K60的以太网，怎样设置组播模式？

肖久

以MQX4.1的驱动为基础，想用setsockopt()函数来使socket支持组播，但找不到相关的参数，请问，如何设置其组播功能呢？谢谢！

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技术范儿

跟芯片和操作系统没关系，看下TCP/IP的协议栈里怎么做的吧

小恩GG

Join a multicast group

uint32_t   sock;struct ip_mreq  group;
group.imr_multiaddr.s_addr = multicast_ip_address;
group.imr_interface.s_addr = local_ip_address;
error = setesockopt(sock. SOL_IGMP, RTCS_SO_IGMP_ADD_MEMBERSHIP, &group, sizeof(group));


Leave a multicast group
uint32_t   sock;struct ip_mreq  group;
group.imr_multiaddr.s_addr = multicast_ip_address;
group.imr_interface.s_addr = local_ip_address;
error = setesockopt(sock. SOL_IGMP, RTCS_SO_IGMP_DROP_MEMBERSHIP, &group, sizeof(group));

详细情况 楼主看看MQX_RTCS_User_Guide.pdf吧