/* 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 my board which, using a nRF24 module and two joysticks, serves as transmitter 
 * sending data to an Arduino UNO board.
 * 
 * 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(4, 5); //Create radio object with and CE & CSN pins
const byte address[6] = "00111"; //Transmitter communication address

void setup() {
  radio.begin(); //Initialize radio object
  radio.setPALevel(RF24_PA_LOW); //Set radio range
  radio.openWritingPipe(address); //Set address to receiver
  radio.stopListening(); //Set module as transmitter
}

void loop() {
  int Values[3]; ////Declare variable for data to send

  //Read values from Joysticks and convert them to percentage.
  //I used 200 cause the joystick can rotate only 50% on any direction.
  Values[0] = map(analogRead(0),0,1023,-200,200); //Left and Right movement from Joystick_1
  Values[1] = map(analogRead(1),0,1023,-200,200); //Forward and Backward movement from Joystick_1
  Values[2] = map(analogRead(7),0,1023,-200,200); //Rotation movement from Joystick_2

  radio.write(&Values, sizeof(Values)); //Send array of Values to Receiver
  
  delay(300); //Send values every 0.3 seconds
}