Request-Respond commnication of Jennic WSN.
1. Register Simple Description with one Input Cluster at the Receiver point.
2. Use afdeDataRequest with transaction.uFrame.sKvp.eCommandTypeID = SET_ACKNOWLEDGMENT, ACKNOWLEDGED_TRANSMISSION(OR with APS_TXOPTION_NONE) param and at the Sender point.
3. Make sure JZA_bAfKvpObject return TRUE, at the Receiver point.
When the KVP message which the Sender sent, arrived the Receiver point, a response message will be send to the Sender by the protocol stack automatically, to tell the Sender the KVP message has been received by the Receiver.
--------------------------------------------------------------Code---------------------------------------------------------------------------------------------
Sender point:
PRIVATE void vSendFrame(void)
{
uint8 u8SrcEP = ROUTE_ENDPOINT; APS_Addrmode_e eAddrMode; uint16 u16DestAddr; uint8 u8DestEndpoint; uint8 transCount = 1; int i = 0; PRIVATE AF_Transaction_s Transaction; PRIVATE uint8 au8Afdu[10];
/*for (i = 0; i < 10; i++)
{ au8Afdu[i] = i;
}*/ for (i = 10; i > 0; i--) { au8Afdu[10-i] = i; } /* specify destination node short address and endpoint */ eAddrMode = APS_ADDRMODE_SHORT; u16DestAddr = 0x0000; u8DestEndpoint = COORDINATOR_ENDPOINT; /* specify the transaction sequence number */ Transaction.u8SequenceNum = 0; /* We want to send data to an input, so use the SET command type */ Transaction.uFrame.sKvp.eCommandTypeID = SET_ACKNOWLEDGMENT; Transaction.uFrame.sKvp.eAttributeDataType = KVP_CHARACTER_STRING; /* use the DATA attribute for a Data cluster, as specified in the profile defined for this application */ Transaction.uFrame.sKvp.u16AttributeID = CLUSTERIDT_DATA; Transaction.uFrame.sKvp.eErrorCode = KVP_SUCCESS; memcpy(&Transaction.uFrame.sKvp.uAttributeData.CharacterString.au8CharacterData, au8Afdu, 10); Transaction.uFrame.sKvp.uAttributeData.CharacterString.u8CharacterCount = 10; /* send KVP data request */ afdeDataRequest(eAddrMode, u16DestAddr, u8DestEndpoint, u8SrcEP, PROFILE_ID, CLUSTERID, AF_KVP, transCount, &Transaction, ACKNOWLEDGED_TRANSMISSION, //APS_TXOPTION_NONE, ENABLE_ROUTE_DISCOVERY, 0); static bool bSendSigned = TRUE; vLedControl(1, bSendSigned); bSendSigned = !bSendSigned; return;
}Get the Respond:
/**************************************************************************** * * NAME: JZA_vAfKvpResponse * * DESCRIPTION: * Called after a KVP transaction with acknowledgement request, when the * acknowledgement arrives. * * PARAMETERS: Name RW Usage * srcAddressMod R Address of sender device * transactionSequenceNum R KVP transaction number * commandTypeIdentifier R KVP command type * dstEndPoint R Endpoint at receiver * clusterID R Cluster ID * attributeIdentifier R KVP attribute ID * errorCode R Result code * afduLength R Length of payload data * pAfdu R Payload data array * ****************************************************************************/PUBLIC void JZA_vAfKvpResponse( APS_Addrmode_e eAddrMode, uint16 u16AddrSrc, uint8 u8SrcEP, uint8 u8LQI, uint8 u8DstEP, uint8 u8ClusterID, AF_Transaction_s *puTransactionInd){ static bool bResponseSigned = TRUE; vLedControl(0, bResponseSigned); bResponseSigned = !bResponseSigned; return;}Receiver point:
Register simple description.
PRIVATE void vAddDesc(void){ /* Controller has 1 endpoints, with 1 input and 1 output clusters */ uint8 u8DeviceVer = 0x00; uint8 u8Flags = 0x00; uint8 u8EndPoint = COORDINATOR_ENDPOINT; uint16 u16DeviceId = 0x0000; /* use the same cluster ID for the input and output clusters. This means that the output cluster from one node will match the input cluster of the other node */ uint8 u8InputClusterCnt = 1; uint8 au8InputClusterList[] = {CLUSTERID}; uint8 u8OutputClusterCnt = 0; uint8 au8OutputClusterList[] = {};//{CLUSTERID}; (void)afmeAddSimpleDesc(u8EndPoint, PROFILE_ID, u16DeviceId, u8DeviceVer, u8Flags, u8InputClusterCnt, au8InputClusterList, u8OutputClusterCnt, au8OutputClusterList);}Recv KVP message:
/**************************************************************************** * * NAME: JZA_eAfKvpObject * * DESCRIPTION: * Called when a KVP transaction has been received with a matching endpoint. * * PARAMETERS: Name RW Usage * afSrcAddr R Address of sender device * u8DstEndpoint R Endpoint at receiver * pu8ClusterId R Pointer to cluster ID * eCommandTypeId R KVP command type * u16AttributeId R KVP attribute ID * pu8AfduLength R Pointer to length of data * pu8Afdu R Data array * * RETURNS: * AF_ERROR_CODE * ****************************************************************************/PUBLIC bool_t JZA_bAfKvpObject(APS_Addrmode_e eAddrMode, uint16 u16AddrSrc, uint8 u8SrcEP, uint8 u8LQI, uint8 u8DstEP, uint8 u8ClusterId, uint8 *pu8ClusterIDRsp, AF_Transaction_s *puTransactionInd, AF_Transaction_s *puTransactionRsp){ uint8 u8Length; uint8 *pu8Afdu; static bool bRecvFlag = TRUE; bool_t bReturnVal = FALSE; if (puTransactionInd->uFrame.sKvp.eCommandTypeID == SET_ACKNOWLEDGMENT) { bReturnVal = TRUE; } // check command frame is valid and for correct endpoint if ( (eAddrMode != APS_ADDRMODE_SHORT) || (u8DstEP != COORDINATOR_ENDPOINT)) { puTransactionRsp->uFrame.sKvp.eErrorCode = KVP_INVALID_ENDPOINT; return bReturnVal; } // only accept SET commands if ( (puTransactionInd->uFrame.sKvp.eCommandTypeID != SET) && (puTransactionInd->uFrame.sKvp.eCommandTypeID != SET_ACKNOWLEDGMENT)) { puTransactionRsp->uFrame.sKvp.eErrorCode = KVP_INVALID_COMMAND_TYPE; return bReturnVal; } u8Length = puTransactionInd->uFrame.sKvp.uAttributeData.CharacterString.u8CharacterCount; pu8Afdu = puTransactionInd->uFrame.sKvp.uAttributeData.CharacterString.au8CharacterData; // Extract data and send to UART if (puTransactionInd->uFrame.sKvp.u16AttributeID == CLUSTERIDT_DATA) { vLedControl(1, bRecvFlag); bRecvFlag = !bRecvFlag; vSerial_Send(pu8Afdu, u8Length); puTransactionRsp->uFrame.sKvp.eErrorCode = KVP_SUCCESS; } else { puTransactionRsp->uFrame.sKvp.eErrorCode = KVP_UNSUPPORTED_ATTRIBUTE; } return bReturnVal;}--------------------------------------------------
Fine day!