arduino interfacing with parallax rfid read/write module problem

[alex]

hello everyone….. i am having a problem with interfacing arduino to the parallax rfid read/write module…i want to write data in the tags but when i start to upload the codes to my arduino…. the serial monitor display.. error code 2… could not find listen windows(LIW)….here is the code i use comming from net…

 

#include <SoftwareSerial.h>



#define RFID_WRITE 0x02



#define txPin 6

#define rxPin 8





#define whichSpace 4





#define first 1



#define second 26



#define third 3



#define fourth 27





SoftwareSerial mySerial(rxPin, txPin);







void setup()

{



Serial.begin(9600);



Serial.println("RFID Write Test");



mySerial.begin(9600);



pinMode(txPin, OUTPUT);



pinMode(rxPin, INPUT);



}











void loop()

{



int val;



mySerial.print("!RW");



mySerial.write(byte(RFID_WRITE));



mySerial.write(byte(whichSpace));



mySerial.write(byte(first));



mySerial.write(byte(second));



mySerial.write(byte(third));



mySerial.write(byte(fourth));





if(mySerial.available() > 0)

{

val = mySerial.read();





if (val == 1)                                        //If data was written successfully



{ Serial.println("Data written succesfully!");





}

else Serial.println("ERROR");



}



delay(250);



}

 

i got it from the arduino tutorial…. i am seeking your help to shed some light in our project….thanks in advance hope someone will reply

 

[Author]

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