powerpods/goTool/README.md
simon d24b0cb5c3 Add goTool autotest with bench configs and UART scenarios.
JSON configs describe network and node MACs; scenarios run command
sequences with expect checks. Share UART client API across CLI and tests.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-05-18 23:36:28 +02:00

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# goTool
Host-side UART client for the Powerpod **master** ESP.
Full system documentation (roles, ESP-NOW, framing, protobuf): [`../main/README.md`](../main/README.md).
## Usage
```bash
cd goTool
go mod tidy
go run . -port /dev/ttyUSB0 version
go run . -port /dev/ttyUSB0 clients
```
| Flag | Default | Description |
|------|---------|-------------|
| `-port` | (required) | Serial port on master UART (GPIO2/3 adapter) |
| `-baud` | `921600` | Must match firmware `UART_BAUD_RATE` |
### Commands
| Command | UART payload | Description |
|---------|--------------|-------------|
| `version` | `0x03` | Prints `version` and `git_hash` from firmware |
| `clients` | `0x04` | Lists slaves registered on the master via ESP-NOW |
| `unicast-test` | `0x07` | Sends ESP-NOW unicast test to one slave (`-client`, `-seq`) |
| `test` | — | Run an automated scenario (JSON configs under `testdata/`) |
`clients` requires slaves to have responded to master discover broadcasts first.
### Automated tests
Bench **configs** (`testdata/configs/`) list master/slave MACs. **Scenarios** (`testdata/scenarios/`) run a sequence of the same UART commands with `input` / `expect` checks.
```bash
go run . -port /dev/ttyUSB0 test -list-configs
go run . -port /dev/ttyUSB0 test -list-scenarios
go run . -port /dev/ttyUSB0 test -config example-lab -scenario smoke
go run . -port /dev/ttyUSB0 test -config testdata/configs/my-lab.json -scenario smoke -v
```
See [`testdata/README.md`](testdata/README.md) for the JSON schema.
```bash
go run . -port /dev/ttyUSB0 unicast-test -client 16 -seq 42
```
On success the slave serial log should show `UNICAST TEST OK from master … seq=42`.
Example output:
```
clients (2):
[0] id=42 mac=aabbccddeeff ver=1 available=true used=false last_ping=250 last_success_ping=250
```
## Regenerate protobuf
```bash
protoc --go_out=./pb --go_opt=paths=source_relative \
--go_opt=Muart_messages.proto=powerpod/gotool/pb \
-I ../main/proto ../main/proto/uart_messages.proto
```