Updated Sketch (Nov. 15,2014)
// Released by abocanegra on Dec. 11, 2009 using 4 pins, "DIP Switch 8 Position to Address Sensor" in Arduino Forum
// This sketch uses VirtualWire
// Connect the Receiver data pin to Arduino pin 11
// Modified by Befun Hung on Nov. 14, 2014 by combining sketches on May. 11, 2014 (Arduino RF Wireless Message Display)
// and Jul. 30, 2014 (Use DIP Switch To Set Arduino Device Net ID And Node ID for Wireless Communication - Updated Sketch)
// and removing LCD Keypad Shield display function as a new sketch for Arduino addressable RF wireless power supply socket
// Modified by Befun Hung on Nov. 12, 2014 to use
// 4 digital pins(D2-D5) to set node ID1 and
// 4 digital pins(D6-D9) to set node ID2 by using 10K pull-up resistors.
// Totally 8x16x16=2,048 devices can be used for wireless communication
// For practical use 8x10x10=800 devices can be controlled using digital key of 3x4 telephone keypad
// Wire and DIP switch connections from high bit to low bit are A1, A2, A3, D2, D3, D4, D5, D6, D7, D8 and D9
// A0 is reserved for analog sensor or digital sensor/actuator
// A4-A5 are reserved for I2C
// D0-D1 are reserved for RX/TX
// D13 is used for singal output
// Don't run this sketch on Arduino Pro Mini, it may reboot repeatedly owing to bootloader not supporting watchdog
#include <VirtualWire.h>
// include avr/wdt for watchdog reset
#include <avr/wdt.h>
// include <EEPROM.h> to save switch staus to EEPROM
#include <EEPROM.h>
// keys to turn switch on and off
#define keyOn '*'
#define keyOff '#'
//Create and Define Global Variables
int bits=4, netID, nodeID1, nodeID2;
int dipNet[] = {15, 16, 17}; // DIP Switch Pins for Net ID
int dipNode1[] = {2, 3, 4, 5}; // DIP Switch Pins for Node ID1
int dipNode2[] = {6, 7, 8, 9}; // DIP Switch Pins for Node ID2
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
unsigned long counter = 1;
// digital pin 13 connected with a 1K resistor and a LED
int led = 13;
// Address of EEPROM for saving switch status and variable to store value
int address = 5;
int value;
void setup()
{
Serial.begin(9600);
int i;
pinMode(A1, INPUT);
pinMode(A2, INPUT);
pinMode(A3, INPUT);
netID = netAddress();
// delay(100);
Serial.print("Net ID: ");
Serial.println(netID);
for(i = 0; i<bits; i++){
pinMode(dipNode1[i], INPUT); // sets the digital pin 2-5 as input
}
nodeID1 = node1Address(bits);
// delay(100);
Serial.print("Node ID1: ");
Serial.println(nodeID1);
for(i = 0; i<bits; i++){
pinMode(dipNode2[i], INPUT); // sets the digital pin 2-5 as input
}
nodeID2 = node2Address(bits);
// delay(100);
Serial.print("Node ID2: ");
Serial.println(nodeID2);
Serial.println("Device is ready");
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
//initialize the digital 13 pin as output
pinMode(led, OUTPUT);
// When the receiver is unstable and reboot, reading stored status from EEPROM
value = EEPROM.read(address);
if (value == '1')
{
digitalWrite(led, HIGH);
}
if (value == '0')
{
digitalWrite(led, LOW);
}
}
void loop()
{
if (vw_get_message(message, &messageLength)) // Non-blocking
{
Serial.print(counter);
Serial.print(": ");
for (int i = 0; i < messageLength; i++)
{
Serial.write(message[i]);
}
// if length of received message is less than transmitter sent meaning the receiver is unstable
if (messageLength < 4)
{
software_Reboot();
}
else
{
// netID and nodeID are numbers and message is charactor array, so convention is required
if ((message[0] == (netID + '0')) && (message[1] == (nodeID1 + '0')) && (message[2] == (nodeID2 + '0')))
{
if (message[3] == keyOn)
{
digitalWrite(led, HIGH);
EEPROM.write(address, '1');
}
else
{
if (message[3] == keyOff)
{
digitalWrite(led, LOW);
EEPROM.write(address, '0');
}
}
}
}
Serial.println();
counter++;
}
}
// Software reboot function
void software_Reboot()
{
wdt_enable(WDTO_15MS);
while (1)
{
}
}
//Create Net Address from DIP Switch (3 positions used A1-A3)
byte netAddress(){
int i,j=0;
//Get the switches state
j = (j << 1) | (! digitalRead(A1)); // read the input pin
j = (j << 1) | (! digitalRead(A2)); // read the input pin
j = (j << 1) | (! digitalRead(A3)); // read the input pin
return j; //return address
}
//Create Node1 Address from DIP Switch (4 positions used D2-D5)
byte node1Address(int k){
int i,j=0;
//Get the switches state
for(i=0; i<k; i++){
j = (j << 1) | (! digitalRead(dipNode1[i])); // read the input pin
}
return j; //return address
}
//Create Node1 Address from DIP Switch (4 positions used D6-D9)
byte node2Address(int k){
int i,j=0;
//Get the switches state
for(i=0; i<k; i++){
j = (j << 1) | (! digitalRead(dipNode2[i])); // read the input pin
}
return j; //return address
}
Sketch
// Released by abocanegra on Dec. 11, 2009 using 4 pins, "DIP Switch 8 Position to Address Sensor" in Arduino Forum
// This sketch uses VirtualWire
// Connect the Receiver data pin to Arduino pin 11
// Modified by Befun Hung on Oct. 29, 2014 by combining sketches on May. 11, 2014 (Arduino RF Wireless Message Display)
// and Jul. 30, 2014 (Use DIP Switch To Set Arduino Device Net ID And Node ID for Wireless Communication)
// and removing LCD Keypad Shield display function as a new sketch for Arduino addressable RF wireless power socket
// The sketch uses 3 analog pins(A1-A3) to set net ID and 8 digital pins(D2-D9) to set node ID by using 10K pull-up resistors.
// Totally 8x256=2,048 devices can be used for wireless communication
// When using a 3x4 telephone keypad, 8x10(0-9)=80 devices can be used
// A0 is reserved for analog sensor or digital sensor/actuator
// A4-A5 are reserved for I2C
// D0-D1 are reserved for RX/TX
// D13 is used for singal output
#include <VirtualWire.h>
// include avr/wdt for watchdog reset
#include <avr/wdt.h>
// include <EEPROM.h> to save switch staus to EEPROM
#include <EEPROM.h>
// keys to turn switch on and off
#define keyOn '1'
#define keyOff '0'
//Create and Define Global Variables
int bits=8;
byte netID, nodeID;
int dipNet[] = {15, 16, 17}; //DIP Switch Pins for Net ID
int dipNode[] = {2, 3, 4, 5, 6, 7, 8, 9}; //DIP Switch Pins for Node ID
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
unsigned long counter = 1;
// digital pin 13 connected with a 1K resistor and a LED
int led = 13;
// Address of EEPROM for saving switch status and variable to store value
int address = 5;
int value;
void setup()
{
Serial.begin(9600);
int i;
pinMode(A1, INPUT);
pinMode(A2, INPUT);
pinMode(A3, INPUT);
netID = netAddress();
Serial.print("Net ID: ");
Serial.println(netID);
for(i = 0; i<bits; i++){
pinMode(dipNode[i], INPUT); // sets the digital pin 2-9 as input
}
nodeID = nodeAddress(bits);
Serial.print("Node ID: ");
Serial.println(nodeID);
Serial.println("Device is ready");
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
//initialize the digital 13 pin as output
pinMode(led, OUTPUT);
// When the receiver is unstable and reboot, reading stored status from EEPROM
value = EEPROM.read(address);
if (value == '1')
{
digitalWrite(led, HIGH);
}
if (value == '0')
{
digitalWrite(led, LOW);
}
}
void loop()
{
if (vw_get_message(message, &messageLength)) // Non-blocking
{
Serial.print(counter);
Serial.print(": ");
for (int i = 0; i < messageLength; i++)
{
Serial.write(message[i]);
}
// if length of received message is less than transmitter sent meaning the receiver is unstable
if (messageLength < 3)
{
software_Reboot();
}
else
{
// netID and nodeID are numbers and message is charactor array, so convention is required
if ((message[0] == (netID + '0')) && (message[1] == (nodeID + '0')))
{
if (message[2] == keyOn)
{
digitalWrite(led, HIGH);
EEPROM.write(address, '1');
}
else
{
if (message[2] == keyOff)
{
digitalWrite(led, LOW);
EEPROM.write(address, '0');
}
}
}
}
Serial.println();
counter++;
}
}
// Software reboot function
void software_Reboot()
{
wdt_enable(WDTO_15MS);
while (1)
{
}
}
//Create Net Address from DIP Switch (3 positions used)
byte netAddress(){
int i,j=0;
//Get the switches state
j = (j << 1) | (! digitalRead(A1)); // read the input pin
j = (j << 1) | (! digitalRead(A2)); // read the input pin
j = (j << 1) | (! digitalRead(A3)); // read the input pin
return j; //return address
}
//Create Node Address from DIP Switch (8 positions used D2 - D9)
byte nodeAddress(int k){
int i,j=0;
//Get the switches state
for(i=0; i<k; i++){
j = (j << 1) | (! digitalRead(dipNode[i])); // read the input pin
}
return j; //return address
}
