Wi-Fi P2P Project Overview

[中文]

This project is the BK7258 SMP example for Wi-Fi Direct (P2P). It enables CONFIG_P2P on AP and CP so the AP-core CLI can start P2P, discover peers, negotiate GO/GC, and form a group. P2P concurrent operation with WLAN STA is not supported on this SMP branch.

Developer guide: ap/docs/bk7258/zh_CN/developer-guide/wifi/bk_wifi_p2p.rst.

1. Directory Layout

p2p/
├── CMakeLists.txt                 # Top-level CMake entry
├── Makefile                       # Make build entry
├── ap/                            # AP-core application
│   ├── ap_main.c                  # AP entry; P2P is driven by CLI after init
│   └── config/                    # BK7258 AP-side configuration (CONFIG_P2P=y)
├── cp/                            # CP-core application
│   ├── cp_main.c                  # CP entry; boots AP core
│   └── config/                    # BK7258 CP-side configuration (CONFIG_P2P, CONFIG_WPS)
└── partitions/                    # Flash and RAM layout

2. Features

P2P Device, Group Owner (GO), and Group Client (GC).
GO Negotiation with Intent 0 (force GC), 15 (force GO), or 1–14 (preference; default 7).
WPS Push Button provisioning and WPA2 data encryption.
Device discovery on social channels; listen / find / connect / cancel / disable.
Default device name is BEKEN SMP_P2P when SSID is omitted.

3. Hardware & Configuration

Hardware: two BK7258 SMP boards (or one board plus a P2P-capable phone); UART0 for AP-core CLI.
AP: CONFIG_P2P=y in ap/config/bk7258_ap/config.
CP: CONFIG_P2P=y and CONFIG_WPS=y in cp/config/bk7258/config (CONFIG_WPS is required by P2P).
Flash and RAM: use the default partitions in this project.
When porting, register a P2P event callback (demo_p2p_event_cb) as described in the developer guide.

4. Build & Flash

make bk7258 PROJECT=wifi/p2p

Flash the generated AP and CP images with the SDK flash tool, then reset the board.

5. Runtime Flow

Operate on the AP-core UART. CLI names are p2p ... (not ap_cmd p2p).

Enable P2P:

p2p enable
p2p enable p2p_ssid
p2p enable p2p_ssid 0          # force GC
p2p enable p2p_ssid 15         # force GO

Discover peers, or enter listen:
```
p2p find
p2p listen
```
Connect to a found device (MAC is 12 hex digits, : optional):
```
p2p connect <mac> <method> <intent>
```
Stop discovery, cancel the current operation (including disconnect), or disable P2P:
```
p2p stop_find
p2p cancel
p2p disable
p2p help
```

Typical two-board case: both enable P2P; one uses Intent 15 (GO) and p2p listen, the other uses Intent 0 (GC) and p2p find, then connect and confirm GO/GC IP in logs.

6. Troubleshooting

p2p command missing: Confirm this project is flashed and CONFIG_P2P=y on AP.
Enable fails or listen dies after GO connect/disconnect: Check CP CONFIG_WPS=y; do not run STA and P2P together (no concurrent mode).
No DEVICE_FOUND in logs: Both sides should p2p enable then find/listen; keep devices close and on social channels 1/6/11.
ioctl busy / ROC errors after reconnect: See UART wpa / wifid logs; cancel and disable before the next enable if a previous session did not tear down cleanly.