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電路如圖所示：

其中控制(zhi)芯片使(shi)用SAM3S4B,通(tong)過SPI格(ge)式（單一(yi)(yi)的SAM3S4B為(wei)主端，AT86RE231為(wei)從端）與AT86RF231進(jin)行通(tong)訊，AT86RF231是一(yi)(yi)款工(gong)業(ye)級，低電壓供電，超低功耗，方便操(cao)作(zuo)，遵(zun)循IEEE802.15.4-2006 硬件標準。AT86RF231將控制(zhi)信號(hao)轉換為(wei)zigbee模式的差分對信號(hao)，通(tong)過2.45Ghz的諧波(bo)(bo)濾波(bo)(bo)器2450FB15L0001濾波(bo)(bo)后接(jie)入(ru)天線與其余zigbee端點進(jin)行通(tong)訊，2450FB15L0001主要(yao)是對接(jie)受到得zigbee信號(hao)進(jin)行濾波(bo)(bo)。

Zigbee框架下(xia)編譯程序，需要進行些簡單的設置(zhi)，

因(yin)為處與zigbee協議(yi)棧框架中，部分源碼被atmel，封(feng)裝(zhuang)起來，在(zai)man函數(shu)中，SYS_sysinit();系統(tong)初始化(hua)給出(chu).h文件(jian)，而沒有具(ju)體的(de)C代碼。這(zhe)意味ZIGBEE的(de)具(ju)體結構(gou)核心部分不(bu)是開(kai)源的(de)。實際(ji)中SYS_sysinit()在(zai)libBc_All_At91sam3s4c_Rf231_Iar.a中，該文件(jian)被封(feng)裝(zhuang)起來。

其(qi)中，對(dui)(dui)bitcloud編譯生成(cheng)的是libHAL_Sam3sEkRf2xx_At91sam3s4c_64Mhz_Iar.a。 這里面(mian)即便被封住，我們可(ke)以進入bitcloud源碼內，解(jie)讀代(dai)(dai)碼，如(ru)WTD操作，HAL_InstallInterruptVector（），TimeTick_Configure（）還是可(ke)以進行代(dai)(dai)碼解(jie)讀的。那對(dui)(dui)zigbee格式下(xia)的函數應該怎樣跟蹤解(jie)析(xi)代(dai)(dai)碼：例如(ru)pio.h中，PIO_Configure（）；無法看(kan)到C代(dai)(dai)碼的實現過(guo)程。可(ke)以鼠(shu)標右(you)擊pio.h文(wen)(wen)(wen)件(jian)（見下(xia)圖(tu)1），open containing folder，打(da)開文(wen)(wen)(wen)件(jian)夾，找到include中的pio.h文(wen)(wen)(wen)件(jian)，可(ke)以推(tui)測出點C文(wen)(wen)(wen)件(jian)如(ru)果有，應該存在于source中。進行代(dai)(dai)碼解(jie)讀。

圖1

在下(xia)面歷程(cheng)中(zhong)，給出協調器和(he)節(jie)點的實現。

協調器部分程序：

int main(void)
        {
                //初始化，相關系統配置
                SYS_SysInit();
                ..
                ..
                for(;;)
                {
                        //數據處理
                        ..
                        ..
                        SYS_RunTask();
                }
         }

SYS_SysInit();函(han)數是系統的(de)函(han)數，用來初始化系統的(de)硬(ying)件;

SYS_RunTask();是調用(yong)(yong)zigbee的(de)入口函數，會調用(yong)(yong)BitCloud協議棧(zhan)中的(de)用(yong)(yong)戶(hu)應(ying)用(yong)(yong)程(cheng)序(xu)，即APL_TaskHandler()；

voidAPL_TaskHandler(void)
        {
                switch (appState)
                {
                        case APP_INITIAL_STATE:
                        initHardware();
                        initNetwork();
                        break;
                        case APP_JOINING_STATE:
                        startNetwork();
                        break;
                        case APP_JOINED_STATE:
                        break;
                        default:
                        break;
                }
        }

APL_TaskHandler();這個函(han)數(shu)類似個有限(xian)狀(zhuang)態(tai)機，是zigbee所處狀(zhuang)態(tai)的(de)處理，程序在初始化(hua)時static AppState_tappState = APP_INITIAL_STATE;

如果沒有添加入網絡(luo)(luo)(luo)，或者(zhe)從(cong)網絡(luo)(luo)(luo)中斷掉，在主程(cheng)序每次(ci)循環的時候，會添加入網絡(luo)(luo)(luo)，如果是已將處(chu)于zigbee網絡(luo)(luo)(luo)中，則處(chu)于APP_JOINED_STATE狀態，直接退出(chu)APL_TaskHandler()函數。

我們(men)可以看下(xia)具體狀態下(xia)的(de)子函數；

硬件初始(shi)化只是(shi)配置個LED，當zigbee網絡正常工作時(shi)，led1常亮狀態，否(fou)認閃(shan)亮。

static void initHardware(void)
        {
                LED_Configure(APP_LED_0);
                LED_Configure(APP_LED_1);
        }

而對協調器的配(pei)置(zhi)是zigbee配(pei)置(zhi)的關鍵部(bu)分(fen)，下(xia)面(mian)一段(duan)代(dai)碼將本(ben)身(shen)配(pei)置(zhi)為協調器，并在網絡中定義(yi)兩(liang)個節點。

static void initNetwork(void)
        {
                DeviceType_tdeviceType = DEVICE_TYPE_COORDINATOR; //配置成協調器
                CS_WriteParameter(CS_DEVICE_TYPE_ID, &deviceType);
                boolpredefPANID = true;
                uint16_tnwkPANID = 0x1000;
                CS_WriteParameter(CS_NWK_PREDEFINED_PANID_ID, &predefPANID);
                CS_WriteParameter(CS_NWK_PANID_ID, &nwkPANID);//add by jacky

                // 定義數據節點0
                apsDataReq.dstAddrMode = APS_SHORT_ADDRESS;
                apsDataReq.dstAddress.shortAddress = 0;
                apsDataReq.profileId = APP_PROFILE_ID;
                apsDataReq.dstEndpoint = APP_DATA_ENDPOINT;//0X20
                apsDataReq.clusterId = APP_CLUSTER_ID;
                apsDataReq.srcEndpoint = APP_DATA_ENDPOINT;//0X20
                apsDataReq.asdu = (uint8_t *)sensor_buf;
                apsDataReq.asduLength = sizeof(execute_buf);//傳輸數據
                apsDataReq.txOptions.acknowledgedTransmission = 0;
                apsDataReq.radius = 0;
                apsDataReq.APS_DataConf = apsDataReqConf;

                // 定義數據節點1
                apsDataReq1.dstAddrMode = APS_SHORT_ADDRESS;
                apsDataReq1.dstAddress.shortAddress = 0;
                apsDataReq1.profileId = APP_PROFILE_ID;
                apsDataReq1.dstEndpoint = 0x40;
                apsDataReq1.clusterId = APP_CLUSTER_ID;
                apsDataReq1.srcEndpoint = 0x40;
                apsDataReq1.asdu = (uint8_t *)execute_buf;
                apsDataReq1.asduLength = sizeof(execute_buf);//傳輸數據
                apsDataReq1.txOptions.acknowledgedTransmission = 0;
                apsDataReq1.radius = 0;
                apsDataReq1.APS_DataConf = apsDataReqConf1;

                appState = APP_JOINING_STATE;
                SYS_PostTask(APL_TASK_ID);
       ; }

初始化(hua)結(jie)束后會改變appState的狀態，appState = APP_JOINING_STATE; 進行網絡的加入操作，使用SYS_PostTask(APL_TASK_ID);來投遞任(ren)務，讓(rang)系(xi)統(tong)再次調用APL_TaskHandler() 去執(zhi)行case APP_JOINING_STATE進而去執(zhi)行startNetwork()函數。

startNetwork()創(chuang)建一個定時器用來控制led的亮滅來表示網絡(luo)的連接狀態，在注冊一個網絡(luo)連接確認的回調函數。

static void startNetwork(void)
        {
                blinkTimer.interval = BLINK_TIMER_INTERVAL;
                blinkTimer.mode = TIMER_REPEAT_MODE;
                blinkTimer.callback = blinkTimerFired;
                HAL_StartAppTimer(&blinkTimer);
                startNetworkReq.ZDO_StartNetworkConf = ZDO_StartNetworkConf;//回調函數
                ZDO_StartNetworkReq(&startNetworkReq);
        }

回調函數中(zhong)，主要是判(pan)斷zigbee網絡連(lian)接(jie)，連(lian)接(jie)成功，關閉定時(shi)器和(he)注冊網絡節(jie)點。

static void ZDO_StartNetworkConf(ZDO_StartNetworkConf_t* conf)
        {
                HAL_StopAppTimer(&blinkTimer); //add by lht
                if (ZDO_SUCCESS_STATUS == conf->status)
                {
                        appState = APP_JOINED_STATE;
                        // 注冊網絡節點0
                        registerDataEndpointReq.simpleDescriptor = &dataEndpoint;
                        registerDataEndpointReq.APS_DataInd = APS_DataIndData;
                        APS_RegisterEndpointReq(&registerDataEndpointReq);

                        // 注冊網絡節點1
                        registerDataEndpointReq1.simpleDescriptor = &dataEndpoint1;
                        registerDataEndpointReq1.APS_DataInd = APS_DataIndData1;
                        APS_RegisterEndpointReq(&registerDataEndpointReq1);

                }
                else
                {
                        appState = APP_JOINING_STATE;
                }
                SYS_PostTask(APL_TASK_ID);
        }

zigbee數(shu)據發送函數(shu)：

static void sendDataBlock(unsigned char channel)
        {
                switch(channel)
                {
                        case Sensor:
                        APS_DataReq(&apsDataReq);
                        break;
                        case Execute:
                        APS_DataReq(&apsDataReq1);
                        break;
                        default:
                        break;
                }
        } 

zigbee數(shu)據接(jie)受(shou)函數(shu)：

static void APS_DataIndData(APS_DataInd_t *ind) //data come from sensor module
        {
                zigbee_in_flag = 1;
                memcpy(&sensor_data[1],ind->asdu, 18);
                sensor_from_address = ind->srcAddress.shortAddress;
        }
        static void APS_DataIndData1(APS_DataInd_t *ind) //data come from excute module
        {
                memcpy(init_data,ind->asdu, 30);
                to_excute_address = ind->srcAddress.shortAddress;
                if(init_data[0] == 0xaa)
                {
                        enable_count = 1;
                        excute_open = 1;
                }
        }

在zigbee的(de)節點函數APL_TaskHandler()，與協(xie)調器程(cheng)序(xu)中多的(de)狀態是：離(li)開(kai)zigbee網(wang)絡，定(ding)義的(de)宏是APP_LEAVE_STATE。

voidAPL_TaskHandler(void)
        {
                switch (appState)
                {
                        case APP_INITIAL_STATE:
                    &nbnbsp;   initHardware();
                        initNetwork();
                        break;
                        case APP_JOINING_STATE:
                        startNetwork();
                        break;
                        case APP_JOINED_STATE:
                        break;
                        case APP_LEAVE_STATE:
   &nbsnbsp;                    leaveNetwork();
                        break;
                        case APP_LEAVING_STATE:
                        break;
                        default:
                        break;
                }
         }