arduino serial through processing

sitaramar

Dear friends,

I tried to read a simple serial data from arduino through processing.

Following is arduino code.

void setup()
{

  Serial.begin(9600);

}
void loop()
  {
             Serial.print("wise"); 
             delay(1000);
    }

It is working and I am getting " wise" on serial monitor(COM6) of arduino continueously.

Following is my processing code.

import processing.serial.*;
int portIndex = 0;

Serial myPort; 

void setup() {

  println(Serial.list());
  myPort = new Serial(this, Serial.list()[portIndex], 9600);

 }
void draw() {

  print(myPort.available());
 while (myPort.available() > 0) {
                                      int inByte = myPort.read();
                                     println(inByte);      
                                                   }
     print("hellow");
                      }

When I use port index =0; I am getting 0 value for myPort.available() function and "0hellow" is printed continuously in console are of processing.

When I use port index =4;as per ports list displayed in console window as per setup statements ( COM1 , COM 3, COM4, COM5,COM6), Nothing is printed and I am getting following message.
"Error opening serial port COM6: COM busy" along with ports list

"COM1 COM3 COM4 COM5 COM6"

Can you give me any suggestion please ?

K.Sitarama Rao,
Electronic Engineer and hobbyist

marcometro

If you have the COM monitor utility open in Arduino, I believe that Processing will show it as busy.

sitaramar

Thanks for immediate reply.

Now my program is working.

K.Sitarama Rao.