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from datetime import datetime, timedelta
import time
import RPi.GPIO as GPIO
import threading
import events
BUTTON_GPIO = 25
REST_TIME = 0.3 # seconds
DIAL_RESET_TIME = 5 # seconds
class DialThread(threading.Thread):
def __init__(self, queue):
threading.Thread.__init__(self, args=(), kwargs=None)
self.queue = queue
self.daemon = True
GPIO.setmode(GPIO.BCM)
GPIO.setup(BUTTON_GPIO, GPIO.IN, pull_up_down=GPIO.PUD_UP)
def run(self):
pressed = True
rest_start = datetime.now()
count = 0
printed = True
while True:
# button is pressed when pin is LOW
if not GPIO.input(BUTTON_GPIO):
if not pressed:
count+=1
pressed = True
printed = False
# button not pressed (or released)
else:
if pressed:
rest_start = datetime.now()
pressed = False
if self.dial_over(rest_start) and not printed:
self.queue.put(count % 10) # wrap 10 to 0
count = 0
printed = True
time.sleep(0.01)
def dial_over(self, rest_start):
# After REST_TIME seconds, assume the rotary dial stopped spinning
return datetime.now() - rest_start > timedelta(seconds=REST_TIME)
class DialManager:
def __init__(self, phone_held, phone_hung_up):
self.sequence = []
self.update = datetime.now()
self._load_sequences(phone_held, phone_hung_up)
def _load_sequences(self, phone_held, phone_hung_up):
self.sequences = {
0: events.OperatorEvent(self, phone_held, phone_hung_up),
1: events.WeatherEvent(self, phone_held, phone_hung_up),
2: events.TimerEvent(self, phone_held, phone_hung_up),
4: {1: {1: events.DirectoryEvent(self, phone_held, phone_hung_up)}},
7: events.FortuneEvent(self, phone_held, phone_hung_up),
}
print(self.sequences)
def dial(self, number):
if datetime.now() - self.update > timedelta(seconds=DIAL_RESET_TIME):
self.sequence = []
self.sequence.append(number)
match = self.match_sequence()
print(self.sequence, match, sep="\t")
if match is not None:
self.sequence = []
self.update = datetime.now()
return match
def match_sequence(self):
def recursive_find(sequence, sequences):
if not sequence:
return None
digit = sequence[0]
if not digit in sequences:
return None
if isinstance(sequences[digit], dict):
return recursive_find(sequence[1:], sequences[digit])
return sequences[digit]
return recursive_find(self.sequence, self.sequences)
def clear_sequence(self):
self.sequence = []
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