mirror of
https://github.com/cjfranko/NTP-Timeturner.git
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Update timeturner.py
This commit is contained in:
Chris Frankland-Wright
GitHub
parent
21b24cfff0
commit
6bceabd1a3
1 changed files with 147 additions and 173 deletions
308
timeturner.py
308
timeturner.py
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@ -1,217 +1,191 @@
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import serial
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import curses
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import time
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import datetime
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import curses
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import re
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import subprocess
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import os
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import threading
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import queue
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import json
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from threading import Thread, Lock
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from collections import deque
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SERIAL_PORT = None
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# Config
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CONFIG_FILE = "config.json"
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DEFAULT_CONFIG = {
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"serial_port": "auto",
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"hardware_offset_ms": 0
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}
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# Globals
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SERIAL_PORT = "/dev/ttyUSB0"
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BAUD_RATE = 115200
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FRAME_RATE = 25.0
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CONFIG_PATH = "config.json"
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sync_pending = False
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ltc_data_queue = queue.Queue()
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latest_ltc = None
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offset_history = deque(maxlen=20)
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lock_total = 0
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free_total = 0
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hardware_offset_ms = 0
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ltc_locked = False
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lock_stable_since = None
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sync_enabled = False
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def load_config():
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global hardware_offset_ms
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# Shared data
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latest_line = None
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latest_timestamp = None
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line_lock = Lock()
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# Rolling jitter calculation
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jitter_samples = deque(maxlen=25)
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last_jitter_update = time.time()
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displayed_jitter_ms = None
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displayed_jitter_frames = None
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# Load config
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if os.path.exists(CONFIG_FILE):
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with open(CONFIG_FILE) as f:
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try:
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with open(CONFIG_PATH, "r") as f:
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config = json.load(f)
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hardware_offset_ms = int(config.get("hardware_offset_ms", 0))
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except Exception:
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hardware_offset_ms = 0
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SERIAL_PORT = config.get("serial_port", SERIAL_PORT)
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hardware_offset_ms = config.get("hardware_offset_ms", 0)
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except json.JSONDecodeError:
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print("⚠️ Failed to parse config.json. Using defaults.")
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else:
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config = DEFAULT_CONFIG
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def find_teensy_serial():
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for dev in os.listdir('/dev'):
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if dev.startswith('ttyACM') or dev.startswith('ttyUSB'):
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return f'/dev/{dev}'
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return None
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def auto_detect_serial_port():
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for dev in os.listdir("/dev"):
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if dev.startswith("ttyACM") or dev.startswith("ttyUSB"):
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return f"/dev/{dev}"
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return SERIAL_PORT
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def parse_ltc_line(line):
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match = re.match(r"\[(LOCK|FREE)\]\s+(\d{2}):(\d{2}):(\d{2})[:;](\d{2})\s+\|\s+([\d.]+)fps", line)
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if not match:
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return None
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status, hh, mm, ss, ff, fps = match.groups()
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return {
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"status": status,
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"hours": int(hh),
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"minutes": int(mm),
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"seconds": int(ss),
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"frames": int(ff),
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"frame_rate": float(fps)
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"lock": match.group(1),
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"hours": int(match.group(2)),
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"minutes": int(match.group(3)),
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"seconds": int(match.group(4)),
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"frames": int(match.group(5)),
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"fps": float(match.group(6))
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}
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def serial_thread(port, baud, q):
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try:
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def serial_reader(port, baud):
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global latest_line, latest_timestamp
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ser = serial.Serial(port, baud, timeout=1)
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while True:
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line = ser.readline().decode(errors='ignore').strip()
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timestamp = datetime.datetime.now()
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parsed = parse_ltc_line(line)
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if parsed:
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q.put((parsed, timestamp))
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except Exception as e:
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print(f"Serial thread error: {e}")
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def get_system_time():
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return datetime.datetime.now()
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def format_time(dt):
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return dt.strftime("%H:%M:%S.%f")[:-3]
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if line:
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with line_lock:
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latest_line = line
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latest_timestamp = datetime.datetime.now()
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def run_curses(stdscr):
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global FRAME_RATE, sync_pending, SERIAL_PORT, latest_ltc
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global offset_history, lock_total, free_total
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global ltc_locked, lock_stable_since, sync_enabled
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global displayed_jitter_ms, displayed_jitter_frames, last_jitter_update
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curses.curs_set(0)
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stdscr.nodelay(True)
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stdscr.timeout(50)
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stdscr.timeout(100)
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load_config()
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SERIAL_PORT = find_teensy_serial()
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if not SERIAL_PORT:
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stdscr.addstr(0, 0, "❌ No serial device found.")
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serial_port = auto_detect_serial_port()
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stdscr.addstr(1, 2, f"NTP Timeturner v1.3")
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stdscr.addstr(2, 2, f"Using Serial Port: {serial_port}")
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stdscr.refresh()
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time.sleep(2)
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return
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thread = threading.Thread(target=serial_thread, args=(SERIAL_PORT, BAUD_RATE, ltc_data_queue), daemon=True)
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thread.start()
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reader_thread = Thread(target=serial_reader, args=(serial_port, BAUD_RATE), daemon=True)
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reader_thread.start()
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lock_count = 0
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free_count = 0
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last_displayed_frame = ""
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sync_allowed = False
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last_frame = None
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while True:
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try:
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while not ltc_data_queue.empty():
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parsed, arrival_time = ltc_data_queue.get_nowait()
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latest_ltc = (parsed, arrival_time)
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now = datetime.datetime.now()
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with line_lock:
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line = latest_line
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timestamp = latest_timestamp
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FRAME_RATE = parsed["frame_rate"]
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status = parsed["status"]
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if status == "LOCK":
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lock_total += 1
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if not ltc_locked:
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lock_stable_since = time.time()
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ltc_locked = True
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elif time.time() - lock_stable_since > 1.0:
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sync_enabled = True
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else:
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free_total += 1
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ltc_locked = False
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sync_enabled = False
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lock_stable_since = None
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offset_history.clear()
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if ltc_locked and sync_enabled:
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offset_ms = (get_system_time() - arrival_time).total_seconds() * 1000 - hardware_offset_ms
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offset_frames = offset_ms / (1000 / FRAME_RATE)
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offset_history.append((offset_ms, offset_frames))
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if sync_pending and ltc_locked and sync_enabled:
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do_sync(stdscr, parsed, arrival_time)
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sync_pending = False
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parsed = parse_ltc_line(line) if line else None
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stdscr.erase()
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stdscr.addstr(0, 2, "NTP Timeturner v1.2")
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stdscr.addstr(1, 2, f"Using Serial Port: {SERIAL_PORT}")
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stdscr.addstr(1, 2, f"NTP Timeturner v1.3")
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stdscr.addstr(2, 2, f"Using Serial Port: {serial_port}")
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if latest_ltc:
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parsed, arrival_time = latest_ltc
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stdscr.addstr(3, 2, f"LTC Status : {parsed['status']}")
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stdscr.addstr(4, 2, f"LTC Timecode : {parsed['hours']:02}:{parsed['minutes']:02}:{parsed['seconds']:02}:{parsed['frames']:02}")
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stdscr.addstr(5, 2, f"Frame Rate : {FRAME_RATE:.2f}fps")
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stdscr.addstr(6, 2, f"System Clock : {format_time(get_system_time())}")
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if ltc_locked and sync_enabled and offset_history:
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avg_ms = sum(x[0] for x in offset_history) / len(offset_history)
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avg_frames = sum(x[1] for x in offset_history) / len(offset_history)
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if abs(avg_ms) < 10:
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color = curses.color_pair(2)
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elif abs(avg_ms) < 40:
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color = curses.color_pair(3)
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if parsed:
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lock_state = parsed["lock"]
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if lock_state == "LOCK":
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lock_count += 1
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else:
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color = curses.color_pair(1)
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free_count += 1
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stdscr.attron(color)
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stdscr.addstr(7, 2, f"Sync Offset : {avg_ms:+.0f} ms ({avg_frames:+.0f} frames)")
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stdscr.attroff(color)
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elif parsed["status"] == "FREE":
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stdscr.attron(curses.color_pair(3))
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stdscr.addstr(7, 2, "⚠️ LTC UNSYNCED — offset unavailable")
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stdscr.attroff(curses.color_pair(3))
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else:
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stdscr.addstr(7, 2, "Sync Offset : …")
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stdscr.addstr(4, 2, f"LTC Status : {lock_state}", curses.color_pair(2 if lock_state == "LOCK" else 3))
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total = lock_total + free_total
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lock_pct = (lock_total / total) * 100 if total else 0
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if ltc_locked and sync_enabled:
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stdscr.addstr(8, 2, f"Lock Ratio : {lock_pct:.1f}% LOCK")
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else:
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stdscr.attron(curses.color_pair(3))
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stdscr.addstr(8, 2, f"Lock Ratio : {lock_pct:.1f}% (not stable)")
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stdscr.attroff(curses.color_pair(3))
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else:
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stdscr.addstr(3, 2, "LTC Status : (waiting)")
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stdscr.addstr(4, 2, "LTC Timecode : …")
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stdscr.addstr(5, 2, "Frame Rate : …")
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stdscr.addstr(6, 2, f"System Clock : {format_time(get_system_time())}")
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stdscr.addstr(7, 2, "Sync Offset : …")
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stdscr.addstr(8, 2, "Lock Ratio : …")
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timecode_str = f"{parsed['hours']:02}:{parsed['minutes']:02}:{parsed['seconds']:02}:{parsed['frames']:02}"
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stdscr.addstr(5, 2, f"LTC Timecode : {timecode_str}")
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stdscr.addstr(6, 2, f"Frame Rate : {parsed['fps']:.2f}fps")
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if sync_enabled:
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stdscr.addstr(10, 2, "[S] Set system clock to LTC [Ctrl+C] Quit")
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else:
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stdscr.addstr(10, 2, "(Sync disabled — LTC not locked) [Ctrl+C] Quit")
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stdscr.refresh()
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key = stdscr.getch()
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if key in (ord('s'), ord('S')) and latest_ltc and sync_enabled:
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sync_pending = True
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except KeyboardInterrupt:
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break
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except Exception as e:
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stdscr.addstr(13, 2, f"⚠️ Error: {e}")
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stdscr.refresh()
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time.sleep(1)
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def do_sync(stdscr, parsed, arrival_time):
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try:
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ms = int((parsed["frames"] / parsed["frame_rate"]) * 1000)
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sync_time = arrival_time.replace(
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# Approximate LTC timecode as a datetime
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ltc_time = timestamp.replace(
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hour=parsed["hours"],
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minute=parsed["minutes"],
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second=parsed["seconds"],
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microsecond=(ms + hardware_offset_ms) * 1000
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microsecond=int((parsed["frames"] / parsed["fps"]) * 1_000_000)
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)
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timestamp = sync_time.strftime("%H:%M:%S.%f")[:-3]
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subprocess.run(["sudo", "date", "-s", timestamp], check=True)
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stdscr.addstr(13, 2, f"✔️ Synced to LTC: {timestamp}")
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except Exception as e:
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stdscr.addstr(13, 2, f"❌ Sync failed: {e}")
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# Show system clock
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system_time = datetime.datetime.now()
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stdscr.addstr(7, 2, f"System Clock : {system_time.strftime('%H:%M:%S.%f')[:-3]}")
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# Only calculate jitter if LOCKED
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if lock_state == "LOCK":
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offset_ms = (system_time - ltc_time).total_seconds() * 1000 - hardware_offset_ms
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jitter_samples.append(offset_ms)
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if time.time() - last_jitter_update >= 1.0:
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avg_offset = sum(jitter_samples) / len(jitter_samples)
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displayed_jitter_ms = avg_offset
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frame_error = round((avg_offset / 1000) * parsed["fps"])
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displayed_jitter_frames = frame_error
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last_jitter_update = time.time()
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if displayed_jitter_ms is not None:
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stdscr.addstr(8, 2, f"Sync Jitter : {displayed_jitter_ms:+.0f} ms ({displayed_jitter_frames:+} frames)",
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curses.color_pair(0 if abs(displayed_jitter_ms) < 5 else 3))
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# Compare timecode match
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ltc_str = ltc_time.strftime('%H:%M:%S')
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sys_str = system_time.strftime('%H:%M:%S')
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if ltc_str == sys_str and parsed["frames"] == int((system_time.microsecond / 1_000_000) * parsed["fps"]):
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stdscr.addstr(9, 2, "Timecode Match: MATCHED", curses.color_pair(2))
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else:
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stdscr.addstr(9, 2, "Timecode Match: OUT OF SYNC", curses.color_pair(3))
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sync_allowed = True
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else:
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stdscr.addstr(8, 2, f"Sync Jitter : -- (FREE mode)", curses.color_pair(3))
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stdscr.addstr(9, 2, f"Timecode Match: UNKNOWN", curses.color_pair(3))
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sync_allowed = False
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total = lock_count + free_count
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if total > 0:
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lock_ratio = (lock_count / total) * 100
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stdscr.addstr(10, 2, f"Lock Ratio : {lock_ratio:.1f}% LOCK", curses.color_pair(2 if lock_ratio > 90 else 3))
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else:
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stdscr.addstr(4, 2, "Waiting for LTC data...", curses.color_pair(3))
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stdscr.addstr(12, 2, "[S] Set system clock to LTC [Ctrl+C] Quit")
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key = stdscr.getch()
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if key in (ord('s'), ord('S')) and parsed and sync_allowed:
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os.system(f"sudo date -s \"{timecode_str.replace(':', ':')}\"")
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stdscr.refresh()
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time.sleep(0.05)
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def main():
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curses.wrapper(start_curses)
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def start_curses(stdscr):
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curses.start_color()
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curses.init_pair(1, curses.COLOR_WHITE, curses.COLOR_BLACK)
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curses.init_pair(2, curses.COLOR_GREEN, curses.COLOR_BLACK)
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curses.init_pair(3, curses.COLOR_RED, curses.COLOR_BLACK)
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run_curses(stdscr)
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if __name__ == "__main__":
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curses.initscr()
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curses.start_color()
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curses.init_pair(1, curses.COLOR_RED, curses.COLOR_BLACK)
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curses.init_pair(2, curses.COLOR_GREEN, curses.COLOR_BLACK)
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curses.init_pair(3, curses.COLOR_YELLOW, curses.COLOR_BLACK)
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curses.wrapper(run_curses)
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main()
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