// // SparkFun Electronics 2011// NPoole//// RF ASK
Transmitter/Reciever Example//// This code depends on the
VirtualWire Library for Arduino and is// based on the example code
provided by Mike McCauley ([email protected])// See VirtualWire.h
for detailed API docs. //// This example shows how to use the
VirtualWire library to send and receive// simple messages and use
them to control digital I/O pins. Buttons are // connected to the
transmitting Arduino on pins 8-11 (to ground, internal 20k//
pull-up resistors are set in the code) and in the same fashion,//
LEDs are connected to the recieving Arduino on pins 8-11. When a
button is// pressed on the transmitter, the corresponding LED will
light on the reciever.// This document contains both transmitter
and reciever code, simply de-comment // the piece of code you need
to use./* TRANSMITTER CODE#include void setup(){
Serial.begin(9600); // Debugging only Serial.println("setup"); //
Initialise the IO and ISR vw_set_ptt_inverted(true); // Required
for DR3100 vw_setup(2000); // Bits per sec vw_set_tx_pin(3);
pinMode(8, INPUT); pinMode(9, INPUT); pinMode(10, INPUT);
pinMode(11, INPUT);digitalWrite(8, HIGH);digitalWrite(9,
HIGH);digitalWrite(10, HIGH);digitalWrite(11, HIGH);}void loop(){
char *msg; if(digitalRead(8) == LOW){ char *msg = "1";
digitalWrite(13, true); // Flash a light to show transmitting
vw_send((uint8_t *)msg, strlen(msg)); vw_wait_tx(); // Wait until
the whole message is gone digitalWrite(13, false);}
if(digitalRead(9) == LOW){ char *msg = "2"; digitalWrite(13, true);
// Flash a light to show transmitting vw_send((uint8_t *)msg,
strlen(msg)); vw_wait_tx(); // Wait until the whole message is gone
digitalWrite(13, false);} if(digitalRead(10) == LOW){ char *msg =
"3"; digitalWrite(13, true); // Flash a light to show transmitting
vw_send((uint8_t *)msg, strlen(msg)); vw_wait_tx(); // Wait until
the whole message is gone digitalWrite(13, false);}
if(digitalRead(11) == LOW){ char *msg = "4"; digitalWrite(13,
true); // Flash a light to show transmitting vw_send((uint8_t
*)msg, strlen(msg)); vw_wait_tx(); // Wait until the whole message
is gone digitalWrite(13, false);} } END TRANSMITTER CODE */
//*******************************************************************************************//
/* RECIEVER CODE #include void setup(){ Serial.begin(9600); //
Debugging only Serial.println("setup"); // Initialise the IO and
ISR vw_set_ptt_inverted(true); // Required for DR3100
vw_setup(2000); // Bits per sec vw_set_rx_pin(2); vw_rx_start(); //
Start the receiver PLL runningpinMode(8, OUTPUT);pinMode(9,
OUTPUT);pinMode(10, OUTPUT);pinMode(11, OUTPUT);}void loop(){
digitalWrite(8, LOW); digitalWrite(9, LOW); digitalWrite(10, LOW);
digitalWrite(11, LOW); uint8_t buf[VW_MAX_MESSAGE_LEN]; uint8_t
buflen = VW_MAX_MESSAGE_LEN; if (vw_get_message(buf, &buflen))
// Non-blocking {int i; digitalWrite(13, true); // Flash a light to
show received good message// Message with a good checksum received,
dump it.Serial.print("Got: ");for (i = 0; i < buflen; i++){
Serial.print(buf[i]); if(buf[i] == '1'){digitalWrite(8, HIGH);}
if(buf[i] == '2'){digitalWrite(9, HIGH);} if(buf[i] ==
'3'){digitalWrite(10, HIGH);} if(buf[i] == '4'){digitalWrite(11,
HIGH);} Serial.print(" ");}Serial.println(""); digitalWrite(13,
false); }}
