### Complete Automation Example

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

This example demonstrates a full automation sequence using HIDController and SerialTransport. It opens Spotlight, types a command, and executes it. Ensure the correct serial port and baudrate are specified.

```python
from pych9329 import HIDController, SerialTransport
import time

with SerialTransport(port='/dev/ttyUSB0', baudrate=115200) as transport:
    controller = HIDController(transport, screen_width=1920, screen_height=1080)
    
    # Open Spotlight (macOS)
    controller.hotkey('cmd', 'space')
    time.sleep(0.5)
    
    # Type application name
    controller.write('Terminal')
    time.sleep(0.5)
    
    # Press Enter
    controller.press('enter')
    time.sleep(1)
    
    # Type command
    controller.write('echo "Hello from CH9329!"')
    controller.press('enter')
```

--------------------------------

### Install PyCH9329-HID Package

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Install the package using pip. Ensure Python 3 and pyserial are installed.

```bash
pip install pych9329-hid
```

--------------------------------

### Basic Usage - Low Level Protocol

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Demonstrates sending keyboard and mouse reports, and retrieving device information using the low-level CH9329 protocol. Requires SerialTransport setup.

```python
from pych9329 import CH9329, SerialTransport

# Create transport and CH9329 instance
with SerialTransport(port='/dev/ttyUSB0', baudrate=115200) as transport:
    ch9329 = CH9329(transport)
    
    # Send keyboard report
    ch9329.send_keyboard(modifier=0, keycodes=[0x04])
    
    # Send relative mouse movement
    ch9329.send_mouse_rel(dx=10, dy=5, buttons=0x01)
    
    # Send absolute mouse position
    ch9329.send_mouse_abs(x=100, y=200, buttons=0x01)
    
    # Get device information
    info = ch9329.get_info()
    print(f"Version: {info['version']}")
    print(f"USB Connected: {info['usb_connected']}")
    print(f"Num Lock: {info['num_lock_on']}")
    print(f"Caps Lock: {info['caps_lock_on']}")
    print(f"Scroll Lock: {info['scroll_lock_on']}")
```

--------------------------------

### Configuration and USB Descriptors

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Shows how to get, modify, and apply CH9329 configurations, set custom USB descriptors, and restore factory defaults. Includes chip reset.

```python
from pych9329 import CH9329, SerialTransport

with SerialTransport(port='/dev/ttyUSB0', baudrate=115200) as transport:
    ch9329 = CH9329(transport)
    
    # Get current configuration
    config = ch9329.get_config()
    # CH9329Config:
    # Work Mode: Keyboard+Mouse (Hardware)
    # Serial Mode: Protocol mode (Hardware)
    # Address: 0x00
    # Baud Rate: 9600
    # Packet Interval: 3ms
    # VID: 0x861A
    # PID: 0x29E1
    # Keyboard Submit Interval: 0ms
    # Keyboard Release Delay: 1ms
    # Auto Enter Flag: 0
    # Enter Characters: 0d00000000000000
    # Filter Strings: 0000000000000000
    # Custom Descriptor Enable: {'vendor': True, 'product': False, 'sn': False}
    # Keyboard Fast Submission: 0
      
    # Modify configuration
    config.baudrate = 9600
    config.vid = 0x1234
    config.pid = 0x5678
    
    # Enable vendor and product string descriptors
    config.custom_descriptor_enable = {'vendor': True, 'product': True, 'sn': False}
    
    # Apply configuration
    if ch9329.set_config(config):
        print("Configuration updated successfully!")
    
    # Set USB descriptors
    ch9329.set_usb_descriptor(0x00, "My Company")      # Vendor
    ch9329.set_usb_descriptor(0x01, "CH9329 Keyboard") # Product
    ch9329.set_usb_descriptor(0x02, "SN-12345")        # Serial Number
    
    # Read back USB descriptors
    vendor = ch9329.get_usb_descriptor(0x00)
    product = ch9329.get_usb_descriptor(0x01)
    serial = ch9329.get_usb_descriptor(0x02)
    print(f"Vendor: {vendor}, Product: {product}, SN: {serial}")
    
    # Restore factory defaults
    if ch9329.set_config_to_default():
        print("Factory settings restored!")
    
    # Reset chip
    ch9329.chip_reset()
```

--------------------------------

### Get Device Information

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Retrieves device information as a dictionary.

```python
controller.getDeviceInfo()
```

--------------------------------

### Configuration Management

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Methods for managing device configuration, including getting, setting, and restoring default settings, as well as performing a chip reset.

```APIDOC
## Configuration Management

### `get_config()`

#### Description
Get device configuration.

#### Returns
`CH9329Config` object or `None`

### `set_config(config)`

#### Description
Set device configuration.

#### Parameters
- **config** (`CH9329Config`)

#### Returns
`bool` - True if successful

### `set_config_to_default()`

#### Description
Restore factory default settings.

#### Returns
`bool` - True if successful

### `chip_reset()`

#### Description
Perform software reset.

#### Returns
`bool` - True if successful
```

--------------------------------

### Control Button Event Handlers

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/tests/functional/test_bench.html

Manages the start/stop capturing functionality and clears the log and canvas. The 'start' button toggles the capturing state, while 'stop' and 'clear-all' provide reset functionalities.

```javascript
startBtn.onclick = () => {
  capturing = true;
  startBtn.classList.add('on');
  appendLog({type:'sys', key:'start'});
}

document.getElementById('stop').onclick = () => {
  capturing = false;
  startBtn.classList.remove('on');
  appendLog({type:'sys', key:'stop'});
}

document.getElementById('clear-all').onclick = () => {
  logEl.innerHTML = '';
  clearCanvas();
  document.getElementById('notepad').value = '';
}
```

--------------------------------

### Canvas Drag and Draw Logic

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/tests/functional/test_bench.html

Manages drawing on a canvas via mouse events (mousedown, mousemove, mouseup), capturing drag start, movement, and end, along with associated coordinates and modifier keys.

```javascript
function getCanvasPos(e) {
  const rect = canvas.getBoundingClientRect();
  return {
    x: e.clientX - rect.left,
    y: e.clientY - rect.top
  };
}

canvas.addEventListener('mousedown', (e) => {
  if(!capturing) return;
  if(e.button !== 0) return; // Only allow left mouse button
  isDrawing = true;
  const pos = getCanvasPos(e);
  ctx.beginPath();
  ctx.moveTo(pos.x, pos.y);
  updateMouseButtonPills(e);
  appendLog({type:'drag', key:'Start', shift:e.shiftKey, meta:e.metaKey, detail:`Scr(${e.screenX},${e.screenY})`});
});

canvas.addEventListener('mousemove', (e) => {
  if(!isDrawing || !capturing) return;
  updateMouseButtonPills(e);
  const pos = getCanvasPos(e);
  ctx.lineTo(pos.x, pos.y);
  ctx.stroke();
});

canvas.addEventListener('mouseup', () => {
  isDrawing = false;
  ctx.closePath();
  updateMouseButtonPills(event);
  appendLog({type:'drag', key:'End'});
});

function clearCanvas() {
  ctx.clearRect(0, 0, canvas.width, canvas.height);
}
```

--------------------------------

### Import HIDController Options

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Choose between the full package name or a recommended short alias for importing HIDController.

```python
# Option 1: Full package name
from pych9329_hid import HIDController

# Option 2: Short alias (recommended)
from pych9329 import HIDController
```

--------------------------------

### Set USB Product String Descriptor

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Sets the USB product string descriptor. Returns true if successful.

```python
controller.set_usb_descriptor(0x01, "MyProduct")
```

--------------------------------

### Set Device Configuration

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Sets the device configuration. Returns true if successful.

```python
controller.set_config(config)
```

--------------------------------

### Press and Hold a Key

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates pressing and holding a keyboard key. Use this in combination with `keyUp`.

```python
controller.keyDown('shift')
```

--------------------------------

### Set USB Vendor String Descriptor

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Sets the USB vendor string descriptor. Returns true if successful.

```python
controller.set_usb_descriptor(0x00, "MyVendor")
```

--------------------------------

### CH9329.get_info()

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Retrieves essential information about the connected CH9329 device, including firmware version and lock key states.

```APIDOC
## CH9329.get_info()

### Description
Get device information.

### Method
`get_info()`

### Returns
`dict` with keys: `version`, `usb_connected`, `num_lock_on`, `caps_lock_on`, `scroll_lock_on`
```

--------------------------------

### Perform Software Reset

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Performs a software reset on the device. Returns true if successful.

```python
controller.chip_reset()
```

--------------------------------

### Restore Factory Default Configuration

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Restores the device to its factory default settings. Returns true if successful.

```python
controller.set_config_to_default()
```

--------------------------------

### List Available Serial Devices

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Use this snippet to find and display available serial ports on your system. It iterates through detected ports and prints their device path and description.

```python
import serial.tools.list_ports

ports = serial.tools.list_ports.comports()
for port in ports:
    print(f"Port: {port.device}, Description: {port.description}")
```

--------------------------------

### Release a Key

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates releasing a keyboard key. Use this after `keyDown`.

```python
controller.keyUp('shift')
```

--------------------------------

### Press Key Combination

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates pressing a combination of keys, like hotkeys or shortcuts.

```python
controller.hotkey('cmd', 'a')
```

--------------------------------

### Press and Release a Key

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates pressing and releasing a keyboard key. Use this for single key presses.

```python
controller.press('a')
```

--------------------------------

### Press Numpad Key

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates pressing a key on the numeric keypad.

```python
controller.numpadPress('7')
```

--------------------------------

### Scrollable Container Initialization

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/tests/functional/test_bench.html

Initializes and populates vertical and horizontal scrollable containers with grid cells, setting up event listeners to track scroll position, delta, and direction.

```javascript
function initScrollContainers() {
  const vscroll = document.getElementById('vscroll-container');
  const hscroll = document.getElementById('hscroll-container');
  if(!vscroll || !hscroll) return;
  const colors = ['#FF6B6B', '#4ECDC4', '#45B7D1', '#FFA07A', '#98D8C8', '#F7DC6F', '#BB8FCE', '#85C1E2', '#F8B739', '#6C5CE7'];

  // 竖直滚动 - 20x20 网格
  const vGrid = document.createElement('div');
  vGrid.className = 'grid-content';
  for(let i = 0; i < 400; i++) {
    const cell = document.createElement('div');
    cell.className = 'grid-cell';
    cell.style.backgroundColor = colors[i % colors.length];
    cell.textContent = i + 1;
    vGrid.appendChild(cell);
  }
  vscroll.appendChild(vGrid);

  // 水平滚动 - 40x6 网格
  const hGrid = document.createElement('div');
  hGrid.className = 'grid-content h-scroll';
  for(let i = 0; i < 240; i++) {
    const cell = document.createElement('div');
    cell.className = 'grid-cell';
    cell.style.backgroundColor = colors[i % colors.length];
    cell.textContent = i + 1;
    hGrid.appendChild(cell);
  }
  hscroll.appendChild(hGrid);

  // 竖直滚动事件监听
  let lastVScroll = 0;
  vscroll.addEventListener('scroll', (e) => {
    const current = e.target.scrollTop;
    const delta = current - lastVScroll;
    const direction = delta > 0 ? '↓' : delta < 0 ? '↑' : '';
    document.getElementById('vscroll-pos').textContent = current + 'px';
    document.getElementById('vscroll-delta').textContent = (delta >= 0 ? '+' : '') + delta + 'px';
    document.getElementById('vscroll-dir').textContent = direction;
    if(capturing) {
      appendLog({ type: 'vscroll', key: 'VScroll', detail: `Position: ${current}px, Delta: ${delta > 0 ? '+' : ''}${delta}px ${direction}` });
    }
    lastVScroll = current;
  });

  // 水平滚动事件监听
  let lastHScroll = 0;
  hscroll.addEventListener('scroll', (e) => {
    const current = e.target.scrollLeft;
    const delta = current - lastHScroll;
    const direction = delta > 0 ? '→' : delta < 0 ? '←' : '';
    document.getElementById('hscroll-pos').textContent = current + 'px';
    document.getElementById('hscroll-delta').textContent = (delta >= 0 ? '+' : '') + delta + 'px';
    document.getElementById('hscroll-dir').textContent = direction;
    if(capturing) {
      appendLog({ type: 'hscroll', key: 'HScroll', detail: `Position: ${current}px, Delta: ${delta > 0 ? '+' : ''}${delta}px ${direction}` });
    }
    lastHScroll = current;
  });
}

initScrollContainers();
```

--------------------------------

### Click Mouse Button

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates a mouse button click. Supports specifying the button and number of clicks.

```python
controller.click('left', clicks=2)
```

--------------------------------

### Mouse Event Handling

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/tests/functional/test_bench.html

Handles mousedown, dblclick, and contextmenu events for a button, logging event details.

```javascript
const btn = document.getElementById('btn');

function handleMouse(e, type) {
  const isCorrect = true;
  appendLog({ type: type, key: e.button, shift: e.shiftKey, ctrl: e.ctrlKey, alt: e.altKey, meta: e.metaKey, detail: `Pos:(${e.screenX},${e.screenY}) [${isCorrect?'✓':'✗'}]` });
};

btn.addEventListener('mousedown', (e) => handleMouse(e, 'mousedown'));
btn.addEventListener('dblclick', (e) => handleMouse(e, 'dblclick'));
btn.addEventListener('contextmenu', (e) => handleMouse(e, 'contextmenu'));
```

--------------------------------

### USB String Descriptors

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Methods for retrieving and setting USB string descriptors, such as vendor, product, and serial number.

```APIDOC
## USB String Descriptors

### `get_usb_descriptor(type)`

#### Description
Get USB string descriptor.

#### Parameters
- **type** (int) - USB Descriptor Type (e.g., 0x00 for Vendor, 0x01 for Product, 0x02 for Serial Number)

#### Returns
`str` or `None`

### `set_usb_descriptor(type, string)`

#### Description
Set USB string descriptor.

#### Parameters
- **type** (int) - USB Descriptor Type
- **string** (str) - The string to set for the descriptor

#### Returns
`bool` - True if successful
```

--------------------------------

### Global Keyboard Event Listener

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/tests/functional/test_bench.html

Captures and logs all keydown and keyup events globally, recording the key pressed, its code, and modifier key states (shift, ctrl, alt, meta).

```javascript
window.addEventListener('keydown', (e) => {
  if(!capturing) return;
  appendLog({type:'keydown', key:e.key, code:e.code, shift:e.shiftKey, ctrl:e.ctrlKey, alt:e.altKey, meta:e.metaKey});
});

window.addEventListener('keyup', (e) => {
  if(!capturing) return;
  appendLog({type:'keyup', key:e.key, code:e.code, shift:e.shiftKey, ctrl:e.ctrlKey, alt:e.altKey, meta:e.metaKey});
});
```

--------------------------------

### Press and Hold Mouse Button

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates pressing and holding a mouse button. Use in conjunction with `mouseUp`.

```python
controller.mouseDown('left')
```

--------------------------------

### High-Level HID Controller Operations

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Utilizes the HIDController for simplified keyboard, mouse, and scrolling operations. Requires SerialTransport and screen dimensions.

```python
from pych9329 import HIDController, SerialTransport

# Create HID controller
with SerialTransport(port='/dev/ttyUSB0', baudrate=115200) as transport:
    controller = HIDController(transport, screen_width=1920, screen_height=1080)
    
    # Keyboard operations
    controller.press('a')
    controller.write('Hello World')
    controller.hotkey('cmd', 'space')
    
    # Mouse operations
    controller.moveTo(100, 200, duration=0.5)
    controller.click(button='left')
    controller.dragRel(50, 30)
    
    # Scrolling
    controller.scroll(5)  # Scroll up
    controller.hscroll(-2)  # Scroll left
```

--------------------------------

### Release Mouse Button

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates releasing a mouse button. Use after `mouseDown`.

```python
controller.mouseUp('left')
```

--------------------------------

### Set USB Serial Number String Descriptor

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Sets the USB serial number string descriptor. Returns true if successful.

```python
controller.set_usb_descriptor(0x02, "12345")
```

--------------------------------

### Send Keyboard Report

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Sends a keyboard report with specified modifiers and keycodes. Returns true if successful.

```python
controller.send_keyboard(modifier, keycodes)
```

--------------------------------

### HIDController Hardware Operations

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

High-level methods for hardware-related operations, such as resetting the cursor and retrieving device information.

```APIDOC
## HIDController (High-Level API) - Hardware Operations

### `reset()`

#### Description
Reset cursor to (0,0).

#### Returns
None

### `getDeviceInfo()`

#### Description
Get device information.

#### Returns
`dict` with device info
```

--------------------------------

### Horizontal Scroll

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates horizontal scrolling by a specified number of clicks.

```python
controller.hscroll(-2)
```

--------------------------------

### Drag Mouse to Coordinates

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates dragging the mouse to absolute coordinates (x, y) with the button held down.

```python
controller.dragTo(100, 200)
```

--------------------------------

### Mouse Operations

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Methods for sending mouse movements (relative and absolute) and button events.

```APIDOC
## Mouse Operations

### `send_mouse_rel(dx, dy, buttons, wheel)`

#### Description
Send relative mouse movement.

#### Parameters
- **dx** (int) - Change in x-coordinate
- **dy** (int) - Change in y-coordinate
- **buttons** (int) - Mouse buttons state
- **wheel** (int) - Mouse wheel movement

#### Returns
`bool` - True if successful

### `send_mouse_abs(x, y, buttons, wheel)`

#### Description
Send absolute mouse position.

#### Parameters
- **x** (int) - Absolute x-coordinate
- **y** (int) - Absolute y-coordinate
- **buttons** (int) - Mouse buttons state
- **wheel** (int) - Mouse wheel movement

#### Returns
`bool` - True if successful
```

--------------------------------

### HIDController Keyboard Operations

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

High-level methods for controlling keyboard input, including pressing, holding, releasing keys, typing text, and hotkeys.

```APIDOC
## HIDController (High-Level API) - Keyboard Operations

### `press(key)`

#### Description
Press and release a key.

#### Parameters
- **key** (str) - The key to press and release.

#### Example
`controller.press('a')`

### `keyDown(key)`

#### Description
Press and hold a key.

#### Parameters
- **key** (str) - The key to press and hold.

#### Example
`controller.keyDown('shift')`

### `keyUp(key)`

#### Description
Release a key.

#### Parameters
- **key** (str) - The key to release.

#### Example
`controller.keyUp('shift')`

### `write(text)`

#### Description
Type a string.

#### Parameters
- **text** (str) - The string to type.

#### Example
`controller.write('Hello\n')`

### `hotkey(*keys)`

#### Description
Press a key combination.

#### Parameters
- **keys** (str) - Variable number of keys to press in combination.

#### Example
`controller.hotkey('cmd', 'a')`

### `releaseAllKey()`

#### Description
Release all keyboard keys.

### `numpadPress(key)`

#### Description
Press a numpad key.

#### Parameters
- **key** (str) - The numpad key to press.

#### Example
`controller.numpadPress('7')`

### `numpadWrite(text)`

#### Description
Type numpad characters.

#### Parameters
- **text** (str) - The string of numpad characters to type.

#### Example
`controller.numpadWrite('123')`
```

--------------------------------

### HIDController Scrolling

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

High-level methods for performing mouse wheel scrolling, both vertically and horizontally.

```APIDOC
## HIDController (High-Level API) - Scrolling

### `scroll(clicks)`

#### Description
Perform a vertical scroll.

#### Parameters
- **clicks** (int) - The number of scroll clicks (positive for down, negative for up).

#### Example
`controller.scroll(5)`

### `hscroll(clicks)`

#### Description
Perform a horizontal scroll.

#### Parameters
- **clicks** (int) - The number of horizontal scroll clicks (positive for right, negative for left).

#### Example
`controller.hscroll(-2)`
```

--------------------------------

### Send Relative Mouse Movement

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Sends a relative mouse movement report. Returns true if successful.

```python
controller.send_mouse_rel(dx, dy, buttons, wheel)
```

--------------------------------

### HIDController Mouse Movement

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

High-level methods for controlling mouse cursor movement, both to absolute coordinates and relative positions.

```APIDOC
## HIDController (High-Level API) - Mouse Movement

### `moveTo(x, y, duration)`

#### Description
Move the mouse cursor to specified coordinates.

#### Parameters
- **x** (int) - The target x-coordinate.
- **y** (int) - The target y-coordinate.
- **duration** (float) - The time in seconds to complete the movement (optional).

#### Example
`controller.moveTo(100, 200, duration=0.5)`

### `moveRel(dx, dy, duration)`

#### Description
Move the mouse cursor relatively from its current position.

#### Parameters
- **dx** (int) - The change in the x-coordinate.
- **dy** (int) - The change in the y-coordinate.
- **duration** (float) - The time in seconds to complete the movement (optional).

#### Example
`controller.moveRel(10, 5)`
```

--------------------------------

### Vertical Scroll

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates vertical scrolling by a specified number of clicks.

```python
controller.scroll(5)
```

--------------------------------

### Send Absolute Mouse Position

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Sends an absolute mouse position report. Returns true if successful.

```python
controller.send_mouse_abs(x, y, buttons, wheel)
```

--------------------------------

### Keyboard Operations

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Methods for sending keyboard reports, including key codes and modifiers.

```APIDOC
## Keyboard Operations

### `send_keyboard(modifier, keycodes)`

#### Description
Send keyboard report.

#### Parameters
- **modifier** (int) - Modifier keys
- **keycodes** (list of int) - Key codes to send

#### Returns
`bool` - True if successful
```

--------------------------------

### Drag Mouse Relatively

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Simulates dragging the mouse by a relative amount (dx, dy) with the button held down.

```python
controller.dragRel(50, 30)
```

--------------------------------

### HIDController Mouse Button Operations

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

High-level methods for controlling mouse button actions, including clicks, presses, and releases.

```APIDOC
## HIDController (High-Level API) - Mouse Button Operations

### `click(button, clicks)`

#### Description
Click a mouse button.

#### Parameters
- **button** (str) - The mouse button to click ('left', 'right', 'middle').
- **clicks** (int) - The number of clicks (default is 1).

#### Example
`controller.click('left', clicks=2)`

### `mouseDown(button)`

#### Description
Press and hold a mouse button.

#### Parameters
- **button** (str) - The mouse button to press.

#### Example
`controller.mouseDown('left')`

### `mouseUp(button)`

#### Description
Release a mouse button.

#### Parameters
- **button** (str) - The mouse button to release.

#### Example
`controller.mouseUp('left')`

### `releaseMouseButton()`

#### Description
Release all mouse buttons.

#### Example
`controller.releaseMouseButton()`
```

--------------------------------

### Type a String

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Types a given string using the keyboard. Handles special characters and newlines.

```python
controller.write('Hello\n')
```

--------------------------------

### Release All Keyboard Keys

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Releases all currently pressed keyboard keys.

```python
controller.releaseAllKey()
```

--------------------------------

### Move Mouse to Coordinates

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Moves the mouse cursor to absolute coordinates (x, y) over a specified duration.

```python
controller.moveTo(100, 200, duration=0.5)
```

--------------------------------

### Read All Available Data from Serial Port

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Reads all currently available bytes from the serial port.

```python
transport.read_all()
```

--------------------------------

### HIDController Drag Operations

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

High-level methods for performing drag operations with the mouse, both relative and to absolute coordinates.

```APIDOC
## HIDController (High-Level API) - Drag Operations

### `dragRel(dx, dy)`

#### Description
Perform a relative drag operation.

#### Parameters
- **dx** (int) - The relative change in the x-coordinate.
- **dy** (int) - The relative change in the y-coordinate.

#### Example
`controller.dragRel(50, 30)`

### `dragTo(x, y)`

#### Description
Perform a drag operation to specified coordinates.

#### Parameters
- **x** (int) - The target x-coordinate.
- **y** (int) - The target y-coordinate.

#### Example
`controller.dragTo(100, 200)`
```

--------------------------------

### Write Raw Bytes to Serial Port

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Writes raw bytes directly to the serial port.

```python
transport.write(data)
```

--------------------------------

### SerialTransport Layer

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Methods for interacting with the serial transport layer, including writing raw data, reading data, and managing the port connection.

```APIDOC
## SerialTransport (Transport Layer)

### `write(data)`

#### Description
Write raw bytes to port.

#### Parameters
- **data** (bytes) - The bytes to write.

#### Returns
None

### `read(size)`

#### Description
Read up to `size` bytes.

#### Parameters
- **size** (int) - The maximum number of bytes to read.

#### Returns
`bytes` read (may be empty on timeout)

### `read_all()`

#### Description
Read all available data.

#### Returns
All available bytes

### `is_open()`

#### Description
Check if port is open.

#### Returns
`bool`

### `close()`

#### Description
Close the serial port.

#### Returns
None
```

--------------------------------

### Move Mouse Relatively

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Moves the mouse cursor by a relative amount (dx, dy).

```python
controller.moveRel(10, 5)
```

--------------------------------

### Release All Mouse Buttons

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Releases all currently pressed mouse buttons.

```python
controller.releaseMouseButton()
```

--------------------------------

### Read Bytes from Serial Port

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Reads up to a specified number of bytes from the serial port. May return empty bytes on timeout.

```python
transport.read(size)
```

--------------------------------

### Check if Serial Port is Open

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Returns a boolean indicating whether the serial port is currently open.

```python
transport.is_open()
```

--------------------------------

### Reset Cursor Position

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Resets the mouse cursor position to (0,0).

```python
controller.reset()
```

--------------------------------

### Type Numpad Characters

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Types a string of numeric characters using the numpad.

```python
controller.numpadWrite('123')
```

--------------------------------

### Close Serial Port

Source: https://github.com/zonghai-li/pych9329-hid/blob/main/README.md

Closes the serial port connection.

```python
transport.close()
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.