uint8_t RNWK_OnPacketRx(RPHY_PacketDesc *packet) { RNWK_ShortAddrType addr; RMAC_MsgType type; addr = RNWK_BUF_GET_DST_ADDR(packet->phyData); if (addr==RNWK_ADDR_BROADCAST || addr==RNWK_GetThisNodeAddr()) { /* it is for me :-) */ type = RMAC_GetType(packet->phyData, packet->phySize); /* get the type of the message */ if (RMAC_MSG_TYPE_IS_ACK(type) && RMAC_IsExpectedACK(packet->phyData, packet->phySize)) { /* it is an ACK, and the sequence number matches. Mark it with a flag and return, as no need for further processing */ packet->flags |= RPHY_PACKET_FLAGS_IS_ACK; return ERR_OK; /* no need to process the packet further */ } else if (RMAC_MSG_TYPE_IS_DATA(type)) { /* data packet received */ if (RNWK_AppOnRxCallback!=NULL) { /* do we have a callback? */ #if RNET_CONFIG_USE_ACK if (RMAC_MSG_TYPE_REQ_ACK(type)) { (void)RNWK_SendACK(packet, RNWK_GetThisNodeAddr()); /* send ack message back */ } #endif return RNWK_AppOnRxCallback(packet); /* call upper layer */ } } else { return ERR_FAULT; /* wrong message type? */ } } return ERR_FAILED; }
uint8_t RNWK_OnPacketRx(RPHY_PacketDesc *packet) { RNWK_ShortAddrType addr; RMAC_MsgType type; uint8_t res; addr = RNWK_BUF_GET_DST_ADDR(packet->data); if (addr==RNWK_ADDR_BROADCAST || addr==RNWK_GetThisNodeAddr()) { /* it is for me :-) */ type = RMAC_GetType(packet->data, packet->dataSize); /* get the type of the message */ if (type==RMAC_MSG_TYPE_ACK && RMAC_IsExpectedACK(packet->data, packet->dataSize)) { /* it is an ACK, and the sequence number matches. Mark it with a flag and return, as no need for further processing */ packet->flags |= RPHY_PACKET_FLAGS_ACK; return ERR_OK; /* no need to process the packet further */ } else if (type==RMAC_MSG_TYPE_DATA) { /* data packet received */ if (RNWK_AppOnRxCallback!=NULL) { /* do we have a callback? */ res = RNWK_AppOnRxCallback(packet); /* call upper layer */ if (res==ERR_OK) { /* all fine, now send acknowledge back */ addr = RNWK_BUF_GET_SRC_ADDR(packet->data); /* who should receive the ack? */ RNWK_BUF_SET_DST_ADDR(packet->data, addr); /* destination address is from where we got the data */ return RMAC_SendACK(packet); /* send ack message back */ } } } else { return ERR_FAULT; /* wrong message type? */ } } return ERR_FAILED; }