Stap 3: Code
De RadioHead bibliotheek Download en installeer het.
Deze code uploaden naar elk van de Arduino boards arduino boards:
#include <SPI.h>#include <RH_NRF24.h>// Singleton instance of the radio driver RH_NRF24 nrf24;int greenLed = 3; int redLed = 4; int button = 5;void setup() { Serial.begin(9600); pinMode(greenLed, OUTPUT); pinMode(redLed, OUTPUT); pinMode(button, INPUT); while (!Serial) ; // wait for serial port to connect. Needed for Leonardo only if (!nrf24.init()) Serial.println("init failed"); // Defaults after init are 2.402 GHz (channel 2), 2Mbps, 0dBm if (!nrf24.setChannel(1)) Serial.println("setChannel failed"); if (!nrf24.setRF(RH_NRF24::DataRate2Mbps, RH_NRF24::TransmitPower0dBm)) Serial.println("setRF failed"); }void loop() { if (digitalRead(button)) { //button is pressed, message should be sent, turn the green LED on digitalWrite(greenLed, HIGH); // Send a message uint8_t data[] = "Aloha"; nrf24.send(data, sizeof(data)); nrf24.waitPacketSent(); digitalWrite(greenLed, LOW); } else { // Wait for a message uint8_t buf[RH_NRF24_MAX_MESSAGE_LEN]; uint8_t len = sizeof(buf); while (nrf24.waitAvailableTimeout(200) && nrf24.recv(buf, &len)) { //something was received, turn the right LED on digitalWrite(redLed, HIGH); } digitalWrite(redLed, LOW); } }