pcileech_bar_impl_fake_wifi

A simple fake Wi-Fi adapter module for PCIe BAR emulation.
This project is intended for testing, fuzzing, and development environments where simulating Wi-Fi behavior is required without real network hardware. Inspired by pcileech-Fakeconnect.

Features

• Simulates 4 different fake Wi-Fi SSIDs: Home, Cafe, Boss, Free
• Supports multi-station selection and connection switching
• Simulates connection stages: Idle → Scanning → Authenticating → Associating → Connected
• RSSI (signal strength) varies slightly to emulate real network behavior
• Simple, minimal, and easy-to-integrate design
• Compatible with pcileech style BAR device communication

Registers

Address	Description
0x0000	Link Status (1 = connected, 0 = not connected)
0x0004	Select Wi-Fi network (write)
0x0008	Connected SSID (read)
0x000C	Current RSSI (read)
0x0010	Number of available networks (read)
0x0014	SSID of the network (based on index)

How It Works

• Upon reset, the module enters an idle state.
• After a short time, it starts scanning available networks.
• Upon selecting a network (via REG_SCAN_RESULT), it simulates authenticating and associating.
• After connection, the module responds with the SSID and RSSI.
• RSSI fluctuates naturally to mimic real-world signal strength changes.

Usage Example

Instantiate the module with BAR routing:

pcileech_bar_impl_fake_wifi i_barX(
    .rst            (rst),
    .clk            (clk),
    .wr_addr        (wr_addr),
    .wr_be          (wr_be),
    .wr_data        (wr_data),
    .wr_valid       (wr_valid && wr_bar[X]),
    .rd_req_ctx     (rd_req_ctx),
    .rd_req_addr    (rd_req_addr),
    .rd_req_valid   (rd_req_valid && rd_req_bar[X]),
    .rd_rsp_ctx     (bar_rsp_ctx[X]),
    .rd_rsp_data    (bar_rsp_data[X]),
    .rd_rsp_valid   (bar_rsp_valid[X])
);