# 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
```

| Flag | Default | Description |
|------|---------|-------------|
| `-port` | (required) | Serial port on master UART (GPIO2/3 adapter) |
| `-baud` | `921600` | Must match firmware `UART_BAUD_RATE` |

Implements the VERSION command (`MessageType` = 3): sends framed `03`, decodes protobuf `UartMessage.version_response`.

## 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
```