HF_LEGICSIM — Legic Prime Multi-Slot Simulator

Author: uhei Frequency: HF (13.56 MHz) Hardware: RDV4 (requires flash memory)

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What

Simulates Legic Prime MIM1024 dumps stored on flash memory. Supports up to 15 dump slots that can be cycled through. Changes made by readers during simulation are written back to the dump.

Why

When you need to emulate multiple Legic Prime cards on-site — for example, testing which credentials grant access to different areas. The 15-slot capacity and flash persistence means dumps survive power cycles.

How

1. On startup, loads the first dump from flash (hf_legicsim_dump_01.bin)
2. Simulates the loaded dump as a Legic Prime MIM1024 tag
3. Short press cycles to the next slot
4. After simulation, any changes written by readers are saved back to the dump file

LED Indicators

Button Controls

State Machine

stateDiagram-v2
    [*] --> LoadSlot1 : Startup

    LoadSlot1 --> Simulate : Dump loaded
    Simulate --> WriteBack : Simulation stopped
    WriteBack --> LoadSlot2 : Short press\nSave changes, next slot

    LoadSlot2 --> Simulate : Dump loaded
    
    Simulate --> [*] : Hold 500ms

    note right of Simulate
        Slots 01-15
        Files: hf_legicsim_dump_XX.bin
        Each 1024 bytes (MIM1024)
    end note

Flash Files

Upload dumps before use:

mem spiffs load -s hf_legicsim_dump_01.bin -d hf_legicsim_dump_01.bin
mem spiffs load -s hf_legicsim_dump_02.bin -d hf_legicsim_dump_02.bin
...

Each file is 1024 bytes (Legic Prime MIM1024 dump).

Compilation

make clean
make STANDALONE=HF_LEGICSIM -j
./pm3-flash-fullimage

Related

• Legic Prime Reader — Read and simulate Legic tags (single shot)