arduino与python通过udp通信（测试通过 初级简单）

zhaopengxslc

Arduino代码

1. /*
   
2.   UDPSendReceive.pde:
   
3. This sketch receives UDP message strings, prints them to the serial port
   
4. and sends an "acknowledge" string back to the sender
   
5. 
   
6. A Processing sketch is included at the end of file that can be used to send
   
7. and received messages for testing with a computer.
   
8. 
   
9. created 21 Aug 2010
   
10. by Michael Margolis
    
11. 
    
12. This code is in the public domain.
    
13. */
    
14. 
    
15. 
    
16. #include <SPI.h>         // needed for Arduino versions later than 0018
    
17. #include <Ethernet.h>
    
18. #include <EthernetUdp.h>         // UDP library from: [email][email protected][/email] 12/30/2008
    
19. 
    
20. 
    
21. // Enter a MAC address and IP address for your controller below.
    
22. // The IP address will be dependent on your local network:
    
23. byte mac[] = {  
    
24.   0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
    
25. IPAddress ip(192, 168, 2, 177);
    
26. 
    
27. unsigned int localPort = 8000;      // local port to listen on
    
28. 
    
29. // buffers for receiving and sending data
    
30. char packetBuffer[UDP_TX_PACKET_MAX_SIZE]; //buffer to hold incoming packet,
    
31. char  ReplyBuffer[] = "acknowledged";       // a string to send back
    
32. 
    
33. // An EthernetUDP instance to let us send and receive packets over UDP
    
34. EthernetUDP Udp;
    
35. 
    
36. void setup() {
    
37.   // start the Ethernet and UDP:
    
38.   Ethernet.begin(mac,ip);
    
39.   Udp.begin(localPort);
    
40. 
    
41.   Serial.begin(9600);
    
42. }
    
43. 
    
44. void loop() {
    
45.   // if there's data available, read a packet
    
46.   int packetSize = Udp.parsePacket();
    
47.   if(packetSize)
    
48.   {
    
49.     Serial.print("Received packet of size ");
    
50.     Serial.println(packetSize);
    
51.     Serial.print("From ");
    
52.     IPAddress remote = Udp.remoteIP();
    
53.     for (int i =0; i < 4; i++)
    
54.     {
    
55.       Serial.print(remote[i], DEC);
    
56.       if (i < 3)
    
57.       {
    
58.         Serial.print(".");
    
59.       }
    
60.     }
    
61.     Serial.print(", port ");
    
62.     Serial.println(Udp.remotePort());
    
63. 
    
64.     // read the packet into packetBufffer
    
65.     Udp.read(packetBuffer,UDP_TX_PACKET_MAX_SIZE);
    
66.     Serial.println("Contents:");
    
67.     Serial.println(packetBuffer);
    
68.     memset(packetBuffer,'\0',UDP_TX_PACKET_MAX_SIZE);
    
69. 
    
70.     // send a reply, to the IP address and port that sent us the packet we received
    
71.     Udp.beginPacket(Udp.remoteIP(),Udp.remotePort());
    
72.     Udp.write(ReplyBuffer);
    
73.     Udp.endPacket();
    
74.   }
    
75.   delay(10);
    
76. }
    

复制代码

python代码
[pre lang="python" line="1"]from socket import *

HOST="192.168.2.177"
PORT=8000
BUFSIZE=1024
ADDR=(HOST,PORT)

udpCliSock=socket(AF_INET,SOCK_DGRAM)
while True:
    data=raw_input(">")
    if not data:
        break
    udpCliSock.sendto(data,ADDR)
    data,ADDR=udpCliSock.recvfrom(BUFSIZE)
    if not data:
        break
    print data,ADDR
udpCliSock.close()
[/code]

说明：
arduino作为UDP服务器
python作为UDP客户端