SunFounder PiCar-4WD, Руководство пользователя, Страница: 68 / 72

63
keyboard_control.py
In the code, we use readchar and readkey to get the input state of the key, then we assign some functions
to the keys by using if statement.
import picar_4wd as fc
import sys
import tty
import termios
import asyncio
power_val = 50
key = 'status'
def readchar ():
……
def readkey ( getchar_fn = None ):
getchar = getchar_fn or readchar
……
def Keyborad_control ():
while True :
global power_val
key = readkey ()
if key == '6' :
……
elif key == '4' :
……
if key == 'w' :
……
elif key == 'a' :