NRF with multiple transmitters - IMU units

Projects Networking, Protocols, and Devices
30

I tested again the following:

Send data with the Transmitter using address "30000" works when I select pipe 1 and pipe 2 as destination, but when I assign it to pipe 3, there is no data received, but I see that the transmitter is sending it. However, when I use only pipe 3 in the receiver, the data is also received.

It seems like the only time that is not working is when I create more than two conditions to send the data (on the receiver code below), when is just between pipe 1 and pipe 2 it works, but not when adding pipe 3.

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

//NRF wireless communication setup
RF24 radio(9, 8); //CE, CSN pins
const byte imu1[6] = "10000";
const byte imu2[6] = "20000";
const byte imu4[6] = "30000";
float timeVal =0;
int lup =0;

typedef struct 
 { 
 float yawTemp = 0, pitchTemp = 0, rollTemp= 0;
 float az = 0, ay = 0, ax = 0, rate= 0, ID =0;
 }dataPack1;
dataPack1 package1;      

typedef struct 
 { 
 float yawTemp = 0, pitchTemp = 0, rollTemp= 0;
 float az = 0, ay = 0, ax = 0, rate= 0, ID =0;
 }dataPack2;
dataPack2 package2;   

typedef struct 
 { 
 float yawTemp = 0, pitchTemp = 0, rollTemp= 0;
 float az = 0, ay = 0, ax = 0, rate= 0, ID =0;
 }dataPack4;
dataPack4 package4;   

void setup()
{
 Serial.begin(57600);
 //Initializing the NRF to transmitting mode
 radio.begin();
 radio.setDataRate(RF24_2MBPS);     //while communicating with multiple nrf set datarate for both Tx and Rx "radio.setDataRate(RF24_2MBPS)"
 radio.openReadingPipe(1, imu1);    //Radio.openReadingPipe(pipe number, address)
 radio.openReadingPipe(2, imu2);    //Radio.openReadingPipe(pipe number, address)
 radio.openReadingPipe(3, imu4);    //Radio.openReadingPipe(pipe number, address)
 radio.setPALevel(RF24_PA_MIN);     //speed  RF24_250KBPS for 250kbs, RF24_1MBPS for 1Mbps, or RF24_2MBPS for 2Mbps
 radio.startListening();  
 Serial.print("Time(s), yaw(º), pitch(º), roll(º), az(g), ay(g), ax(g), TIMEZZ, Hz");

}
void loop()
{
     uint8_t pipe1 = 1, pipe2 = 2, pipe3 = 3; //this is  a datatype similar to "byte" datatype
     timeVal = millis()*0.001;

     //if (lup == 0)
     //{
     //NRF data recieve
     if (radio.available(&pipe1))
     //this will point if the data is available from pipe 1
     {
             if (pipe1 == 1)
             {
             lup =1;
             radio.read(&package1, sizeof(package1));
             Serial.print(timeVal, 2); 
             Serial.print(","); Serial.print(package1.yawTemp,1);
             Serial.print(","); Serial.print(package1.pitchTemp,1);
             Serial.print(","); Serial.print(package1.rollTemp,1);
             //Serial.print(","); Serial.print(package1.az,2);
             //Serial.print(","); Serial.print(package1.ay,2);
             //Serial.print(","); Serial.print(package1.ax,2);
             //Serial.print(","); Serial.print(package1.timer,2);
             Serial.print(","); Serial.print(package1.rate,2);
             Serial.print(","); Serial.print(package1.ID,2);
             Serial.print("\t"); 
             Serial.print(","); Serial.print(package2.yawTemp,1);
             Serial.print(","); Serial.print(package2.pitchTemp,1);
             Serial.print(","); Serial.print(package2.rollTemp,1);
             //Serial.print(","); Serial.print(package2.az,2);
             //Serial.print(","); Serial.print(package2.ay,2);
             //Serial.print(","); Serial.print(package2.ax,2);
             //Serial.print(","); Serial.print(package2.timer,2);
             Serial.print(","); Serial.print(package2.rate,2);
             Serial.print(","); Serial.print(package2.ID,2); 
             Serial.print(","); Serial.print(package4.yawTemp,1);
             Serial.print(","); Serial.print(package4.pitchTemp,1);
             Serial.print(","); Serial.print(package4.rollTemp,1);
             //Serial.print(","); Serial.print(package4.az,2);
             //Serial.print(","); Serial.print(package4.ay,2);
             //Serial.print(","); Serial.print(package4.ax,2);
             //Serial.print(","); Serial.print(package4.timer,2);
             Serial.print(","); Serial.print(package4.rate,2);
             Serial.print(","); Serial.print(package4.ID,2);
             Serial.print(" "); Serial.println(lup);
             }
          }
          //lup = lup + 1;
   //}
   //else if (lup == 0)  
    if (radio.available(&pipe2))
    {
       if (pipe2 == 2)
       {
       lup =2;
       radio.read(&package2, sizeof(package2));
       Serial.print(timeVal, 2); 
       Serial.print(","); Serial.print(package1.yawTemp,1);
       Serial.print(","); Serial.print(package1.pitchTemp,1);
       Serial.print(","); Serial.print(package1.rollTemp,1);
       //Serial.print(","); Serial.print(package1.az,2);
       //Serial.print(","); Serial.print(package1.ay,2);
       //Serial.print(","); Serial.print(package1.ax,2);
       //Serial.print(","); Serial.print(package1.timer,2);
       Serial.print(","); Serial.print(package1.rate,2);
       Serial.print(","); Serial.print(package1.ID,2);
       Serial.print("\t");  
       Serial.print(","); Serial.print(package2.yawTemp,1);
       Serial.print(","); Serial.print(package2.pitchTemp,1);
       Serial.print(","); Serial.print(package2.rollTemp,1);
       //Serial.print(","); Serial.print(package2.az,2);
       //Serial.print(","); Serial.print(package2.ay,2);
       //Serial.print(","); Serial.print(package2.ax,2);
       //Serial.print(","); Serial.print(package2.timer,2);
       Serial.print(","); Serial.print(package2.rate,2);
       Serial.print(","); Serial.print(package2.ID,2); 
       Serial.print(","); Serial.print(package4.yawTemp,1);
       Serial.print(","); Serial.print(package4.pitchTemp,1);
       Serial.print(","); Serial.print(package4.rollTemp,1);
       //Serial.print(","); Serial.print(package4.az,2);
       //Serial.print(","); Serial.print(package4.ay,2);
       //Serial.print(","); Serial.print(package4.ax,2);
       //Serial.print(","); Serial.print(package4.timer,2);
       Serial.print(","); Serial.print(package4.rate,2);
       Serial.print(","); Serial.print(package4.ID,2);  
       Serial.print(" "); Serial.println(lup);   
       }
     }
     else if (radio.available(&pipe3))
     {
       if (pipe3 == 3)
       {
       lup =3;
       radio.read(&package4, sizeof(package4));
       Serial.print(timeVal, 2); 
       Serial.print(","); Serial.print(package1.yawTemp,1);
       Serial.print(","); Serial.print(package1.pitchTemp,1);
       Serial.print(","); Serial.print(package1.rollTemp,1);
       //Serial.print(","); Serial.print(package1.az,2);
       //Serial.print(","); Serial.print(package1.ay,2);
       //Serial.print(","); Serial.print(package1.ax,2);
       //Serial.print(","); Serial.print(package1.timer,2);
       Serial.print(","); Serial.print(package1.rate,2);
       Serial.print(","); Serial.print(package1.ID,2);
       Serial.print("/t"); Serial.print("/t");  
       Serial.print(","); Serial.print(package2.yawTemp,1);
       Serial.print(","); Serial.print(package2.pitchTemp,1);
       Serial.print(","); Serial.print(package2.rollTemp,1);
       //Serial.print(","); Serial.print(package2.az,2);
       //Serial.print(","); Serial.print(package2.ay,2);
       //Serial.print(","); Serial.print(package2.ax,2);
       //Serial.print(","); Serial.print(package2.timer,2);
       Serial.print(","); Serial.print(package2.rate,2); 
       Serial.print(","); Serial.print(package2.ID,2);    
       Serial.print("\t");   
       Serial.print(","); Serial.print(package4.yawTemp,1);
       Serial.print(","); Serial.print(package4.pitchTemp,1);
       Serial.print(","); Serial.print(package4.rollTemp,1);
       //Serial.print(","); Serial.print(package4.az,2);
       //Serial.print(","); Serial.print(package4.ay,2);
       //Serial.print(","); Serial.print(package4.ax,2);
       //Serial.print(","); Serial.print(package4.timer,2);
       Serial.print(","); Serial.print(package4.rate,2); 
       Serial.print(","); Serial.print(package4.ID,2); 
       Serial.print(" "); Serial.println(lup);      
       } 
     } 
}

I will try to modify the code to ask from the receiver to send data sequentially from the transmitters (master-slave with IDs) and see if that works.