defining constants in seperate file...

Forum 2005-2010 (read only) General Frequently-Asked Questions
1

I have a file _init.pde:

/****************************************************************************************
* digital i/o pin assignment
*
* this uses the undocumented feature of Arduino - pins 14-19 correspond to analog 0-5
****************************************************************************************/

//cartesian bot pins
#define X_STEP_PIN 2
#define X_DIR_PIN 3
#define X_MIN_PIN 4
#define X_MAX_PIN 9
#define X_ENABLE_PIN 15

then I would use this in StepperTest:

/*
 * Stepper
 *
 *
 * http://www.arduino.cc/
 */


int dirPin = 9;
int delayTime = 250;
int ledPin = 13;

int input;

void setup()                    // run once, when the sketch starts
{
  pinMode(X_STEP_PIN, OUTPUT);      // sets the digital pin as output
  pinMode(dirPin, OUTPUT);  
  pinMode(ledPin, OUTPUT); 
  digitalWrite(dirPin, HIGH);
  
  
  Serial.begin(9600);
  Serial.println("hei");
}

void loop()                     // run over and over again
{
  input = Serial.read();
  if(Serial.available()>0){
    Serial.println("duude");
    if(input==65){
       digitalWrite(dirPin, HIGH);
       digitalWrite(ledPin, HIGH);
    }
    if(input==66){
       digitalWrite(dirPin, LOW);
       digitalWrite(ledPin, LOW);
    }
    
    Serial.println(input);
  }
  
  digitalWrite(stepPin, HIGH);   // sets the step pin high
  delayMicroseconds(delayTime);              // waits for a given time
  digitalWrite(stepPin, LOW);    // sets the LED off
  delayMicroseconds(delayTime*1.5);                  // waits for a given time
}

then i am getting this error:

In function 'void setup()':
error: 'X_STEP_PIN' was not declared in this scope In function 'void loop()':

What am I doing wrong?

I would also like to modify the code to use the arrow keypad to test the stepper. Up= increase speed, Down = decrease speed, Left= turn clockwise , right = turn anti clockwise.

I guess this would be a nice sketch for people that just want to test their stepper motor...

Maybe later also add The following input: G0 X15 Which can help u calibrating the movement of the stepper.

The idea is to have a simple sketch to just ensure that the stepper motor works the way its suppose to, and only for one axis,

than later u can use the reprap code..

Any comments??

2

How is the sketch supposed to know about the file with the definitions in it? Do you have the mind reading attachment powered up and configured correctly?

3

with the pde and .h in the same place, add:

#include <filename.h>

to the top of the pde :slight_smile:

4

still get the same error....

5

Rename _init.pde to _init.h (this may not be strictly necessary but if the file only contains defines for the main sketch then .h is a more appropriate name).

In the main sketch, add:
#include "_init.h"

To get the sketch to compile, you need to modify the sketch file or header so that the names match, the sketch uses:
stepPin
but the header defines:
X_STEP_PIN