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Implement power button monitor, document device input devices

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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Michael Smith
2026-02-13 20:07:37 +01:00
parent 0f653d4395
commit 3728e9499c
3 changed files with 48 additions and 39 deletions
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docs/rg35xx-plus.md
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@@ -33,6 +33,19 @@ All required shared libraries are pre-installed. Most are at `/usr/lib/`, some a
Shared libraries are already present — no need to bundle or build them. A native aarch64 compile (e.g. inside the arm64 Docker container) produces working binaries. Must link against glibc ≤ 2.35.
## Input Devices
Three input devices are registered via `/proc/bus/input/devices`:
| Device | Handlers | Purpose |
|--------|----------|---------|
| `axp2202-pek` | `event0` | Power button (`KEY_POWER`, code 116) |
| `ANBERNIC-keys` | `event1`, `js0` | Gamepad (d-pad, face buttons) |
| `dierct-keys-polled` | `event2` | Shoulder buttons, menu/function keys |
- **logind**: `HandlePowerKey=ignore` in `/etc/systemd/logind.conf` — systemd does not act on the power button, leaving it free for userspace handling.
- **evtest**: Available at `/usr/bin/evtest` for debugging input events.
## Partition Layout
| Device | Mount point | Filesystem | Contents |