I am facing some problems with an arduino nrf24l01 code, kindly give suggestions please

[Vraj]

i am facing some problems with coding .kindly suggest me.

hello,
i am facing some coding problem with this arduino nrf24l01 code.
here is the receiver code

#include<SPI.h>
#include"RF24.h"
RF24 radio(7, 8);
byte addresses[][6] = {"0"};
struct package
{ float  vraj = 1;
};
typedef struct package;
package data;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  radio.begin();
  radio.setPALevel(RF24_PA_MAX);
  radio.setDataRate(RF24_1MBPS);
  radio.setChannel(115);
  radio.openReadingPipe(1, addresses[0]);
  radio.startListening();
  delay(100);
}

void loop() {
  Serial.println("i m top");
  delay(1000);
  radio.startListening();
  if (radio.available())
  { while (radio.available())
    {
      radio.write(&data, sizeof(data));
      Serial.println("i m here");   
     
    }
    radio.stopListening();
   analogWrite(3, data.vraj);
    Serial.println(data.vraj);

  }
  else
  { Serial.println("no");
  } delay(1000);
}

and here is transmitter code

#include<SPI.h>
#include"RF24.h"
RF24 radio(7,8);
byte addresses[][6]={"0"};
struct package
{ float vraj=1;
};
typedef struct package;
package data;
void setup() {
  // put your setup code here, to run once:
Serial.begin(115200);
radio.begin();
radio.setPALevel(RF24_PA_MIN);
radio.setDataRate(RF24_1MBPS);
radio.setChannel(115);
radio.openWritingPipe(addresses[0]);
delay(100);
radio.startListening();
}

void loop() {
  // put your main code here, to run repeatedly:
radio.write(&data,sizeof(data));
Serial.println(data.vraj);
data.vraj=map(analogRead(3),0,1023,0,255);
delay(1000);

}

i think there is problem with receiver side
because i can see the values of analog read on serial monitor.

 

[matti0010]

Re: i am facing some problems with coding .kindly suggest me.

Why you have radio.stopListening(); in receiver? So you one receive data and no more.

 

[Vraj]

Re: i am facing some problems with coding .kindly suggest me.

without it, it is also not receiving data.

 

[matti0010]

Re: i am facing some problems with coding .kindly suggest me.

Maybe try: **broken link removed**

Your adress pipes is other.

 

[Vraj]

Re: i am facing some problems with coding .kindly suggest me.

this code is working perfectly but my edited is not working

 

[matti0010]

Re: i am facing some problems with coding .kindly suggest me.

1) Do you have good connect? Check it.
2) In transmitter you have Delay(100), try Delay(1000). Maybe NRF need delay(1000) on start (it's stupid but... you can try).
3) Try set transmit and receive on 250KBPS, maybe Arduino have problem with 1MBPS.
4) In transmitter you have PA_MIN. In receiver you have PA_MAX. Select one in both code.
!!!!!! 5) !!!!!! In receive you have radio.write(&data, sizeof(data)); under while. Why write? You receive, no transmit. Replace on radio.Read(&data, sizeof(data));
6) In receive delete radio.stopListening();

 

[Vraj]

Re: i am facing some problems with coding .kindly suggest me.

hmm,
the problem was the radio.startListening(); at transmitter side and that 6 that you mentioned. thanks matti,i am proud of you.