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erickdavestech
7b9547efcc
On-screen DualSense controller overlay for a PS5 running homebrew. Derivative of Common FPS for PS5 v1.2.1 by porhe911 with the SimpleFPS patch by khalifa007, both GPL-3.0-or-later. Controller artwork by Zacksly, CC BY 3.0, modified. See CREDITS.md and CHANGELOG.md. Signed-off-by: erickdavestech <54048831+erickdavestech@users.noreply.github.com>
Research probes
Small programs written while finding out how a payload can read the DualSense on the PS5. They are not part of the overlay and are kept for educational purposes.
| Program | Approach | Result |
|---|---|---|
pad_probe (main.c) |
Open and read the controller from a standalone payload with scePadOpen / scePadReadState. |
Fails: scePadOpen returns 0x809b0081. The controller belongs to the foreground process. |
pad_rpc (pad_rpc.c) |
Attach with ptrace to a process that owns the controller and call the pad functions in its context. | Explored as an alternative; superseded by reading inside SceShellUI, which needs no ptrace on another process. |
Conclusion: the overlay reads the controller from inside SceShellUI, where the renderer already runs
and the controller is always readable.
pt/ contains the ptrace helpers from elfldr by John
Törnblom (GPLv3+), included unmodified.
Building
Requires the PS5 payload SDK:
export PS5_PAYLOAD_SDK=/opt/ps5-payload-sdk
make
make test-rpc PS5_HOST=<PS5-IP>
The probes write their results to the kernel log and to /data/pad_probe.log or /data/pad_rpc.log.