13. Networking and communications (Indonesia group)

This is group assignment page of Networking and communications (Indonesia Student) :

• Setyawan Wibowo
• Muhammad Prasetya Kurniawan
• Jans Hendry

Group assignment:

• send a message between two projects

In this group assignment we will try to communicate between systems:

• The first system; ATTiny 3216
• second system: Arduino UNO

the two systems will be connected wirelessly using the 2.4G Wireless nRF24L01p module with PA and LNA

Test for Communication

For Transmiter system

/*
* Arduino Wireless Communication Tutorial
*     Example 1 - Transmitter Code
* source code :               
* by Dejan Nedelkovski, www.HowToMechatronics.com
* 
* Library: TMRh20/RF24, https://github.com/tmrh20/RF24/
*/

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

RF24 radio(9, 7); // CE, CSN

const byte address[6] = "00001";

void setup() {
  radio.begin();
  radio.openWritingPipe(address);
  radio.setPALevel(RF24_PA_MIN);
  radio.stopListening();
}

void loop() {
  const char text[] = "Hello World";
  radio.write(&text, sizeof(text));
  delay(1000);
}

For Receiver :

/*
* Arduino Wireless Communication Tutorial
*       Example 1 - Receiver Code
* source code :               
* by Dejan Nedelkovski, www.HowToMechatronics.com
* 
* Library: TMRh20/RF24, https://github.com/tmrh20/RF24/
*/

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

RF24 radio(9, 7); // CE, CSN

const byte address[6] = "00001";

void setup() {
  Serial.begin(9600);
  radio.begin();
  radio.openReadingPipe(0, address);
  radio.setPALevel(RF24_PA_MIN);
  radio.startListening();
}

void loop() {
  if (radio.available()) {
    char text[32] = "";
    radio.read(&text, sizeof(text));
    Serial.println(text);
  }
}

Testing to controlled other system wireless

Source code for Transmitter

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
RF24 radio(9, 7); // 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.
int button_pin = 5;
boolean button_state = 0;
void setup() {
pinMode(button_pin, INPUT);
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()
{
button_state = digitalRead(button_pin);
if(button_state == HIGH)
{
const char text[] = "Your Button State is HIGH";
radio.write(&text, sizeof(text));                  //Sending the message to receiver
}
else
{
const char text[] = "Your Button State is LOW";
radio.write(&text, sizeof(text));                  //Sending the message to receiver 
}
radio.write(&button_state, sizeof(button_state));  //Sending the message to receiver 
delay(1000);
}

Source Code for Receiver

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
RF24 radio(9, 7); // CE, CSN
const byte address[6] = "00001";
boolean button_state = 0;
int led_pin = 3;
void setup() {
pinMode(led_pin, OUTPUT);
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()
{
if (radio.available())              //Looking for the data.
{
char text[32] = "";                 //Saving the incoming data
radio.read(&text, sizeof(text));    //Reading the data
radio.read(&button_state, sizeof(button_state));    //Reading the data
if(button_state == HIGH)
{
digitalWrite(led_pin, HIGH);
Serial.println(text);
}
else
{
digitalWrite(led_pin, LOW);
Serial.println(text);}
}
delay(5);
}

Result:

---

Last update: June 19, 2022