how to g

Posted on May 28, 2018 at 15:01

 so what I wrote is correct ? 

struct fs_file *file;

recv_err = fs_open ( fichier, '/ STM32F4xx_files / ST.gif'); 

but I have the same warning sayin file may be used uninitialized in this function

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Posted on May 28, 2018 at 16:30

here all the code for the http server based on netconn

/**

* @brief serve tcp connection

* @param conn: pointer on connection structure

* @retval None

*/

void http_server_serve(struct netconn *conn)

{

struct netbuf *inbuf;

err_t recv_err;

char* buf;

u16_t buflen;

struct fs_file * file;

/* Read the data from the port, blocking if nothing yet there.

We assume the request (the part we care about) is in one netbuf */

recv_err = netconn_recv(conn, &inbuf);

if (recv_err == ERR_OK)

{

if (netconn_err(conn) == ERR_OK)

{

netbuf_data(inbuf, (void**)&buf, &buflen);

/* Is this an HTTP GET command? (only check the first 5 chars, since

there are other formats for GET, and we're keeping it very simple )*/

if ((buflen >=5) && (strncmp(buf, 'GET /', 5) == 0))

{

/* Check if request to get ST.gif */

if (strncmp((char const *)buf,'GET /STM32F4xx_files/ST.gif',27)==0)

{

recv_err = fs_open(file,'/STM32F4xx_files/ST.gif');

netconn_write(conn, (const unsigned char*)(file->data), (size_t)file->len, NETCONN_NOCOPY);

fs_close(file);

}

/* Check if request to get stm32.jpeg */

else if (strncmp((char const *)buf,'GET /STM32F4xx_files/stm32.jpg',30)==0)

{

recv_err = fs_open(file,'/STM32F4xx_files/stm32.jpg');

netconn_write(conn, (const unsigned char*)(file->data), (size_t)file->len, NETCONN_NOCOPY);

fs_close(file);

}

else if (strncmp((char const *)buf,'GET /STM32F4xx_files/logo.jpg', 29) == 0)

{

/* Check if request to get ST logo.jpg */

recv_err = fs_open(file,'/STM32F4xx_files/logo.jpg');

netconn_write(conn, (const unsigned char*)(file->data), (size_t)file->len, NETCONN_NOCOPY);

fs_close(file);

}

else if(strncmp(buf, 'GET /STM32F4xxTASKS.html', 24) == 0)

{

/* Load dynamic page */

DynWebPage(conn);

}

else if((strncmp(buf, 'GET /STM32F4xx.html', 19) == 0)||(strncmp(buf, 'GET / ', 6) == 0))

{

/* Load STM32F4x7 page */

recv_err = fs_open(file,'/STM32F4xx.html');

netconn_write(conn, (const unsigned char*)(file->data), (size_t)file->len, NETCONN_NOCOPY);

fs_close(file);

}

else

{

/* Load Error page */

recv_err = fs_open(file,'/404.html');

netconn_write(conn, (const unsigned char*)(file->data), (size_t)file->len, NETCONN_NOCOPY);

fs_close(file);

}

}

}

}

/* Close the connection (server closes in HTTP) */

netconn_close(conn);

/* Delete the buffer (netconn_recv gives us ownership,

so we have to make sure to deallocate the buffer) */

netbuf_delete(inbuf);

}

/**

* @brief http server thread

* @param arg: pointer on argument(not used here)

* @retval None

*/

static void http_server_netconn_thread(void *arg)

{

struct netconn *conn, *newconn;

err_t err, accept_err;

/* Create a new TCP connection handle */

conn = netconn_new(NETCONN_TCP);

if (conn!= NULL)

{

/* Bind to port 80 (HTTP) with default IP address */

err = netconn_bind(conn, NULL, 80);

if (err == ERR_OK)

{

/* Put the connection into LISTEN state */

netconn_listen(conn);

while(1)

{

/* accept any incoming connection */

accept_err = netconn_accept(conn, &newconn);

if(accept_err == ERR_OK)

{

/* serve connection */

http_server_serve(newconn);

/* delete connection */

netconn_delete(newconn);

}

}

}

}

}

/**

* @brief Initialize the HTTP server (start its thread)

* @param none

* @retval None

*/

void http_server_netconn_init(void)

{

sys_thread_new('HTTP', http_server_netconn_thread, NULL, DEFAULT_THREAD_STACKSIZE, osPriorityAboveNormal);

}