Remove obsolete audio and buzzer control documentation files, including detailed guides and HTML interfaces, to streamline the repository and eliminate redundancy. This cleanup enhances maintainability and focuses on essential resources for the reTerminal DM4 audio and buzzer functionalities.
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nearxos
266
archive/chromium-setup-legacy/flask_buzzer_app.py
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266
archive/chromium-setup-legacy/flask_buzzer_app.py
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#!/usr/bin/env python3
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"""
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Flask Buzzer Control Application for reTerminal DM4
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Provides REST API for controlling the built-in buzzer
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"""
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from flask import Flask, jsonify, request
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import subprocess
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import time
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import threading
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app = Flask(__name__)
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BUZZER_PATH = '/sys/class/leds/usr-buzzer/brightness'
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class BuzzerController:
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"""Buzzer controller class with pattern support"""
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def __init__(self):
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self.is_playing = False
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self.play_thread = None
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def _write_buzzer(self, value):
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"""Internal method to write to buzzer"""
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try:
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subprocess.run(['sudo', 'tee', BUZZER_PATH],
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input=str(value), text=True,
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stdout=subprocess.DEVNULL,
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stderr=subprocess.DEVNULL,
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check=True)
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return True
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except subprocess.CalledProcessError:
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return False
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def on(self):
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"""Turn buzzer ON"""
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return self._write_buzzer(1)
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def off(self):
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"""Turn buzzer OFF"""
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return self._write_buzzer(0)
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def beep(self, duration=0.2):
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"""Play a single beep"""
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self.on()
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time.sleep(duration)
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self.off()
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def play_pattern(self, pattern):
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"""
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Play a pattern
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pattern: list of tuples [(duration_on, duration_off), ...]
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Example: [(0.1, 0.1), (0.1, 0.1), (0.1, 0.3)] = two short beeps, pause, one beep
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"""
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if self.is_playing:
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return False
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def _play():
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self.is_playing = True
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for on_time, off_time in pattern:
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self.on()
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time.sleep(on_time)
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self.off()
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time.sleep(off_time)
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self.is_playing = False
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self.play_thread = threading.Thread(target=_play, daemon=True)
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self.play_thread.start()
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return True
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def starwars_theme(self, duration=5):
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"""Play Star Wars theme pattern"""
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if self.is_playing:
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return False
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def _play():
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self.is_playing = True
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start_time = time.time()
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# Opening sequence
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self.beep(0.05)
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time.sleep(0.05)
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self.beep(0.05)
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time.sleep(0.05)
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self.beep(0.05)
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time.sleep(0.1)
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self.beep(0.1)
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time.sleep(0.1)
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self.beep(0.15)
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time.sleep(0.15)
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# Continue pattern until duration reached
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while time.time() - start_time < duration:
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self.beep(0.08)
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time.sleep(0.05)
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self.beep(0.08)
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time.sleep(0.05)
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self.beep(0.08)
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time.sleep(0.1)
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self.beep(0.12)
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time.sleep(0.1)
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self.off()
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self.is_playing = False
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self.play_thread = threading.Thread(target=_play, daemon=True)
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self.play_thread.start()
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return True
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# Create global buzzer controller
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buzzer = BuzzerController()
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@app.route('/')
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def index():
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"""API documentation endpoint"""
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return jsonify({
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'status': 'Buzzer Control API',
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'version': '1.0',
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'endpoints': {
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'/buzzer/on': {
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'method': 'POST, GET',
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'description': 'Turn buzzer ON'
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},
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'/buzzer/off': {
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'method': 'POST, GET',
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'description': 'Turn buzzer OFF'
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},
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'/buzzer/beep': {
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'method': 'GET',
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'description': 'Play a beep',
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'parameters': {'duration': 'float (0-5 seconds)'}
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},
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'/buzzer/pattern': {
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'method': 'POST',
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'description': 'Play custom pattern',
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'body': {'pattern': '[[on_time, off_time], ...]'}
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},
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'/buzzer/starwars': {
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'method': 'GET',
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'description': 'Play Star Wars theme',
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'parameters': {'duration': 'float (0-10 seconds)'}
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},
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'/buzzer/status': {
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'method': 'GET',
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'description': 'Get buzzer status'
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}
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}
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})
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@app.route('/buzzer/on', methods=['POST', 'GET'])
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def turn_on():
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"""Turn buzzer ON"""
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if buzzer.on():
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return jsonify({'status': 'success', 'message': 'Buzzer turned ON'})
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return jsonify({'status': 'error', 'message': 'Failed to turn buzzer ON'}), 500
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@app.route('/buzzer/off', methods=['POST', 'GET'])
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def turn_off():
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"""Turn buzzer OFF"""
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if buzzer.off():
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return jsonify({'status': 'success', 'message': 'Buzzer turned OFF'})
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return jsonify({'status': 'error', 'message': 'Failed to turn buzzer OFF'}), 500
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@app.route('/buzzer/beep', methods=['POST', 'GET'])
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def beep():
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"""Play a beep for specified duration"""
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duration = float(request.args.get('duration', 0.2))
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if duration < 0 or duration > 5:
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return jsonify({
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'status': 'error',
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'message': 'Duration must be between 0 and 5 seconds'
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}), 400
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buzzer.beep(duration)
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return jsonify({
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'status': 'success',
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'message': f'Beeped for {duration} seconds'
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})
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@app.route('/buzzer/pattern', methods=['POST'])
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def play_pattern():
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"""Play a custom pattern"""
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data = request.get_json()
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if not data or 'pattern' not in data:
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return jsonify({
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'status': 'error',
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'message': 'Pattern required in JSON body'
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}), 400
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pattern = data['pattern']
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if not isinstance(pattern, list):
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return jsonify({
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'status': 'error',
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'message': 'Pattern must be a list'
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}), 400
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# Validate pattern format
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try:
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validated_pattern = []
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for item in pattern:
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if isinstance(item, list) and len(item) == 2:
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validated_pattern.append((float(item[0]), float(item[1])))
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else:
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return jsonify({
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'status': 'error',
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'message': 'Each pattern item must be [on_time, off_time]'
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}), 400
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except (ValueError, TypeError) as e:
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return jsonify({
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'status': 'error',
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'message': f'Invalid pattern format: {str(e)}'
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}), 400
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if buzzer.play_pattern(validated_pattern):
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return jsonify({
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'status': 'success',
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'message': 'Pattern playing'
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})
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return jsonify({
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'status': 'error',
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'message': 'Buzzer is already playing'
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}), 409
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@app.route('/buzzer/starwars', methods=['GET'])
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def starwars():
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"""Play Star Wars theme"""
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duration = float(request.args.get('duration', 5))
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if duration < 0 or duration > 10:
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return jsonify({
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'status': 'error',
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'message': 'Duration must be between 0 and 10 seconds'
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}), 400
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if buzzer.starwars_theme(duration):
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return jsonify({
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'status': 'success',
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'message': f'Playing Star Wars theme for {duration} seconds'
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})
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return jsonify({
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'status': 'error',
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'message': 'Buzzer is already playing'
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}), 409
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@app.route('/buzzer/status', methods=['GET'])
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def status():
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"""Get buzzer status"""
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try:
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result = subprocess.run(['cat', BUZZER_PATH],
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capture_output=True, text=True, check=True)
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state = result.stdout.strip()
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return jsonify({
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'status': 'success',
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'buzzer': 'ON' if state == '1' else 'OFF',
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'state': state,
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'is_playing': buzzer.is_playing
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})
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except Exception as e:
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return jsonify({
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'status': 'error',
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'message': str(e)
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}), 500
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if __name__ == '__main__':
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print("Starting Buzzer Control API...")
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print("API available at http://0.0.0.0:5000")
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print("Documentation at http://0.0.0.0:5000/")
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app.run(host='0.0.0.0', port=5000, debug=True)
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