147 lines
4.1 KiB
Markdown
147 lines
4.1 KiB
Markdown
# ZeroClaw on Nucleo-F401RE — Step-by-Step Guide
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Run ZeroClaw on your Mac or Linux host. Connect a Nucleo-F401RE via USB. Control GPIO (LED, pins) via Telegram or CLI.
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---
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## Get Board Info via Telegram (No Firmware Needed)
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ZeroClaw can read chip info from the Nucleo over USB **without flashing any firmware**. Message your Telegram bot:
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- *"What board info do I have?"*
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- *"Board info"*
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- *"What hardware is connected?"*
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- *"Chip info"*
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The agent uses the `hardware_board_info` tool to return chip name, architecture, and memory map. With the `probe` feature, it reads live data via USB/SWD; otherwise it returns static datasheet info.
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**Config:** Add Nucleo to `config.toml` first (so the agent knows which board to query):
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```toml
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[[peripherals.boards]]
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board = "nucleo-f401re"
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transport = "serial"
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path = "/dev/ttyACM0"
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baud = 115200
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```
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**CLI alternative:**
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```bash
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cargo build --features hardware,probe
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zeroclaw hardware info
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zeroclaw hardware discover
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```
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---
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## What's Included (No Code Changes Needed)
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ZeroClaw includes everything for Nucleo-F401RE:
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| Component | Location | Purpose |
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|-----------|----------|---------|
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| Firmware | `firmware/zeroclaw-nucleo/` | Embassy Rust — USART2 (115200), gpio_read, gpio_write |
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| Serial peripheral | `src/peripherals/serial.rs` | JSON-over-serial protocol (same as Arduino/ESP32) |
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| Flash command | `zeroclaw peripheral flash-nucleo` | Builds firmware, flashes via probe-rs |
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Protocol: newline-delimited JSON. Request: `{"id":"1","cmd":"gpio_write","args":{"pin":13,"value":1}}`. Response: `{"id":"1","ok":true,"result":"done"}`.
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---
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## Prerequisites
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- Nucleo-F401RE board
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- USB cable (USB-A to Mini-USB; Nucleo has built-in ST-Link)
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- For flashing: `cargo install probe-rs-tools --locked` (or use the [install script](https://probe.rs/docs/getting-started/installation/))
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---
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## Phase 1: Flash Firmware
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### 1.1 Connect Nucleo
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1. Connect Nucleo to your Mac/Linux via USB.
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2. The board appears as a USB device (ST-Link). No separate driver needed on modern systems.
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### 1.2 Flash via ZeroClaw
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From the zeroclaw repo root:
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```bash
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zeroclaw peripheral flash-nucleo
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```
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This builds `firmware/zeroclaw-nucleo` and runs `probe-rs run --chip STM32F401RETx`. The firmware runs immediately after flashing.
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### 1.3 Manual Flash (Alternative)
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```bash
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cd firmware/zeroclaw-nucleo
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cargo build --release --target thumbv7em-none-eabihf
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probe-rs run --chip STM32F401RETx target/thumbv7em-none-eabihf/release/zeroclaw-nucleo
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```
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---
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## Phase 2: Find Serial Port
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- **macOS:** `/dev/cu.usbmodem*` or `/dev/tty.usbmodem*` (e.g. `/dev/cu.usbmodem101`)
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- **Linux:** `/dev/ttyACM0` (or check `dmesg` after plugging in)
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USART2 (PA2/PA3) is bridged to the ST-Link's virtual COM port, so the host sees one serial device.
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---
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## Phase 3: Configure ZeroClaw
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Add to `~/.zeroclaw/config.toml`:
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```toml
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[peripherals]
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enabled = true
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[[peripherals.boards]]
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board = "nucleo-f401re"
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transport = "serial"
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path = "/dev/cu.usbmodem101" # adjust to your port
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baud = 115200
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```
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---
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## Phase 4: Run and Test
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```bash
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zeroclaw daemon --host 127.0.0.1 --port 3000
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```
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Or use the agent directly:
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```bash
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zeroclaw agent --message "Turn on the LED on pin 13"
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```
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Pin 13 = PA5 = User LED (LD2) on Nucleo-F401RE.
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---
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## Summary: Commands
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| Step | Command |
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|------|---------|
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| 1 | Connect Nucleo via USB |
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| 2 | `cargo install probe-rs-tools --locked` |
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| 3 | `zeroclaw peripheral flash-nucleo` |
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| 4 | Add Nucleo to config.toml (path = your serial port) |
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| 5 | `zeroclaw daemon` or `zeroclaw agent -m "Turn on LED"` |
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---
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## Troubleshooting
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- **flash-nucleo unrecognized** — Build from repo: `cargo run --features hardware -- peripheral flash-nucleo`. The subcommand is only in the repo build, not in crates.io installs.
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- **probe-rs not found** — `cargo install probe-rs-tools --locked` (the `probe-rs` crate is a library; the CLI is in `probe-rs-tools`)
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- **No probe detected** — Ensure Nucleo is connected. Try another USB cable/port.
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- **Serial port not found** — On Linux, add user to `dialout`: `sudo usermod -a -G dialout $USER`, then log out/in.
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- **GPIO commands ignored** — Check `path` in config matches your serial port. Run `zeroclaw peripheral list` to verify.
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