craftbeerpi4-pione/cbpi/extension/onewire/__init__.py

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# -*- coding: utf-8 -*-
import asyncio
import random
import re
import random
from aiohttp import web
from cbpi.api import *
import os, re, threading, time
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from subprocess import call
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import random
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def getSensors():
try:
arr = []
for dirname in os.listdir('/sys/bus/w1/devices'):
if (dirname.startswith("28") or dirname.startswith("10")):
arr.append(dirname)
return arr
except:
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return []
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class ReadThread (threading.Thread):
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value = 0
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def __init__(self, sensor_name):
threading.Thread.__init__(self)
self.value = 0
self.sensor_name = sensor_name
self.runnig = True
def shutdown(self):
pass
def stop(self):
self.runnig = False
def run(self):
while self.runnig:
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try:
if self.sensor_name is None:
return
with open('/sys/bus/w1/devices/w1_bus_master1/%s/w1_slave' % self.sensor_name, 'r') as content_file:
content = content_file.read()
if (content.split('\n')[0].split(' ')[11] == "YES"):
temp = float(content.split("=")[-1]) / 1000 # temp in Celcius
self.value = temp
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except:
pass
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time.sleep(1)
@parameters([Property.Select(label="Sensor", options=getSensors()),
Property.Number(label="offset",configurable = True, default_value = 0, description="Sensor Offset (Default is 0)"),
Property.Select(label="Interval", options=[1,5,10,30,60], description="Interval in Seconds")])
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class OneWire(CBPiSensor):
def __init__(self, cbpi, id, props):
super(OneWire, self).__init__(cbpi, id, props)
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self.value = 200
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async def start(self):
await super().start()
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self.name = self.props.get("Sensor")
self.interval = self.props.get("Interval", 60)
self.offset = float(self.props.get("offset",0))
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self.t = ReadThread(self.name)
self.t.daemon = True
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def shudown():
shudown.cb.shutdown()
shudown.cb = self.t
self.t.start()
async def stop(self):
try:
self.t.stop()
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self.running = False
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except:
pass
async def run(self):
while self.running == True:
self.TEMP_UNIT=self.get_config_value("TEMP_UNIT", "C")
if self.TEMP_UNIT == "C": # Report temp in C if nothing else is selected in settings
self.value = round((self.t.value + self.offset),2)
else: # Report temp in F if unit selected in settings
self.value = round((9.0 / 5.0 * self.t.value + 32 + self.offset), 2)
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self.log_data(self.value)
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self.push_update(self.value)
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await asyncio.sleep(self.interval)
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def get_state(self):
return dict(value=self.value)
def setup(cbpi):
cbpi.plugin.register("OneWire", OneWire)
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try:
# Global Init
call(["modprobe", "w1-gpio"])
call(["modprobe", "w1-therm"])
except Exception as e:
pass