I have a problem with my nano arduino and the nrf24l01 as receiver

Question

Hello I have a problem with my nano arduino and the nrf24l01 as receiver . I'm trying to upload my code to my board, but it say that my code have this mistake:

Receiver:45:10: error: void value not ignored as it ought to be

exit status 1 void value not ignored as it ought to be

the complet code is:

#include <nRF24L01.h>
#include <RF24.h>
#include <RF24_config.h>
//Receiver Code (Hand)
#include <Servo.h> //the library which helps us to control the servo motor
#include <SPI.h> //the communication interface with the modem
#include "RF24.h" //the library which helps us to control the radio modem
//define the servo name
Servo myServo1;
Servo myServo3;
Servo myServo4;
Servo myServo2;
Servo myServo5;
RF24 radio(9,10); /*This object represents a modem connected to the Arduino. 
 Arguments 9 and 10 are a digital pin numbers to which signals 
 CE and CSN are connected.*/
const uint64_t pipe = 0xE8E8F0F0E1LL; //the address of the modem,that will receive data from the Arduino.
int msg[5];
void setup(){
 //define the servo input pins
 myServo1.attach(15); //A1
 myServo2.attach(16); //A2
 myServo3.attach(17); //A3
 myServo4.attach(18); //A4
 myServo5.attach(19); //A5
 radio.begin(); //it activates the modem.
 radio.openReadingPipe(1, pipe); //determines the address of our modem which receive data.
 radio.startListening(); //enable receiving data via modem
 }
void loop(){
 if(radio.available()){
 bool done = false;
 while (!done){
 done = radio.read(msg, sizeof(msg));
 myServo1.write(msg[2]); //A1
 myServo2.write(msg[4]); //A2
 myServo3.write(msg[3]); //A3
 myServo4.write(msg[1]); //A4
 myServo5.write(msg[0]); //A5
 }
 }
}

and the problen is here:

done = radio.read(msg, sizeof(msg));

I don't know hoy to make that comes out as a code. I'm sorry. I'm trying to program a bionic hand but i have just started to work with arduino boards and their respective prongram. If someone can help me I would be very grateful. thanks

Answer 1

radio.read() does not return a value. You can't assign "no value" to a boolean.

If radio.available() is true then radio.read() will succeed. There is no need to test if it worked or not.