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Topic: Why doesn't my function work ? (Read 647 times) previous topic - next topic


Apr 07, 2013, 12:47 pm Last Edit: Apr 07, 2013, 12:53 pm by Skamajster Reason: 1
Hi! I am a newbie programmer, and i have a simple question. I would like to make my project and simplify it by splitting it in external functions.

But i have problem, because this functions does not change the value of variables or write something in serial monitor. Why? There is a simple example:

Code: [Select]

 int variable = 15;
 void function()
   Serial.println("I like green tea.");
   variable = 420;

 void setup ()

 void loop()
  void function();
  delay (1000);

It seems that this "function" don't work. Why? I read some articles, but i couldn't find solution myself. Thanks for help!


Apr 07, 2013, 12:49 pm Last Edit: Apr 07, 2013, 12:51 pm by AWOL Reason: 1
For a function to work, you have to call it, not provide a prototype.

"delay()" is also a void function.
Can you see how it is called is different to how you've tried to call your function?
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.



If you wish to invoke the function,  you need code like...
Code: [Select]

void loop()
    function() ;   // this calls the function
    // ... other stuff


Thank you very much! This was so easy, and i tried to repair it all the yesterday evening. Stupid me :).

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