Myu: raspiでPCのタイマー起動

PCをraspiからタイマー起動、Offできるようにしてみた。

*********gpio_control.py
  
import RPi.GPIO as GPIO
import time
import json
from datetime import datetime, timedelta
import subprocess

IN_PIN = 22
OUT_PIN = 4
SCHEDULE_FILE = "/home/pi/schedule.json"

GPIO.setmode(GPIO.BCM)
GPIO.setup(IN_PIN, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(OUT_PIN, GPIO.OUT, initial=GPIO.LOW)

start_done = False
end_done = False
trigger_active_until = None

PC_IP = "192.168.1.21"   # ←PCのIP

def is_pc_on():
    try:
        result = subprocess.run(
            ["ping", "-c", "1", "-W", "1", PC_IP],
            stdout=subprocess.DEVNULL,
            stderr=subprocess.DEVNULL
        )
        return result.returncode == 0
    except:
        return False

def load_schedule():
    try:
        with open(SCHEDULE_FILE) as f:
            s = json.load(f)
        start = datetime.strptime(s["start"], "%Y-%m-%d %H:%M:%S")
        end   = datetime.strptime(s["end"], "%Y-%m-%d %H:%M:%S")
        return start, end
    except:
        return None, None
  
  
def trigger():
    global trigger_active_until
    GPIO.output(OUT_PIN, GPIO.HIGH)
    trigger_active_until = datetime.now() + timedelta(seconds=1)
    print("Trigger executed")

try:
    while True:
        start, end = load_schedule()
        now = datetime.now()

# ★追加：未来スケジュールならリセット
        if start and now < start:
            start_done = False

if end and now < end:
            end_done = False

# 開始トリガー
        if start and not start_done and start <= now <= start + timedelta(seconds=30):
            print("Start trigger")
            trigger()
            start_done = True
        # 終了トリガー
        if end and not end_done and end <= now <= end + timedelta(seconds=30):
            print("End trigger")
            trigger()
            end_done = True
        # trigger期間中は監視をスキップ
        if trigger_active_until and now < trigger_active_until:
            pass
        else:
            if trigger_active_until:
               GPIO.output(OUT_PIN, GPIO.LOW)
               trigger_active_until = None

# 通常監視
            if GPIO.input(IN_PIN) == GPIO.HIGH:
               GPIO.output(OUT_PIN, GPIO.HIGH)
            else:
               GPIO.output(OUT_PIN, GPIO.LOW)

time.sleep(1)

finally:
    GPIO.cleanup()
                                                               
***********gpio_control.service
                                               
Description=GPIO制御スクリプト
After=network.target

[Service]
ExecStart=/usr/bin/python3 /home/gpio_control.py
WorkingDirectory=/home
StandardOutput=inherit
StandardError=inherit
Restart=always
User=root

[Install]
WantedBy=multi-user.target
                                                               
***********bottle
                                                               #PC on off schedule
SCHEDULE_FILE = "/home/pi/schedule.json"
def load_schedule():
    if not os.path.exists(SCHEDULE_FILE):
        return {}
    with open(SCHEDULE_FILE, "r") as f:
        return json.load(f)
def save_schedule(s):
    tmp = SCHEDULE_FILE + ".tmp"
    with open(tmp, "w") as f:
        json.dump(s, f, indent=2)
    os.replace(tmp, SCHEDULE_FILE)
# 現在のschedule取得
@app.get("/py/schedule")
def get_schedule():
    response.content_type = "application/json"
    return load_schedule()
# schedule設定
@app.post("/py/schedule")
def set_schedule():
    data = request.json
    # 形式チェック＆統一
    start = datetime.strptime(data["start"], "%Y-%m-%d %H:%M:%S")
    end   = datetime.strptime(data["end"], "%Y-%m-%d %H:%M:%S")
    schedule = {
        "start": start.strftime("%Y-%m-%d %H:%M:%S"),
        "end":   end.strftime("%Y-%m-%d %H:%M:%S")
    }
    save_schedule(schedule)
    return {"status": "ok", "schedule": schedule}
@app.get("/py/schedule/edit")
def schedule_edit():

s = load_schedule()

start = s.get("start", "")
    end   = s.get("end", "")

return f"""
    <html>
    <body>
    <h2>スケジュール設定</h2>

開始:<br>
      <input type="datetime-local" name="start" value="{start.replace(' ', 'T') if start else ''}">
      <br><br>

終了:<br>
      <input type="datetime-local" name="end" value="{end.replace(' ', 'T') if end else ''}">
      <br><br>

</form>

</body>
    </html>
    """

@app.post("/py/schedule/edit")
def schedule_edit_post():

start = request.forms.get("start")
    end   = request.forms.get("end")

# datetime-local → json形式へ変換
    start = start.replace("T", " ") + ":00"
    end   = end.replace("T", " ") + ":00"

schedule = {
        "start": start,
        "end": end
    }

save_schedule(schedule)

return """
    <html>
    <body>
    保存しました<br>
    <a href="/py/schedule/edit">戻る</a>
    </body>
    </html>
    """

すでに、22番号Pinをタッチセンサで起動させるようにしていたので、それとの絡みで少し複雑になってしまった。raspiからWeb画面で日時を設定できるようにしてみた。複数セットできると便利かもしれない。

Myu

2026年2月22日日曜日

raspiでPCのタイマー起動

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