> -----Message d'origine----- > Hello, > I have problems with IGMP messages sending. > Situation: > I am using Altera FPGA with Nios II software CPU running at 62.5MHz. > LwIP 1.4.0 > NO_SYS_NO_TIMERS = 1, so no RTOS > I am totally lost, what's happening here, the stack even doesn't send > all the join messages. Sometimes it joins all the groups, but later I > get timeout, so the stream stops. Sometimes after another 2 minutes, > the stack rejoins the group, but timeout accours on other groups. > Maybe someone could help me out here? Maybe I am out of buffers or > doing something too fast?
Hi, LwIP 1.4.0 IGMP works for me, at least with an RTOS. After quick search in the sources, you can find that IGMP processing needs igmp_tmr() to be called every IGMP_TMR_INTERVAL ms (default is 100). (joins and replies are not send immediately but with random relay) This is handled automatically by the new system timeouts management: sys_timeouts_init() and igmp_timer() in timer.c, which are compiled when LWIP_TIMERS != 0. In timers.h: #define LWIP_TIMERS (!NO_SYS || (NO_SYS && !NO_SYS_NO_TIMERS)) With NO_SYS==1, you have two options: 1. go back to defaut, #define NO_SYS_NO_TIMERS 0, you must provide sys_now() and call sys_check_timeouts() regularly. 2. keep #define NO_SYS_NO_TIMERS 1, but you must call igmp_tmr() yourself every IGMP_TMR_INTERVAL ms. -- Stephane Lesage _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
