import RPi.GPIO as GPIO from LCD1602 import LCD_1602 import time BtnPin = 13 R = 4 G = 12 B = 6 TRIG = 17 ECHO = 18 flag = 2 buzzer = 20 GPIO.setwarnings(False) GPIO.setmode(GPIO.BCM) GPIO.setup(TRIG,GPIO.OUT,initial=GPIO.LOW) GPIO.setup(ECHO,GPIO.IN) GPIO.setup(R,GPIO.OUT) GPIO.setup(B, GPIO.OUT) GPIO.setup(G, GPIO.OUT) GPIO.setup(buzzer, GPIO.OUT) GPIO.setup(BtnPin,GPIO.IN, pull_up_down=GPIO.PUD_UP) GPIO.output(buzzer,GPIO.HIGH) m_lcd = LCD_1602(Address=0x27, bus_id=1, bl=1) flag = m_lcd.lcd_init() while True: if GPIO.input(BtnPin) == 0: flag += 1 elif GPIO.input(BtnPin) == 1: pass if flag % 2 == 0: for i in range(10): GPIO.output(G,GPIO.LOW) GPIO.output(B,GPIO.LOW) GPIO.output(buzzer,GPIO.HIGH) GPIO.output(TRIG,GPIO.HIGH) time.sleep(0.000015) GPIO.output(TRIG,GPIO.LOW) while not GPIO.input(ECHO): pass t1 = time.time() while GPIO.input(ECHO): pass t2 = time.time() distance = round((t2-t1) * 340 / 2,5) if distance < 0.2: GPIO.output(B,GPIO.HIGH) GPIO.output(buzzer,GPIO.LOW) print("当前的距离为:",distance) a = '%f'%distance m_lcd.lcd_display_string(0, 0, 'The distance is') m_lcd.lcd_display_string(0, 1, a) m_lcd.lcd_display_string(8, 1, 'm') time.sleep(1) elif flag % 2 == 1: GPIO.output(G,GPIO.HIGH) GPIO.cleanup()，帮我封装一下代码

Sure, here's the code wrapped in a function:

import RPi.GPIO as GPIO
from LCD1602 import LCD_1602
import time

def run_distance_sensor():
    BtnPin = 13
    R = 4
    G = 12
    B = 6
    TRIG = 17
    ECHO = 18
    flag = 2
    buzzer = 20

    GPIO.setwarnings(False)
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(TRIG,GPIO.OUT,initial=GPIO.LOW)
    GPIO.setup(ECHO,GPIO.IN)
    GPIO.setup(R,GPIO.OUT)
    GPIO.setup(B, GPIO.OUT)
    GPIO.setup(G, GPIO.OUT)
    GPIO.setup(buzzer, GPIO.OUT)
    GPIO.setup(BtnPin,GPIO.IN, pull_up_down=GPIO.PUD_UP)
    GPIO.output(buzzer,GPIO.HIGH)

    m_lcd = LCD_1602(Address=0x27, bus_id=1, bl=1)
    flag = m_lcd.lcd_init()

    while True:
        if GPIO.input(BtnPin) == 0:
            flag += 1
        elif GPIO.input(BtnPin) == 1:
            pass
        if flag % 2 == 0:
            for i in range(10):
                GPIO.output(G,GPIO.LOW)
                GPIO.output(B,GPIO.LOW)
                GPIO.output(buzzer,GPIO.HIGH)
                GPIO.output(TRIG,GPIO.HIGH)
                time.sleep(0.000015)
                GPIO.output(TRIG,GPIO.LOW)
                
                while not GPIO.input(ECHO):
                    pass
                t1 = time.time()
                while GPIO.input(ECHO):
                    pass
                t2 = time.time()
                
                distance = round((t2-t1) * 340 / 2,5)
                if distance < 0.2:
                    GPIO.output(B,GPIO.HIGH)
                    GPIO.output(buzzer,GPIO.LOW)
                print("当前的距离为:",distance)
                a = '%f'%distance
                m_lcd.lcd_display_string(0, 0, 'The distance is')
                m_lcd.lcd_display_string(0, 1, a)
                m_lcd.lcd_display_string(8, 1, 'm')
                time.sleep(1)
        elif flag % 2 == 1:
            GPIO.output(G,GPIO.HIGH)
    
    GPIO.cleanup()

You can call the `run_distance_sensor()` function to start running the distance sensor code.