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RL-TCPnet: UDP send/receive from seperate RTX task

Hello,

I'm using RTX + RL-TCPnet on an LPC1788 dev board.

I have the web server enabled and this is working great. In a separate task I have implemented a UDP protocol.

Nothing happens until the following sequence occurs:

All running fine.
UDP message received and validated in dedicated task.
UDP reply sent.
System Hard_faults with an INVPC flag set.

If I receive a message that does not get a reply nothing happens and I can keep receiving.

Is there any reason I would not be able to send and receive UDP packets from a task other than the main_TcpNet task?

Thanks.

Parents

0 @Marc Crandall over 14 years ago in reply to Ryan Conlon

In my 'network' task I have additional tick handlers:

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

Than in 'other_custom_tick()' I do my non-blocking UDP send receive:

uint16_t udp_callback(uint8_t socket, uint8_t *remip, uint16_t port, uint8_t *buf, uint16_t len)
{
    /* This function is called when UDP data has been received. */

    if(socket == my_socket())
    {
        if(port == my_get_port())
        {
            if(len <= MAX_MPDU)
            {
                //tsk_lock();
                memcpy(rx_buff, buf, len);
                memcpy(rx_ip_address, remip, 4);
                cc_len = datalink_receive(&src, &rx_buff[0], MAX_MCC, 1000);  //!\todo define proper timeout somewhere
                //tsk_unlock();
            }
        }
    }

    return (0);
}


void other_custom_tick(void)
{
    /* process */
    if(cc_len)
    {
       cc_handler(&src, cc_start, cc_len);
        cc_len = 0;
    }
}

Reply

0 @Marc Crandall over 14 years ago in reply to Ryan Conlon

In my 'network' task I have additional tick handlers:

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

Than in 'other_custom_tick()' I do my non-blocking UDP send receive:

uint16_t udp_callback(uint8_t socket, uint8_t *remip, uint16_t port, uint8_t *buf, uint16_t len)
{
    /* This function is called when UDP data has been received. */

    if(socket == my_socket())
    {
        if(port == my_get_port())
        {
            if(len <= MAX_MPDU)
            {
                //tsk_lock();
                memcpy(rx_buff, buf, len);
                memcpy(rx_ip_address, remip, 4);
                cc_len = datalink_receive(&src, &rx_buff[0], MAX_MCC, 1000);  //!\todo define proper timeout somewhere
                //tsk_unlock();
            }
        }
    }

    return (0);
}


void other_custom_tick(void)
{
    /* process */
    if(cc_len)
    {
       cc_handler(&src, cc_start, cc_len);
        cc_len = 0;
    }
}

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