Jan Kamidra / Mbed OS UDP_Echo

UDP echo with thread

main.cpp@2:01b03970605d, 2019-07-03 (annotated)

Committer:
JohnnyK
Date:
Wed Jul 03 05:41:00 2019 +0000
Revision:
2:01b03970605d
Parent:
1:9c712ebb90d3
Child:
3:9ab431fc54e2
Rework - switch between auto IP or Static IP via definition ROUTER

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JohnnyK 2:01b03970605d 1 #include "mbed.h" //MbedOS 5.13
JohnnyK 0:9f56faada164 2 #include "EthernetInterface.h"
JohnnyK 0:9f56faada164 3
JohnnyK 2:01b03970605d 4 #define ADDRESS "192.168.1.10" //Here place IP of your PC. Run cmd.exe and write command ipconfig
JohnnyK 2:01b03970605d 5 #define LOCALPORT 20
JohnnyK 2:01b03970605d 6 #define REMOTEPORT 2000
JohnnyK 2:01b03970605d 7
JohnnyK 2:01b03970605d 8 #define ROUTER
JohnnyK 2:01b03970605d 9 #ifndef ROUTER
JohnnyK 2:01b03970605d 10 #define IP "192.168.1.1"
JohnnyK 2:01b03970605d 11 #define GATEWAY "0.0.0.0"
JohnnyK 2:01b03970605d 12 #define MASK "255.255.255.0"
JohnnyK 2:01b03970605d 13 #endif
JohnnyK 0:9f56faada164 14
JohnnyK 0:9f56faada164 15 Thread thread;
JohnnyK 0:9f56faada164 16 DigitalOut led1(LED1);
JohnnyK 0:9f56faada164 17 DigitalOut led2(LED2);
JohnnyK 0:9f56faada164 18
JohnnyK 0:9f56faada164 19 void udpEcho(){
JohnnyK 0:9f56faada164 20 EthernetInterface eth;
JohnnyK 0:9f56faada164 21 UDPSocket sock;
JohnnyK 2:01b03970605d 22 SocketAddress addr(0,LOCALPORT);
JohnnyK 2:01b03970605d 23 int eth_stat;
JohnnyK 2:01b03970605d 24 #ifndef ROUTER
JohnnyK 2:01b03970605d 25 eth.disconnect();
JohnnyK 2:01b03970605d 26 eth_stat = eth.set_network(IP,MASK,GATEWAY);
JohnnyK 2:01b03970605d 27 printf("set IP status: %i\n",eth_stat);
JohnnyK 2:01b03970605d 28 #endif
JohnnyK 2:01b03970605d 29 eth_stat = eth.connect();
JohnnyK 2:01b03970605d 30 printf("connect status: %i\n",eth_stat);
JohnnyK 0:9f56faada164 31 const char *ip = eth.get_ip_address();
JohnnyK 2:01b03970605d 32 const char *mac = eth.get_mac_address();
JohnnyK 2:01b03970605d 33 printf("MAC address is: %s\n", mac ? mac : "No MAC");
JohnnyK 2:01b03970605d 34 printf("IP address is: %s\n", ip ? ip : "No IP");
JohnnyK 0:9f56faada164 35 // Check ip
JohnnyK 2:01b03970605d 36 if(ip){// Check ip
JohnnyK 0:9f56faada164 37 sock.open(&eth);
JohnnyK 2:01b03970605d 38 sock.bind(LOCALPORT);
JohnnyK 2:01b03970605d 39 printf("Listen on local port: %d and send to remote port %d\n", LOCALPORT, REMOTEPORT);
JohnnyK 0:9f56faada164 40 char buffer[] = "Hello World, UDP Echo server";
JohnnyK 0:9f56faada164 41 printf("Sending message '%s' to server (%s)\n",buffer,ip);
JohnnyK 2:01b03970605d 42 sock.sendto(ADDRESS, REMOTEPORT, buffer, sizeof(buffer));
JohnnyK 0:9f56faada164 43 printf("Waiting for message...\n");
JohnnyK 0:9f56faada164 44
JohnnyK 0:9f56faada164 45 while(1) {
JohnnyK 0:9f56faada164 46 char in_buffer[80];
JohnnyK 0:9f56faada164 47 int n = sock.recvfrom(&addr, &in_buffer, sizeof(in_buffer));
JohnnyK 0:9f56faada164 48 in_buffer[n] = '\0';
JohnnyK 0:9f56faada164 49 printf("Recieved: %s\n", in_buffer);
JohnnyK 0:9f56faada164 50
JohnnyK 0:9f56faada164 51 char out_buffer[80];
JohnnyK 0:9f56faada164 52 n = sprintf(out_buffer,"Echo - %s", in_buffer);
JohnnyK 0:9f56faada164 53 out_buffer[n] = '\0';
JohnnyK 0:9f56faada164 54 printf("Send back: %s\n", out_buffer);
JohnnyK 2:01b03970605d 55 sock.sendto(addr.get_ip_address(), REMOTEPORT, out_buffer, sizeof(out_buffer));
JohnnyK 2:01b03970605d 56 printf("IP address is: %s\n", addr.get_ip_address());
JohnnyK 0:9f56faada164 57 led2 =! led2;
JohnnyK 0:9f56faada164 58 }
JohnnyK 0:9f56faada164 59 /*sock.close();
JohnnyK 0:9f56faada164 60 eth.disconnect(); */
JohnnyK 0:9f56faada164 61 }else{
JohnnyK 0:9f56faada164 62 printf("No IP\n");
JohnnyK 0:9f56faada164 63 //eth.disconnect();
JohnnyK 0:9f56faada164 64 printf("Thread end\n");
JohnnyK 0:9f56faada164 65 }
JohnnyK 0:9f56faada164 66 }
JohnnyK 0:9f56faada164 67
JohnnyK 0:9f56faada164 68
JohnnyK 0:9f56faada164 69 int main() {
JohnnyK 1:9c712ebb90d3 70 printf("UDP echo starting...\n");
JohnnyK 0:9f56faada164 71 thread.start(callback(udpEcho));
JohnnyK 0:9f56faada164 72 wait(1);
JohnnyK 0:9f56faada164 73
JohnnyK 0:9f56faada164 74 while(1) {
JohnnyK 0:9f56faada164 75 led1 =! led1;
JohnnyK 0:9f56faada164 76 wait(1);
JohnnyK 0:9f56faada164 77 }
JohnnyK 0:9f56faada164 78 }