Ethernet with NiosII on Cyclone III FPGA Board?

i have been researching how to hookup the TSE core to a NIOS processor for a while now. through your link to the 9.0.2 version ( i had the 7.2 version) i finally found the solution! all along, i just needed to use a Scatter-Gather DMA Controller to connect the streaming sources to the NIOS.

unfortunately, now i have to figure out how to send and recieve UDP messages... haha. Thanks for the Information Daixiwen.

Hello Dai -

I did get the linux build/hjardware you sent me a link to (the one without the LCD nios) up and running the SSS example - now I am trying to get UDP running on it. I replaced SSSSimpleSocketServer() with the following... The results is that I get nothing when sending a udp packet to the board. The code is stalled in the recvfrom and it is waiting... I am using UDP tester to send to port 1024 and verifying that it is on the wire with packetmon...

Any help would be most appreciated...

Thanks - Chris

void ssssimplesocketservertask()

{

struct sockaddr_in serverAddr;

int udpsock, status=0, bytes_sent=0;

alt_u8 buf[MAX_UDP_LENGTH], id_packet=0;

int fromlen;

//----------- Socket Configuration --------------

serverAddr.sin_family = AF_INET;

serverAddr.sin_port = htons(UDP_PORT);

serverAddr.sin_addr.s_addr = INADDR_ANY;

fromlen = sizeof (serverAddr);

if ((udpsock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { // protocol <IPPROTO_UDP>

alt_NetworkErrorHandler(EXPANDED_DIAGNOSIS_CODE,"[sss_task] Socket creation failed");

}

//----------- system init goes here --------------

//----------------------------------------------

//------------- Main loop for task ---------------

//----------------------------------------------

while(1){

printf("listening to UDP port...\n");

printf("serverAddr.sin_family = %08x\n", serverAddr.sin_family);

printf("serverAddr.sin_port =%08x\n", serverAddr.sin_port);

printf("serverAddr.sin_addr.s_addr =%08x\n", serverAddr.sin_addr.s_addr);

printf("serverAddr =%08x\n", serverAddr);

if((recvfrom(udpsock, buf, 10, 0,(struct sockaddr*)&serverAddr, &fromlen)) <0 )

{

alt_NetworkErrorHandler(EXPANDED_DIAGNOSIS_CODE,"[sss_task] rx UDP error");

}

else

{

printf("we got here\n");

}

&#12288;

printf("datagram : %s", buf);

}