# badges

TinyGo badge firmware for multiple hardware targets (GopherBadge, NiceBadge, GoBadge/PyBadge).

## Hardware targets

| Target | Build tag | Resolution |
|--------|-----------|------------|
| GopherBadge | `gopher_badge` | 320×240 |
| NiceBadge | `nicenano` | 240×135 |
| GoBadge / PyBadge | `pybadge` | 160×128 |

## Generating logo.bin

The badge firmware embeds a `logo.bin` file displayed at boot (`showLogoBin` in `badge.go`).  
Use the `logogen` command to convert any image to the required hex format.

### Setup

```sh
cd cmd/logogen
go mod download
```

### Usage

```sh
# By target name
go run . -size nicebadge   -image tinygo
go run . -size gopherbadge -image gopherconeu
go run . -size gobadge     -image golab

# By explicit resolution
go run . -size 320x240 -image /path/to/logo.jpg

# Write directly to the project root logo.bin
go run . -size nicebadge -image tinygo -output ../../logo.bin
```

### Flags

| Flag | Default | Description |
|------|---------|-------------|
| `-size` | *(required)* | Target name (`nicebadge`, `gopherbadge`, `gobadge`, `pybadge`) or explicit resolution (`320x240`) |
| `-image` | *(required)* | File path (relative or absolute) or short name |
| `-output` | `logo.bin` | Output file |
| `-images-dir` | `images` | Directory with source images |
| `-cache-dir` | `cache` | Directory for cached `.bin` files |

### Adding images

Place source images inside `cmd/logogen/images/`:

```
cmd/logogen/images/
  tinygo.jpg               ← source image for short name "tinygo"
  tinygo_240x135.png       ← predefined variant for nicebadge (skip resize)
  tinygo_320x240.png       ← predefined variant for gopherbadge (skip resize)
  gopherconeu.jpg
  golab.png
  ...
```

**Resolution priority** for a given short name + target:

1. `<name>_<WxH>.png` / `.jpg` — predefined resized variant, used as-is (no resize)
2. `<name>.png` / `.jpg` / `.jpeg` — base image, resized with BiLinear interpolation
3. Cache hit (`cache/<name>_<WxH>.bin`) — skips all image processing on repeat runs

Generated `.bin` files in `cache/` are gitignored.