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>

cec-control.sh

@@ -0,0 +1,188 @@
+#!/bin/bash
+
+# CEC Control Script for Raspberry Pi 4
+# Requires: libcec (cec-client)
+# Install with: sudo apt-get install libcec-rpi
+
+CEC_CLIENT="cec-client"
+
+# Check if cec-client is installed
+if ! command -v $CEC_CLIENT &> /dev/null; then
+    echo "Error: cec-client not found"
+    echo "Install with: sudo apt-get install libcec-rpi"
+    exit 1
+fi
+
+# Send a CEC command
+send_command() {
+    echo "$1" | $CEC_CLIENT -s -d 1
+}
+
+# Show available commands
+show_help() {
+    cat << EOF
+CEC Control Script for Raspberry Pi 4
+
+Usage: $0 <command> [options]
+
+Commands:
+  tv-on                    Turn on the TV
+  tv-off                   Turn off the TV
+  standby                  Put TV in standby mode
+  wake                     Wake TV from standby
+
+  vol-up                   Increase volume
+  vol-down                 Decrease volume
+  mute                     Mute audio
+
+  input <port>             Switch to HDMI input port (0-15)
+  source <device>          Switch to source device (0-15)
+
+  scan                     Scan for CEC devices
+  status                   Show CEC adapter status
+  info                     Show TV information
+
+  raw <command>            Send raw CEC command (hex)
+
+  help                     Show this help message
+
+Examples:
+  $0 tv-on
+  $0 vol-up
+  $0 input 1
+  $0 raw 4F:82:10:00
+
+EOF
+}
+
+# Command functions
+tv_on() {
+    echo "Turning TV on..."
+    send_command "on 0"
+}
+
+tv_off() {
+    echo "Turning TV off..."
+    send_command "standby 0"
+}
+
+standby() {
+    echo "Putting TV in standby..."
+    send_command "standby 0"
+}
+
+wake() {
+    echo "Waking TV..."
+    send_command "on 0"
+}
+
+vol_up() {
+    echo "Volume up..."
+    send_command "volup"
+}
+
+vol_down() {
+    echo "Volume down..."
+    send_command "voldown"
+}
+
+mute() {
+    echo "Muting..."
+    send_command "mute"
+}
+
+input_switch() {
+    local port=$1
+    if [ -z "$port" ]; then
+        echo "Error: Please specify input port (0-15)"
+        exit 1
+    fi
+    echo "Switching to HDMI input $port..."
+    send_command "tx 1f:82:$(printf '%x' $port):00"
+}
+
+source_switch() {
+    local device=$1
+    if [ -z "$device" ]; then
+        echo "Error: Please specify source device (0-15)"
+        exit 1
+    fi
+    echo "Switching to source device $device..."
+    send_command "tx 1f:82:$(printf '%x' $device):00"
+}
+
+scan_devices() {
+    echo "Scanning for CEC devices..."
+    $CEC_CLIENT -s -d 1 < /dev/null
+}
+
+show_status() {
+    echo "CEC Adapter Status:"
+    $CEC_CLIENT -s -d 1 <<<'q'
+}
+
+show_info() {
+    echo "TV Information:"
+    send_command "poll 0"
+}
+
+raw_command() {
+    local cmd=$1
+    if [ -z "$cmd" ]; then
+        echo "Error: Please specify raw command"
+        exit 1
+    fi
+    echo "Sending raw command: $cmd"
+    send_command "tx $cmd"
+}
+
+# Main script logic
+case "$1" in
+    tv-on)
+        tv_on
+        ;;
+    tv-off)
+        tv_off
+        ;;
+    standby)
+        standby
+        ;;
+    wake)
+        wake
+        ;;
+    vol-up)
+        vol_up
+        ;;
+    vol-down)
+        vol_down
+        ;;
+    mute)
+        mute
+        ;;
+    input)
+        input_switch "$2"
+        ;;
+    source)
+        source_switch "$2"
+        ;;
+    scan)
+        scan_devices
+        ;;
+    status)
+        show_status
+        ;;
+    info)
+        show_info
+        ;;
+    raw)
+        raw_command "$2"
+        ;;
+    help|--help|-h|"")
+        show_help
+        ;;
+    *)
+        echo "Unknown command: $1"
+        echo "Run '$0 help' for usage information"
+        exit 1
+        ;;
+esac