raspiで音声アラームをスケジュールに従い起動

アラームをスケジュールで起動する仕組みを考えてみた。

wavplay.py**********************

import os
import sys
import time
import subprocess
import RPi.GPIO as GPIO 
RELAY_PIN = 27

MAX_LINES = 200
def play_wav(wav_file):
    file_path = os.path.join("/home/pi", wav_file)
    if not os.path.isfile(file_path):
        return f"File not found: {file_path}"
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(RELAY_PIN, GPIO.OUT)
    try:
        GPIO.output(RELAY_PIN, GPIO.HIGH)
        time.sleep(0.2)
        proc = subprocess.Popen(["aplay", file_path])
        proc.wait()

        with open("wavlog.txt", "a", newline="") as f:

         writer = csv.writer(f)

         now_str = datetime.now().strftime('%Y-%m-%d %H:%M:%S')

         writer.writerow([now_str, wav_file])

        with open("wavlog.txt", "r") as f:

         lines = f.readlines()

        if len(lines) > MAX_LINES:

          lines = lines[-MAX_LINES:]   # ← 最新2maxlines行だけ残す

          with open("wavlog.txt", "w", newline="") as f:

           f.writelines(lines)

        return f"Played {wav_file}"
    except Exception as e:
        return f"Error: {e}"
    finally:
        GPIO.output(RELAY_PIN, GPIO.LOW)
        GPIO.cleanup(RELAY_PIN)
if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("Usage: python script.py <waveFilename>")
        sys.exit(1)
    filename = sys.argv[1]
    result = play_wav(filename)
    print(result)

crontab -e******************

0 17-19 10 11-12 * /usr/bin/python3 /home/pi/wavplay.py PurchaseKerosene.wav

ちなみに、現在のcrontabの一部

5 6 * * * /home/pi/update-cloudflare-ufw.sh >> /home/pi/tmp/ufw-cron.log 2>&1

*/10  * 13-29 2 * curl -s http://localhost:8080/py/collect >/dev/null

0     8 13-29 2 * curl "http://*.*.*.*/setConfig?setA1=21.5&setA2=21.4&setA3=21.5"

１行目cloudflare関連、２，３行目が苗床ヒーター管理