Arduino Class "does not name a type"

Question

I am currently making a class in order to control 3 DC motors and in Arduino

and i create 4 object in Arduino (main) Here is the code:

but when i run this code lot of errors occurs like this

'elevator' does not name a type
'elv1' was not declared in this scope
'elv2' was not declared in this scope
'elv3' was not declared in this scope
'elv4' was not declared in this scope

So, I would expect some help from people here, regarding how can I make my class work.

Thank you in advance

this is my code

elevator.h:

#ifndef elevator_H
#define elevator_H

class elevator { 
    public:
        int pos(int swa, int swb,int swc ,int swd);
        void forwardDC(int A11,int A22);
        void reverseDC(int A11,int A22);
        void Breaking(int A11,int A22);
        void stopDC(int A11,int A22);
        char dir;
};

#endif

and this is elevator.cpp:

#include "Arduino.h"
#include "elevator.h"

int elevator::pos(int swa ,int swb ,int swc ,int swd) {
    int flag =0;
    if (flag >= 4)
        flag = 0;
    if (digitalRead(swa) == HIGH)
        flag = 1;
    if (digitalRead(swb) == HIGH)
        flag = 2;
    if (digitalRead(swc) == HIGH)
        flag = 3;
    if (digitalRead(swd) == HIGH)
        flag = 4;
    return flag;
}

void elevator::forwardDC(int A11,int A22) {
    digitalWrite(A1, LOW);
    digitalWrite(A2, HIGH);
    elevator::dir = 'F';
    delay(1000);
}

this declaration in Arduino (.ino):

#include <elevator.h>

elevator elv1;
elevator elv2;
elevator elv3;
elevator elv;

Maybe you should pass an argument to the #include directive. — Matthias
– Matthias, Commented Jul 5, 2013 at 19:11
I'm so sooryI can't understand you . you mean like this #include elv1 ?? — Eman Ali
– Eman Ali, Commented Jul 5, 2013 at 19:24
where did you save the elevator.h and elevator.cpp files? If they are in the same directory as the .ino you shall include the header using #include "elevator.h". Otherwise, you shall put them in a directory in the ~/Documents/Arduino/libraries directory (or the equivalent one you use). Your problem means that the arduino IDE is not finding the header (or worst, it finds another header..) — zmo
– zmo, Commented Jul 5, 2013 at 22:53

Peter B · Accepted Answer · 2014-03-02 15:08:04Z

1

When you use

#include <elevator.h>

it implies a library from the libraries folder. Instead, try

#include "elevator.h"

answered Mar 2, 2014 at 15:08

Peter B

6231 gold badge8 silver badges18 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

RobertoAV96 · Accepted Answer · 2013-08-06 15:49:31Z

0

You have to add the function to create a new elevator variable.

In elevator.h:

public:
  elevator();
  ...

In elevator.cpp:

elevator::elevator() {
}

answered Aug 6, 2013 at 15:49

RobertoAV96

6,0434 gold badges18 silver badges13 bronze badges

Collectives™ on Stack Overflow

Arduino Class "does not name a type"

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related