Arduino MFRC-522 Warning, Need help PLS

Projects Networking, Protocols, and Devices
1

Im using :

Arduino Uno R3 Compatible
RFID Rc522 Card reader detector

It happen when i try to upload or verify code into rfid_read_personal_data

In file included from C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522Extended.cpp:8:0:

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522Extended.h: In constructor 'MFRC522Extended::MFRC522Extended(uint8_t)':

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522Extended.h:81:44: warning: 'MFRC522::MFRC522(byte)' is deprecated: use MFRC522(byte chipSelectPin, byte resetPowerDownPin) [-Wdeprecated-declarations]

MFRC522Extended(uint8_t rst) : MFRC522(rst) {};

^

In file included from C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522Extended.h:10:0,

from C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522Extended.cpp:8:

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.h:335:2: note: declared here

MFRC522(byte resetPowerDownPin);

^

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp: In member function 'bool MFRC522::MIFARE_SetUid(byte*, byte, bool)':

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp:1818:7: warning: 'bool MFRC522::MIFARE_OpenUidBackdoor(bool)' is deprecated: will move to extra class in next version [-Wdeprecated-declarations]

if (!MIFARE_OpenUidBackdoor(logErrors)) {

^

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp:1674:6: note: declared here

bool MFRC522::MIFARE_OpenUidBackdoor(bool logErrors) {

^

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp:1818:39: warning: 'bool MFRC522::MIFARE_OpenUidBackdoor(bool)' is deprecated: will move to extra class in next version [-Wdeprecated-declarations]

if (!MIFARE_OpenUidBackdoor(logErrors)) {

^

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp:1674:6: note: declared here

bool MFRC522::MIFARE_OpenUidBackdoor(bool logErrors) {

^

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp: In member function 'bool MFRC522::MIFARE_UnbrickUidSector(bool)':

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp:1847:2: warning: 'bool MFRC522::MIFARE_OpenUidBackdoor(bool)' is deprecated: will move to extra class in next version [-Wdeprecated-declarations]

MIFARE_OpenUidBackdoor(logErrors);

^

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp:1674:6: note: declared here

bool MFRC522::MIFARE_OpenUidBackdoor(bool logErrors) {

^

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp:1847:34: warning: 'bool MFRC522::MIFARE_OpenUidBackdoor(bool)' is deprecated: will move to extra class in next version [-Wdeprecated-declarations]

MIFARE_OpenUidBackdoor(logErrors);

^

C:\Users\Shahidan\Documents\Arduino\libraries\MFRC522\src\MFRC522.cpp:1674:6: note: declared here

bool MFRC522::MIFARE_OpenUidBackdoor(bool logErrors) {

^

Sketch uses 6542 bytes (20%) of program storage space. Maximum is 32256 bytes.
Global variables use 281 bytes (13%) of dynamic memory, leaving 1767 bytes for local variables. Maximum is 2048 bytes.

2

I think the warnings say it all. Your code is using deprecated functions, which may cause it to no longer compile with the next release of the MFRC522 library. As long as you continue to use the version of the library you're using now, there is no problem. When the time comes to update to the next version of the library, you simply need to update your code to be compatible with it.

3

so , the current version still can be use? i mean can insert data into the card , Ty for replying

4

The warnings don't indicate any problem with your code when using the current version of the library. The library author is just being nice enough to give advance notice of future changes they are planning that will break compatibility.