RTT and PLR(Packet Loss Ratio)

Projects General Guidance
6

Maybe this gets you started with the measurement of lost packets:

// transmitter code fragment - lost packets :

const unsigned long intervalMs = 10 ;  
unsigned long lastTrasmitAtMs = 0 ;
unsigned long serialNumber = 1 ;


loop() {
  // sends 6000 packets @ 10 mS intervals. Duration = approx 1 minute
  if ( serialNumber < 6000 && millis() - lastTrasmitAtMs > interval ) {
     lastTrasmitAtMs += intervalMs ;
     radio.write( &serialNumber, sizeof( serialNumber ) ); 
     serialNumber++; 
  }
}




// receiver code - lost packets

unsigned long serialNumber ;
unsigned long serialNumberPrevious = 0  ;
unsigned long missingPackets ; 

loop() {
     radio.read( &serialNumber, sizeof( serialNumber ) ); 
     missingPackets = serialNumber - serialNumberPrevious - 1 ;
     // prints a message when a loss of a packet or group of packets is discovered.
     if ( missingPackets > 0 ) {
       Serial.print ( "lost packets= " ) ; 
       Serial.print ( missingPackets ) ;
     }
     serialNumberPrevious = serialNumber ;
  }
}