CC2430中的Key中斷程CC2430Key 2009-03-2401:14 閱讀156 評論1 字號：大大小小CC2430中的Key中斷程序這篇文章是關于TI的CC2430中按鍵中斷的詳細說明，是在看ZStack代碼后的總結，按鍵中斷涉化，消息的傳遞，等等。希望通過這篇文章對你使用ZStack有一定的幫助。voidosalTaskAdd(constpTaskInitFnpfnInit,constbyte該函數(shù)將一個任務加入，由操作系統(tǒng)自動分 TASK_ID{/*ThistaskmustbeloadedfirstbecauseHal_Init()initializesmanythingsthatothertask_initfunctionsmayneed.osalTaskAdd(Hal_Init,Hal_ProcessEvent,OSAL_TASK_PRIORITY_LOWosalTaskAdd(ma osalTaskAdd(MT_TaskInit,MT_ProcessEvent,OSAL_TASK_PRIORITY_LOW);osalTaskAdd(nwk_init,nwk_event_loop,OSAL_TASK_PRIORITY_MED);osalTaskAdd(APS_Init,APS_event_loop,OSAL_TASK_PRIORITY_LOW);osalTaskAdd(ZDApp_Init,ZDApp_event_loop,OSAL_TASK_PRIORITY_LOW);osalTaskAdd(SampleApp_Init,SampleApp_ProcessEvent,OSAL_TASK_PRIORITY_LOW}byteosal_set_event(bytetask_id,UINT16event_flag任務，這個數(shù)據(jù)包里一般情況下也攜帶了標志event_flag。OSAL任務初始化里有這樣一個語句：voidosalAddTasks(void){：voidHal_Init(uint8task_id{/*RegistertaskID*/}uint16Hal_ProcessEvent(uint8task_id,uint16events{uint8if(events& //如果是HAL_KEY_EVENT就執(zhí)行下面的操{/*Checkforkeys*//*ifinterruptdisabled,donextpolling*/if(!Hal_KeyIntEnable){//實現(xiàn)按鍵的重復查詢，osal_start_timerEx//在100毫秒系統(tǒng)時間后，將HAL_KEY_EVENT傳遞給Hal_TaskID所對應//任務，啟動該任務，這里順便提到HAL_KEY_EVENT在hal_drivers.h中給了定義。定//#define //#define //#defineHAL_SLEEP_TIMER_EVENT}#endif//returnevents^}#define#define/*p0#define/*5#define/*PortSelectRegisterforSW5#define/*PortDirectionRegisterforSW5#define/*PortInputModeRegisterforSW5#define/*InterruptEnableRegisterforSW5#define/*InterruptEnablebitforSW5#define/*TypeofinterruptforSW5#define/*EdgeTypeenablebitSW5#define/*PortInterruptControlforSW5#define/*InterruptenablebitforSW5#define/*PortInterruptFlagforSW5voidHalKeyInitvoid)voidHalKeyConfigboolinterruptEnablehalKeyCBack_tcback)uint8HalKeyReadvoid)voidHalKeyPollvoid)voidhalProcessKeyInterruptvoid)voidHalKeyEnterSleepvoid)uint8HalKeyExitSleepvoid)HAL_ISR_FUNCTIONhalKeyPort0IsrP0INT_VECTOR)p0口；HAL_ISR_FUNCTIONhalKeyPort1IsrP1INT_VECTOR)p1口；HAL_ISR_FUNCTIONhalKeyPort2IsrP2INT_VECTOR)p2口；voidHalKeyInit(void{/*Initializepreviouskeyto0*/halKeySavedKeys=0;#ifdefinedHAL_KEY_SW_5_SEL&=~(HAL_KEY_SW_5_BIT); /*p0SEL的第5位置0，把P0.5作為普通IO口*/HAL_KEY_SW_5_DIR&=~(HAL_KEY_SW_5_BIT); /*p0DIR的第5位置0，把P0.5作為輸*/HAL_KEY_SW_5_INP|=HAL_KEY_SW_5_BIT; /*Setpininputmodeto三態(tài)*//*回調函數(shù)的初始化，賦值為NULL*/ =NULL;HalKeyConfigured=FALSE;#endif/*HAL_KEY}{/*/*pHalKeyProcessFunction*/pHalKeyProcessFunction=cback;/**/if(Hal_KeyIntEnable){要p2口的中斷。///#ifdefined///#undef /*Dis-allowSW5whenkeyinterruptis#ifdefinedPICTL&=~(HAL_KEY_SW_5_EDGEBIT); /**/#if(HAL_KEY_SW_5_EDGE==HAL_KEY_FALLING_EDGE)HAL_KEY_SW_5_ICTL|= /*允許中斷HAL_KEY_SW_5_PXIFG=~(HAL_KEY_SW_5_BIT); /**/斷模式*/if(HalKeyConfigured=={}HalKeyConfigured=TRUE;#endif/*HAL_KEY}uint8HalKeyRead(void{uint8keys=#ifdefined /*Keyisactivehigh{keys|=}#endif/*HAL_KEY}voidHalKeyPollvoidHalKeyPoll{uint8keys=#ifdefined /*Keyisactivehigh{keys|=}/*InvokeCallbackifnewkeysweredepressed*/if(keys&&(pHalKeyProcessFunction)){}#endif/*HAL_KEY}{ #ifdefined /*1{HAL_KEY_SW_5_PXIFG=~(HAL_KEY_SW_5_BIT); /**/valid=TRUE;}if{ /*和相關#endif/*HAL_KEY}HAL_ISR_FUNCTION(halKeyPort0Isr,P0INT_VECTOR{/*P0IFisclearedbyHWforCHVER<REV_Eif(CHVER>=REV_E{/*Makesurethatweclearallenabled,butunusedP0IFGForP0wecanonlyenableordisablehighorlownibble,notbitbit.ForP1andP2enablingofsinglebitsarepossible,willnotanyunusedpinsgenerateinterruptsonP1orWecouldhavecheckedforlowandhighnibbleinP0,butisn'tnecessaryaslongasweonlyclearunusedpinP0IFG=(HAL_KEY_P0INT_LOW_USED|HAL_KEY_POINT_HIGH_USED);P0IF=0;}}找到hal_mcu.h這個文件，這里有中斷服務程序的原型。 HAL_ISR_FUNCTION(f,v)我們在使用的時候修改相應的參f表示中斷服務函數(shù)，v *0,0x03RF0,0x03RFTXFIFOUnderflowandRXFIFO1,0x0BADCEndof2,0x133,0x1B4,0x235,0x2BSleepTimer6,0x33Port27,0x3B8,0x43 9,0x4BTimer1(16-VECT(10,0x53Timer2(MACVECT(11,0x5BTimer3(8-VECT(12,0x63Timer4(8-VECT(13,0x6BPort0VECT(14,0x73VECT(15,0x7BPort1VECT(16,0x83RFGeneral*byteRegisterForKeys(bytetask_id){//Allowonlythefirst{return(true}return(false}byteOnBoard_SendKeys(bytekeys,bytestate){keyChange_t{//SendtheaddresstothemsgPtr=(keyChange_t*)osal_msg_allocate(sizeof(keyChange_t));if(msgPtr){msgPtr->state=state;msgPtr->keys=}return(ZSuccess}return(ZFailure}typedef{ state;// //}voidInitBoard(bytelevel{if(level==OB_COLD //{/*InitializeKeystuffHalKeyConfig(OnboardKeyIntEnable,OnBoard_KeyCallback);//這里就是3.2中提到的按鍵配置}}voidOnBoard_KeyCallback(uint8keys,uint8state){uint8//shiftkey(S1)isusedtogeneratekey//applicationsshouldnotuseS1whenkeyinterruptisshift=(OnboardKeyIntEnable==HAL_KEY_INTERRUPT_ENABLE)?false:((keys&HAL_KEY_SW_6)?true:false);}{////////第一次初始化平臺*****1*******InitBoard(OB_COLD);硬件驅動初始化******2******第二次初始化平臺*******4*******InitBoard(OB_READY);osal_start_system}voidInitBoard(bytelevel{if(level==OB_COLD}}{#if(definedHAL_KEY)&&(HAL_KEY==}osalAddTasks();//任務加入}voidosalAddTasks(void{osalTaskAdd(Hal_Init,Hal_ProcessEvent,OSAL_TASK_PRIORITY_LOWosalTaskAdd(SampleApp_Init,SampleApp_ProcessEvent,OSAL_TASK_PRIORITY_LOW}voidInitBoard(bytelevel{if(level==OB_COLD}else//以下執(zhí)行第二次初始化{OnboardKeyIntEnable=HAL_KEY_INTERRUPT_DISABLE;}}經(jīng)介紹過了，這里終于看到了回調函數(shù)OnBoard_KeyCallback。voidOnBoard_KeyCallback(uint8keys,uint8state{uint8shift=(OnboardKeyIntEnable==HAL_KEY_INTERRUPT_ENABLE)?false:((keys&HAL_KEY_SW_6)?true:false);}好了，執(zhí)行完初始化以后，osal_start_system()把所有任務交給操作系HAL_ISR_FUNCTION(halKeyPort0Isr,P0INT_VECTOR{}voidhalProcessKeyInterrupt(void){ #ifdefined /*判斷中斷標志位有效{HAL_KEY_SW_5_PXIFG=~(HAL_KEY_SW_5_BIT); /*清除中斷標志位*/valid=TRUE;}if{uint16Hal_ProcessEvent(uint8task_id,uint16events){if(events&{/*Checkforkeys*/#endif//returnevents^}voidHalKeyPoll(void){uint8keys=#ifdefined /*Keys{keys|=}/*keys的值改變了的話*/if(keys&&(pHalKeyProcessFunction)){}#endif/*HAL_KEY}voidOnBoard_KeyCallback(uint8keys,uin