HTTP server busy?

Hi Jan,


You supposed to not to call any simplelink host api (in your case sl_FsWrite) from simplelink async event handler as it will try to lock a object that already locked by host callback caller function.


Regards,
Aashish

Hi Aashish,
thank you. OK, I can understand it. Please, can I find out if the object is locked? Problem is, that the object is locked beyond event handler. But how long? May be, some other events are pending. But I would like to know, when I can use SL for writing to SFLASH. I do not use OS, so I have sl_Task in main loop.

Thanks a lot.
Jan

Hi Jan,

Object is locked till control return back from event handler. We suggest you to have a global buffer to copy data in event handler for temporary and signal to main task before returning from event handler. In main task check for signal. If signal to write then store in file. Below is pseudo code.

dataAvailable = 0;

SimpleLinkHttpServerCallback ()
{

        copy data to a global buffer
        dataAvailable = 1;

}

main()
{
        while(1)
        {
                if(dataAvailable)
                {
                        write to a file
                        dataAvailable = 0;
                }
                else
                {
                        other operation
                }
        }
}

Regards,

Aashish

Hi Aashish,
thanks.
I have done it this way, but problem is, that SimpleLinkHttpServerCallback is called several times - for each token once. At first, POST tokens are handled, then GET tokens. I have experiences that I have to wait cca 300 to 500 ms after last callback function call and after that time I can write to SFLASH without problem.
Should be good to have some flags: SimpleLink Ready, SimpleLinkBusy.
I will continue to research.

Jan

Hi Jan,

We believe your issue might be related to a bug that was found recently in which ,sometimes, host driver API calls will get stuck if they are being called during HTTP transactions.
This issue was fixed and will be released in the next service-pack which will be released soon.

Thanks,
Alon

Hi Alon,

what about a new service pack you talked about in recent answer.

Thanks,
Jan

Hi Jan,

I am closing the thread, if issue still exist please open a new thread and add a link to this one for reference.

Thanks,
Alon