Optional Argument For relay control nodemcu-32s

Projects General Guidance
1

guys needs little help here for make optional argument in function in header file

this one is main.cpp file

#include <Arduino.h>
#include "relay.h"


void setup()
{
 relay.relaysetup(14, 27, 26);
}

void loop()
{
relay.relayloop();
}

and here another file creating function

class relay
{

private:

int Relay1;
int Relay2;
int Relay3;
int Relay4;
int Relay5;
int Relay6;
int Relay7;


public:

void relaysetup(int relay1, int relay2, int relay3, int relay4, int relay5, int relay6,
int relay7)

  {

    Relay1 = relay1;
    Relay2 = relay2;
    Relay3 = relay3;
    Relay4 = relay4;
    Relay5 = relay5;
    Relay6 = relay6;
    Relay7 = relay7;

    pinMode(Relay1, OUTPUT);
    pinMode(Relay2, OUTPUT);
    pinMode(Relay3, OUTPUT);

  }

void relayloop()
{
  digitalWrite(Relay1, LOW);
  delay(500);
  digitalWrite(Relay1, HIGH);
  delay(500);
  digitalWrite(Relay2, LOW);
  delay(500);
  digitalWrite(Relay2, HIGH);
  delay(500);
  digitalWrite(Relay3, LOW);
  delay(500);
  digitalWrite(Relay3, HIGH);
  delay(500);
}
};

relay relay;

here i declare 7 relay in function but i want to use less relay for now so how can i create optional argument in function so i can use this header file with my different project because i't too easy just include header file and than add required relays in argument in function up to seven relays

2

Try this. It may give you some ideas

#include <Arduino.h>

class relay
{
  private:
    int relays[7];

  public:

    void relaySetup(int relay0, int relay1 = -1, int relay2 = -1, int relay3 = -1, int relay4 = -1, int relay5 = -1, int relay6 = -1)
    {
      relays[0] = relay0;
      relays[1] = relay1;
      relays[2] = relay2;
      relays[3] = relay3;
      relays[4] = relay4;
      relays[5] = relay5;
      relays[6] = relay6;
      for (int r = 0; r < 7; r++)
      {
        if (relays[r] != -1)
        {
          pinMode(relays[r], OUTPUT);
        }
      }
    }

    void relayLoop()
    {
      Serial.println("relayLoop");
      for (int r = 0; r < 7; r++)
      {
        if (relays[r] != -1)
        {
          Serial.println(relays[r]);
        }
      }
      Serial.println();
    }
};

relay myRelays0;
relay myRelays1;

void setup()
{
  Serial.begin(115200);
  while (!Serial);
  myRelays0.relaySetup(14, 27, 26);
  myRelays1.relaySetup(10, 11, 12, 13, 14);
  myRelays0.relayLoop();
  myRelays1.relayLoop();
}

void loop()
{
}
1 Like
3

thank you so much buddy it's lot's help for me

4

This topic was automatically closed 120 days after the last reply. New replies are no longer allowed.