105 lines
2.5 KiB
Python
105 lines
2.5 KiB
Python
import signal
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import sys
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import time
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from datetime import datetime
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import subprocess
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from slovak_datetime_formatter import get_datetime_as_slovak_sentence
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if len(sys.argv) > 1 and sys.argv[1] == "test":
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import dummygpio as GPIO
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else:
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import RPi.GPIO as GPIO
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BUTTON_TIMEOUT = (
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30 # button release timeout terminates playing
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)
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PIN = 27 # listen to changes on this GPIO pin
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GPIO.setmode(GPIO.BCM) # use BCM pin layout
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GPIO.setwarnings(False)
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def setup_pin():
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GPIO.setup(PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
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def terminate_playing(proc):
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print("Terminating playing...")
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proc.terminate()
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proc.wait(timeout=5)
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print("Terminated")
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def play_presny_cas():
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print("Playing presny_cas.wav")
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proc = subprocess.Popen(["aplay", "presny_cas.wav"])
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wait_for_button_release_or_timeout(PIN, BUTTON_TIMEOUT)
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print("GPIO went HIGH - terminating playing")
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terminate_playing(proc)
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def play_beep():
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print("Playing beep.wav")
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subprocess.run(["aplay", "beep.wav"], check=True)
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def get_credentials():
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with open("credentials.txt") as f:
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cred_line = f.readline().strip()
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username, password = cred_line.split(":")
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return username, password
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def generate_presny_cas():
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text = get_datetime_as_slovak_sentence(datetime.now())
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print(f"Generating presny_cas.wav for '{text}' using a remote API call")
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username, password = get_credentials()
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subprocess.call(
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[
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"curl", "--silent", "-u", f"{username}:{password}",
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"--get",
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"--data-urlencode", f"text={text}",
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"https://tts.virtonline.eu/api/tts",
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"--output", "presny_cas.wav",
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]
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)
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print("Generated presny_cas.wav")
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def wait_for_button_release_or_timeout(pin, timeout):
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timeout_start = time.time()
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while time.time() < timeout_start + timeout:
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if GPIO.input(pin) == GPIO.HIGH:
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break
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time.sleep(0.05)
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def handle_pin(pin):
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print(f"GPIO {pin} LOW - event triggered")
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generate_presny_cas()
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play_presny_cas()
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def signal_handler(sig, frame):
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print("Interrupt received, cleaning up!")
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GPIO.cleanup()
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sys.exit(0)
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signal.signal(signal.SIGINT, signal_handler)
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try:
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setup_pin()
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play_beep()
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play_beep()
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GPIO.add_event_detect(PIN, GPIO.FALLING, callback=handle_pin, bouncetime=1000)
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print(f"Waiting for the GPIO {PIN} to go LOW...")
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while True:
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time.sleep(0.01)
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except Exception as e:
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print("Caught exception: ", e)
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sys.exit()
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finally:
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GPIO.cleanup()
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