Hello,
I try to setup a simple udp communication between an UDP client on my PC and the K60 tower. I have wireshark on the PC and I see the outgoing frame to the K60. I have follow the socket example Quote of the Day in the Freescale MQX™ RTCS™ User’s Guide.
When I run the app on the board the RTCS_selectall function return immediately (before I send anything through the network) with a valid socket number but when I read the datas with the recvfrom function the IP address, the TCP port and the datas are 0. Afterthat when I try to send UDP frame's the selectall function never detect activity on the socket. Thank for your help. The udp task that I write:
/*TASK*-----------------------------------------------------------------
*
* Function Name : udp_task
* Returned Value : void
* Comments :
*
*END------------------------------------------------------------------*/
void udp_task(uint_32 temp)
{
static uint_32 sSocketHndl;
static uint_32 sListenSocketHndl;
static uint_16 sRemoteRxLengh;
static int_32 sNbOfByteReceived;
static int_32 sNbOfByteTransmit;
static sockaddr_in sLocalAddr;
static sockaddr_in sRemoteTxAddr;
static sockaddr_in sRemoteRxAddr;
static uchar sUdpRemoteBuffer[kUDP_BUF_LEN];
static int_32 error;
static uint_32 sUerror;
static _enet_handle sEthernetHandle;
static _rtcs_if_handle sRTCSHandle;
static _enet_address sMacAddress;
/* We are running on a memory constrained device, lower RTCS's defaults */
/* runtime RTCS configuration */
_RTCSPCB_init = 4;
_RTCSPCB_grow = 2;
_RTCSPCB_max = 6;
_RTCS_msgpool_init = 4;
_RTCS_msgpool_grow = 2;
_RTCS_msgpool_max = 8;
_RTCS_socket_part_init = 4;
_RTCS_socket_part_grow = 2;
_RTCS_socket_part_max = 6;
_RTCSTASK_stacksize = 2200;
error = RTCS_create();
ENET_get_mac_address(DEMOCFG_DEFAULT_DEVICE, ENET_IPADDR, sMacAddress);
sUerror = ENET_initialize(DEMOCFG_DEFAULT_DEVICE,sMacAddress, 0, &sEthernetHandle);
if(sUerror!=ENET_OK)
_task_block();
sUerror = RTCS_if_add(sEthernetHandle, RTCS_IF_ENET, &sRTCSHandle);
if(sUerror!=RTCS_OK)
_task_block();
sUerror = RTCS_if_bind(sRTCSHandle, ENET_IPADDR, ENET_IPMASK);
if(sUerror!=RTCS_OK)
_task_block();
// Config du gateway address
/*sUerror = RTCS_gate_add(ENET_IPGATEWAY, INADDR_ANY, INADDR_ANY);
if(sUerror!=RTCS_OK)
_task_block();*/
sSocketHndl = socket(PF_INET, SOCK_DGRAM, 0);
if(sSocketHndl == RTCS_SOCKET_ERROR)
_task_block();
sLocalAddr.sin_family = AF_INET;
sLocalAddr.sin_port = 10;
sLocalAddr.sin_addr.s_addr = IPADDR(157,26,100,93);//INADDR_ANY;
sUerror = bind(sSocketHndl, &sLocalAddr, sizeof(sLocalAddr));
if(sUerror != RTCS_OK)
_task_block();
sListenSocketHndl=sSocketHndl;
sRemoteTxAddr.sin_family = AF_INET;
sRemoteTxAddr.sin_port = 8;
sRemoteTxAddr.sin_addr.s_addr = IPADDR(157,26,100,78);
sUerror=connect(sListenSocketHndl, &sRemoteTxAddr, sizeof(sRemoteTxAddr));
if(sUerror != RTCS_OK)
_task_block();
while(1)
{
sSocketHndl = RTCS_selectall(0);
if(sSocketHndl == RTCS_SOCKET_ERROR)
_task_block();
if(sSocketHndl==sListenSocketHndl)
{
memset(&sRemoteRxAddr, 0, sizeof(sRemoteRxAddr));
memset(&sUdpRemoteBuffer,0, kUDP_BUF_LEN); //clean out buffer
sRemoteRxLengh = sizeof(sRemoteRxAddr);
sNbOfByteReceived = recvfrom(sSocketHndl, sUdpRemoteBuffer, kUDP_BUF_LEN, 0, &sRemoteRxAddr, &sRemoteRxLengh);
if (sNbOfByteReceived == RTCS_ERROR)
_task_block();
sRemoteRxAddr.sin_addr.s_addr=INADDR_BROADCAST;
sRemoteRxLengh = sizeof(sRemoteRxLengh);
sNbOfByteTransmit = sendto(sSocketHndl,"Fuck hackers",13,RTCS_MSG_NOLOOP,&sRemoteRxAddr, sRemoteRxLengh);
if (sNbOfByteTransmit == RTCS_ERROR)
_task_block();
}
}
}
