I'm not getting exact o/p in my nRF24L01 receiver side.

Projects Programming
1

This is my Transmitter side. here i want to send some alpha numeric data to my receiver side through nRF24L01. but the receiver is getting only the 1st two data. plz any body help me.

//TXT

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

RF24 radio(7, 8);

const byte rxAddr[6] = "00001";

void setup() {
  
  Serial.begin (9600);
  radio.begin ();
  radio.setRetries (15, 15);
  radio.openWritingPipe (rxAddr);
  radio.setPayloadSize(32);

  radio.stopListening();
  
}

void loop() 
{
  
  const char data[] = " 0.0000000e+00,   -2.0000000e+03,   7.0000000e+04,   5.2500000e+04,   0.0000000e+00, 7.4902610e-07,  -2.2500123e-03,  -1.9999939e+03,   6.9999924e+04,   5.2500034e+04,   7.9086928e-03";  
  Serial.println(data);
  radio.write(&data, sizeof(data));
  
  delay(1000);

}

Receiver side

 //RXT
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

RF24 radio(7,8);

const byte rxAddr[6] = "00001";

void setup() {

  while (!Serial);
  Serial.begin (9600);
  radio.begin();
  radio.openReadingPipe(0, rxAddr);
  radio.setPayloadSize(32);
  
  radio.startListening();
  
}

void loop() {
  {
    if (radio.available())
    {
      char data[32] = {0};
      radio.read(&data, sizeof(data));

      Serial.println(data);
      delay(1000);
    }
  }
}
2

You can transmit a maximum of 32 bytes in an nrf24l01 message. You have to split it your string up into smaller chunks.

3

This Simple nRF24L01+ Tutorial may be of interest.

If you send those floating point values in their binary format they will each only take 4 bytes and there will be no need for comma separators.

I suggest you create an array of floats and send that. Obviously you must have a matching array on the recieving side.

If you need to mix data types use a struct.

...R