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;
}
