ZigBee协议栈初始化网络启动流程图

ZigBee协议栈初始化网络启动流程ZigBee的基本流程：由协调器的组网（创建PAN ID），终端设备和路由设备发现网络以及加入网络。

基本流程：main()->osal_init_system()->osalInitTasks()->ZDApp_Init()，进协议栈初始化函数ZDApp_Init()。

1.1 进入程序入口main()。

ZMain.c中C++ Codeint main( void ){// Turn off interruptsosal_int_disable( INTS_ALL );// Initialization for board related stuff such as LEDsHAL_BOARD_INIT();// Make sure supply voltage is high enough to runzmain_vdd_check();// Initialize board I/OInitBoard( OB_COLD );// Initialze HAL driversHalDriverInit();// Initialize NV Systemosal_nv_init( NULL );// Initialize the MACZMacInit();// Determine the extended addresszmain_ext_addr();// Initialize basic NV itemszgInit();#ifndef NONWK// Since the AF isn't a task, call it's initialization routine afInit();#endif// Initialize the operating systemosal_init_system();// Allow interruptsosal_int_enable( INTS_ALL );// Final board initializationInitBoard( OB_READY );// Display information about this devicezmain_dev_info();/* Display the device info on the LCD */#ifdef LCD_SUPPORTEDzmain_lcd_init();#endif#ifdef WDT_IN_PM1/* If WDT is used, this is a good place to enable it. */ WatchDogEnable( WDTIMX );#endifosal_start_system(); // No Return from herereturn 0; // Shouldn't get here.} // main()1.2 给任务添加IDsapi.c中C++ Codevoid osalInitTasks( void ) //为各自进程添加ID 用于任务的查找{uint8 taskID = 0;tasksEvents = (uint16 *)osal_mem_alloc( sizeof( uint16 ) * tasksCnt);osal_memset( tasksEvents, 0, (sizeof( uint16 ) * tasksCnt));macTaskInit( taskID++ );nwk_init( taskID++ );Hal_Init( taskID++ );//硬件抽象层初始化#if defined( MT_TASK )MT_TaskInit( taskID++ );#endifAPS_Init( taskID++ );ZDApp_Init( taskID++ );//判断如果协调器节点建立网络、如果终端节点加入网络SAPI_Init( taskID );}1.3 初始化ZigBee协议栈网络ZDApp.cC++ Codevoid ZDApp_Init( uint8 task_id ){// Save the task ID// Initialize the ZDO global device short address storageZDAppNwkAddr.addrMode = Addr16Bit;ZDAppNwkAddr.addr.shortAddr = INVALID_NODE_ADDR;(void)NLME_GetExtAddr(); // Load the saveExtAddr pointer.// Check for manual "Hold Auto Start"//检测到有手工设置HAL_KEY_SW_1则会设置devState = DEV_HOLD,从而避开网络初始化ZDAppCheckForHoldKey();// Initialize ZDO items and setup the device - type of device to create.ZDO_Init(); //通过判断预编译来开启一些函数功能// Register the endpoint description with the AF// This task doesn't have a Simple description, but we still need// to register the endpoint.afRegister( (endPointDesc_t *)&ZDApp_epDesc );#if defined( ZDO_USERDESC_RESPONSE )ZDApp_InitUserDesc();#endif // ZDO_USERDESC_RESPONSE// Start the device?if ( devState != DEV_HOLD ){ZDOInitDevice( 0 );}else{// Blink LED to indicate HOLD_STARTHalLedBlink ( HAL_LED_4, 0, 50, 500 );}} /* ZDApp_Init() */如果设置devState为DEV_HOLD，则不会执行ZDOInitDevice；反之，系统会调用此函数是设备组网或者入网。

看下这个函数完成的功能是什么样子的。

ZDOInitDevice是设备在网络中启动。

它会读取NV中的ZCD_NV_STARTUP_OPTION选项决定是否恢复网络状态。

如果应用层强制进行新的join操作，它应该在调用这个函数之前设置ZCD_NV_STARTUP_OPTION中的ZCD_STARTOPT_DEFAULT_NETWORK_STATE位。

可以调用zgWrieStartupOptions()函数完成这些设置。

1.4 初始化设备（启动网络和设置网络类型）ZDApp.cC++ Codeuint8 ZDOInitDevice( uint16 startDelay ){uint8 networkStateNV = ZDO_INITDEV_NEW_NETWORK_STATE;uint16 extendedDelay = 0;if ( devState == DEV_HOLD ){// Initialize the RAM items table, in case an NV item has been updated. zgInitItems( FALSE );}ZDConfig_InitDescriptors();//devtag.071807.todo - fix this temporary solution_NIB.CapabilityInfo = ZDO_Config_Node_Descriptor.CapabilityFlags;devState = DEV_INIT; // Remove the Hold state// 函数读取NV项目ZCD_NV_LEAVE_CTRL的值,ZDApp_LeaveCtrl指向这个值// Initialize leave control logic// Check leave control reset settings//设备的断开会造成DEV_HOLD状态 ZDApp_LeaveCtrlStartup( &devState, &startDelay );// Leave may make the hold state come backif ( devState == DEV_HOLD ){//设置启动选项// Set the NV startup option to force a "new" join.zgWriteStartupOptions( ZG_STARTUP_SET,ZCD_STARTOPT_DEFAULT_NETWORK_STATE );//通知应用层触发事件// Notify the applicationsosal_set_event( ZDAppTaskID, ZDO_STATE_CHANGE_EVT );return ( ZDO_INITDEV_LEAVE_NOT_STARTED ); // Don't join - (one time).}#if defined ( NV_RESTORE )// Get Keypad directly to see if a reset nv is needed.// Hold down the SW_BYPASS_NV key (defined in OnBoard.h)// while booting to skip past NV Restore.if ( HalKeyRead() == SW_BYPASS_NV )networkStateNV = ZDO_INITDEV_NEW_NETWORK_STATE;else{// 通过读取ZCD_NV_STARTUP_OPTION选项决定是否进行网络恢复 // Determine if NV should be restorednetworkStateNV = ZDApp_ReadNetworkRestoreState();}if ( networkStateNV == ZDO_INITDEV_RESTORED_NETWORK_STATE ){networkStateNV = ZDApp_RestoreNetworkState();}else{// Wipe out the network state in NVNLME_InitNV();NLME_SetDefaultNV();}#endifif ( networkStateNV == ZDO_INITDEV_NEW_NETWORK_STATE )//如果是要启动新的网络{ZDAppDetermineDeviceType();//根据选项设置设备的网络类型，默认路由类型// Only delay if joining network - not restoring network stateextendedDelay = (uint16)((NWK_START_DELAY + startDelay)+ (osal_rand() & EXTENDED_JOINING_RANDOM_MASK));}// Initialize the security for type of deviceZDApp_SecInit( networkStateNV );// 触发启动网络// Trigger the network startZDApp_NetworkInit( extendedDelay );// set broadcast address mask to support broadcast filtering 用于处理合法的广播地址NLME_SetBroadcastFilter( ZDO_Config_Node_Descriptor.CapabilityFlags );return ( networkStateNV );}这个函数注意功能：初始化设备配置，ZDAppDetermineDeviceType()设置网络类型（协调、路由、终端），ZDApp_NetworkInit( extendedDelay )初始化网络并开启或加入网络。