64 lines
2.1 KiB
Python
64 lines
2.1 KiB
Python
import sys
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import os
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import threading
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import tkinter as tk
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from tkinter import ttk
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import RPi.GPIO as GPIO
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from matplotlib.figure import Figure
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from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
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import time
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# Add the parent directory to the module search path
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sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
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from interface_board_pins import * # Import pin assignments
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# Adjusted Constants
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DIGITAL_PLOT_UPDATE_INTERVAL = 50 # 50ms (20 FPS) is smooth enough
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NOT_ACTIVE_CHECK_INTERVAL = 2000 # Check inactive tabs less frequently
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MAX_HISTORY = 100 # Keep last 100 values for scrolling
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updating_enabled = False # Track if the tab is active
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input_channels = list(range(8))
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data = {ch: [0] * MAX_HISTORY for ch in input_channels} # Preallocate data
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time_data = list(range(-MAX_HISTORY, 0)) # Simulated time axis
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def create_digital_plot_tab(notebook):
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frame = ttk.Frame(notebook)
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notebook.add(frame, text="Digital Inputs")
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figure = Figure(figsize=(8, 5), dpi=100)
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ax = figure.add_subplot(1, 1, 1)
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ax.set_ylim(-0.2, 1.2)
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ax.set_xlim(-MAX_HISTORY, 0) # Keep time axis fixed
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canvas = FigureCanvasTkAgg(figure, master=frame)
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canvas.get_tk_widget().pack(fill=tk.BOTH, expand=True)
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# Initialize lines for fast updates
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lines = {ch: ax.step(time_data, data[ch], where="post")[0] for ch in input_channels}
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def update_plot():
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if not updating_enabled:
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frame.after(NOT_ACTIVE_CHECK_INTERVAL, update_plot)
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return
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# Shift existing data left
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for ch in input_channels:
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data[ch].pop(0)
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data[ch].append(GPIO.input(GPIO_DIGITAL_INPUTS[ch]))
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# Update only the y-data for efficiency
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for ch in input_channels:
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lines[ch].set_ydata(data[ch])
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canvas.draw_idle() # More efficient than draw()
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frame.after(DIGITAL_PLOT_UPDATE_INTERVAL, update_plot)
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update_plot()
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def set_updating_enabled(is_active):
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global updating_enabled
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updating_enabled = is_active
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print(f"digital_plot tab: set updating_enabled to {updating_enabled}")
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