74 lines
1.8 KiB
Python
74 lines
1.8 KiB
Python
import numpy as np
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import serial
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import subprocess
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import time
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s = serial.Serial("/dev/ttyUSB0", 115200, timeout=10)
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q = queue.Queue()
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process = subprocess.Popen(["ssh", "shrooms@threefortiethofonehamster.com", "python", "/home/shrooms/go/src/shroom-server/shroom-pipe.py"], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
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# TODO run thread to process data from process's stdout
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def reset_serial():
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s.close()
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s = serial.Serial("/dev/ttyUSB0", 115200, timeout = 10)
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time.sleep(10)
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class Humidifier:
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def __init__(self):
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self.on = False
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self.history = np.array(30)
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self.switch_timeout = 0
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def update(self, volts):
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self.history[1:] = self.history[:-1]
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self.history[0] = volts
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avg = np.sum(self.history)/self.history.shape[0]
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if self.state:
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if avg < 0.2:
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self.on = False
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else:
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if avg > 2.6:
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self.on = True
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def toggle(self, s):
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if time.time() > self.switch_timeout:
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s.write(b"h")
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self.switch_timeout = time.time() + 7
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humidifier = Humidifier()
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target_lower = 0.85
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target_higher = 0.90
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try:
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last_sample = 0
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while True:
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now = time.time()
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if now - last_sample < 0.5:
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s.write(b"s")
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resp = s.read(120)
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if len(resp) == 0:
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reset_serial()
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time.sleep(5)
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continue
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parts = resp.split(b",")
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humidity = float(parts[0])
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temp = float(parts[1])
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volts = float(parts[2])
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print(humidity, temp, volts)
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humidifier.update(volts)
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if humidity < target_lower and humidifier.off:
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humidifier.toggle(s)
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elif humidity > target_upper and humidifier.on:
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humidifier.toggle(s)
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# TODO check on the process
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else:
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time.sleep(0.5-(now - last_sample))
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finally:
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# TODO kill ssh connection
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process.
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pass
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