EthernetUDPSocket_OpenServer.mc

 
#include "..\..\..\SDK\SDK_ApossC.mc"
#include <SysDef.mh>
 
// Parameters for the SDK function
#define MY_PORT_NUM      3000   // Define TCP Port number
#define CYCLE_TIME       1000   // ms → 0 to disable
 
// Local functions
void EthernetSendData_sendCycle(void);
void FunctionEthernetHandler(void);
 
// global variables
long server_handle;
long status,status_old;
 
long main(void)
{
    long ip = SYS_INFO(SYS_IP_ADDRESS_CONTROLLER);
;
    // All errors are cleared at the beginning of the program.
    ErrorClear();
 
    print("EthernetOpenServer (UDP) with port: ",MY_PORT_NUM);
    print("IP address of this Server is: ",((ip)&0xFF),".",((ip>>8)&0xFF),".",((ip>>16)&0xFF),".",((ip>>24)&0xFF));
 
    // opening an ethernet server in case of a failure the program will be terminated
    server_handle = EthernetOpenServer(PROT_UDP, MY_PORT_NUM);
    print(" returned handler 'server_handle' : ",server_handle);
    if(server_handle<0)
    {
        print("Exit program");
        Exit(0);
    }
 
    // Wating for connection
    print("Wating for connection");
    while(3 != EthernetGetConnectionStatus(server_handle));
 
    // Start ethernet interrupts
    InterruptSetup(ETHERNET, FunctionEthernetHandler, server_handle);
    InterruptSetup(PERIOD, EthernetSendData_sendCycle, CYCLE_TIME);
 
    while (1)
    {
        status = EthernetGetConnectionStatus(server_handle);
        if(status != status_old)
        {
            sdkEthernetPrintConnectionStatus(status);
            status_old=status;
            Delay(1);
        }
    }
 
    return(0);
}
 
void FunctionEthernetHandler(void)
{
    long result = 0;
    wchar receiveArray[50]="";
    arrayset(receiveArray,0,50);
 
    result = EthernetReceiveTelegram(server_handle, receiveArray);
    print("we received a UDP Telegram at time: ", Time(),"  size: ",result," data: ",receiveArray);
 
    return;
}
 
 
void EthernetSendData_sendCycle(void)
{
    long result;
    wchar sendArray[40] = "";
 
    sprintf(sendArray, "UDP Server says Hello time: %d\n",Time());
    result = EthernetSendTelegram(server_handle, sendArray, arraylen(sendArray));
    print("SendCyclic time: ",Time());
    if (result != 0) {
        sdkEthernetPrintGeneralResult(result);
    }
 
    return;
}