Transmitter
#include <VirtualWire.h>
int Sensor1Pin = A1;// The pins were sensor are attached
int Sensor2Pin = A2;
int Sensor3Pin = A3;
int Sensor4Pin = A4;
int ledPin = 13;
int Sensor1Data;// The variable were the data from each sensor
int Sensor2Data;// will be stored
int Sensor3Data;
int Sensor4Data;
char Sensor1CharMsg[21];// The string that we are going to send trought rf
void setup() {
// LED
pinMode(ledPin,OUTPUT);
// Sensor(s)
pinMode(Sensor1Pin,INPUT);
pinMode(Sensor2Pin,INPUT);
pinMode(Sensor3Pin,INPUT);
pinMode(Sensor4Pin,INPUT);
// VirtualWire setup
vw_setup(2000); // Bits per sec
vw_set_tx_pin(12);// Set the Tx pin. Default is 12
}
void loop() {
// Read and store Sensor Data
Sensor1Data = analogRead(Sensor1Pin);
Sensor2Data = analogRead(Sensor2Pin);
Sensor3Data = analogRead(Sensor3Pin);
Sensor4Data = analogRead(Sensor4Pin);
sprintf(Sensor1CharMsg, "%d,%d,%d,%d,", Sensor1Data, Sensor2Data, Sensor3Data, Sensor4Data);
// Turn on a light to show transmitting
vw_send((uint8_t *)Sensor1CharMsg, strlen(Sensor1CharMsg));
vw_wait_tx(); // Wait until the whole message is gone
// Turn off a light after transmission
delay(40);
}
and Receiver
#include <VirtualWire.h>
// Sensors
int Sensor1Data;
int Sensor2Data;
int SensorData3;
int SensorData4;
char StringReceived[22];
void setup() {
// VirtualWire
// Initialise the IO and ISR
// Required for DR3100
// Bits per sec
vw_setup(2000);
vw_set_rx_pin(11);
// Start the receiver PLL running
vw_rx_start();
} // END void setup
void loop(){
uint8_t buf[VW_MAX_MESSAGE_LEN];
uint8_t buflen = VW_MAX_MESSAGE_LEN;
//Taking the data from the control base
if (vw_get_message(buf, &buflen))
{
int i;
// Message with a good checksum received, dump it.
for (i = 0; i < buflen; i++)
{
// Fill Sensor1CharMsg Char array with corresponding
// chars from buffer.
StringReceived[i] = char(buf[i]);
}
sscanf(StringReceived, "%d,%d,%d,%d,%d,%d",&Sensor1Data, &Sensor2Data,&SensorData3,&SensorData4); // Converts a string to an array
// Turn off light to and await next message
}
memset( StringReceived, 0, sizeof( StringReceived));// This line is for reset the StringReceived
}
avec un arduino uno et atmega328p et RF 433MHz
