|
| 1 | +# NanoKVM Driver |
| 2 | + |
| 3 | +`jumpstarter-driver-nanokvm` provides comprehensive support for [NanoKVM](https://github.com/sipeed/NanoKVM) devices, enabling remote KVM (Keyboard, Video, Mouse) control over the network. |
| 4 | + |
| 5 | +## Features |
| 6 | + |
| 7 | +- **Video Streaming**: Access live video feed from the connected device |
| 8 | +- **Snapshot Capture**: Take screenshots of the video stream |
| 9 | +- **Keyboard Control**: Send text and keystrokes via HID emulation |
| 10 | +- **Mouse Control**: Full mouse support via WebSocket |
| 11 | + - Absolute positioning (0-65535 coordinate system) |
| 12 | + - Relative movement |
| 13 | + - Left/right/middle button clicks |
| 14 | + - Mouse wheel scrolling |
| 15 | +- **Device Management**: Get device info, reboot the NanoKVM |
| 16 | +- **Composite Driver**: Access all functionality through a unified interface |
| 17 | + |
| 18 | +## Installation |
| 19 | + |
| 20 | +```{code-block} console |
| 21 | +:substitutions: |
| 22 | +$ pip3 install --extra-index-url {{index_url}} jumpstarter-driver-nanokvm |
| 23 | +``` |
| 24 | + |
| 25 | +## Configuration |
| 26 | + |
| 27 | +### Basic Configuration |
| 28 | + |
| 29 | +```yaml |
| 30 | +export: |
| 31 | + nanokvm: |
| 32 | + type: jumpstarter_driver_nanokvm.driver.NanoKVM |
| 33 | + config: |
| 34 | + host: "nanokvm.local" # Hostname or IP address |
| 35 | + username: "admin" # Default NanoKVM web interface username |
| 36 | + password: "admin" # Default NanoKVM web interface password |
| 37 | +``` |
| 38 | +
|
| 39 | +### Advanced Configuration |
| 40 | +
|
| 41 | +```yaml |
| 42 | +export: |
| 43 | + nanokvm: |
| 44 | + type: jumpstarter_driver_nanokvm.driver.NanoKVM |
| 45 | + config: |
| 46 | + host: "192.168.1.100" |
| 47 | + username: "admin" |
| 48 | + password: "your-password" |
| 49 | + # Optional: SSH access for serial console (future feature) |
| 50 | + enable_serial: false |
| 51 | + ssh_username: "root" |
| 52 | + ssh_password: "root" |
| 53 | + ssh_port: 22 |
| 54 | +``` |
| 55 | +
|
| 56 | +### Config Parameters |
| 57 | +
|
| 58 | +| Parameter | Description | Type | Required | Default | |
| 59 | +| -------------- | ------------------------------------------ | ----- | -------- | ------- | |
| 60 | +| host | NanoKVM hostname or IP address | str | yes | | |
| 61 | +| username | Web interface username | str | no | "admin" | |
| 62 | +| password | Web interface password | str | no | "admin" | |
| 63 | +| enable_serial | Enable serial console access via SSH | bool | no | false | |
| 64 | +| ssh_username | SSH username for serial console | str | no | "root" | |
| 65 | +| ssh_password | SSH password for serial console | str | no | "root" | |
| 66 | +| ssh_port | SSH port for serial console | int | no | 22 | |
| 67 | +
|
| 68 | +## Architecture |
| 69 | +
|
| 70 | +The NanoKVM driver is a composite driver that provides three main interfaces: |
| 71 | +
|
| 72 | +1. **video**: Video streaming and snapshot capture |
| 73 | +2. **hid**: Keyboard and mouse HID control |
| 74 | +3. **serial**: Serial console access (optional, future feature) |
| 75 | +
|
| 76 | +## API Reference |
| 77 | +
|
| 78 | +### NanoKVMClient |
| 79 | +
|
| 80 | +```{eval-rst} |
| 81 | +.. autoclass:: jumpstarter_driver_nanokvm.client.NanoKVMClient() |
| 82 | + :members: get_info, reboot |
| 83 | +``` |
| 84 | +
|
| 85 | +### NanoKVMVideoClient |
| 86 | +
|
| 87 | +```{eval-rst} |
| 88 | +.. autoclass:: jumpstarter_driver_nanokvm.client.NanoKVMVideoClient() |
| 89 | + :members: snapshot |
| 90 | +``` |
| 91 | +
|
| 92 | +### NanoKVMHIDClient |
| 93 | +
|
| 94 | +```{eval-rst} |
| 95 | +.. autoclass:: jumpstarter_driver_nanokvm.client.NanoKVMHIDClient() |
| 96 | + :members: paste_text, press_key, reset_hid, mouse_move_abs, mouse_move_rel, mouse_click, mouse_scroll |
| 97 | +``` |
| 98 | +
|
| 99 | +## CLI Usage |
| 100 | +
|
| 101 | +The NanoKVM driver provides CLI commands accessible through the `jmp shell` command: |
| 102 | + |
| 103 | +### Main Commands |
| 104 | + |
| 105 | +```bash |
| 106 | +# Get device information |
| 107 | +j nanokvm info |
| 108 | +
|
| 109 | +# Reboot the NanoKVM device (with confirmation) |
| 110 | +j nanokvm reboot |
| 111 | +``` |
| 112 | + |
| 113 | +### Video Commands |
| 114 | + |
| 115 | +```bash |
| 116 | +# Take a snapshot (saves to snapshot.jpg by default) |
| 117 | +j nanokvm video snapshot |
| 118 | +
|
| 119 | +# Take a snapshot with custom filename |
| 120 | +j nanokvm video snapshot my_screenshot.jpg |
| 121 | +``` |
| 122 | + |
| 123 | +### HID Commands |
| 124 | + |
| 125 | +#### Keyboard Commands |
| 126 | + |
| 127 | +```bash |
| 128 | +# Paste text via keyboard HID |
| 129 | +j nanokvm hid paste "Hello, World!" |
| 130 | +
|
| 131 | +# Send commands with newline (use $'...' syntax in bash for escape sequences) |
| 132 | +j nanokvm hid paste $'root\n' |
| 133 | +
|
| 134 | +# Or use double backslash |
| 135 | +j nanokvm hid paste "root\\n" |
| 136 | +
|
| 137 | +# Send multiple lines |
| 138 | +j nanokvm hid paste $'ls -la\ndate\n' |
| 139 | +
|
| 140 | +# Press a single key |
| 141 | +j nanokvm hid press "a" |
| 142 | +
|
| 143 | +# Press special keys |
| 144 | +j nanokvm hid press $'\n' # Enter |
| 145 | +j nanokvm hid press $'\t' # Tab |
| 146 | +
|
| 147 | +# Reset HID subsystem if it's not responding |
| 148 | +j nanokvm hid reset |
| 149 | +``` |
| 150 | + |
| 151 | +#### Mouse Commands |
| 152 | + |
| 153 | +```bash |
| 154 | +# Move mouse to absolute coordinates (0-65535, scaled to screen) |
| 155 | +j nanokvm hid mouse move 32768 32768 # Center of screen |
| 156 | +
|
| 157 | +# Move mouse relatively (-127 to 127) |
| 158 | +j nanokvm hid mouse move-rel 50 50 # Move right and down |
| 159 | +
|
| 160 | +# Click at current position (default: left button) |
| 161 | +j nanokvm hid mouse click |
| 162 | +
|
| 163 | +# Click with specific button |
| 164 | +j nanokvm hid mouse click --button right |
| 165 | +
|
| 166 | +# Click at specific coordinates |
| 167 | +j nanokvm hid mouse click --x 32768 --y 32768 --button left |
| 168 | +
|
| 169 | +# Scroll (default: down 5 units) |
| 170 | +j nanokvm hid mouse scroll |
| 171 | +
|
| 172 | +# Scroll up |
| 173 | +j nanokvm hid mouse scroll --dy 5 |
| 174 | +
|
| 175 | +# Scroll down |
| 176 | +j nanokvm hid mouse scroll --dy -5 |
| 177 | +``` |
| 178 | + |
| 179 | +### Example Session |
| 180 | + |
| 181 | +```bash |
| 182 | +# Connect to the exporter |
| 183 | +jmp shell -l my=device |
| 184 | +
|
| 185 | +# Inside the shell, use the commands |
| 186 | +j nanokvm info |
| 187 | +j nanokvm video snapshot my_screen.jpg |
| 188 | +j nanokvm hid paste "echo 'Hello from NanoKVM'\n" |
| 189 | +``` |
| 190 | + |
| 191 | +## Usage Examples |
| 192 | + |
| 193 | +### Basic Setup |
| 194 | + |
| 195 | +```python |
| 196 | +image = nanokvm.video.snapshot() |
| 197 | +image.save("snapshot.jpg") |
| 198 | +print(f"Snapshot size: {image.size}") |
| 199 | +``` |
| 200 | + |
| 201 | +### Keyboard Control |
| 202 | + |
| 203 | +```python |
| 204 | +# Paste text to the connected device |
| 205 | +nanokvm.hid.paste_text("Hello from Jumpstarter!\n") |
| 206 | +
|
| 207 | +# Send commands |
| 208 | +nanokvm.hid.paste_text("ls -la\n") |
| 209 | +
|
| 210 | +# Press individual keys |
| 211 | +nanokvm.hid.press_key("a") |
| 212 | +nanokvm.hid.press_key("\n") # Enter |
| 213 | +nanokvm.hid.press_key("\t") # Tab |
| 214 | +``` |
| 215 | + |
| 216 | +### Mouse Control |
| 217 | + |
| 218 | +```python |
| 219 | +# Move mouse to center of screen |
| 220 | +nanokvm.hid.mouse_move_abs(32768, 32768) |
| 221 | +
|
| 222 | +# Click left button |
| 223 | +nanokvm.hid.mouse_click("left") |
| 224 | +
|
| 225 | +# Click at specific coordinates |
| 226 | +nanokvm.hid.mouse_click("left", x=32768, y=16384) |
| 227 | +
|
| 228 | +# Move mouse relatively |
| 229 | +nanokvm.hid.mouse_move_rel(50, 50) # Move right and down |
| 230 | +
|
| 231 | +# Scroll up |
| 232 | +nanokvm.hid.mouse_scroll(0, 5) |
| 233 | +
|
| 234 | +# Scroll down |
| 235 | +nanokvm.hid.mouse_scroll(0, -5) |
| 236 | +``` |
| 237 | + |
| 238 | +### Device Management |
| 239 | + |
| 240 | +```python |
| 241 | +# Get device info |
| 242 | +info = nanokvm.get_info() |
| 243 | +print(f"Device: {info['mdns']}") |
| 244 | +print(f"IPs: {info['ips']}") |
| 245 | +print(f"Application version: {info['application']}") |
| 246 | +
|
| 247 | +# Reset HID |
| 248 | +nanokvm.hid.reset_hid() |
| 249 | +``` |
| 250 | + |
| 251 | + |
| 252 | +## Character Support for paste_text() |
| 253 | + |
| 254 | +The `paste_text()` method supports a limited character set due to HID keyboard constraints: |
| 255 | + |
| 256 | +- Alphanumeric: `A-Z`, `a-z`, `0-9` |
| 257 | +- Punctuation: `` `~!@#$%^&*()-_=+[]{}\|;:'",.<>/? `` |
| 258 | +- Whitespace: Tab (`\t`), Newline (`\n`), Space |
| 259 | +- Not supported: Extended Unicode, emoji, special control characters |
| 260 | + |
| 261 | + |
| 262 | +## Related Documentation |
| 263 | + |
| 264 | +- [NanoKVM GitHub](https://github.com/sipeed/NanoKVM) |
| 265 | +- [python-nanokvm Library](https://github.com/puddly/python-nanokvm) |
| 266 | +- [Jumpstarter Documentation](https://jumpstarter.dev) |
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