The way I am using select() the task will block. Meanwhile the scheduler will continue running other tasks. No starvation will happen. As soon as incoming data arrives the task will become "ready" and the scheduler will run it at next occasion.
-----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]]im Auftrag von Oscar F Gesendet: Freitag, 4. September 2009 13:34 An: Mailing list for lwIP users Betreff: Re: [lwip-users] help with socket!! Another question, if the protocol is TCP, can i use lwip_select to block the task to wait for a data? if the task is blocked, the other task in the system can be runned? thank again Oscar On Fri, Sep 4, 2009 at 1:24 PM, Oscar F <[email protected]> wrote: Thanks Mathias, i´ll see your file. I don´t know the protocol because i´ve readed the customer documentation and it doesn´t say anything about protocol. " links connection process shall be initiated by the PC unit: it will connect sequentially (one after the other) all the logical links. At power-on/reset, the EVK-1100 Unit shall first create the sockets in order to be ready for accepting a connection in all of them." the connection are permanent maybe will be TCP no? because then there is a diconnect process. i´ll need 8 socket TCP connection permanent , do you think the same? Regards Oscar On Fri, Sep 4, 2009 at 1:04 PM, Mathias Zenger <[email protected]> wrote: What protocol do you use UDP or TCP? I just implemented a task for the same system (EVK1100/FreeRTOS/lwIP). It receives UDP datagrams from a multicast address on different ports. I attached the file to show you how select() can be used. For answering the requests you could write a second task which gets woken by the receiver task (e.g. use queues to signalize the request). Regards, Mathias -----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]]im Auftrag von Oscar F Gesendet: Freitag, 4. September 2009 12:28 An: Mailing list for lwIP users Betreff: [lwip-users] help with socket!! Hello everybody, my customer said me that i need to create 8 socket of communication with diferent port. There will be 8 logical links with a Port number associated: - RQ1 Port Number = 1500H (= 6376 dec) - RQ2 Port Number = 1501H (= 6377 dec) - RQ3 Port Number = 1502H (= 6378 dec) - RP1- Port Number = 1600H (= 6632 dec) - RP2-Port Number = 1601H (= 6633 dec) - RP3-Port Number = 1602H (= 6634 dec) - RP4-Port Number = 1603H (= 6635 dec) - RP5-Port Number = 1604H (= 6636 dec) Each answer and request goes form diferent socket. I have the evk1100 with avr32, and i use the lwip 1.3.0 with free RTOS port to this micro. Can i create 8 socket, and wait for request of them and answed for other ? in the program run other task, do you recommended use the lwip_select function to block for request, and the task state will be blocked and other task can be runned? Thank you for all Regards Oscar _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
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