Trouble with receiving data on RP2040

[SilentWalker9]

The data received by the wireless module is not as expected. I name a certain data transmitter that sends them once every 10 seconds. The data contains 6 integer numbers. The problem is that on the receiver with arduino nano the data is received without any problems.

code for RP2040:

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

RF24 radio(14, 15);

const uint64_t pipes[2] = { 0xABCDABCD71LL, 0x544d52687CLL };

int datar[6];


void setup() {
  
  Serial.begin(115200);
  while (!Serial) {}
  printf_begin();
  if (!radio.begin()) {
    Serial.println(F("radio hardware is not responding!!"));
    }else {
    Serial.println("Radio OK!");

  }
  //radio.begin();                           // Setup and configure rf radio
  radio.setChannel(99);                     // Set the channel
  radio.setPALevel(RF24_PA_LOW);      
  radio.setDataRate(RF24_250KBPS);           // Raise the data rate to reduce transmission distance and increase lossiness
  radio.setAutoAck(0);                     // Ensure autoACK is enabled
  radio.setRetries(2, 15);       
  //radio.openWritingPipe(pipes[1]);         // Open the default reading and writing pipe
  radio.openReadingPipe(1, pipes[0]);
  radio.startListening();                 // Start listening
  radio.printDetails();
  radio.powerUp();                        //Power up the radio
}

void loop() {
  if (radio.available()) {
    radio.read(&datar, sizeof(datar));
    Serial.print(datar[0]);
    Serial.print(",");
    Serial.print(datar[1]);
    Serial.print(",");
    float h = datar[2];
    h = h / 100;
    Serial.print(h);
    Serial.print(",");
    float t = datar[3];
    t = t / 100;
    Serial.print(t);
    Serial.print(",");
    Serial.print(datar[4]);
    Serial.print(",");
    Serial.print(datar[5]);
    Serial.println();
  }
}

code for Arduino NANO:

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

RF24 radio(9, 10);

const uint64_t pipes[2] = { 0xABCDABCD71LL, 0x544d52687CLL };

int datar[6];


void setup() {
  
  Serial.begin(115200);
  while (!Serial) {}
  printf_begin();
  if (!radio.begin()) {
    Serial.println(F("radio hardware is not responding!!"));
    }else {
    Serial.println("Radio OK!");

  }
  //radio.begin();                           // Setup and configure rf radio
  radio.setChannel(99);                     // Set the channel
  radio.setPALevel(RF24_PA_LOW);      
  radio.setDataRate(RF24_250KBPS);           // Raise the data rate to reduce transmission distance and increase lossiness
  radio.setAutoAck(0);                     // Ensure autoACK is enabled
  radio.setRetries(2, 15);       
  //radio.openWritingPipe(pipes[1]);         // Open the default reading and writing pipe
  radio.openReadingPipe(1, pipes[0]);
  radio.startListening();                 // Start listening
  radio.printDetails();
  radio.powerUp();                        //Power up the radio
}

void loop() {
  if (radio.available()) {
    radio.read(&datar, sizeof(datar));
    Serial.print(datar[0]);
    Serial.print(",");
    Serial.print(datar[1]);
    Serial.print(",");
    float h = datar[2];
    h = h / 100;
    Serial.print(h);
    Serial.print(",");
    float t = datar[3];
    t = t / 100;
    Serial.print(t);
    Serial.print(",");
    Serial.print(datar[4]);
    Serial.print(",");
    Serial.print(datar[5]);
    Serial.println();
  }
}

Screenshot with proof. Both board connected to PC. On the right side Arduino NANO receiving data.

[2bndy5]

This is not a bug in RF24 library. What you are observing is called data misalignment. It usually happens when data is passed from 1 platform to another platform, especially when the memory alignment behaves differently for each platform. See our answer in the COMMON_ISSUES.md.