from mPython import *
p1=MPythonPin(1, PinMode.ANALOG)
import time
while True:
oled.fill(0)
oled.DispChar("声音值:", 0, 0, 1)
oled.DispChar( , 50, 0, 1)
oled.show()
time.sleep_ms(500)
划线处应当填入的代码是( )