NRF24L01 example code with Arduino Uno and OpenCM

Projects Programming
12

Yes by luck that code worked on UNO but not on OpenCM.

Yes here is the code
Transmitter:

/*
        DIY Arduino based RC Transmitter
  by Dejan Nedelkovski, www.HowToMechatronics.com
  Library: TMRh20/RF24, https://github.com/tmrh20/RF24/
*/

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

//===============Button======================
int buttonPin1=7;
int buttonPin2=4;
int buttonVal1;
int buttonVal2;
int DXLpos=0;
int dt=10;
unsigned long currentT, previousT=0;
//====================================================

RF24 radio(8, 10);   // nRF24L01 (CE, CSN) for UNO
//RF24 radio(16, 17);   // nRF24L01 (CE, CSN)for OpenCM
const byte address[6] = "00001"; // Address

unsigned long lastReceiveTime = 0;
unsigned long currentTime = 0;

// Max size of this struct is 32 bytes - NRF24L01 buffer limit
struct Data_Package {
  byte DXPos;
};

Data_Package data; //Create a variable with the above structure
  
void setup() {
  Serial.begin(115200);

    //=====================================================
  pinMode(buttonPin1,INPUT);
  pinMode(buttonPin2,INPUT);
  //=========================================================
  
 // Define the radio communication
  radio.begin();
  radio.openWritingPipe(address);
  radio.setAutoAck(false);
  radio.setDataRate(RF24_250KBPS);
  radio.setPALevel(RF24_PA_LOW);

  resetData();
}
void loop() {

buttonVal1=digitalRead(buttonPin1);
buttonVal2=digitalRead(buttonPin2);
 
if (buttonVal1==0){
  DXLpos=DXLpos+1;
}
if (buttonVal2==0){
  DXLpos=DXLpos-1;
}
if (DXLpos>250){
  DXLpos=250;
  
}
if (DXLpos<0){
  DXLpos=0;
}
//====================================================================

  data.DXPos=DXLpos;
  radio.stopListening();
  // Send the whole data from the structure to the receiver
  radio.write(&data, sizeof(Data_Package));

Serial.print("B1 = ");
Serial.print(buttonVal1);
Serial.print(", ");
Serial.print("B2 = ");
Serial.print(buttonVal2);
Serial.print(", ");
Serial.print("DXL = ");
Serial.print(DXLpos);
Serial.print(", ");
Serial.println(data.DXPos);
}

void resetData() {
  // Reset the values when there is no radio connection - Set initial default values
 Serial.println("No data available");   
}

Receiver:

/*
    DIY Arduino based RC Transmitter Project
              == Receiver Code ==

  by Dejan Nedelkovski, www.HowToMechatronics.com
  Library: TMRh20/RF24, https://github.com/tmrh20/RF24/
*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

RF24 radio(16, 17);   // nRF24L01 (CE, CSN) // CE, CSN //SCK->13, MOSI->11, MISO->12 FOr UNO  
const byte address[6] = "00001";

unsigned long lastReceiveTime = 0;
unsigned long currentTime = 0;

// Max size of this struct is 32 bytes - NRF24L01 buffer limit
struct Data_Package {
 byte DXPos;
};

Data_Package data; //Create a variable with the above structure

void setup() {
   Serial.begin(115200);
  radio.begin();
  radio.openReadingPipe(1, address);
  radio.setAutoAck(false);
  radio.setDataRate(RF24_250KBPS);
  radio.setPALevel(RF24_PA_LOW);
  radio.startListening(); //  Set the module as receiver
  resetData();
}
void loop() {
  // Check whether there is data to be received
  if (radio.available()) {
    radio.read(&data, sizeof(Data_Package)); // Read the whole data and store it into the 'data' structure
    lastReceiveTime = millis(); // At this moment we have received the data
  }
  
  // Check whether we keep receving data, or we have a connection between the two modules
  currentTime = millis();
  if ( currentTime - lastReceiveTime > 10000 ) { // If current time is more then (10000)1 second since we have recived the last data, that means we have lost connection
    resetData(); // If connection is lost, reset the data. It prevents unwanted behavior, for example if a drone has a throttle up and we lose connection, it can keep flying unless we reset the values
  }
  Serial.print("DXL: ");
  Serial.println(data.DXPos);   
}

void resetData() {
  // Reset the values when there is no radio connection - Set initial default values
 Serial.println("No data available");   
}