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Uni-Lab-OS/unilabos/devices/sealer/sealer.py
2025-11-15 02:14:45 +08:00

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Python
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import serial, time, re
class SimpleSealer:
"""
It purposely skips CRC/ACK handling and sends raw commands of the form
'**00??[=xxxx]zz!'. Good enough for quick experiments or automation
scripts where robustness is less critical.
Example
-------
>>> sealer = SimpleSealer("COM24")
>>> sealer.set_temperature(160) # 160°C
>>> sealer.set_time(2.0) # 2s
>>> sealer.seal_cycle() # waitheatsealeject
>>> sealer.close()
"""
T_RE = re.compile(r"\*T\d\d:\d\d:\d\d=(\d+),(\d),(\d),")
def __init__(self, port: str, baud: int = 19200, thresh_c: int = 150):
self.port = port
self.baud = baud
self.thresh_c = thresh_c
self.ser = serial.Serial(port, baud, timeout=0.3)
self.ser.reset_input_buffer()
# ---------- lowlevel helpers ----------
def _send(self, raw: str):
"""Write an alreadyformed ASCII command, e.g. '**00DH=0160zz!'."""
self.ser.write(raw.encode())
print(">>>", raw)
def _read_frame(self) -> str:
"""Read one frame (ending at '!') and strip the terminator."""
return self.ser.read_until(b'!').decode(errors='ignore').strip()
# ---------- highlevel commands ----------
def set_temperature(self, celsius: int):
self._send(f"**00DH={celsius:04d}zz!")
def set_time(self, seconds: float):
units = int(round(seconds * 10))
self._send(f"**00DT={units:04d}zz!")
def open_drawer(self):
self._send("**00MOzz!")
def close_drawer(self):
self._send("**00MCzz!")
def seal(self):
self._send("**00GSzz!")
# ---------- waits ----------
def wait_temp(self):
print(f"[Waiting ≥{self.thresh_c}°C]")
while True:
frame = self._read_frame()
if frame.startswith("*T"):
m = self.T_RE.match(frame)
if not m:
continue
temp = int(m.group(1)) / 10
blk = int(m.group(3)) # 1=Ready,4=Converging
print(f"\rTemp={temp:5.1f}°C | Block={blk}", end="")
if temp >= self.thresh_c and blk in (1, 0, 4):
print(" <-- OK")
return
def wait_finish(self):
while True:
frame = self._read_frame()
if frame.startswith("*T"):
parts = frame.split('=')[1].split(',')
status = int(parts[1])
cnt = int(parts[6][: -3] if parts[6].endswith("!") else parts[6])
print(f"\rRemaining {cnt/10:4.1f}s", end="")
if status == 4:
print("\n[Seal Done]")
return
# ---------- convenience helpers ----------
def seal_cycle(self):
"""Full cycle: wait heat, seal, wait finish, eject drawer."""
time.sleep(10)
self.seal()
self.open_drawer()
def close(self):
self.ser.close()
if __name__ == "__main__":
# Quick demo usage (modify COM port and parameters as needed)
sealer = SimpleSealer("COM24")
try:
sealer.set_temperature(160) # °C
sealer.set_time(2.0) # seconds
sealer.seal_cycle()
finally:
sealer.close()