雄介 太田 / Mbed 2 deprecated UDPSocket_Sample

UDP通信のサンプルプログラム

Dependencies:   EthernetInterface mbed-rtos mbed

main.cpp@0:e0ec056e8895, 2015-04-06 (annotated)

Committer:
yusuke_kyo
Date:
Mon Apr 06 14:58:18 2015 +0000
Revision:
0:e0ec056e8895
Child:
1:617727625d66
UDP??????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yusuke_kyo 0:e0ec056e8895 1 /*UDP通信サンプル
yusuke_kyo 0:e0ec056e8895 2 　自分：mbedAから相手：mbedBへのデータ送信方法、相手：mbedBから自分：mbedAへのデータ受信方法*/
yusuke_kyo 0:e0ec056e8895 3 #include "mbed.h"
yusuke_kyo 0:e0ec056e8895 4 #include "EthernetInterface.h"
yusuke_kyo 0:e0ec056e8895 5
yusuke_kyo 0:e0ec056e8895 6 Serial pc(USBTX, USBRX); // tx, rx
yusuke_kyo 0:e0ec056e8895 7
yusuke_kyo 0:e0ec056e8895 8 const char* A_ADDRESS = "192.168.1.1";
yusuke_kyo 0:e0ec056e8895 9 const int A_PORT = 1000;
yusuke_kyo 0:e0ec056e8895 10
yusuke_kyo 0:e0ec056e8895 11 const char* B_ADDRESS = "192.168.1.2";
yusuke_kyo 0:e0ec056e8895 12 const int B_PORT = 2000;
yusuke_kyo 0:e0ec056e8895 13
yusuke_kyo 0:e0ec056e8895 14 int main() {
yusuke_kyo 0:e0ec056e8895 15
yusuke_kyo 0:e0ec056e8895 16 char u_packet[2];
yusuke_kyo 0:e0ec056e8895 17 u_packet[0]=0x41; u_packet[1]=0x42; //ex.
yusuke_kyo 0:e0ec056e8895 18 char u_buff[10];
yusuke_kyo 0:e0ec056e8895 19
yusuke_kyo 0:e0ec056e8895 20 EthernetInterface eth;
yusuke_kyo 0:e0ec056e8895 21 eth.init(A_ADDRESS, "255.255.255.0", ""); // Use hard IP
yusuke_kyo 0:e0ec056e8895 22 pc.printf("IP : %s\n", eth.getIPAddress());
yusuke_kyo 0:e0ec056e8895 23 if (eth.connect() < 0) {
yusuke_kyo 0:e0ec056e8895 24 pc.printf("Failed to connect\n\r");
yusuke_kyo 0:e0ec056e8895 25 return -1;
yusuke_kyo 0:e0ec056e8895 26 }
yusuke_kyo 0:e0ec056e8895 27
yusuke_kyo 0:e0ec056e8895 28 UDPSocket sockA;
yusuke_kyo 0:e0ec056e8895 29 if (sockA.bind(A_PORT) < 0) {
yusuke_kyo 0:e0ec056e8895 30 pc.printf("Failed to bind UDP Socket to PORT : %d\n\r", A_PORT);
yusuke_kyo 0:e0ec056e8895 31 return -1;
yusuke_kyo 0:e0ec056e8895 32 }
yusuke_kyo 0:e0ec056e8895 33 else pc.printf("Bind UDP Socket to PORT : %d\n\r", A_PORT);
yusuke_kyo 0:e0ec056e8895 34 sockA.set_blocking(false);
yusuke_kyo 0:e0ec056e8895 35
yusuke_kyo 0:e0ec056e8895 36 Endpoint EndpointA;
yusuke_kyo 0:e0ec056e8895 37 EndpointA.set_address(A_ADDRESS, A_PORT);
yusuke_kyo 0:e0ec056e8895 38
yusuke_kyo 0:e0ec056e8895 39 Endpoint EndpointB;
yusuke_kyo 0:e0ec056e8895 40 EndpointB.set_address(B_ADDRESS, B_PORT);
yusuke_kyo 0:e0ec056e8895 41
yusuke_kyo 0:e0ec056e8895 42 /*-----------
yusuke_kyo 0:e0ec056e8895 43 MAIN ROOP
yusuke_kyo 0:e0ec056e8895 44 -----------*/
yusuke_kyo 0:e0ec056e8895 45 while(1) {
yusuke_kyo 0:e0ec056e8895 46 /*--send--*/
yusuke_kyo 0:e0ec056e8895 47 pc.printf("Send : %s\n", u_packet);
yusuke_kyo 0:e0ec056e8895 48 int n_send=sockA.sendTo(EndpointB, (char*)u_packet, sizeof(u_packet));
yusuke_kyo 0:e0ec056e8895 49 wait_ms(1);
yusuke_kyo 0:e0ec056e8895 50
yusuke_kyo 0:e0ec056e8895 51 if(n_send < 0){
yusuke_kyo 0:e0ec056e8895 52 pc.printf("Send unsuccessfully\n");
yusuke_kyo 0:e0ec056e8895 53 return 0;
yusuke_kyo 0:e0ec056e8895 54 }
yusuke_kyo 0:e0ec056e8895 55 else pc.printf("Sent %d bytes Successfully!\n",n_send);
yusuke_kyo 0:e0ec056e8895 56 /*-receive--*/
yusuke_kyo 0:e0ec056e8895 57 int n_receive=sockA.receiveFrom(EndpointB, (char*)u_buff, sizeof(u_buff));
yusuke_kyo 0:e0ec056e8895 58 wait_ms(1);
yusuke_kyo 0:e0ec056e8895 59
yusuke_kyo 0:e0ec056e8895 60 if(n_receive < 0){
yusuke_kyo 0:e0ec056e8895 61 pc.printf("Receive unsuccessfully\n");
yusuke_kyo 0:e0ec056e8895 62 return 0;
yusuke_kyo 0:e0ec056e8895 63 }
yusuke_kyo 0:e0ec056e8895 64 else {
yusuke_kyo 0:e0ec056e8895 65 pc.printf("Received %d byte Successfully! %s\n",n_receive);
yusuke_kyo 0:e0ec056e8895 66 pc.printf("Received : %s\n",u_buff);
yusuke_kyo 0:e0ec056e8895 67 }
yusuke_kyo 0:e0ec056e8895 68 }
yusuke_kyo 0:e0ec056e8895 69
yusuke_kyo 0:e0ec056e8895 70 sockA.close(false);
yusuke_kyo 0:e0ec056e8895 71 eth.disconnect();
yusuke_kyo 0:e0ec056e8895 72 return 0;
yusuke_kyo 0:e0ec056e8895 73 }