nrf24TransmitterRev2

//Rev 0 Created 7/7/2022 This is a limited version of Reference 1 focusing only on 4 pushbuttons - Transmitter Code
//Rev 1 Created 7/9/2022 This is my successful attempt to introduce a pause after each reading of the pushbuttons without using the delay function. This has the effect of working as a speed control too by adjusting the interval value. interval=10 seems to be a good speed.
//Rev 2 Created 7/14/2022 This is my successfull attempt to create a 13 pushbutton transmitter
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

const int PB1p=2, PB2p=3, PB3p=4, PB4p=5, PB5p=6, PB6p=7, PB7p=10; //Pin numbers for Pushbutton Pins

const uint64_t pipeOut = 0xF9E8F0F0E1LL;   //IMPORTANT: The same as in the receiver 0xF9E8F0F0E1LL

RF24 radio(8, 9); // select CE,CSN pin

struct PacketData
{
  byte switch1Value;
  byte switch2Value;
  byte switch3Value;
  byte switch4Value;
  byte switch5Value;
  byte switch6Value;
  byte switch7Value;
  byte switch8Value;
  byte switch9Value;
  byte switch10Value;
  byte switch11Value;
  byte switch12Value;
  byte switch13Value;
};
PacketData data;

unsigned long previousMillis = 0;
unsigned long interval = 10;

void setup()
{
  radio.begin();
  radio.setDataRate(RF24_250KBPS);
  radio.openWritingPipe(pipeOut);
  radio.stopListening(); //start the radio Transmitter

  pinMode(PB1p,INPUT_PULLUP); //PB1
  pinMode(PB2p,INPUT_PULLUP); //PB2
  pinMode(PB3p,INPUT_PULLUP); //PB3
  pinMode(PB4p,INPUT_PULLUP); //PB4
  pinMode(PB5p,INPUT_PULLUP); //PB5
  pinMode(PB6p,INPUT_PULLUP); //PB6
  pinMode(PB7p,INPUT_PULLUP); //PB7
  pinMode(A0,INPUT_PULLUP); //PB8
  pinMode(A1,INPUT_PULLUP); //PB9
  pinMode(A2,INPUT_PULLUP); //PB10
  pinMode(A3,INPUT_PULLUP); //PB11
  pinMode(A4,INPUT_PULLUP); //PB12
  pinMode(A5,INPUT_PULLUP); //PB13
}

void loop()
{
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis > interval)
  {
  previousMillis = currentMillis;
  data.switch1Value   = !digitalRead(PB1p);
  data.switch2Value   = !digitalRead(PB2p);
  data.switch3Value   = !digitalRead(PB3p);
  data.switch4Value   = !digitalRead(PB4p);
  data.switch5Value   = !digitalRead(PB5p);
  data.switch6Value   = !digitalRead(PB6p);
  data.switch7Value   = !digitalRead(PB7p);
  data.switch8Value   = !digitalRead(A0);
  data.switch9Value   = !digitalRead(A1);
  data.switch10Value   = !digitalRead(A2);
  data.switch11Value   = !digitalRead(A3);
  data.switch12Value   = !digitalRead(A4);
  data.switch13Value   = !digitalRead(A5);

  radio.write(&data, sizeof(PacketData));
  } //End of millis interval if statement

} //End of void loop()

//References
//Reference 1- Adaptation of https://www.youtube.com/watch?v=gsHeNrDoK84&t=14s which is the "Hash Include Electronics" YouTube channel video "Arduino 10 Channels Wireless Transmitter Receiver | nrf24l01+| DIY" File Located at https://github.com/un0038998/10_Channel_NRF_Transmitter_Receiver
//Reference 2- https://www.baldengineer.com/blink-without-delay-explained.html