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File upload through HTTP problem

Hello,

I'm trying to write a firmware update through Web server on the board AT91SAM9620. For this I'm using a form with ENCTYPE="multipart/form-data" and a function cgi_process_data(). Very often the file has been damaged. (crc32 checking don't pass) It looks like that the file uploading session has been terminated incorrect (the web server does not reloads the page.) I've tried with IE, FireFox and Chrome a result is the same. I've noticed that with FireFox these problem is more often. The file size is about 200KB. Using debug version TCP/IP library in terminal window appear:"TCP ERR: Out of range sequence number received" at the time of the file is uploading. I think that these errors is the reason of file damage.
I'm using RL-ARM v4.12
Has anyone tried to send the file through http on the board AT91SAM9620 ?
How can I fix this problem?
Any ideas please?

Best regards
Taris T

Parents

0 Marco Zimmermann over 14 years ago in reply to Franc Urbanc

Hi Franc,

what else could it be?
I have only two tasks running (Keil RTX) und running the ethernet in interrupt mode (no polling).
Task Ethernet:

__task void _task_ethernet      (void)
{
        if( ethernet_init () != ETHERNET_RET_OK )
        {
                _DBG(EMERGENCY,"Ethernet init failed - Deleting _task_ethernet");
                os_tsk_delete_self();
        }

        while(1)
        {
                main_TcpNet ();
                os_tsk_pass();
        }
}

Task TCP_TICK:

__task void _task_tcp_tick      (void)
{
        os_itv_set (100);

        while(1)
        {
                timer_tick ();
                os_itv_wait ();
        }
}

The function that processes the request is empty:

void cgi_process_data (U8 code, U8 *dat, U16 len)
{
        /* This function is called by HTTP server to process the returned Data    */

        switch (code)
        {
        case 0:
                /* Url encoded form data received. */
                break;

        case 1:
                /* Filename for file upload received as encoded by the browser. */
                return;

        case 2:
                /* File content data received. Write data to a file. */
                return;

        case 3:
                /* File upload finished. Close a file. */
                return;

        case 4:
                /* XML encoded content type, last packet. */
                return;

        case 5:
                /* XML encoded as under 4, but with more to follow. */
                return;

        default:
                /* Ignore all other codes. */
                return;
        }
        return;
}

The tick interval in net_config.c is defined to 100ms:

#define TICK_INTERVAL  100

even with this configuration I get the RX-FIFO overflow. Maybe the 120us per packet are still to fast for the cortex? Do you have any idea what could cause this problem? Maybe I messed up something in the configuration of the cortex?

Regards,
Marco

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