我正试图显示我从串行端口得到的数据（由Arduino发送）在一个图表.我已经尝试了不同的东西吨，但它似乎并不像预期的那样工作.我试图有x轴的时间，因为程序开始和y轴的数据，我从串行端口是从Arduino发送.我已经尝试调试，但没有错误出现.代码似乎在update_graphs（）函数的某个地方停止了，但我不知道是什么原因导致它停止。我很迷茫，不知道现在该怎么做

import tkinter as tk
from tkinter import ttk
import matplotlib.pyplot as plt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
import serial
import threading
import queue
import time

# Function to read data from the serial port
def read_serial_data(serial_port, data_queue):
    while True:
        try:
            line = serial_port.readline().decode().strip()
            data_queue.put(line)
        except UnicodeDecodeError:
            pass

# Function to update the graphs
def update_graphs():
    start_time = time.time()
    global x_data
    while True:
        try:
            data = data_queue.get_nowait()

            # Calculate the time since the program started
            current_time = time.time() - start_time

            # Update the graphs with the new data and time
            x_data.append(current_time)

            # Attempt to add data to y_data as a float
            try:
                y_data.append(float(data))
            except ValueError:
                print(f"Error converting data to float: {data}")
                
            x_data = x_data[-len(y_data):] #limits data in the list

            ax1.clear()
            ax1.plot(x_data, y_data, label='Sensor Data 1')
            ax1.set_xlabel('Time (seconds)')
            ax1.set_ylabel('Sensor Data 1')
            ax1.legend()

            canvas.draw()

        except queue.Empty:
            pass
        root.after(100, update_graphs)

# GUI setup
root = tk.Tk()
root.title("Sensor Data Graphs")

# Serial port setup
ser = serial.Serial("COM5", baudrate=9600)

# Data queue for inter-thread communication
data_queue = queue.Queue()

# Create and start a thread to read data from the serial port
serial_thread = threading.Thread(target=read_serial_data, args=(ser, data_queue), daemon=True)
serial_thread.start()

# Create and start a thread to update the graphs
update_thread = threading.Thread(target=update_graphs, daemon=True)
update_thread.start()

# Create multiple graphs
fig, ax1 = plt.subplots()
x_data, y_data = [], []  # Lists to store data and corresponding time

# Create Tkinter canvas for embedding Matplotlib figure
canvas = FigureCanvasTkAgg(fig, master=root)
canvas_widget = canvas.get_tk_widget()
canvas_widget.pack(side=tk.TOP, fill=tk.BOTH, expand=1)

# Start the Tkinter main loop
root.mainloop()

字符串
Arduino代码

void setup() {
  
    Serial.begin(9600);

}

void loop() {
  Serial.println(random(0, 50));
  delay(200);
}

型
我试着放慢Arduino代码的速度，认为它发送数据的速度太快，Python脚本无法读取，但它不起作用

• 更新 *
  相当肯定，这与时间有关，因为当我在vscode中使用调试并逐行运行时，一切都正常，但当我让它自己运行时，它只是冻结，不会做任何事情。

Arduino代码保持不变
更新代码：

import tkinter as tk
from tkinter import ttk
import matplotlib.pyplot as plt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
import serial
import threading
import queue
import time

# Function to read data from the serial port
def read_serial_data(serial_port, data_queue):
    while True:
        try:
            line = serial_port.readline().decode().strip()
            data_queue.put(line)
        except UnicodeDecodeError:
            pass

# Function to update the graphs
def update_graphs(start_time):
    while True:
        try:
            data = data_queue.get(timeout=1)

            # Calculate the time since the program started
            current_time = time.time() - start_time

            # Update the graphs with the new data and time
            x_data.append(current_time)
            y_data.append(float(data))

            ax1.clear()
            ax1.plot(x_data, y_data, label='Sensor Data 1')
            ax1.set_xlabel('Time (seconds)')
            ax1.set_ylabel('Sensor Data 1')
            ax1.legend()

            canvas.draw()

        except queue.Empty:
            pass
        except Exception as e:
            print(f"Error in update_graphs: {e}")

# GUI setup
root = tk.Tk()
root.title("Sensor Data Graphs")

# Serial port setup
ser = serial.Serial("COM5", baudrate=9600)

# Data queue for inter-thread communication
data_queue = queue.Queue()

# Create and start a thread to read data from the serial port
serial_thread = threading.Thread(target=read_serial_data, args=(ser, data_queue), daemon=True)
serial_thread.start()

# Create multiple graphs
fig, ax1 = plt.subplots()
x_data, y_data = [], []  # Lists to store data and corresponding time

# Create Tkinter canvas for embedding Matplotlib figure
canvas = FigureCanvasTkAgg(fig, master=root)
canvas_widget = canvas.get_tk_widget()
canvas_widget.pack(side=tk.TOP, fill=tk.BOTH, expand=1)

# Get the start time
start_time = time.time()

# Schedule the update_graphs function to run every 100 milliseconds
root.after(200, update_graphs, start_time)

# Start the Tkinter main loop
root.mainloop()

型

• 更新 *
  图表似乎只在我使用vscode中的调试功能暂停和取消暂停程序时更新