48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
import serial
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import time
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from PySide6.QtCore import QObject, Slot, QTimer
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from .profile_handler import ProfileHandler
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class Load(QObject):
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dev: serial.Serial
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_error: bool
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_current: float
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_timer: QTimer
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_profile_handler: ProfileHandler
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def __init__(self, uart_path: str, profile_handler: ProfileHandler):
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super().__init__(None)
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self.dev = serial.Serial(uart_path, 115200)
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self._error = False
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self._current = 0
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self._profile_handler = profile_handler
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self._profile_handler.currentChanged.connect(self._update_current)
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self._timer = QTimer()
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self._timer.timeout.connect(self._update_load)
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self._timer.start(100)
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def set_error(self, error):
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self._error = error
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@Slot()
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def _update_current(self, current):
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self._current = current
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def _update_load(self):
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current = 0 if self._error else self._current
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curr_quants = round(current / 0.1)
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assert curr_quants <= 0xFFFF
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msb = curr_quants >> 8
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lsb = curr_quants & 0xFF
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self.dev.write(bytes((msb, lsb)))
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r = self.dev.read_all()
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read_bytes = 0 if r is None else len(r)
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print(f"Read {read_bytes} bytes from load controller")
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