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AF_DataRequest只有在返回afStatus_SUCCESS才会触发AF_DATA_CONFIRM_CMD么?

从协议栈的消息机制来看,AF_DataRequest并不是真正发送数据,只是把需要发送的数据放入到发送队列或者发送缓存中,由NWK层和MAC层来发送。

如果AF_DataRequest返回了非afStatus_SUCCESS的值,是否说明发送的数据没有到NWK?如果数据没有到达NWK,是否就不会产生AF_DATA_CONFIRM_CMD了?