From 4b1c8d16f72bb5d8f2eb8a2e8dde35abdd2f2a88 Mon Sep 17 00:00:00 2001 From: hathach Date: Mon, 29 Jun 2026 10:16:25 +0700 Subject: docs: add build-doc tooling and a README for every example Documentation tooling: - Add the `build-doc` skill and `tools/build_doc.py` wrapper for local Sphinx builds (clean / -W / open). - Enable Markdown (MyST) in conf.py and auto-collect examples/{device,host,dual}/*/README.md into a 3-level Examples nav (Examples > Device/Host/Dual > example), noting each page's source location and normalizing headings to a single H1. - Remove the stale `.claude/commands/build-doc.md`; point the AGENTS.md Documentation section at the skill. Example docs: - Add a README.md for every device/host/dual example: what it does, USB interface table, notable tusb_config.h settings, generic CMake + Make build steps, and how to try it. - Fold each *_freertos variant into its base README, noting the FreeRTOS source path and any RTOS-specific behavior. Generated docs/examples/ output is git-ignored. Builds clean with `sphinx-build -W`. Co-Authored-By: Claude Opus 4.8 (1M context) --- examples/host/device_info/README.md | 45 +++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 examples/host/device_info/README.md (limited to 'examples/host/device_info') diff --git a/examples/host/device_info/README.md b/examples/host/device_info/README.md new file mode 100644 index 000000000..79c359548 --- /dev/null +++ b/examples/host/device_info/README.md @@ -0,0 +1,45 @@ +# Host: Device Info + +A USB host example that enumerates any attached device and prints its descriptor information over the debug UART. No class drivers are enabled — only the hub driver, so it works with any kind of device. + +## What it does + +- On mount of any device, fetches and prints the full device descriptor: VID/PID, USB version, device class/subclass/protocol, max packet size, bcdDevice, and number of configurations. +- Reads and prints the manufacturer, product, and serial-number string descriptors (UTF-16 to UTF-8), falling back to a placeholder serial when none is present. +- Blinks the board LED, with a faster pattern while no device is mounted. +- Builds on either the bare main loop or a FreeRTOS task, depending on `CFG_TUSB_OS`. + +## Requirements + +The board must support USB host mode (provide VBUS to the connected device); some boards need an external USB-A port / host adapter. + +## Configuration + +Notable `tusb_config.h` settings: + +```c +#define CFG_TUH_ENABLED 1 +#define CFG_TUH_HUB 1 +#define CFG_TUH_DEVICE_MAX (3*CFG_TUH_HUB + 1) +#define CFG_TUH_ENUMERATION_BUFSIZE 256 +``` + +## Building + +CMake: + +```bash +mkdir build && cd build +cmake -DBOARD=raspberry_pi_pico .. +cmake --build . +``` + +Make: + +```bash +make BOARD=raspberry_pi_pico all +``` + +## How to use + +Plug any USB device into the board's USB host port. The debug UART prints the device's `ID vvvv:pppp`, serial number, and the decoded device descriptor (a hub lets you attach several devices, each printed in turn). Unplugging the device prints a removal message. -- cgit v1.3.1