树莓派小车By 树莓派爱好者ITJoker（通过python socket通信实现树莓派视频小车）

 1 ###########################################
 2 #Writer: Joker                                                                       #
 3 #Time: 2017.6.25                                                                   #
 4 ###########################################
 5 # -*- coding: utf-8 -*-
 6 import RPi.GPIO as GPIO
 7 from socket import *
 8 import time
 9 def t_init():
10         GPIO.setmode(GPIO.BOARD)
11         GPIO.setwarnings(False)
12         GPIO.setup(11,GPIO.OUT)
13         GPIO.setup(12,GPIO.OUT)
14         GPIO.setup(13,GPIO.OUT)
15         GPIO.setup(15,GPIO.OUT)
16 def t_stop():
17         GPIO.output(11, False)
18         GPIO.output(12, False)
19         GPIO.output(13, False)
20         GPIO.output(13, False)
21         GPIO.output(15, False)
22         time.sleep(1)
23         GPIO.cleanup()
24 def t_up():
25         t_init()
26         GPIO.output(11, True)
27         GPIO.output(12, False)
28         GPIO.output(13, True)
29         GPIO.output(15, False)
30         time.sleep(1)
31         GPIO.cleanup()
32  
33 def t_down():
34         t_init()
35         GPIO.output(11, False)
36         GPIO.output(12, True)
37         GPIO.output(13, False)
38         GPIO.output(15, True)
39         time.sleep(1)
40         GPIO.cleanup()
41  
42 def t_right():
43         t_init()
44         GPIO.output(11, False)
45         GPIO.output(12, True)
46         GPIO.output(13, True)
47         GPIO.output(15, False)
48         time.sleep(1)
49         GPIO.cleanup()
50 def t_left():
51         t_init()
52         GPIO.output(11, True)
53         GPIO.output(12, False)
54         GPIO.output(13, False)
55         GPIO.output(15, True)
56         time.sleep(1)
57         GPIO.cleanup()
58 #########################################################
59 #Writer: Joker                                                                       #
60 #Time: 2017.6.25                                                                   #
61 #########################################################
62 def commands (cmd):
63     if cmd == ‘d‘:
64       t_down()
65     elif cmd == ‘s‘:
66       t_stop()
67     elif cmd == ‘u‘:
68       t_up()
69     elif cmd == ‘l‘:
70       t_left()
71     elif cmd == ‘r‘:
72       t_right()
73 def execute(command):
74     print command
75     commands(command)
76 HOST =‘192.168.1.103‘ #the ip of raspberry pi
77 PORT = 8888           #the port of raspberry pi
78 s= socket(AF_INET, SOCK_STREAM)
79 s.bind((HOST, PORT))
80 s.listen(1000)
81 print (‘listening on 8888‘)
82 while 1:
83     conn, addr = s.accept()
84     print (‘Connected by:‘, addr)
85     while 1:
86             command= conn.recv(20).replace(‘\n‘,‘‘)
87             if command == ‘g‘:
88               conn.close
89               break
90             elif not command:break
91             a=bytearray(command)
92             execute(a) #command 
93     conn.close()
94 ############################################################################