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bff6d70b1763995d51d74cd2e0dc875cc061d523
cantarire-etichetare/vendor/syncpulse-scale-bridge/scale_bridge/cli.py
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ske087 bff6d70b17 Initial commit: aplicatie de cantarire si etichetare 
Aplicatie Flask + SQLite pentru productie alimentara: cantarirea
componentelor unui produs finit si tiparirea etichetei prin QZ Tray.

- produse finite (retete) formate din componente cantarite
- designer vizual de etichete (mm/px, zona sigura, campuri variabile,
  cod QR cu continut din mai multe bucati)
- legare produs finit -> sablon de eticheta
- navigare pe doua taburi: Cantarire / Setari
- administrare: componente, produse finite, sabloane, campuri, istoric
- backup, resetare baza de date, checklist de pregatire, /healthz
- CLI de administrare si serviciu systemd pentru productie
- vendor/syncpulse-scale-bridge (GPL-3.0-or-later) pentru citirea cantarului
2026-10-18 23:38:45 +03:00

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# SPDX-License-Identifier: GPL-3.0-or-later
# Copyright (C) 2026 Farshad Zamani — Cloudtart (https://cloudtart.com)
"""
Command line. Without a command the bridge starts and its page opens in the
browser — that is what a double-click on the program does.
SyncPulseScaleBridge run, open http://127.0.0.1:8765/
SyncPulseScaleBridge ports list COM ports
SyncPulseScaleBridge detect [--port COM7] [--thorough] [--save NAME]
SyncPulseScaleBridge monitor --port COM7 [--baud 9600 --framing 8N1 --request "SI\\r\\n" hex]
SyncPulseScaleBridge weight --profile NAME | --port COM7 --protocol mt_sics
SyncPulseScaleBridge token [--new]
SyncPulseScaleBridge firewall [--remove] [--remote-ip 192.168.1.10]
SyncPulseScaleBridge autostart [--disable]
SyncPulseScaleBridge about
Common options: --config FILE, --simulate SPEC (e.g. mahak_mds,toledo_cont:4800:7E1),
--verbose; for running: --listen-host, --listen-port, --no-browser, --service.
"""
from __future__ import annotations
import argparse
import json
import logging
import os
import sys
import time
import urllib.request
from logging.handlers import RotatingFileHandler
from typing import Optional
from . import ABOUT, PRODUCT, SERVICE_ID, __version__, profiles, winutil
from .config import Config
from .detect import Detector
from .protocols import PROTOCOLS, catalogue_info
from .serialio import LineSettings, Registry, format_hex, list_serial_ports, now_ms, open_real, parse_hex, printable
from .simulator import SimulatorBank
log = logging.getLogger("scale_bridge")
LOG_TEXT = {
"port_start": "Searching {port} ...",
"listen": " listening at {baud} {framing}",
"heard": " heard {bytes} bytes at {baud} ({readable_pct}% readable)",
"seven_bit": " 7 data bits with parity? listening again as 7E1/7O1",
"reply": " reply to {protocol}: {text}",
"found": " FOUND {protocol} at {baud} {framing}: {value} {unit}",
"not_found": " nothing recognised on {port}",
"open_failed": " cannot open {port}: {error}",
"press_print": " >>> Press PRINT on the scale now (listening at {baud} for {seconds} s)",
"print_wrong_speed": " data at {baud} was not readable - press PRINT again (next speed)",
"print_timeout": " nothing arrived while waiting for PRINT",
}
def say(text: str = "") -> None:
try:
print(text, flush=True)
except Exception: # noqa: BLE001
try:
sys.stdout.buffer.write((text + "\n").encode("ascii", "replace"))
sys.stdout.flush()
except Exception: # noqa: BLE001
pass
def setup_logging(directory: str, verbose: bool, quiet_console: bool = False) -> None:
fmt = logging.Formatter("%(asctime)s %(levelname)s %(message)s")
handlers: list[logging.Handler] = []
if not quiet_console and sys.stderr is not None:
console = logging.StreamHandler()
console.setFormatter(fmt)
handlers.append(console)
try:
os.makedirs(directory, exist_ok=True)
file_handler = RotatingFileHandler(os.path.join(directory, "bridge.log"), maxBytes=1_000_000,
backupCount=3, encoding="utf-8")
file_handler.setFormatter(fmt)
handlers.append(file_handler)
except OSError:
pass
logging.basicConfig(level=logging.DEBUG if verbose else logging.INFO, handlers=handlers or None,
force=True)
def _opener(args):
if args.simulate:
return SimulatorBank(args.simulate).opener(open_real), SimulatorBank(args.simulate)
return open_real, None
def _ports(args) -> list[dict]:
ports = list_serial_ports()
if args.simulate:
ports += SimulatorBank(args.simulate).ports()
return ports
# ---------------------------------------------------------------------------
# Commands
# ---------------------------------------------------------------------------
def cmd_ports(args) -> int:
ports = _ports(args)
if not ports:
say("No COM ports found. Plug in the USB-serial adapter and check its driver in Device Manager.")
return 1
for p in ports:
chip = f" [{p['chip']}]" if p.get("chip") else ""
say(f"{p['device']:8} {p.get('description') or ''}{chip} ({p.get('kind')})")
if p.get("note"):
say(f" note: {p['note']}")
return 0
def cmd_detect(args, config: Config) -> int:
opener, _ = _opener(args)
ports = args.ports or [p["device"] for p in _ports(args)
if args.bluetooth or p.get("kind") != "bluetooth"]
if not ports:
say("No COM ports to search.")
return 1
def show(code: str, **kw) -> None:
text = LOG_TEXT.get(code)
if text and (args.verbose or code != "listen"):
kw.setdefault("readable_pct", round(float(kw.get("readable") or 0) * 100))
if "protocol" in kw and kw["protocol"] in PROTOCOLS:
kw["protocol"] = PROTOCOLS[kw["protocol"]].name
try:
say(text.format(**kw))
except (KeyError, IndexError):
say(f" {code} {kw}")
say(f"{PRODUCT} {__version__} - auto-detection ({'thorough' if args.thorough else 'quick'}); "
+ ("listen only: nothing is sent." if args.listen_only else "read-only requests only."))
results = Detector(opener, log=show, thorough=args.thorough, print_wait_s=args.wait_print,
listen_only=args.listen_only).run(ports)
say()
found = [r for r in results if r.get("found")]
for r in results:
if r.get("found"):
s = r["serial"]
reading = r["reading"]
fields = reading.get("fields") or {}
if fields:
say(f"{r['port']}: label fields: " + ", ".join(f"{k}={v}" for k, v in fields.items()))
say(f"{r['port']}: {r['protocol_name']} {s['baudrate']} {s['bytesize']}{s['parity']}{s['stopbits']}"
f" request={r['exchange']['request_hex'] or '-'} weight={reading['value']} {reading['unit']}"
f" confidence={int(r['confidence'] * 100)}%")
else:
unknown = r.get("unknown")
extra = f" (readable data at {unknown['baud']} {unknown['framing']}: {unknown['sample_text'][:60]})" \
if unknown else ""
say(f"{r['port']}: no scale recognised{extra}{' - ' + r['error'] if r.get('error') else ''}")
if args.save and found:
for i, r in enumerate(found):
name = args.save if len(found) == 1 else f"{args.save}-{profiles.slug(r['port'])}"
saved = config.save_profile(profiles.from_detection(r, name))
say(f"saved profile '{saved['name']}' in {config.path}")
if args.json:
say(json.dumps(results, indent=2, ensure_ascii=False))
return 0 if found else 1
def cmd_monitor(args) -> int:
opener, _ = _opener(args)
framing = args.framing.upper()
request = parse_hex(args.request or "")
settings = LineSettings(args.port).with_line(args.baud, framing)
say(f"{settings.port} {settings.baudrate} {settings.framing}, "
f"{'request ' + format_hex(request) + ' every ' + str(args.poll) + ' ms' if request else 'listening'}"
f" for {args.seconds} s (Ctrl+C stops)")
ser = opener(settings)
collected = bytearray()
try:
end = time.monotonic() + args.seconds
next_request = 0.0
buf, last = bytearray(), time.monotonic()
while time.monotonic() < end:
now = time.monotonic()
if request and now >= next_request:
ser.write(request)
next_request = now + args.poll / 1000
waiting = ser.in_waiting
chunk = ser.read(waiting if waiting else 1)
if chunk:
buf += chunk
last = time.monotonic()
continue
if buf and time.monotonic() - last > 0.05:
say(f"{format_hex(bytes(buf))} | {printable(bytes(buf))}")
collected += buf
buf.clear()
except KeyboardInterrupt:
pass
finally:
ser.close()
say()
readable = [(pid, p) for pid, p in PROTOCOLS.items() if not pid.startswith("custom")]
for pid, proto in readable:
found = [r for r in proto.readings(bytes(collected)) if r.value is not None]
if found:
say(f"readable as {proto.name}: {found[-1].value} {found[-1].unit} (x{len(found)})")
return 0
def cmd_weight(args, config: Config) -> int:
opener, _ = _opener(args)
if args.profile:
profile = config.profile(args.profile)
if profile is None:
say(f"no profile named {args.profile!r} in {config.path}")
return 1
elif args.port and args.protocol:
serial_cfg = {"baudrate": args.baud}
if args.framing:
f = args.framing.upper()
serial_cfg.update(bytesize=int(f[0]), parity=f[1], stopbits=int(f[2]))
profile = profiles.ad_hoc(args.port, args.protocol, serial_cfg)
else:
say("give --profile NAME, or --port COMx --protocol ID")
return 2
registry = Registry(opener)
try:
worker = registry.worker_for(profiles.line_settings(profile))
result = profiles.wait_for_reading(profile, worker, 1500, int(args.wait * 1000), now_ms)
finally:
registry.stop_all()
say(json.dumps(result, indent=2, ensure_ascii=False))
return 0 if result.get("ok") else 1
def cmd_token(args, config: Config) -> int:
say(config.rotate_token() if args.new else config.token)
return 0
def cmd_firewall(args, config: Config) -> int:
result = winutil.firewall_close() if args.remove else winutil.firewall_open(config.listen_port, args.remote_ip)
say(json.dumps(result, indent=2))
return 0 if result.get("ok") else 1
def cmd_autostart(args, config: Config) -> int:
result = winutil.autostart_disable() if args.disable else winutil.autostart_enable(config.path)
say(json.dumps(result, indent=2))
return 0 if result.get("ok") else 1
def cmd_about() -> int:
for key in ("product", "version", "author", "company", "website", "github", "linkedin",
"repository", "license"):
say(f"{key:11} {ABOUT[key]}")
say(ABOUT["copyright"])
return 0
def cmd_protocols() -> int:
for p in catalogue_info():
tested = " [field-tested]" if p["field_tested"] else ""
say(f"{p['id']:16} {p['kind']:10} {p['request_hex'] or '-':14} {p['name']}{tested}")
return 0
# ---------------------------------------------------------------------------
# Running the bridge
# ---------------------------------------------------------------------------
def _running_copy(port: int) -> Optional[dict]:
try:
with urllib.request.urlopen(f"http://127.0.0.1:{port}/health", timeout=2) as r:
body = json.loads(r.read().decode("utf-8"))
return body if body.get("service") == SERVICE_ID else None
except Exception: # noqa: BLE001
return None
def cmd_run(args, config: Config) -> int:
from .server import Bridge, make_server
host = args.listen_host or config.listen_host
port = int(args.listen_port or config.listen_port)
url = f"http://127.0.0.1:{port}/"
open_page = not (args.no_browser or args.service)
bridge = Bridge(config, simulate=args.simulate or "")
try:
httpd = make_server(bridge, host, port)
except OSError as e:
other = _running_copy(port)
if other:
say(f"{PRODUCT} is already running on this PC (version {other.get('version')}).")
if open_page:
say(f"Opening {url}")
winutil.open_browser(url)
return 0
log.error("cannot listen on %s:%d: %s", host, port, e)
say(f"Port {port} is used by another program. Close it, or start with --listen-port 8766.")
return 1
bar = "=" * 68
say(bar)
say(f" {PRODUCT} {__version__}" + (" [SIMULATION]" if args.simulate else ""))
say(f" {ABOUT['copyright']} - {ABOUT['website']}")
say(f" {ABOUT['license']} - {ABOUT['repository']}")
say(bar)
say(f" Control page (this PC) : {url}")
for ip in winutil.lan_addresses() or ["<this PC's IP address>"]:
say(f" Bridge address : {ip} port {port}")
say(f" Access key : {config.token}")
say(f" Settings : {config.path}")
say(bar)
say(" Keep this window open while the scales are in use; closing it stops the bridge.")
say(" To run in the background at startup, use 'Start with Windows' on the control page.")
say(bar)
log.info("listening on %s:%d", host, port)
if open_page:
winutil.open_browser(url)
try:
httpd.serve_forever(poll_interval=0.5)
except KeyboardInterrupt:
pass
finally:
httpd.server_close()
bridge.registry.stop_all()
return 0
# ---------------------------------------------------------------------------
# Arguments
# ---------------------------------------------------------------------------
def build_parser() -> argparse.ArgumentParser:
common = argparse.ArgumentParser(add_help=False, argument_default=argparse.SUPPRESS)
common.add_argument("--config", help="settings file (default: bridge.json beside the program)")
common.add_argument("--simulate", metavar="SPEC",
help="add simulated scales on COM90.. e.g. 'mahak_mds,toledo_cont:4800:7E1'")
common.add_argument("--verbose", action="store_true", help="more detail in the log")
ap = argparse.ArgumentParser(
prog="SyncPulseScaleBridge",
description=f"{PRODUCT} {__version__} - finds RS-232 scales, reads them and serves the weight "
f"on the network.",
epilog=f"{ABOUT['copyright']} - {ABOUT['website']} - {ABOUT['repository']}")
ap.add_argument("--version", action="version", version=f"{PRODUCT} {__version__}")
ap.add_argument("--config", default=None)
ap.add_argument("--simulate", default="", metavar="SPEC")
ap.add_argument("--verbose", action="store_true")
ap.add_argument("--listen-host", help="address to listen on (default 0.0.0.0)")
ap.add_argument("--listen-port", type=int, help="port to listen on (default 8765)")
ap.add_argument("--no-browser", action="store_true", help="do not open the control page")
ap.add_argument("--service", action="store_true", help="background mode (used by 'Start with Windows')")
sub = ap.add_subparsers(dest="command", metavar="command")
sub.add_parser("run", parents=[common], help="run the bridge (the default)")
sub.add_parser("ports", parents=[common], help="list COM ports")
d = sub.add_parser("detect", parents=[common], help="find the scale automatically")
d.add_argument("--port", dest="ports", action="append", help="only this port (repeatable)")
d.add_argument("--thorough", action="store_true", help="more speeds and framings (slower)")
d.add_argument("--bluetooth", action="store_true", help="also search Bluetooth serial ports")
d.add_argument("--wait-print", type=float, default=0, metavar="SECONDS",
help="the scale sends only on its Print key: wait this long for a press")
d.add_argument("--listen-only", action="store_true",
help="never send anything to the device (skip asking)")
d.add_argument("--save", metavar="NAME", help="save what is found as a profile")
d.add_argument("--json", action="store_true", help="print the full results as JSON")
m = sub.add_parser("monitor", parents=[common], help="show the raw bytes on a port")
m.add_argument("--port", required=True)
m.add_argument("--baud", type=int, default=9600)
m.add_argument("--framing", default="8N1")
m.add_argument("--request", default="", help="hex bytes to send, e.g. '53 49 0D 0A'")
m.add_argument("--poll", type=int, default=500, help="request interval in ms")
m.add_argument("--seconds", type=float, default=10)
w = sub.add_parser("weight", parents=[common], help="read the weight once")
w.add_argument("--profile")
w.add_argument("--port")
w.add_argument("--protocol", choices=sorted(PROTOCOLS))
w.add_argument("--baud", type=int, default=9600)
w.add_argument("--framing", default="")
w.add_argument("--wait", type=float, default=3.0, help="seconds to wait for a reading")
t = sub.add_parser("token", parents=[common], help="show the access key")
t.add_argument("--new", action="store_true", help="make a new key")
f = sub.add_parser("firewall", parents=[common], help="open the bridge port in Windows Firewall")
f.add_argument("--remove", action="store_true")
f.add_argument("--remote-ip", default=None, help="allow only this address")
a = sub.add_parser("autostart", parents=[common], help="start with Windows (scheduled task)")
a.add_argument("--disable", action="store_true")
sub.add_parser("protocols", parents=[common], help="list the protocol library")
sub.add_parser("about", parents=[common], help="author, licence and links")
return ap
def main(argv: Optional[list[str]] = None) -> int:
args = build_parser().parse_args(argv)
command = args.command or "run"
if command == "about":
return cmd_about()
if command == "protocols":
return cmd_protocols()
if command == "ports":
return cmd_ports(args)
if command == "monitor":
return cmd_monitor(args)
config = Config(args.config)
setup_logging(os.path.dirname(config.path), args.verbose,
quiet_console=command != "run" and not args.verbose)
if command == "detect":
return cmd_detect(args, config)
if command == "weight":
return cmd_weight(args, config)
if command == "token":
return cmd_token(args, config)
if command == "firewall":
return cmd_firewall(args, config)
if command == "autostart":
return cmd_autostart(args, config)
return cmd_run(args, config)
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