/* Made by Jefferson Sandoval for the Embedded Networking and Communications assignment 
 * during the FabAcademy2021
 *  
 * This code was made for testing my board for a remote control for my final project which is an
 * Omni-directional three-wheeler.
 * 
 * Uploaded to an Arduino UNO board which, using a nRF24 module, serves as receiver reading data 
 * from another board with 2 joysticks as input. After reading the received values, it prints on 
 * Serial monitor a message that indicates the corresponding vehicle movements.
 * 
 * Documentation:
 * http://fabacademy.org/2021/labs/kamplintfort/students/jefferson-sandoval/assignments/week14/
 */
 
//Libraries for Communication part (nRF24)
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

RF24 radio(7, 8); //Create radio object with and CE & CSN pins
const byte address[6] = "00111"; //Receiver Communication address

void setup() {
  Serial.begin(9600); //Begin Serial communication at 9600 bauds
  radio.begin(); //Initialize radio object
  radio.setPALevel(RF24_PA_LOW); //Set radio range
  radio.openReadingPipe(0, address); //Set address to transmitter
  radio.startListening(); //Set module as receiver
}

void loop() {
  int Values[3]; //Declare variable for data to receive
  if (radio.available()) {  
    radio.read(&Values, sizeof(Values)); //Read array of Values from Transmitter

    //Print on Serial monitor a message according to the direction of movement of the joysticks
    if (Values[0]>=15){Serial.println("Forward");}
    if (Values[0]<=-15){Serial.println("Backward");}
    if (Values[1]>=15){Serial.println("Right");}
    if (Values[1]<=-15){Serial.println("Left");}
    if (Values[2]>=15){Serial.println("C-CW rotation");}
    if (Values[2]<=-15){Serial.println("CW rotation");}
    }
    delay(300); //Read values every 0.3 seconds
}