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[EmanEric]

Hey everyone! I have a question regarding the nrf24 transceiver module. I am trying to setup a two way communication system using ACK payloads between two modules. The Primary TX reads an anlaog value from pin 7 and transmits it to the primary receiver. The primary receiver then also reads the analog value from pin 7 and transmits it's value back to the transmitter. I have tried using th e library's examples, but they are quite complicated and have a lot of code which I don't need for my purpose. Only problem is that The values aren't sending or being received properly. It would be great if someone could see if it is obvious what I am doing wrong. Thanks!


Primary Transmitter code

Code: Select all

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

RF24 radio(7,8);
struct package
{
 int remotePotSlider = 0;
 int boardBatVoltage = 0;
};

byte adresses[][6] ={"0"};

typedef struct package Package;
Package data;





void setup() {
  Serial.begin(115200);
  radio.begin();
  radio.setRetries(15, 15);
  radio.setChannel(115);
  radio.setPALevel(RF24_PA_LOW);
  radio.setDataRate(RF24_250KBPS);
  radio.enableAckPayload();           
  radio.enableDynamicPayloads(); 
  radio.openWritingPipe(adresses[1]);
  radio.openReadingPipe(1,adresses[0]);
  
  delay(1000);

}

void loop() {
  data.remotePotSlider = analogRead(7);
  delay(20);

  
  if(radio.write(&data, sizeof(data)))
  {
      Serial.println("  transmitted successfully");
      
      if(!radio.available()){                             // If nothing in the buffer, we got an ack but it is blank
          Serial.println("Got blank response");
        }
        
      else{      
            while(radio.available() ){                      // If an ack with payload was received
                radio.read(&data, sizeof(data));  
                Serial.print("Ack payload is: ");
                Serial.print(data.boardBatVoltage);
                }
        }
  }
  else {
    Serial.println("Failed Sending");
  }
        
  delay(50);
        
        
 }

Primary Receiver code

Code: Select all

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

RF24 radio(7,8);
struct package
{
 int remotePotSlider = 0;
 int boardBatVoltage = 0;
};

byte adresses[][6] ={"0"};

typedef struct package Package;
Package data;





void setup() {
  Serial.begin(15200);
  radio.begin();
  radio.setRetries(15, 15);
  radio.setChannel(115);
  radio.setPALevel(RF24_PA_LOW);
  radio.setDataRate(RF24_250KBPS);
  radio.enableAckPayload();           
  radio.enableDynamicPayloads(); 
  radio.openWritingPipe(adresses[0]);
  radio.openReadingPipe(1,adresses[1]);
  radio.startListening();
  delay(1000);

}

void loop() {
  data.boardBatVoltage = analogRead(7);
  delay(20);
  
  while( radio.available()){              
      radio.read(&data,sizeof(data));                              
      Serial.println("Received potslider:");
      Serial.print(data.remotePotSlider);
      radio.writeAckPayload(1,&data,sizeof(data));  
      
   }
  
  delay(50);
  
}