78 lines
1.3 KiB
Python
78 lines
1.3 KiB
Python
"""MAPID utility library.
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This module contains an utility class to control MAPID/CP using pyserial.
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"""
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import os
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import time
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import dotenv #
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import serial
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DOTENV_LOADED = False
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"""bool: Is .env loaded?
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Prevents loading .env multiple times for speed.
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"""
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def load_dotenv():
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"""Load .env file
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"""
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basedir = os.path.abspath(os.path.dirname(__file__))
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dotenv.load_dotenv(os.path.join(basedir, ".env"))
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global DOTENV_LOADED
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DOTENV_LOADED = True
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def get_serial_dev():
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"""Get SERIAL_DEV setting from dotenv.
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Returns:
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str: The device file.
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"""
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global DOTENV_LOADED
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if not DOTENV_LOADED:
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load_dotenv()
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return os.environ.get("SERIAL_DEV")
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def get_serial_speed():
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"""Get SERIAL_SPEED setting from dotenv.
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Returns:
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int: Serial speed in baud.
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"""
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global DOTENV_LOADED
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if not DOTENV_LOADED:
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load_dotenv()
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return os.environ.get("SERIAL_SPEED")
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class MAPIDCP:
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arduino = None
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def __init__(self):
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self.arduino = serial.Serial(port=get_serial_dev(), baudrate=get_serial_speed(), timeout=.1)
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def _cmd(self, cmd: str):
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self.arduino.write(bytes(cmd + "\r\n", "utf8"))
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time.sleep(0.1)
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def cls(self):
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self._cmd("CLS")
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def led(self, state: bool):
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if state:
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self._cmd("ON")
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else:
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self._cmd("OFF")
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def line(self, line_no: int):
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self._cmd("LINE " + str(line_no))
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def echo(self, text: str):
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self._cmd("ECHO " + text)
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