nRF24L01 sending float values

Using Arduino Programming Questions
1

Can I send float structure via nRF24L01 module?
I send this:
struct DaneTemp {
float tempL;
float tempR;
float temp;
} daneTemp;

but my reciver reads value 0.00 when I read value of temp variable.
Should I somehow convert it to bytes?

2

Yes you can as long as the total number of bytes does not exceed 32

Which Arduino board are you using ?

Please post both sketches, using code tags when you do

3

I send data from Arduino Uno to Arduino Nano Every.
Transmiter:

# include <Wire.h>
# include <OneWire.h>
# include <DallasTemperature.h>
# include <LiquidCrystal_I2C.h>

#include <SPI.h>
#include "RF24.h"
#include "nRF24L01.h"
#define RFCE 9
#define RFCSN 10
RF24 radio(RFCE, RFCSN);  //nRF24L01
const byte AddressTempIn[6] = "Temp1n"; 
const byte AddressTempOut[6] = "Temp1o";

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

struct DaneTemp {
  float tempL;
  float tempR;
  float temp;
} daneTemp;

LiquidCrystal_I2C lcd(0x27, 16, 4);


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

  sensors.begin();

  radio.begin();
  radio.setPALevel(RF24_PA_HIGH);
  radio.setDataRate(RF24_1MBPS);
  radio.setChannel(1);
  radio.setAutoAck(1);
  radio.setRetries(2, 15);
  radio.setCRCLength(RF24_CRC_8);
  radio.openWritingPipe(AddressTempOut);
  radio.openReadingPipe(1, AddressTempIn); 
  
  delay(500);
  
}

void loop() {
  radio.stopListening();

  sensors.requestTemperatures();
  daneTemp.tempL = sensors.getTempCByIndex(0);
  daneTemp.tempR = sensors.getTempCByIndex(1);
  daneTemp.temp = (daneTemp.tempL + daneTemp.tempR) / 2;
  
  Serial.println(daneTemp.temp);

  radio.openWritingPipe(AddressTempOut);
  delay(10);
  radio.write(&daneTemp, sizeof(DaneTemp));
  delay(100);
}

Receiver:

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

#define RFCE 9
#define RFCSN 10
RF24 radio(RFCE, RFCSN);  //nRF24L01
const byte AddressTempIn[6] = "Tem1o";
const byte AddressTempOut[6] = "Tem1n";
struct DaneTemp {
  float tempL;
  float tempR;
  float temp;
} daneTemp;


Servo serwoL;

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

  radio.begin();
  radio.setPALevel(RF24_PA_HIGH);
  radio.setDataRate(RF24_1MBPS);
  radio.setChannel(1);
  radio.setAutoAck(1);
  radio.setRetries(12, 15);
  radio.setCRCLength(RF24_CRC_8);
  radio.openWritingPipe(AddressTempOut);
  radio.openReadingPipe(1, AddressTempIn);
  radio.startListening();
  delay(500);

  Serial.write("Started\n");

  serwoL.attach(5);
  serwoL.write(0);
  delay(1000);
}

void loop() {
  
  radio.startListening();
  if (radio.available()) {
    Serial.println("OK");
    radio.read(&daneTemp, sizeof(DaneTemp));

    
    if (daneTemp.temp < 18) {
      Serial.println("ok_1");
      serwoL.write(0);
      delay(500);
    }
    if (daneTemp.temp > 22.5) {
      Serial.println("ok_11");
      serwoL.write(10);
      delay(500);
    }
}
}
4

I don't see anything connected to printing to an LCD..???

5

Please post the code that actually demonstrates this.

6

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