nRF24L01+ RXTX

teensy_30_TX

#include <SPI.h>
#include "nRF24L01.h"
#include "RF24.h"


// Teensy 3.0
#define CE_PIN    5
#define CS_PIN    10

// Config Radio (CEPin, CSPin)
RF24 radio(CE_PIN, CS_PIN);


// Radio transmit pipe addresses 
const uint64_t pipe = 0xE8E8F0F0E1LL;
int txdata[1] = {0xA5};


void setup() {
 
  Serial.begin(9600);
  Serial.println("Starting up RF24\n");
  delay(1000);
  
  radio.begin();

  // optionally, increase the delay between retries & # of retries
  radio.setRetries(15,1);

  // Serial.println("Setting up channel");
  radio.setChannel(115);
  radio.setPALevel(RF24_PA_MAX);
  radio.openWritingPipe(pipe);


}

void loop() {

  bool sent = false;
  
  sent = radio.write(txdata, sizeof(int));
  Serial.println();
  
  if(!sent){ Serial.println("ON Byte Tx Failure"); }
  delay(50);
  txdata[0] = 0x5A;
  sent = radio.write(txdata, sizeof(int));
  Serial.println();
    
  if(!sent){ Serial.println("OFF Byte Tx Failure"); }
  delay(100);
  txdata[0] = 0xA5;


}

teensy_31_rx

#include <stdio.h>
#include <RF24.h>
#include <SPI.h>


// Teensy 3.1
#define CE_PIN    9
#define CS_PIN    10
#define LED_PIN   3


// Config Radio (CEPin, CSPin)
RF24 radio(CE_PIN, CS_PIN);

// Radio transmit pipe addresses 
const uint64_t pipe = 0xE8E8F0F0E1LL;
int txdata;

void setup() {
  pinMode(LED_PIN, OUTPUT); 
  Serial.begin(9600);
  delay(1000);
  
  Serial.println("Starting up RF24\n");
    
  radio.begin();
  
  // optionally, increase the delay between retries & # of retries
  radio.setRetries(15,1);

  // Serial.println("Setting up channel");
  //radio.setPayloadSize(8);
  radio.setChannel(115);
  radio.setPALevel(RF24_PA_MAX);
  radio.openReadingPipe(1, pipe);
  //radio.setAutoAck(false);
  radio.startListening();
  digitalWrite(LED_PIN, LOW);
}

void loop() {
  
  //delay(2000);
  if(radio.available())
  {
      bool done = false;
      while(!done)
      {
          done = radio.read(&txdata, sizeof(int));
          if(txdata == 0xA5){ digitalWrite(LED_PIN, HIGH); }
          if(txdata == 0x5A){ digitalWrite(LED_PIN, LOW); }
      }
  }
  else
  {
      //Serial.println("No Radio Detected");
  }
}