11.4 DTMF Control

from contextlib import closing

import sys

import RPi.GPIO as GPIO

from time import sleep

GPIO.setwarnings(False)

GPIO.setmode(GPIO.BOARD)

GPIO.setup(7,GPIO.IN) # Configure the pin d4 as input pin

GPIO.setup(11,GPIO.IN) # Configure the pin d3 as input pin

GPIO.setup(15,GPIO.IN) # Configure the pin d2 as input pin

GPIO.setup(26,GPIO.IN) # Configure the pin d1 as input pin

GPIO.setup(22,GPIO.OUT)

GPIO.setup(18,GPIO.OUT)

GPIO.setup(24,GPIO.OUT)

GPIO.setup(16,GPIO.OUT)

GPIO.output(22,False)

GPIO.output(18,False)

while 1:

if(GPIO.input(15)&~GPIO.input(26)&~GPIO.input(11)&~GPIO.input(7)):

print('forward') # Output by DTMF decoder to RPi-0010

GPIO.output(22,True)

GPIO.output(16,True)

GPIO.output(18,False)

GPIO.output(24,False)

elif(GPIO.input(11)&~GPIO.input(26)&~GPIO.input(15)&~GPIO.input(7)):

print('left') # Output by DTMF decoder to RPi-0100

GPIO.output(22,False)

GPIO.output(24,True)

GPIO.output(16,True)

GPIO.output(18,False)

elif(GPIO.input(11)&~GPIO.input(26)&GPIO.input(15)&~GPIO.input(7)):

print('right') # Output by DTMF decoder to RPi-0110

GPIO.output(22,True)

GPIO.output(24,False)

GPIO.output(16,False)

GPIO.output(18,True)

elif(GPIO.input(11)&GPIO.input(26)&GPIO.input(15)&~GPIO.input(7)):

print('stop') # Output by DTMF decoder to RPi-0111

GPIO.output(22,False)

GPIO.output(24,False)

GPIO.output(16,False)

GPIO.output(18,False)

elif(~GPIO.input(11)&~GPIO.input(26)&~GPIO.input(15)&GPIO.input(7)):

print('reverse') # Output by DTMF decoder to RPi-1000

GPIO.output(22,False)

GPIO.output(24,True)

GPIO.output(16,False)

GPIO.output(18,True)

else:

print('enter valid input')