This is a really basic problem, but I haven't been able to resolve it myself and would really appreciate the help. So I've been struggling for a few weeks now to set up RF communication between two arduino uno chips. I have the transmitter and receiver hooked up to 5V supply, with the data pins connected to digital pin 4. My code looks like this:
Transmitter code:
#define rfTransmitPin 4 //RF Transmitter pin = digital pin 4
#define ledPin 13 //Onboard LED = digital pin 13
unsigned int data = 0; // variable used to store transmission data
void setup(){
pinMode(rfTransmitPin, OUTPUT);
pinMode(ledPin, OUTPUT);
Serial.begin(9600);
}
void loop(){
digitalWrite (rfTransmitPin, HIGH);
data = digitalRead (rfTransmitPin); // Read the digital transmitter pin
Serial.println(data);
digitalWrite (ledPin, HIGH);
delay(2000);
digitalWrite (rfTransmitPin, LOW);
data = digitalRead (rfTransmitPin); // Read the digital transmitter pin
Serial.println(data);
digitalWrite (ledPin, LOW);
delay(2000);
}
Receiver code:
#define rfReceivePin 4 //RF Receiver pin = digital pin 4
#define ledPin 13 //Onboard LED = digital pin 13
unsigned int data = 0; // variable used to store received data
void setup(){
pinMode(ledPin, OUTPUT);
pinMode(rfReceivePin, INPUT);
Serial.begin(9600);
}
void loop(){
data=digitalRead(rfReceivePin); //listen for data on Digital Pin 4
if(data = HIGH){
digitalWrite(ledPin, HIGH); //If a HIGH signal is received, turn LED ON
Serial.println(data);
}
if(data = LOW){
digitalWrite(ledPin, LOW); //If a LOW signal is received, turn LED OFF
Serial.println(data);
}
}
This should be really simple, but for some reason I'm reading a continual HIGH signal from the receiver module. I'm trying to sort out the basic functionality of the RF tx-rx pair before developing code to send a char using the Virtual Wire library, but I can't even get it to function at this level. Since my code is so basic I'm convinced it must be a hardware issue and I'm not sure what I'm doing wrong. Any suggestions?
