Re: [lwip-users] tcpip_thread shouldn't block

[address@hidden]

gregoryhouse wrote:
> Hi,
>
> When using RAW API we can't execute a blocking code in callback functions. But 
> what does it mean exactly? Can I, for example, execute code that writes data to 
> external eeprom and then waits 10ms (this will block tcpip_thread for that 
> time)?
>   

Not blocking the tcpip_thread is needed to guarantee a specific response 
time. If it's no problem for your application to delay all 
received/transmitted packets by 10ms, then you can do the call.

The stack itself does not care about the delay very much, what will 
happen is that timers might be executed a little later, but as long as 
thats < around 100ms, you probably won't notice it.

Simon