基于NIOS 网页控制LED实现.pdf
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NIOS 网页控制LED 实现
基于H3C40-V6 FPGA 开发板的web_server例子更改过来，此开发板的网络是基于
nichestack协议。
具体实现步骤为：
在web_server.c 里面添加以下声明：
#include altera_avalon_pio_regs.h
#include inc/sopc.h
#define HTTP_PORT 80
unsigned char rx_buf [100];
void httpTask();
unsigned char http_html_hdr[]={HTTP/1.1 200 OK\r\nContent-type:
text/html\r\n\r\n};
unsigned char testdata1_index_html[]=
{html\
headtitle芯蓝电子/title/head\
FORM ACTION=\/cgi-bin/mult.cgi\\
p\
centerLED灯=INPUT NAME=\m\ SIZE=\5\\
状态=INPUT NAME=\n\ SIZE=\5\BR\
INPUT TYPE=\SUBMIT\ VALUE=\确认\\
BRthis is a simple test for web server. =!--data_write--\r\n\
芯蓝电子科技\
/FORM/html\r\n};
声明一个结构体为：
struct inet_taskinfo httptask = {
to_wstask,
web server,
httpTask,
HTTP_PRIO,
APP_STACK_SIZE,
};
在WSInitialTask(void *pdata)里面将：
TK_NEWTASK(wstask) 改为K_NEWTASK(httptask);
新建http_task()函数其内容如下：
void httpTask()
{
int f_fd,c_fd,http_send,http_recv,fd_listen;
struct sockaddr_in sin, cin;
//char *ptr1,*ptr2;
int m,n;
int len = sizeof (cin);
//int a1,a2;
// char c = =;
sin.sin_family = AF_INET;
sin.sin_port = htons(HTTP_PORT);
sin.sin_addr.s_addr = INADDR_ANY;
f_fd = socket(AF_INET, SOCK_STREAM, 0);
if (f_fd == -1){
perror(fail to create socket.);
}
printf(1\n);
bind(f_fd, (struct sockaddr *)sin, sizeof (sin));
fd_listen = listen(f_fd, 1);
if (fd_listen == -1)
{
perror(call to listen\n);
exit(1);
}
printf(I am waiting for you...\n);
for (;;)
{
c_fd = accept(f_fd, (struct sockaddr *)cin, len);
if (c_fd == -1)
{
perror(fail to accept.\n);
exit(1);
}
printf(accept web sever.\n);
http_recv=recv(c_fd,rx_buf,100,0);
printf(rx_buf is :%s\n, rx_buf);
sscanf(rx_buf,%*[^?]?m=%dn=%d,m,n);
//
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