Hello sir. Let me share what i did so far.
i am trying to control the stepper motor with an IC of l298N which i did myself on the breadboard. I already try it and it is working fine. I did try with the sample of one revolution from the arduino.
My problem here is that i have to control it using labview. I wanted to do a simple coding before interfacing it in my final prototype and GUI.
i am trying to say an angle and then the motor has to move accordingly. I also have got the sample vi on the labview example.
Using LIFA, i try to upload and edit the code. I dont know how to upload it. should i take snapshot.
/*********************************************************************************
**
** LVFA_Firmware - Provides Basic Arduino Sketch For Interfacing With LabVIEW.
**
** Written By: Sam Kristoff - National Instruments
** Written On: November 2010
** Last Updated: Dec 2011 - Kevin Fort - National Instruments
**
** This File May Be Modified And Re-Distributed Freely. Original File Content
** Written By Sam Kristoff And Available At www.ni.com/arduino.
**
*********************************************************************************/
/*********************************************************************************
**
** Includes.
**
********************************************************************************/
// Standard includes. These should always be included.
#include <Wire.h>
#include <SPI.h>
#include <Servo.h>
#include <Stepper.h>
#include "LabVIEWInterface.h"
const int stepsPerRevolution = 150; // change this to fit the number of steps per revolution
// for your motor
// initialize the stepper library on pins 8 through 11:
Stepper myStepper(stepsPerRevolution, 8,9,10,11);
int pic16f877 =3;
int L293D=4;
int pic16f877_state;
int L293D_state;
int posit;
/*********************************************************************************
** setup()
**
** Initialize the Arduino and setup serial communication.
**
** Input: None
** Output: None
*********************************************************************************/
void setup()
{
// Initialize Serial Port With The Default Baud Rate
syncLV();
// Place your custom setup code here
// set the speed at 60 rpm:
myStepper.setSpeed(80);
pinMode(pic16f877,OUTPUT);
pinMode(L293D,OUTPUT);
digitalWrite(pic16f877,LOW);
digitalWrite(L293D,LOW);
}
/*********************************************************************************
** loop()
**
** The main loop. This loop runs continuously on the Arduino. It
** receives and processes serial commands from LabVIEW.
**
** Input: None
** Output: None
*********************************************************************************/
void loop()
{
// Check for commands from LabVIEW and process them.
pic16f877_state = digitalRead(pic16f877);
L293D_state = digitalRead(L293D);
checkForCommand();
// Place your custom loop code here (this may slow down communication with LabVIEW)
if(pic16f877_state==HIGH)
{
if(posit==0)
{
myStepper.step(stepsPerRevolution);
posit=1;
}
if(posit==2)
{
myStepper.step(-stepsPerRevolution);
posit=1;
}
}
if(L293D_state==HIGH)
{
if(posit==0)
{
myStepper.step(stepsPerRevolution);
myStepper.step(stepsPerRevolution);
posit=2;
}
if(posit==1)
{
myStepper.step(stepsPerRevolution);
posit=2;
}
}
if(acqMode==1)
{
sampleContinously();
}
}
