General programming discussion • Re: Need help with using a scheduler to activate buttons on a GUI.

Code:

import tkinter as tkimport RPi.GPIO as GPIOimport threadingimport timefrom datetime import datetimeimport queueimport apscheduler.schedulers.backgroundimport logging# Enable detailed logginglogging.basicConfig(level=logging.DEBUG, format='%(message)s')# GPIO SetupGPIO.setmode(GPIO.BCM)GPIO.setwarnings(False)# Define GPIO pinspins = {    "LED Top Shelves": 17,    "LED Bottom Shelves": 18,    "Water Sprayer": 25,    "Fans": 5,    "Water Shelf 1": 27,    "Water Shelf 2": 22,    "Water Shelf 3": 23,    "Water Shelf 4": 24}# Set up GPIO as outputfor pin in pins.values():    GPIO.setup(pin, GPIO.OUT)    GPIO.output(pin, GPIO.HIGH)  # OFF state for relays# Initialize GUIwin = tk.Tk()win.title("Microgreens Farm Controller")win.geometry("800x480")# Default colors for OFF stateDEFAULT_COLORS = {    17: "#ffeb3b",    18: "#ffeb3b",    5: "#FFA500",    25: "#87CEEB",}# Checkbox control variablesshelf_enabled_vars = {pins[f"Water Shelf {i}"]: tk.IntVar() for i in range(1, 5)}# Timer valuestimer_values = {pins[f"Water Shelf {i}"]: tk.StringVar() for i in range(1, 5)}def start_timer(pin, button, duration, label):    time.sleep(duration)    GPIO.output(pin, GPIO.HIGH)    button.config(text=f"{label} OFF", bg="#87CEFA")def toggle_water_shelf(pin, button, label):    print(f"Toggling water shelf {label} with pin {pin}")    if shelf_enabled_vars[pin].get():        if GPIO.input(pin):            GPIO.output(pin, GPIO.LOW)            button.config(text=f"{label} ON", bg="#2ecc71")            print(f"Water shelf {label} turned ON")            try:                duration = int(timer_values[pin].get())            except ValueError:                duration = 10            threading.Thread(target=start_timer, args=(pin, button, duration, label), daemon=True).start()            logging.debug(f"Water Shelf {label} turned ON for {duration} seconds.")        else:            GPIO.output(pin, GPIO.HIGH)            button.config(text=f"{label} OFF", bg="#87CEFA")            logging.debug(f"Water Shelf {label} turned OFF.")    else:        logging.debug(f"Watering not enabled for {label}.")def toggle_device(pin, button, label):    if GPIO.input(pin):        GPIO.output(pin, GPIO.LOW)        button.config(text=f"{label} ON", bg="#2ecc71")        logging.debug(f"{label} turned ON.")    else:        GPIO.output(pin, GPIO.HIGH)        button.config(text=f"{label} OFF", bg=DEFAULT_COLORS.get(pin, "#ffeb3b"))        logging.debug(f"{label} turned OFF.")# Main layoutframe = tk.Frame(win)frame.pack(expand=True, fill="both", pady=5)left_frame = tk.Frame(frame)left_frame.grid(row=0, column=0, padx=30, sticky="n")water_shelf_frame = tk.Frame(frame)water_shelf_frame.grid(row=0, column=1, padx=10, sticky="n")def create_toggle_button(label, pin, row):    button = tk.Button(left_frame, text=label + " OFF", bg=DEFAULT_COLORS.get(pin, "#ffeb3b"), width=20, height=2)    button.config(command=lambda: toggle_device(pin, button, label))    button.grid(row=row, column=0, padx=10, pady=2, sticky="w")    return buttoncontrols = [    ("LED Top Shelves", 17),    ("LED Bottom Shelves", 18),    ("Water Sprayer", 25),    ("Fans", 5),]for i, (label, pin) in enumerate(controls):    create_toggle_button(label, pin, i)def create_water_shelf_button(label, pin, row):    button = tk.Button(water_shelf_frame, text=label + " OFF", bg="#87CEFA", width=20, height=2)    button.config(command=lambda: toggle_water_shelf(pin, button, label))    button.grid(row=row, column=0, padx=10, pady=2, sticky="w")        shelf_checkbox = tk.Checkbutton(water_shelf_frame, text="Enable Watering", variable=shelf_enabled_vars[pin])    shelf_checkbox.grid(row=row, column=1, padx=10, pady=5, sticky="w")        timer_entry = tk.Entry(water_shelf_frame, textvariable=timer_values[pin], width=5)    timer_entry.grid(row=row, column=2, padx=10, pady=5, sticky="e")    timer_values[pin].set("10")    timer_label = tk.Label(water_shelf_frame, text="Seconds")    timer_label.grid(row=row, column=3, padx=5, pady=2, sticky="e")    return buttonwater_shelf_buttons = {}for i in range(1, 5):    water_shelf_buttons[pins[f"Water Shelf {i}"]] = create_water_shelf_button(f"Water Shelf {i}", pins[f"Water Shelf {i}"], i)# Scheduler setupscheduler = apscheduler.schedulers.background.BackgroundScheduler()scheduler.start()eventqueue = queue.Queue()# --- Create scheduler jobs ---def update_schedule(job_id, schedule_time, task_function, shelf, day_of_week, hour):    # Remove the old job (if exists) and add the new one    if scheduler.get_job(job_id):        logging.debug(f"Removing old job {job_id}")        scheduler.remove_job(job_id)    logging.debug(f"Adding new job {job_id} with schedule {schedule_time}")    scheduler.add_job(task_function, 'cron', id=job_id, **schedule_time, args=[shelf], misfire_grace_time=10, replace_existing=True)def enqueue_event(shelf):    logging.debug(f"Watering {shelf} for the scheduled duration.")    print(f"Watering {shelf} for the scheduled duration.")job_id = 0for shelf in range(4):    for day_of_week in range(7):        for hour in range(24):            event = {"shelf": shelf, "day_of_week": day_of_week, "hour": hour}            scheduler.add_job(lambda e=event: eventqueue.put(e), 'cron', day_of_week=day_of_week, hour=hour, id=f'job_id_{job_id}')            job_id += 1logging.debug(f"Total scheduled jobs: {job_id}")if not scheduler.running:    scheduler.start()def process_scheduled_event(event):    try:        logging.debug(f"Simulating button click for shelf {event['shelf']} on day {event['day_of_week']} at {event['hour']} o'clock")        # Get the pin number and button for the corresponding shelf        shelf_label = f"Water Shelf {event['shelf'] + 1}"        pin = pins.get(shelf_label)        button = water_shelf_buttons.get(pin)        if pin and button and shelf_enabled_vars[pin].get():            logging.debug(f"Triggering button for {shelf_label}")            button.invoke()  # Simulates a button click        else:            logging.debug(f"Skipping watering for {shelf_label} (not enabled or button missing).")    except Exception as e:        logging.error(f"Error processing scheduled event: {event}, Exception: {e}", exc_info=True)                # GUI Scheduling sectionschedule_frame = tk.Frame(win)schedule_frame.pack(pady=8)schedule_label = tk.Label(schedule_frame, text="Watering Schedule", font=("Arial", 14, "bold"))schedule_label.grid(row=0, column=0, columnspan=7, pady=1)# Days of the weekdays = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]day_vars = {day: tk.IntVar() for day in days}for i, day in enumerate(days):    tk.Checkbutton(schedule_frame, text=day, variable=day_vars[day]).grid(row=1, column=i, padx=30, pady=1)# Time selectiontime_frame = tk.Frame(schedule_frame)time_frame.grid(row=2, column=0, columnspan=7, pady=0)tk.Label(time_frame, text="").grid(row=0, column=0)# Define hour_vars before the Checkbuttonshour_vars = [tk.IntVar() for _ in range(24)] # Create an IntVar for each hour of the day# Create AM hours checkbuttonsfor i, hour in enumerate([f"{i}:00" for i in range(12)]):    tk.Checkbutton(time_frame, text=hour, variable=hour_vars[i]).grid(row=0, column=i)    # Create PM hours checkbuttons    for i, hour in enumerate([f"{i}:00" for i in range(12, 24)]):    tk.Checkbutton(time_frame, text=hour, variable=hour_vars[i+12]).grid(row=1, column=i)    # Shelf checkboxes in scheduler    shelf_schedule_vars = {f"Water Shelf {i}": tk.IntVar() for i in range(1, 5)}for i, shelf in enumerate(shelf_schedule_vars.keys()):    tk.Checkbutton(schedule_frame, text=shelf, variable=shelf_schedule_vars[shelf]).grid(row=3, column=i+1, padx=0, pady=5)def print_schedule():    selected_days = [day for day, var in day_vars.items() if var.get()]    selected_hours = [f"{i}:00" for i, var in enumerate(hour_vars) if var.get()]    selected_shelves = []    for i in range(1, 5):        if shelf_schedule_vars[f"Water Shelf {i}"].get() == 1:            duration_seconds = int(timer_values[pins[f"Water Shelf {i}"]].get())            selected_shelves.append(f"Shelf {i} ({duration_seconds} seconds)")    if selected_days and selected_hours and selected_shelves:        confirmation_text = (f"Scheduled: {', '.join(selected_shelves)}\n"                             f"Scheduled Days: {', '.join(selected_days)}\n"                             f"Scheduled Hours: {', '.join(selected_hours)}")        logging.debug(confirmation_text)        # Popup window for confirmation        popup = tk.Toplevel(win)        popup.title("Schedule Confirmation")        tk.Label(popup, text=confirmation_text, padx=20, pady=20).pack()    else:        logging.debug("No schedule selected.")# Button press logic without delay for immediate actiondef on_print_press(event):    print_schedule()  # Trigger the schedule print immediately# Update button bindingprint_button = tk.Button(schedule_frame, text="Print Schedule", bg="#16a085", fg="white", width=20, height=1)print_button.grid(row=4, column=0, columnspan=7, pady=0)print_button.bind("<ButtonPress-1>", on_print_press)# Update schedule function using the provided code snippetdef update_schedule(job_id, schedule_time, task_function, shelf, day_of_week, hour):    if scheduler.get_job(job_id):        logging.debug(f"Removing old job {job_id}")        scheduler.remove_job(job_id)    logging.debug(f"Adding new job {job_id} with schedule {schedule_time}")    scheduler.add_job(task_function, 'cron', id=job_id, **schedule_time, args=[shelf], misfire_grace_time=10, replace_existing=True)def enqueue_event(shelf):    logging.debug(f"Enqueueing event for {shelf}")    print(f"Watering {shelf} for the scheduled duration.")def print_schedule():    selected_days = [day for day, var in day_vars.items() if var.get()]    selected_hours = [f"{i}:00" for i, var in enumerate(hour_vars) if var.get()]    selected_shelves = []    for i in range(1, 5):        if shelf_schedule_vars[f"Water Shelf {i}"].get() == 1:            duration_seconds = int(timer_values[pins[f"Water Shelf {i}"]].get())            selected_shelves.append(f"Shelf {i} ({duration_seconds} seconds)")    if selected_days and selected_hours and selected_shelves:        confirmation_text = (f"Scheduled: {', '.join(selected_shelves)}\n"                             f"Scheduled Days: {', '.join(selected_days)}\n"                             f"Scheduled Hours: {', '.join(selected_hours)}")        logging.debug(confirmation_text)        # Popup window for confirmation        popup = tk.Toplevel(win)        popup.title("Schedule Confirmation")        tk.Label(popup, text=confirmation_text, padx=20, pady=20).pack()    else:        logging.debug("No schedule selected.")def stopProgram():    GPIO.cleanup()    scheduler.shutdown()    win.quit()tk.Button(win, text="Exit", bg="#c0392b", fg="white", width=20, height=2, command=stopProgram).pack(side="bottom", pady=1)# --- Scheduler Callback ---def tk_callback():        while True:        try:            # Read the event from background scheduler            event = eventqueue.get(block=False)            if False:                print(event)            # Evaluate the event, check if checkbox-conditions match            shelf_index = event["shelf"]            if day_vars[event["day_of_week"]].get() == 1 and \               hour_vars[event["hour"]].get() == 1 and \               shelf_schedule_vars[shelf_index ].get() == 1:                if debug: print(f"Water Shelf {shelf_index + 1} scheduled!")                toggle_water_shelf(shelf_index,                                   button_shelf[shelf_index],                                   activation_labels[shelf_index])        except queue.Empty:            break            win.after(500, tk_callback)win.after(500, tk_callback)    win.mainloop()

Code:

def process_scheduled_event(event):    try:        logging.debug(f"Simulating button click for shelf {event['shelf']} on day {event['day_of_week']} at {event['hour']} o'clock")        # Get the pin number and button for the corresponding shelf        shelf_label = f"Water Shelf {event['shelf'] + 1}"        pin = pins.get(shelf_label)        button = water_shelf_buttons.get(pin)        if pin and button and shelf_enabled_vars[pin].get():            logging.debug(f"Triggering button for {shelf_label}")            button.invoke()  # Simulates a button click        else:            logging.debug(f"Skipping watering for {shelf_label} (not enabled or button missing).")    except Exception as e:        logging.error(f"Error processing scheduled event: {event}, Exception: {e}", exc_info=True)