Hi all,
I have been having issues getting variables to ALL come across when using two Arduino Nanos and NRF modules.
Sending them seprately was not working as by the 4th one they were not received.
Someone mentioned using sprintf a while back and I can confirm I am now getting the data all at once.
Only problem is, the data displays correctly when using Serial.print(data); but I can't seem to pull out the individual values.
I tried accessing it by assigning one variable in the array to another and printing, but this results in an incorrect result.
IE When sending 5 values I get
8000 2222 3333 4444 5555 in Serial monitor Serial.println(data) - from the Sending device
8000 2222 3333 4444 5555 in Serial monitor Serial.println(data) - on the Receiving device
So thats great! (I couldn't get more than 3 results trying it other ways)
But trying to pull out one of those numbers results in a random value instead of the value in serial monitor (Usually a 1 or a 3).
I was trying
int pleasework = sprintf(data,"%u", xPos);
Serial.println(pleasework);
Full code below, hope that all made sense,
I'm assuming it's just the way I am trying to access the received data and will be a simply, no, you need to format it like this solution.
Transmitter
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
RF24 radio(7, 8); // CE, CSN
const byte address[6] = "00001"; //Byte of array representing the address. This is the address where we will send the data. This should be same on the receiving side.
// Variables
char data[100];
int line1 = 8000;
int line2 = 2222;
int line3 = 3333;
int line4 = 4444;
int line5 = 5555;
void setup()
{
Serial.begin(9600);
radio.begin(); //Starting the Wireless communication
radio.openWritingPipe(address); //Setting the address where we will send the data
radio.setPALevel(RF24_PA_MIN); //You can set it as minimum or maximum depending on the distance between the transmitter and receiver.
radio.stopListening(); //This sets the module as transmitter
}
void loop()
{
sprintf(data,"%u %u %u %u %u",line1,line2,line3,line4,line5);
radio.write(&data, sizeof(data)); //Sending the message to receiver
Serial.println(data);
delay(1000);
}
Receiver
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
RF24 radio(7, 8); // CE, CSN
const byte address[6] = "00001";
char data[100];
int line1;
int line2;
int line3;
int line4;
int line5;
void setup()
{
Serial.begin(9600);
radio.begin();
radio.openReadingPipe(0, address); //Setting the address at which we will receive the data
radio.setPALevel(RF24_PA_MIN); //You can set this as minimum or maximum depending on the distance between the transmitter and receiver.
radio.startListening(); //This sets the module as receiver
}
void loop()
{
delay(20);
if (radio.available()) //Looking for the data.
{
// read variables from sender
radio.read(&data, sizeof(data));
// print to monitor
Serial.println(data);
int XYZ = sprintf(data, "%u",line1);
Serial.println(XYZ);
delay(1000);
}
}
Thank you
D
