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Delay Problems

 
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Vodka



Joined: 13 Sep 2007
Posts: 14

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Delay Problems
PostPosted: Wed Oct 03, 2007 7:36 am     Reply with quote
Hi all, i have a small problem with delay_ms() and delay_us() functions. I`m trying to control some servomotors with this functions and i need something like "delay_ms(x)" for a smoother controll in which "x" is a variable that increments and decrements.BUT the problem is that function delay_ms() doesn`t support a variable like that(simply don`t work). I tried to make my own delay functions :
Code:

void delay_u(long int u){
      long int i;
                     for(i=0;i<u;i++){
                        delay_cycles(5);     // 20Mhz = 200ns *5 =1us
                           }
                    }
void delay_m(long int m){
      long int j;
                     for(j=0;j<m;j++){
                        delay_u(1000);
                     }
                  }

this doesn`t work either.
I`m using a 20Mhz crystal and CCS versions 3.203 or 3.22
Can somebody help me please???

Many thanx,
Vodka
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Wed Oct 03, 2007 7:58 am     Reply with quote
Here are two functions for a long delay with a variable parameter (16-bit).

long_delay_us():
http://www.ccsinfo.com/forum/viewtopic.php?t=16656&start=1

long_delay_ms():
http://www.ccsinfo.com/forum/viewtopic.php?t=375&start=1


You only need these functions if you have vs. 2.xxx or 3.xxx of the
compiler. In version 4, this feature is included in the delay_us() and
delay_ms() functions.
Vodka



Joined: 13 Sep 2007
Posts: 14

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PostPosted: Wed Oct 03, 2007 11:12 am     Reply with quote
Yes indeed it works, very silly of me Embarassed .
Thanks again PCM programmer very much
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