59 lines
1.5 KiB
Python
59 lines
1.5 KiB
Python
import time
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import os
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from datetime import datetime
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try:
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import paho.mqtt.client as mqtt
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import gpiozero
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global GPIO
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import RPi.GPIO as GPIO
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except ImportError:
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print('Some modules are missing. Try to install them with "pip3 install -r requirements.txt"')
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exit()
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GPIO.setmode(GPIO.BCM)
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# setting up ultrasonic pins
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GPIO_TRIGGER = 18
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GPIO_ECHO = 24
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GPIO.setup(GPIO_TRIGGER, GPIO.OUT)
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GPIO.setup(GPIO_ECHO, GPIO.IN)
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def debug_print(message: str):
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now = datetime.now()
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current_time = now.strftime("%H:%M:%S")
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print('[DEBUG]['+current_time+'] '+message)
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def error_print(message: str):
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now = datetime.now()
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current_time = now.strftime("%H:%M:%S")
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print('[ERROR]['+current_time+'] '+message)
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def relay_controller(pin: int, status: str):
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if status == "ON":
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relay = gpiozero.OutputDevice(pin, active_high=False, initial_value=False)
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relay.on()
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elif status == "OFF":
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relay = gpiozero.OutputDevice(pin, active_high=False, initial_value=False)
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relay.off()
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else:
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error_print("Unknown status for relay ("+status+")")
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def get_water_level():
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GPIO.output(GPIO_TRIGGER, True)
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time.sleep(0.00001)
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GPIO.output(GPIO_TRIGGER, False)
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startTime = time.time()
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StopTime = time.time()
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while GPIO.input(GPIO_ECHO) == 0:
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startTime = time.time()
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while GPIO.input(GPIO_ECHO) == 1:
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StopTime = time.time()
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TimeElapsed = StopTime - startTime
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distance = (TimeElapsed * 34300) / 2
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return distance
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