multi relay help

Projects Programming
1

Im new to this and need a little help

im setting up a rfid lock for my car with two relays
relay1 lock
relay2 unlock
i need it to switch back and forth
for example i put card to reader it pulses relay1 to lock the doors i put card to reader again this time to pulse relay2 to unlock the doors

please help!!!
this is my current code to auto relock the doors after a delay but i dont want auto relock

digitalWrite(relay2, LOW); // Unlock door!
delay(500); // pulse relay for Milli seconds
digitalWrite(relay2, HIGH);
delay(5000); //delay before relock
digitalWrite(relay1, LOW); // Relock door

2

Which RFID reader have you got ?

3

RC522

all the rfid coding is done i just need help with the relay coding

4

i just need help with the relay coding

Where are you stuck ? You obviously how to turn a relay on and off so what is the problem ?

5

my problem is the relays i want them to switch each time the card is read (put card to reader relay1 pulses put card to reader again relay2 pulses)

6

Ok. How about coding it like this pseudo code ?

cardReadOnce = false

start of loop()
  if a card is detected
    if cardReadOnce is false
      set cardReadOnce to true
      pulse relay 1
    end if
    else
      pulse relay 2
      set cardReadOnce to false
    end else
  end if
end of loop()

There are neater ways to do it but this is easy to understand