nRF24 as Transceiver TXRX

[devmustafa20]

Hi everyone , i have the project to make communication between two phone by nRF24 with antenna and Bluetooth HC-05 .... I have programmed an Android application for messaging via Bluetooth HC-05 , what I want now is to program the Arduino so that I connect the Bluetooth and the nRF24 with the Arduino Uno, the application sends a text message to the HC-05 and then this message is sent through the nRF24 the nRF24 receiver!
I programmed it but there are several errors or maybe it is not right?
I hope to modify the code or guide me to something in order to complete the project.

this my code:

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

#include <rf24g.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <SoftwareSerial.h>

SoftwareSerial Serialb(7, 8);
char radiopacket[100]; 
char inChar;
byte index = 0; 
boolean test;

Adafruit_SSD1306 oled = Adafruit_SSD1306();

#define BUTTON_A 0
#define BUTTON_B 16
#define BUTTON_C 2
#define LED      0

#define RF24_FREQ 915.0

#define nRF24_INT     3  // 
#define nRF24_CS      4  //
#define nRF24_RST     2  // "A"

RF24 rf24(nRF24_CS, nRF24_INT);

void setup()
{
  delay(500);
  Serial.begin(115200);
  Serialb.begin(9600);
  pinMode(13, OUTPUT); 

  oled.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  oled.display();
  delay(500);
  oled.clearDisplay();
  oled.display();

  pinMode(BUTTON_A, INPUT_PULLUP);
  pinMode(BUTTON_B, INPUT_PULLUP);
  pinMode(BUTTON_C, INPUT_PULLUP);

  pinMode(LED, OUTPUT);     
  pinMode(nRF24_RST, OUTPUT);
  digitalWrite(nRF24_RST, LOW);

  
  Serial.println("Feather RFM69 RX/TX Test!");
  // manual reset
  digitalWrite(nRF24_RST, HIGH);
  delay(10);
  digitalWrite(nRF24_RST, LOW);
  delay(10);

   if (!rf24.int()) {
    Serial.println("RFM69 radio init failed");
    while (1);
  
  
  
  if (!rf24.setFrequency(RF24_FREQ)) {
    Serial.println("setFrequency failed");
  }

  rf24.setTxPower(14, true);
  uint8_t key[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
                    0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08};
  rf24.setEncryptionKey(key);
  {
  pinMode(LED, OUTPUT);
  Serial.print("nRF69 radio @"); 
  Serial.print((int)RF24_FREQ);  
  Serial.println("MHz");
  }
  oled.setTextSize(2);
  oled.setTextColor(WHITE);
  oled.setCursor(0,0);
  oled.println("NRF24 @ ");
  oled.print((int)RF24_FREQ);
  oled.println(" MHz");
  oled.display();

  delay(500);
}



void loop()
{  
  if (rf24.waitAvailableTimeout(100)) {
    uint8_t buf[NRF24_MAX_MESSAGE_LEN];
    uint8_t len = sizeof(buf);
    
    if (! rf24.recv(buf, &len)) {
      Serial.println("Receive failed");
      return;
    }
    digitalWrite(LED, HIGH);
    rf24.printBuffer("Received: ", buf, len);
    buf[len] = 0;
   
    
    Serial.print("Got: "); Serial.println((char*)buf);
    Serial.print("RSSI: "); Serial.println(rf24.lastRssi(), DEC);
     String t=(char*)buf;
    Serialb.println((char*)buf);   

    oled.clearDisplay();
    oled.setCursor(0,0);
    oled.println((char*)buf);
    oled.print("RSSI: "); oled.print(rf24.lastRssi());
    oled.display(); 
    digitalWrite(LED, LOW);
  }
    while(Serialb.available() > 0
  {
      if(index < 99)
      {
          inChar = Serialb.read(); 
          radiopacket[index] = inChar; 
          index++; 
          radiopacket[index] = '\0'; 
      }
      test=true;
  }
    if(index>0 && test==true)
{
    Serial.print("Sending "); Serial.println(radiopacket);
    rf24.send((uint8_t *)radiopacket, strlen(radiopacket));
    rf24.waitPacketSent();
      
  if(inChar == '1')           
      digitalWrite(13, HIGH);  
    else if(inChar == '0')     
      digitalWrite(13, LOW);   
      test=false;
 index=0;    
}}

[6v6gt]

@devmustafa20

rf24.send((uint8_t *)radiopacket, strlen(radiopacket));

The maximum transmission size for the nrf24L01 is 32 bytes. radiopacket is a 100 byte buffer.
Anyway , if you are building a communications chain: smartphone-Bluetooth-nrf24L01 -- nrf24L01- Bluetooth - smartphone, then start with testing the individual links first, then join it all up.

[mrburnette]

PLEASE DO NOT CrossPost !!!

nRF24L01 as Transceiver TXRX - Using Arduino / Programming Questions - Arduino Forum