Program C

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December 23rd, 2012, 05:25 AM

wael tunisian

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Program C

Hi everybody

I want to write a program in C language or algorithmic that change Value of integer "x"
from 0--->333 then 333-->0 and repeat this action forever.

Thank you

December 23rd, 2012, 06:05 AM

ptr2void

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Cool! Good luck with that, and let us know how it works out for you!

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December 23rd, 2012, 02:18 PM

b49P23TIvg

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Do you need a program that wastes cpu time (to use as a resource disrupting virus) or a program that doesn't return?

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December 23rd, 2012, 11:04 PM

Caleb9849

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I see, and is this program actually supposed to accomplish anything?

December 24th, 2012, 01:28 AM

salem

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Here's half of it (kind of

)

Code:

for ( int i = 0 ; i <= 0xdb ; i++ ) printf("%03o\b\b\b",i);

Also cross-posted
Apparently (since there's a nice picture there which we didn't get), the OP wants to generate a sawtooth wave.
(content is in Arabic, so I used google translate).

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Last edited by salem : December 24th, 2012 at 01:36 AM.

December 24th, 2012, 05:02 AM

wael tunisian

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Hi,

Yes I want to program a PWM signal (Pulse width modulation) and send it to DSP

The objective is to varying brightness of the Led by changing variable x

x = 333 ---> 100 % of brightness
x= 166 ---> 50 % of brightness
x= 0 ---> 00 % of brightness

I want to increase brightness from 0% -----> 100% then decrease it from 100% -- 0%

I'm using actually this program

Code:

 while(1)
     	 {
           brightness++;
           TIM4->CCR3 = 333 - (brightness + 0) % 333; // set brightness
           Delay(0x11111);
         }

But it doesn’t work like I want,
This program work like this 0% ---> 100% then repeat the same think 0% ---> 100%

Thank you

December 24th, 2012, 06:33 AM

salem

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So put both elements in your loop

Code:

while ( 1 ) {
   // code for 0% to 100%
   // code for 100% to 0%
}

December 24th, 2012, 06:46 AM

b49P23TIvg

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As a single function:

abs(166-brightness%333)

December 24th, 2012, 07:25 AM

wael tunisian

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Quote:

Originally Posted by b49P23TIvg

As a single function:

abs(166-brightness%333)

Thank you, the brightness in your program works from 50% ---> 0% ---> 50%

I change it to 100% ---> 0% ---> 100% using this modification

Code:

  abs(333-brightness%666)

Thank you for all responses

Comments on this post

b49P23TIvg agrees: Whoops!

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