zedboard 的FPGA的ROM弄个正弦波数据，用udp发送

1. 构架，UDP发送部分， FPGA和ARM数据交互部分，FPGA保存ROM正弦波数据

2. UDP发送部分。在电脑的ubuntu 虚拟机里面，安装xilinx的交叉编译环境。编译.c文件。 UDP操作函数没问题，但是怎么从FPGA取数据的函数是啥？

3. UDP的发送代码如下：

 

#include <stdio.h>              // 标准输入输出 perror函数
#include <string.h>             // 字符数组相关函数 bzero函数 strcmp
#include <stdlib.h>             // 标准库
#include <sys/types.h>  
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <signal.h>
#define SERVER_PORT 8889
int main(int argc, char **argv)
{
    int iSocketServer;
    int iRet;
    int i = 100;
    unsigned char ucsSendBuf[1024];
    struct sockaddr_in tSocketServerAddr;
    struct sockaddr_in tSocketClientAddr;
    //signal(SIGCHLD,SIG_IGN);//处理僵尸进程的，可以看我那篇关于僵尸进程的博客
    //iSocketServer = socket(AF_INET, SOCK_STREAM, 0);
    iSocketServer = socket(AF_INET, SOCK_DGRAM, 0);
    if (-1 == iSocketServer)
    {
        printf("socket error!\n");
        return -1;
    }
    tSocketClientAddr.sin_family      = AF_INET;
    tSocketClientAddr.sin_port        = htons(8880);  /* host to net, short */
    tSocketClientAddr.sin_addr.s_addr = INADDR_ANY;
    //memset(tSocketClientAddr.sin_zero, 0, 8);
    iRet = bind(iSocketServer, (const struct sockaddr *)&tSocketClientAddr, sizeof(struct sockaddr));
    if (-1 == iRet)
    {
        printf("bind error!\n");
        return -1;
    }
    tSocketServerAddr.sin_family      = AF_INET;
    tSocketServerAddr.sin_port        = htons(SERVER_PORT);  /* host to net, short */
     tSocketServerAddr.sin_addr.s_addr = inet_addr("192.168.1.11");
    //memset(tSocketServerAddr.sin_zero, 0, 8);
    while(i--)
    {
        /*一直向saddr的地址（接收端IP和端口号），发送udp包*/
        sendto(iSocketServer,ucsSendBuf,1024,0,(struct sockaddr*)&tSocketServerAddr,sizeof(tSocketServerAddr));
        sleep(30);    
    }    
    close(iSocketServer);
    return 0;
}