Initial commit: Add CEC control script for Raspberry Pi 4

- Add cec-control.sh with power, volume, and input commands
- Add README with installation and usage instructions

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

README.md

@@ -0,0 +1,71 @@
+# CEC Control for Raspberry Pi 4
+
+Control HDMI-connected devices (TVs, receivers, etc.) from your Raspberry Pi 4 using CEC (Consumer Electronics Control).
+
+## Installation
+
+1. Install the required CEC library:
+```bash
+sudo apt-get update
+sudo apt-get install libcec-rpi
+```
+
+2. Make the script executable (already done):
+```bash
+chmod +x cec-control.sh
+```
+
+## Usage
+
+```bash
+./cec-control.sh <command> [options]
+```
+
+## Available Commands
+
+| Command | Description | Example |
+|---------|-------------|---------|
+| `tv-on` | Turn on the TV | `./cec-control.sh tv-on` |
+| `tv-off` | Turn off the TV | `./cec-control.sh tv-off` |
+| `standby` | Put TV in standby | `./cec-control.sh standby` |
+| `wake` | Wake TV from standby | `./cec-control.sh wake` |
+| `vol-up` | Increase volume | `./cec-control.sh vol-up` |
+| `vol-down` | Decrease volume | `./cec-control.sh vol-down` |
+| `mute` | Mute audio | `./cec-control.sh mute` |
+| `input <port>` | Switch HDMI input (0-15) | `./cec-control.sh input 1` |
+| `source <device>` | Switch source device (0-15) | `./cec-control.sh source 2` |
+| `scan` | Scan for CEC devices | `./cec-control.sh scan` |
+| `status` | Show CEC adapter status | `./cec-control.sh status` |
+| `info` | Show TV information | `./cec-control.sh info` |
+| `raw <command>` | Send raw CEC command | `./cec-control.sh raw 4f:82:10:00` |
+| `help` | Show help message | `./cec-control.sh help` |
+
+## Quick Start
+
+1. Connect your Raspberry Pi to your TV via HDMI
+2. Enable CEC on your TV (usually in settings)
+3. Test the connection:
+```bash
+./cec-control.sh scan
+```
+4. Turn on your TV:
+```bash
+./cec-control.sh tv-on
+```
+
+## Troubleshooting
+
+- **CEC not working**: Make sure CEC is enabled in your TV settings
+- **Permission denied**: Run with `sudo` if needed
+- **Device not found**: Check HDMI connection and try rescanning with `scan` command
+
+## Advanced Usage
+
+You can integrate this script into your own automation:
+```bash
+# Turn on TV and switch to input 1
+./cec-control.sh tv-on && sleep 2 && ./cec-control.sh input 1
+
+# Use in cron jobs or other scripts
+@reboot /path/to/cec-control.sh tv-on
+```