Hola, estaba programando en mi IDE de arduino y me saltaron todos estos errores
C:\Users\braya\AppData\Local\Temp\ccnI4uej.ltrans0.ltrans.o: In function PCD_WriteRegister': c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:66: undefined reference to digitalWrite'
c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:71: undefined reference to digitalWrite' C:\Users\braya\AppData\Local\Temp\ccnI4uej.ltrans0.ltrans.o: In function PCD_ReadRegister':
c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:83: undefined reference to digitalWrite' c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:86: undefined reference to digitalWrite'
C:\Users\braya\AppData\Local\Temp\ccnI4uej.ltrans0.ltrans.o: In function PCD_WriteRegister': c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:50: undefined reference to digitalWrite'
C:\Users\braya\AppData\Local\Temp\ccnI4uej.ltrans0.ltrans.o:c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:53: more undefined references to digitalWrite' follow C:\Users\braya\AppData\Local\Temp\ccnI4uej.ltrans0.ltrans.o: In function PCD_CalculateCRC':
c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:170: undefined reference to millis' c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:182: undefined reference to yield'
c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:184: undefined reference to millis' C:\Users\braya\AppData\Local\Temp\ccnI4uej.ltrans0.ltrans.o: In function PCD_CommunicateWithPICC':
c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:499: undefined reference to millis' c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:511: undefined reference to yield'
c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:513: undefined reference to millis' C:\Users\braya\AppData\Local\Temp\ccnI4uej.ltrans0.ltrans.o: In function PCD_ReadRegister':
c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:107: undefined reference to digitalWrite' c:\Users\braya\Documents\Arduino\libraries\MFRC522\src/MFRC522.cpp:124: undefined reference to digitalWrite'
c:/users/braya/appdata/local/arduino15/packages/arduino/tools/avr-gcc/7.3.0-atmel3.6.1-arduino7/bin/../lib/gcc/avr/7.3.0/../../../../avr/lib/avr5/crtatmega328p.o:(.init9+0x0): undefined reference to `main'
collect2.exe: error: ld returned 1 exit status
Ya reinstale las librerias y hasta mi IDE y aun asi ya no me deja hacer nada
