kopia lustrzana https://github.com/jamesgao/kiln_controller
Only display temperature above 50 C
James Gao
rodzic
d1f5faef36
commit
7d72bfb803
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@ -172,13 +172,17 @@ class AlphaScroller(threading.Thread):
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def __init__(self, address=0x70, interval=.25):
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self.interval = interval
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self.disp = Alphanumeric(address)
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self.text = [(' ',)]*4
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self.text = ''
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self.counter = 0
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self.pause = threading.Event()
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self.pause.set()
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self.shown = True
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super(AlphaScroller, self).__init__()
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self.running = True
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def stop(self):
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self.pause.set()
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self.running = False
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def set_text(self, text, pad=True, reset=True):
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@ -200,6 +204,19 @@ class AlphaScroller(threading.Thread):
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def set_speed(self, interval):
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self.interval = interval
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def show(self):
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self.pause.set()
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self.shown = True
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def hide(self):
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self.pause.clear()
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self.clear()
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self.shown = False
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def clear(self):
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for i in range(4):
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self.disp.writeChar(i, ' ')
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def run(self):
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while self.running:
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@ -213,8 +230,8 @@ class AlphaScroller(threading.Thread):
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self.disp.writeChar(i, *char)
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time.sleep(self.interval)
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self.counter += 1
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for i in range(4):
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self.disp.writeChar(i, ' ')
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self.pause.wait()
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self.clear()
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if __name__ == "__main__":
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scroller = AlphaScroller(interval=.4)
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@ -2,33 +2,18 @@ import time
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import tornado.ioloop
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import tornado.web
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device_file = "/sys/bus/w1/devices/3b-000000182b57/w1_slave"
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def read_temp_raw():
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f = open(device_file, 'r')
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lines = f.readlines()
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f.close()
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return lines
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def read_temp():
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lines = read_temp_raw()
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while lines[0].strip()[-3:] != 'YES':
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time.sleep(0.2)
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lines = read_temp_raw()
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equals_pos = lines[1].find('t=')
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if equals_pos != -1:
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temp_string = lines[1][equals_pos+2:]
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temp_c = float(temp_string) / 1000.0
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temp_f = temp_c * 9.0 / 5.0 + 32.0
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return temp_c, temp_f
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class MainHandler(tornado.web.RequestHandler):
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def initialize(self, monitor):
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self.monitor = monitor
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def get(self):
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self.write("<!doctype html><head><meta http-equiv='refresh' content='5' ></head><p>Current temperature: %.2f°C, %.2f°F"%read_temp())
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application = tornado.web.Application([
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(r"/", MainHandler),
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])
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if __name__ == "__main__":
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application = tornado.web.Application([
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(r"/", MainHandler, dict(monitor=mon)),
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])
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application.listen(8888)
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tornado.ioloop.IOLoop.instance().start()
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@ -1,9 +1,12 @@
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import time
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import re
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import threading
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import time
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import datetime
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import logging
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import threading
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from collections import deque
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logger = logging.getLogger("thermo")
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def temp_to_cone(temp):
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"""Convert the current temperature to cone value using linear interpolation"""
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cones = [600,614,635,683,717,747,792,804,838,852,884,894,900,923,955,984,999,1046,1060,1101,1120,1137,1154,1162,1168,1186,1196,1222,1240,1263,1280,1305,1315,1326,1346]
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@ -20,9 +23,15 @@ class Monitor(threading.Thread):
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self.device = "/sys/bus/w1/devices/%s/w1_slave"%name
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self.history = deque(maxlen=1024)
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from Adafruit_alphanumeric import AlphaScroller
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self.display = AlphaScroller(interval=.4)
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self.display.start()
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try:
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from Adafruit_alphanumeric import AlphaScroller
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self.display = AlphaScroller(interval=.4)
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self.display.start()
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self.display.hide()
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except ImportError:
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logger.info("Could not start AlphaScroller")
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self.display = None
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super(Monitor, self).__init__()
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self.running = True
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@ -41,7 +50,8 @@ class Monitor(threading.Thread):
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def stop(self):
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self.running = False
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self.display.stop()
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if self.display is not None:
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self.display.stop()
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@property
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def temperature(self):
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@ -53,13 +63,17 @@ class Monitor(threading.Thread):
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fahr = temp * 9. / 5. + 32.
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now = datetime.datetime.now()
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self.history.append((now, temp))
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text = list('%0.0f'%temp) + ['degree'] + list('C %0.0f'%fahr)+['degree'] + list("F")
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if 600 <= temp:
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text += [' ', ' ', 'cone']+list("%0.1f"%temp_to_cone(temp))
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self.display.set_text(text, reset=False)
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if self.display is not None:
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if temp > 50:
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if not self.display.shown:
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self.display.show()
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text = list('%0.0f'%temp) + ['degree'] + list('C %0.0f'%fahr)+['degree'] + list("F")
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if 600 <= temp:
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text += [' ', ' ', 'cone']+list("%0.1f"%temp_to_cone(temp))
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self.display.set_text(text, reset=False)
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elif self.display.shown:
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self.display.hide()
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if __name__ == "__main__":
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mon = Monitor()
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