C Make my own library in arduino IDE

[C] Make my own library in arduino IDE - Printable Version

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+---- Thread: [C] Make my own library in arduino IDE (/showthread.php?tid=5189099)

Make my own library in arduino IDE - UZHA - Mar 1, 2016

I want to make my code more elegant to get ekstra points from my teacher. So my plan is to use a seperet file for all my functions that I will need to use throughout the program. We are making an arduino which can calculate your BPM of your heart. So I have so far made one function and it's job is to get average of a list. here is my code!:

Code 
#include "Helper.cs"

int measurment[10]; 

int measur = 0; 

int reading = 0; 

int counter = 0; 

void setup() {

  Serial.begin(9600); 

}

void loop() {

  while(counter < 10) { // we will get readings from the analogreader and we want to do that 10 times and then start calulating. 

      reading = analogRead(0); 

      measurment[counter] = reading;

      counter++;

  }

 getAverage(measurment[10]); // using average to get to know if this will work or not!

}

Now that is so far my main code. This function is made in notepad++ and I want to use it as a library for my code:

Code 
#ifndef Helper.cs

#define Helper.cs

#include "Arduino.h"

public int getAverage(int list) { 

    int counter = 0;     

    int sum = 0; 

    for(int counter;counter < 10;counter++){

        sum += list[counter]; 

    }

    return sum; 

}

#endif

Now will this work or do I need to make the library inside the arduino IDE?
Do I need to make classes for a library to work or is this fine?

Note: I'm just a beginner at coding and please tell me if there is anything wrong with the code.

* - Goodies - Mar 1, 2016

Where do I begin.

PHP Code 


<?php 
public int getAverage(int list) {
    int counter = 0;     
    int sum = 0;
    for(int counter;counter < 10;counter++){
        sum += list[counter];
    }
    return sum;
} 

This won't work. list is an integer, not an array.
counter in the for loop is re-declared but unintitialized. It should be initialized to 0, and really, it should be declared outside the loop depending on the language.

PHP Code 


<?php 
int counter;
for(counter = 0; counter < 10; counter++){
    // code here
} 

If you are passing an array, you want to pass the size as well. Also, because the name of the funciton is 'getAverage', I assume you want the average.

PHP Code 


<?php 
public int getAverage(int *list, int size) {
    int counter;     
    int sum = 0;
    for(counter = 0;counter < size;counter++){
        sum += list[counter];
    }
    return sum/size;
} 

Call it with:

PHP Code 


<?php 
void loop() {
  measurement[10];
  int counter;
  for(counter = 0; counter < 10; ++counter){
      reading = analogRead(0);
      measurment[counter] = reading;
  }
  int avg = getAverage(measurment, 10);
} 

* - webdev77 - Mar 2, 2016

Just a thought as well, rename your files to the appropriate file extensions. Arduinos do not support C#. While technically it doesn't matter since it is just text files you are working with, I'd recommend making them header files or C source files.

* - UZHA - Mar 2, 2016

So Goodie,
if I then make this a PHP file then call #include"library_getAverage"(<- jusr random name), I will be able to use it in my program?
Then after that I can just keep on adding functions as I go on coding for the arduino project?