這份講解超級詳細,忍不住就轉了……
第一個功能:協調器的組網,終端設備和路由設備發現網絡以及加入網絡
//第一步:Z-Stack 由 main()函數開始執行,main()函數共做了 2 件事:一是系統初始化,另外一件是開始執行輪轉查詢式操作系統
int main( void )
......
//第二步,進入 osal_init_system()函數,執行操作系統初始化
//第三步,進入osalInitTasks()函數,執行操作系統任務初始化
//當有按鍵按下的時候,產生一個系統消息
//第四步,進入ZDApp_init()函數,執行ZDApp層初始化
//The first step
//The third step,執行ZDOInitDevice()函數,執行設備初始化
.......
.......
}
//The fouth step,執行 ZDApp_NetWorkInit()函數
//The fifth step,轉到ZDApp_event_loop()函數
}
//The sixth step,執行ZDO_StartDevice()函數,啓動設備
......
}
}
......
}
//The seventh step,分兩種情況,1.協調器 2.路由器或終端設備
1)協調器
osal_set_event( ZDAppTaskID, ZDO_NETWORK_START ); //發送網絡啓動事件 到 ZDApp層,接着轉到ZDApp_event_loop()函數
......
}
......
}
......
}
2)路由器或終端設備
//The seventh step(終端設備), 當發現有網絡存在時,網絡層將給予 ZDO 層發現網絡反饋信息
{
.......
//把網絡發現這個反饋消息,發送到ZDA層,轉到 ZDApp_ProcessOSALMsg(),執行
......
case ZDO_NWK_DISC_CNF: // (終端設備),網絡發現響應。
//The ninth step,執行 ZDO_JoinConfirmCB()函數
......
}
......
......
在執行ZDApp_ProcessNetworkJoin()函數的時候,要分兩種情況,一種是終端設備,一種是路由器:
3)終端設備:
......
}
......
}
4)路由器:
......
......
......
UINT16 ZDApp_event_loop( uint8 task_id, UINT16 events )
}
.......
//並在網絡中的身份確定後產生的一個事件
......
}
}
//The ninth step,執行ZDO_UpdateNwkStatus()函數,完成網絡狀態更新
......
//The tenth step,執行zdoSendStateChangeMsg()函數
//ZDO_STATE_CHANGE_EVT事件處理函數。
......
//自此,協調器組網形成(終端設備成功加入網絡)
......
}
//第五步,//初始化玩系統任務事件後,正是開始執行操作系統,此時操作系統不斷的檢測有沒有任務事件發生,一旦檢測到有事件發生,就轉 //到相應的處理函數,進行處理。
第二個功能:設備間的綁定
-----------引用自藍天白雲
/*當我們按下sw2,即JoyStick控杆的右鍵時,節點發出終端設備綁定請求,因爲我們在SerialApp層,註冊過了鍵盤響應事件,所以,當我們按 下右鍵時,我們會在SerialApp_ProcessEvent()函數裏找到對應的鍵盤相應事件*/
UINT16 SerialApp_ProcessEvent( uint8 task_id, UINT16 events ) //當有事件傳遞到應用層的時候,執行此處
{
if ( events & SYS_EVENT_MSG ) // 有事件傳遞過來,故通過這個條件語句
......
case KEY_CHANGE: //鍵盤觸發事件
.......
}
void SerialApp_HandleKeys( uint8 shift, uint8 keys )
HalLedSet ( HAL_LED_4, HAL_LED_MODE_OFF );
// Initiate an End Device Bind Request for the mandatory endpoint
dstAddr.addr.shortAddr = 0x0000; // Coordinator 地址
ZDP_EndDeviceBindReq( &dstAddr, NLME_GetShortAddr(), //終端設備綁定請求
SerialApp_epDesc.endPoint,
SERIALAPP_MAX_CLUSTERS,
SERIALAPP_MAX_CLUSTERS,
HalLedSet ( HAL_LED_4, HAL_LED_MODE_OFF );
// Initiate a Match Description Request (Service Discovery)
dstAddr.addr.shortAddr = NWK_BROADCAST_SHORTADDR;
ZDP_MatchDescReq( &dstAddr, NWK_BROADCAST_SHORTADDR, //描述符匹配請求 這也是兩不同匹配方式,使用的按鍵不同
ZDP_EndDeviceBindReq( &dstAddr, //目的地址設爲0x0000;
SERIALAPP_PROFID,//Profile ID
(cId_t *)SerialApp_ClusterList, //輸入簇列表
(cId_t *)SerialApp_ClusterList,//輸出簇列表
該函數實際調用無線發送函數將綁定請求發送給協調器節點:默認clusterID爲End_Device_Bind_req,最後通過AF_DataRequest()發送出去.
fillAndSend( &ZDP_TransID, dstAddr, End_Device_Bind_req, len );
(uint16)(len+1), (uint8*)(ZDP_TmpBuf-1),
transSeq, ZDP_TxOptions, AF_DEFAULT_RADIUS );
這個信息會傳送到ZDO層,在ZDO層的事件處理函數中,調用ZDApp_ProcessOSALMsg( (osal_event_hdr_t *)msg_ptr );
UINT16 ZDApp_event_loop( byte task_id, UINT16 events )
uint8 *msg_ptr;
if ( events & SYS_EVENT_MSG )
while ( (msg_ptr = osal_msg_receive( ZDAppTaskID )) )
ZDApp_ProcessOSALMsg( (osal_event_hdr_t *)msg_ptr );
// Release the memory
osal_msg_deallocate( msg_ptr );
// Return unprocessed events
void ZDApp_ProcessOSALMsg( osal_event_hdr_t *msgPtr )
// Data Confirmation message fields
byte sentEP; // This should always be 0
byte sentStatus;
afDataConfirm_t *afDataConfirm;
switch ( msgPtr->event )
case AF_INCOMING_MSG_CMD:
ZDP_IncomingData( (afIncomingMSGPacket_t *)msgPtr );
在ZDP_IncomingData( (afIncomingMSGPacket_t *)msgPtr );函數中
void ZDP_IncomingData( afIncomingMSGPacket_t *pData )
uint8 handled;
zdoIncomingMsg_t inMsg;
//解析clusterID這個消息
inMsg.srcAddr.addrMode = Addr16Bit;
inMsg.srcAddr.addr.shortAddr = pData->srcAddr.addr.shortAddr;
inMsg.wasBroadcast = pData->wasBroadcast;
inMsg.clusterID = pData->clusterId; //這個clusterID,在這裏指的是,終端設備發送過來的End_Device_Bind_req這個消息
inMsg.SecurityUse = pData->SecurityUse;
inMsg.asduLen = pData->cmd.DataLength-1;
inMsg.asdu = pData->cmd.Data+1;
inMsg.TransSeq = pData->cmd.Data[0];
handled = ZDO_SendMsgCBs( &inMsg );
MT_ZdoRsp( &inMsg );
while ( zdpMsgProcs[x].clusterID != 0xFFFF )
if ( zdpMsgProcs[x].clusterID == inMsg.clusterID ) //在zdpMsgProcs[]中,查找,看看有沒有跟End_Device_Bind_req相匹配的描述符。
zdpMsgProcs[x].pFn( &inMsg );
// Handle unhandled messages
if ( !handled )
ZDApp_InMsgCB( &inMsg );
因爲ZDO信息處理表zdpMsgProcs[ ]沒有對應的End_Device_Bind_req簇,因此沒有調用ZDO信息處理表中的處理函數,但是前面的ZDO_SendMsgCBs()會把這個終端設備綁定請求發送到登記過這個ZDO信息的任務中去。那這個登記註冊的程序在哪裏呢?
對於協調器來說,由於在void ZDApp_Init( byte task_id )函數中調用了ZDApp_RegisterCBs();面的函數。進行註冊了終端綁定請求信息。
#if defined ( ZDO_IEEEADDR_REQUEST ) || defined ( REFLECTOR )
ZDO_RegisterForZDOMsg( ZDAppTaskID, IEEE_addr_rsp );
#if defined ( ZDO_NWKADDR_REQUEST ) || defined ( REFLECTOR )
ZDO_RegisterForZDOMsg( ZDAppTaskID, NWK_addr_rsp );
ZDO_RegisterForZDOMsg( ZDAppTaskID, Bind_rsp );
ZDO_RegisterForZDOMsg( ZDAppTaskID, Unbind_rsp );
ZDO_RegisterForZDOMsg( ZDAppTaskID, End_Device_Bind_req );
ZDO_RegisterForZDOMsg( ZDAppTaskID, Bind_req );
ZDO_RegisterForZDOMsg( ZDAppTaskID, Unbind_req );
UINT16 ZDApp_event_loop( byte task_id, UINT16 events )
uint8 *msg_ptr;
if ( events & SYS_EVENT_MSG )
while ( (msg_ptr = osal_msg_receive( ZDAppTaskID )) )
ZDApp_ProcessOSALMsg( (osal_event_hdr_t *)msg_ptr );
// Release the memory
osal_msg_deallocate( msg_ptr );
// Return unprocessed events
在這裏調用函數ZDApp_ProcessOSALMsg( (osal_event_hdr_t *)msg_ptr );在這個函數中我們可以看到對ZDO_CB_MSG事件的處理
void ZDApp_ProcessOSALMsg( osal_event_hdr_t *msgPtr )
// Data Confirmation message fields
byte sentEP; // This should always be 0
byte sentStatus;
afDataConfirm_t *afDataConfirm;
switch ( msgPtr->event )
// Incoming ZDO Message
case AF_INCOMING_MSG_CMD:
ZDP_IncomingData( (afIncomingMSGPacket_t *)msgPtr );
case ZDO_CB_MSG:
ZDApp_ProcessMsgCBs( (zdoIncomingMsg_t *)msgPtr );
調用ZDApp_ProcessMsgCBs()函數。在這個函數中根據ClusterID(這裏是 End_Device_Bind_req)選擇相對應的匹配描述符處理函數,
.......
ZDEndDeviceBind_t bindReq;
ZDO_ParseEndDeviceBindReq( inMsg, &bindReq ); //解析綁定請求信息
ZDO_MatchEndDeviceBind( &bindReq ); //然後向發送綁定請求的節點發送綁定響應消息:
// Freeing the cluster lists - if allocated.
if ( bindReq.numInClusters )
osal_mem_free( bindReq.inClusters );
if ( bindReq.numOutClusters )
osal_mem_free( bindReq.outClusters );
void ZDO_MatchEndDeviceBind( ZDEndDeviceBind_t *bindReq )
zAddrType_t dstAddr;
uint8 sendRsp = FALSE;
uint8 status;
// Is this the first request? 接收到的是第一個綁定請求
if ( matchED == NULL )
// Create match info structure 創建匹配信息結構體
matchED = (ZDMatchEndDeviceBind_t *)osal_mem_alloc( sizeof ( ZDMatchEndDeviceBind_t ) ); //分配空間
if ( matchED )
// Clear the structure 先進行清除操作
osal_memset( (uint8 *)matchED, 0, sizeof ( ZDMatchEndDeviceBind_t ) );
// Copy the first request's information 複製第一個請求信息
if ( !ZDO_CopyMatchInfo( &(matchED->ed1), bindReq ) ) //複製不成功後
status = ZDP_NO_ENTRY;
sendRsp = TRUE;
status = ZDP_NO_ENTRY;
sendRsp = TRUE;
if ( !sendRsp ) //分配空間成功 ,複製數據結構成功
// Set into the correct state 設置正確的設備狀態
matchED->state = ZDMATCH_WAIT_REQ;
ZDO_EndDeviceBindMatchTimeoutCB );
matchED->state = ZDMATCH_SENDING_BINDS; //狀態爲綁定中
// Copy the 2nd request's information 拷貝第2個請求信息結構
if ( !ZDO_CopyMatchInfo( &(matchED->ed2), bindReq ) ) //拷貝不成功
status = ZDP_NO_ENTRY;
sendRsp = TRUE;
// Make a source match for ed1
matchED->ed1numMatched = ZDO_CompareClusterLists(
matchED->ed1.numOutClusters, matchED->ed1.outClusters,
matchED->ed2.numInClusters, matchED->ed2.inClusters, ZDOBuildBuf );
if ( matchED->ed1numMatched ) //如果有返回ed1相匹配的簇
// Save the match list 申請空間保存相匹配的簇列表
matchED->ed1Matched= osal_mem_alloc( (short)(matchED->ed1numMatched * sizeof ( uint16 )) );
if ( matchED->ed1Matched ) //分配成功
osal_memcpy(matchED->ed1Matched,ZDOBuildBuf, (matchED->ed1numMatched * sizeof ( uint16 )) );
else //內存空間分配不成功
status = ZDP_NO_ENTRY;
sendRsp = TRUE;
// Make a source match for ed2 以ed2爲源
matchED->ed2numMatched = ZDO_CompareClusterLists(
matchED->ed2.numOutClusters, matchED->ed2.outClusters,
matchED->ed1.numInClusters, matchED->ed1.inClusters, ZDOBuildBuf );
if ( matchED->ed2numMatched ) //如果匹配成功
// Save the match list 保存匹配的簇列表
matchED->ed2Matched = osal_mem_alloc( (short)(matchED->ed2numMatched * sizeof ( uint16 )) );
if ( matchED->ed2Matched )
osal_memcpy( matchED->ed2Matched, ZDOBuildBuf, (matchED->ed2numMatched * sizeof ( uint16 )) );
// Allocation error, stop
status = ZDP_NO_ENTRY;
sendRsp = TRUE;
if ( (sendRsp == FALSE) && (matchED->ed1numMatched || matchED->ed2numMatched) )
// Do the first unbind/bind state 發送響應信息給兩個設備
ZDMatchSendState( ZDMATCH_REASON_START, ZDP_SUCCESS, 0 );
status = ZDP_NO_MATCH;
sendRsp = TRUE;
if ( sendRsp ) //如果沒有相匹配的或匹配不成功
// send response to this requester 發送匹配請求響應
dstAddr.addrMode = Addr16Bit; //設置目的地址是16位的短地址
dstAddr.addr.shortAddr = bindReq->srcAddr;
//發送綁定終端響應函數status = ZDP_NO_MATCH;
ZDP_EndDeviceBindRsp( bindReq->TransSeq, &dstAddr, status, bindReq->SecurityUse );
if ( matchED->state == ZDMATCH_SENDING_BINDS )
// send response to first requester
dstAddr.addrMode = Addr16Bit;
dstAddr.addr.shortAddr = matchED->ed1.srcAddr;
ZDP_EndDeviceBindRsp( matchED->ed1.TransSeq, &dstAddr, status, matchED->ed1.SecurityUse );
// Process ended - release memory used
ZDO_RemoveMatchMemory();
uint8 ZDMatchSendState( uint8 reason, uint8 status, uint8 TransSeq )
// Send the response messages to requesting devices
// send response to first requester 發送響應信息給第一個請求終端,
dstAddr.addr.shortAddr = matchED->ed1.srcAddr;
ZDP_EndDeviceBindRsp( matchED->ed1.TransSeq, &dstAddr, rspStatus, matchED->ed1.SecurityUse );
// send response to second requester 發送響應信息給第二請求終端
if ( matchED->state == ZDMATCH_SENDING_BINDS )
dstAddr.addr.shortAddr = matchED->ed2.srcAddr;
ZDP_EndDeviceBindRsp( matchED->ed2.TransSeq, &dstAddr, rspStatus, matchED->ed2.SecurityUse );
// Process ended - release memory used
ZDO_RemoveMatchMemory();
return ( TRUE );
由於終端節點在 SerialApp.c 中層註冊過 End_Device_Bind_rsp 消息,因此當接收到協調器節點發來的綁定響應消息將交由 SerialApp 任務事件處理函數處理:
UINT16 SerialApp_ProcessEvent( uint8 task_id, UINT16 events )
if ( events & SYS_EVENT_MSG )
afIncomingMSGPacket_t *MSGpkt;
while ( (MSGpkt = (afIncomingMSGPacket_t *)osal_msg_receive(
SerialApp_TaskID )) )
switch ( MSGpkt->hdr.event )
SerialApp_ProcessZDOMsgs( (zdoIncomingMsg_t *)MSGpkt );
break;
static void SerialApp_ProcessZDOMsgs( zdoIncomingMsg_t *inMsg )
switch ( inMsg->clusterID )
case End_Device_Bind_rsp:
if ( ZDO_ParseBindRsp( inMsg ) == ZSuccess )
// Light LED
HalLedSet( HAL_LED_4, HAL_LED_MODE_ON );
// Flash LED to show failure
HalLedSet ( HAL_LED_4, HAL_LED_MODE_FLASH );
第三個功能:實現兩個節點間的串口通信
“串口終端1”的數據,如何被“節點 1”所接收,並且發送出去的?
串口數據==>DMA接收==>主循環中通過SerialApp_CallBack 查詢==>從 DMA獲取併發送到空中。
具體流程如下:
......
......
}
}
節點2 在收到空中的信號後,如何傳遞給與其相連的串口終端?
......
while ( (MSGpkt = (afIncomingMSGPacket_t *)osal_msg_receive( SerialApp_TaskID )) )
......
case AF_INCOMING_MSG_CMD: //在這個實驗中,使用串口通訊時,觸發的事件,從空中捕獲到信號。
......
}
}
}
......
}
}
......
if ( events & SERIALAPP_RESP_EVT ) //串口響應事件,表示成功接受來自節點1的數據,
......
節點1,接收到來自節點2的response。
......
while ( (MSGpkt = (afIncomingMSGPacket_t *)osal_msg_receive( SerialApp_TaskID )) )
......
case AF_INCOMING_MSG_CMD: //在這個實驗中,使用串口通訊時,觸發的事件,從空中捕獲到信號。
......
}
}
}
SERIALAPP_CLUSTERID2代表接收到發送成功的response,取消自動重發,如果不,自動重發。
......