Diff: main.cpp

Revision:

0:e0ec056e8895

Child:

1:617727625d66

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 06 14:58:18 2015 +0000
@@ -0,0 +1,73 @@
+/*UDP通信サンプル
+　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*/
+#include "mbed.h"
+#include "EthernetInterface.h" 
+
+Serial pc(USBTX, USBRX); // tx, rx
+
+const char* A_ADDRESS = "192.168.1.1"; 
+const int A_PORT = 1000;
+
+const char* B_ADDRESS = "192.168.1.2";
+const int B_PORT = 2000;
+
+int main() {
+       
+    char u_packet[2]; 
+    u_packet[0]=0x41; u_packet[1]=0x42; //ex.
+    char u_buff[10];
+
+    EthernetInterface eth; 
+    eth.init(A_ADDRESS, "255.255.255.0", ""); //    Use hard IP
+    pc.printf("IP : %s\n", eth.getIPAddress());
+    if (eth.connect() < 0) {
+        pc.printf("Failed to connect\n\r");
+        return -1;
+    }
+    
+    UDPSocket sockA; 
+    if (sockA.bind(A_PORT) < 0) {
+        pc.printf("Failed to bind UDP Socket to PORT : %d\n\r", A_PORT);
+        return -1;
+    }
+    else pc.printf("Bind UDP Socket to PORT : %d\n\r", A_PORT);
+    sockA.set_blocking(false);
+    
+    Endpoint EndpointA; 
+    EndpointA.set_address(A_ADDRESS, A_PORT);
+    
+    Endpoint EndpointB;
+    EndpointB.set_address(B_ADDRESS, B_PORT);
+
+    /*-----------
+      MAIN ROOP
+     -----------*/    
+    while(1) { 
+    /*--send--*/
+        pc.printf("Send : %s\n", u_packet);
+        int n_send=sockA.sendTo(EndpointB, (char*)u_packet, sizeof(u_packet));
+        wait_ms(1);            
+        
+        if(n_send < 0){
+            pc.printf("Send unsuccessfully\n");
+            return 0;
+        }
+        else pc.printf("Sent %d bytes Successfully!\n",n_send);
+    /*-receive--*/
+        int n_receive=sockA.receiveFrom(EndpointB, (char*)u_buff, sizeof(u_buff));
+        wait_ms(1);            
+
+        if(n_receive < 0){
+            pc.printf("Receive unsuccessfully\n");        
+            return 0;
+        }
+        else {
+             pc.printf("Received %d byte Successfully! %s\n",n_receive);
+             pc.printf("Received : %s\n",u_buff);
+        }
+    } 
+    
+    sockA.close(false);
+    eth.disconnect(); 
+    return 0;
+}
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