nRF24l01, Arduino and Pi - delay

Projects Programming
5

I didn't change anything beside this. But ok, I can write the whole code again:

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

int msg[1];
RF24 radio(9,10);
const uint64_t pipe = 0xE8E8F0F0E1LL;

long previousMillis = 0;        
long interval = 1000; // ms

void setup(void)
{
  Serial.begin(9600);

  // WiFi
      radio.begin();
      radio.setRetries(15,15);
      radio.powerUp();
      radio.openWritingPipe(pipe); 
}

void loop(void)
{  
    msg[0] = 1;

    unsigned long currentMillis = millis();
    if(currentMillis - previousMillis > interval)
    {
      previousMillis = currentMillis;
      
      if(radio.write(msg, sizeof(int)))
      {
          Serial.println(msg[0]); 
      }
      else
      {
          Serial.println("Failed!"); 
      }       
    }    
}