compiler you're actually using makes for vague answers.

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    OS/Compiler

    Using the Microsoft based package Visual C++

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    Software delay can be done using "for" loops

    for( a=0;a<8; a++ )
    for( b=0; b<80; b++ );

    or
    by using assembly lang delay routines can be written

    Delay routines depend on Clock frequency/Time each instruction takes.

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    and the hat of int overfl Salem's Avatar
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    http://faq.cprogramming.com/cgi-bin/...&id=1043284392
    Even though Sleep() is in milliseconds, you're not likely to get consistent 1mS delays out of it.

    I would suggest you need another approach to the problem, one which doesn't need precise time delays.
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    Off topic, but GREAT sig there, Salem....
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    Quote Originally Posted by pprabhakar
    By using assembly lang delay routines can be written.
    It needs someone to know the design of the machine. There is a timer interrupt in PCs (int0). I think it should be used for making delays at the highest precise that that machine can make, without consuming CPU time.
    I don't know, but that micorcontroller may has a special type library included, to handle such things (ex special sleep() function).
    Last edited by siavoshkc; 03-13-2006 at 06:06 PM.
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