Which would you prefer?
#define SS_PIN 10 #define RST_PIN 9
) by allowing you to load compiled .HEX files into simulated microcontrollers. Animated Models rc522 proteus library
Functional testing without hardware model Which would you prefer
Open Proteus → Pick Devices (P) → Search for "RC522" . If installed correctly, the RFID module will appear in the results. rc522 proteus library
Use the Terminal Mode in Proteus to add a POWER terminal of 3.3V. Do not tie VCC to 5V. Even in simulation, some models enforce voltage limits and will “fail” (output undefined logic levels) if overvolted.