hi,everyone,
The enddevice send message to coordinator with afAddrMode_t equal to Addr16Bit,the coordinator will send back a message with in unicast mode once receive the message.To my confusion,sometimes the coordinator send message to enddevice the value of afAddrMode_t change from Addr16Bit to AddrBroadcast with shortAddr equal to 0xfffd.The enddevice can not get the broadcast because it fall in sleep at that time.
thanks!