Control de acceso RFID loop principal

Start Main Loop

any key was pressed?

Some TAG was presented?

TAG presented

is TAG MASTER ?

PROGRAMMING MODE

key pressed is "#" ?

Read TAG number n of the eeprom

TAG presented== TAG read from the eeprom

number of TAGs read ​​​​​​++

LCD:

enter password

any key was pressed?

key pressed is "#" ?

concatenate keys pressed to form key

LCD:

enter password

keys pressed

key pressed is "*" ?

number of TAGs read

>

number of stored TAGs?

Access Denied

LCD:

Access Denied

access granted

open chosen exit

LCD:

access granted

Read byte [4] of the TAG number read from the eeprom to obtain the relays allowed by this TAG

LCD:

enter door to open

1 2 3 4

any key was pressed?

key pressed

equals

allowed output?

number of password TAGs read ​​​​​​++

password read

>

number of stored password

TAGs?

Read password of each TAG number n of the eeprom

password read

=

password TAG read from the eeprom

Access Denied

LCD:

Access Denied

password read

=

master password

Read byte [4] of the TAG number associated with the key entered from the eeprom to get the relays allowed by this TAG