i took this code from the aruino website,
/* Read Jostick
* ------------
*
* Reads two analog pins that are supposed to be
* connected to a jostick made of two potentiometers
*
* We send three bytes back to the comp: one header and two
* with data as signed bytes, this will take the form:
* Jxy\r\n
*
* x and y are integers and sent in ASCII
*
* http://www.0j0.org | http://arduino.berlios.de
* copyleft 2005 DojoDave for DojoCorp
*/
int ledPin = 13;
int joyPin1 = 0; // slider variable connecetd to analog pin 0
int joyPin2 = 1; // slider variable connecetd to analog pin 1
int value1 = 0; // variable to read the value from the analog pin 0
int value2 = 0; // variable to read the value from the analog pin 1
void setup() {
pinMode(ledPin, OUTPUT); // initializes digital pins 0 to 7 as outputs
beginSerial(9600);
}
int treatValue(int data) {
return (data * 9 / 1024) + 48;
}
void loop() {
// reads the value of the variable resistor
value1 = analogRead(joyPin1);
// this small pause is needed between reading
// analog pins, otherwise we get the same value twice
delay(100);
// reads the value of the variable resistor
value2 = analogRead(joyPin2);
digitalWrite(ledPin, HIGH);
delay(value1);
digitalWrite(ledPin, LOW);
delay(value2);
serialWrite('J');
serialWrite(treatValue(value1));
serialWrite(treatValue(value2));
serialWrite(10);
serialWrite(13);
}
and it gives this error code when i try to verify
sketch_jul20a.cpp: In function 'void setup()':
sketch_jul20a:24: error: 'beginSerial' was not declared in this scope
sketch_jul20a.cpp: In function 'void loop()':
sketch_jul20a:44: error: 'serialWrite' was not declared in this scope
can anyone advise me on what i need to do to correct it?
many thanks
