协议栈实验天线杆2、按键控制灯亮灭simpleapp详解

SimpleAPP分1、SimpleApp程序总是从oword开始的，如果能找到一个例子开始，那么是最好不多的了，还好Ti为我们提供了很simpleappTexasInstruments\ZStack-1.4.3-SimpleApp双击打开\TexasInstruments\ZStack-1.4.3-1.2.1\Projects\zstack\Samples\SimpleApp\CC2430DB\SimpleApp.eww51的内核那只能用C了，一个地球人都知道的原理就是Cmain（）main()函数，那么好main()然后分析它就可以看清楚整个程序的结构了。我们直接看智能灯的应用，跟这个应用相关的配置是（DB）：SimpleSwitchDBSimpleControllerDB。SimpleSwitchDB（我的理解是这里是灯的开关），SimpleControllerDB10SS1LED1点亮（如果打开节能选项，将是闪烁状态）S2LED1S3 StartupandshutdowncodeforZStack（启动和关闭第一个宏：MINIMIZE_ROOT（line如果定义这个宏那么ZMAIN中的API函数将被在ROOT段外实现以为用户提供的空间来定义自己的常量，默认这个编译选项是不定义的。所谓的ZMAINAPI函数定义在line138-line144。在line152终于看到了期待main()ZSEGintmain(void{//Turnoffinterruptsosal_int_disable(INTS_ALL);//Initialize//处理器运行时钟，LEDIO//Makesuresupplyvoltageishighenoughtorun//Initializestackmemory//InitializeboardI/OInitBoard(OB_COLD);//InitialzeHALdrivers//InitializeNVSystemosal_nv_init(NULL);//Determinetheextendedaddress//InitializebasicNVitems//InitializetheMAC#ifndef//SincetheAFisn'tatask,callit'sinitializationroutine//Initializetheoperatingsystem//Allowinterruptsosal_int_enable(INTS_ALL);//FinalboardinitializationInitBoard(OB_READY);//Disyinformationaboutthisdevice/*DisythedeviceinfoontheLCD*/#ifdefLCD_SUPPORTEDosal_start_system();//NoReturnfrom}//2、osal_int_disable(INTS_ALL);//关中//【OSAL.CINTS_ALLbyteosal_int_disable(byteinterrupt_id{if(interrupt_id==INTS_ALL{//关闭所有中断响应【hal_mcu.h//#define st(EA=0;//st的定义在【hal_defs.h//#define do{x}while(LINE==-}return(INVALID_INTERRUPT_ID Def.h//#define return(ZSUCCESS//#define }3、HAL_BOARD_INIT();//初始化板子硬件部#defineHAL_BOARD_INIT() uint16 SLEEP&=~OSC_PD; /*turnon16MHzRCand32MHzXOSC//操作SLEEP16MHz32M//【hal_mcu.h//#define while(!(SLEEP&XOSC_STB)); /*waitfor32MHzXOSCstable*/\ /*chipbugworkaround*/\for(i=0;i<504;i++)asm("NOP"); /*Require63usdelayforallrevs//SLEEP寄存器中XOSC_STB64us，手册上是这么CLKCON=(0x00| /*32MHzXOSC//32M32.768Kwhile(CLKCON!=(0x00| //SLEEP|= /*turnoff16MHzRC//64us32K\/*setdirectionforGPIOoutputs LED1_DDR|=LED1_BV; //【hal_board_cfg.h//#define //#define //【hal_defs.h//#define (1n));//这是将某位置位的LED2_DDR|= //【hal_board_cfg.h//#define //#define //上面是对板上LED的初始化，完成的操作时将P1_0，P1_1设为输出（因为这两个IO口具有20ma的电流输出能力）！这里是跟硬件紧密相关的，需要根据自己硬件的具体情况来设。我的开发板上加上液晶指示的LED才两个，真是捉襟见肘啊，液晶背光灯接P2_0，调试LED接P1_0。设计的都不是很合理呢。看来在我的开发板上要完全的掉LED2呢呵呵。进行相应更改：（这些更改都在文件hal_board_cfg.h中越在line94~100）#define #define #define #define \/*configuretristates P2INP|= //这是对Joystick的配置，在【hal_board_cfg.h//#definePUSH2_BV BV(0);这里将JoystickIO设为三态状态，我的板子上没有这个东东哦，所以把Joystick也给了，注释掉【hal_board_cfg.hline120\/*configuresoftwarecontrolledperipheralVDD //配置软件控制的外设VDD\VDD_SW_SBIT= //【hal_board_cfg.hP1_2//#define //#define //#define }4、zmain_vdd_check();//确认VDD是否达到//【ZMain.c】line210//重复检测VDD的状态，直到成功检测的次数达到规定过的要求为止。估计是等电staticZSEGvoidzmain_vdd_check(void{uint8vdd_passed_count=0;booltoggle=0;while(vdd_passed_count<MAX_VDD_SAMPLES//#define 3;【ZMain.c//3{if(HalAdcCheckVdd(ZMAIN_VDD_LIMIT)//【ZMain.c//#define //【hal_adc.h//#define { //Keeptrack#timesVddpassesinarowMicroWait(10000); //延时10毫秒//微秒级延时函数【OnBoard.h//#defineMicroWait(t)//voidOnboard_wait(uint16timeout{while(timeout--{}}}{vdd_passed_count=0; MicroWait(50000); //Wait50msMicroWait //Waitanother50mstotry}//HalAdcCheckVdd()【hal_adc.cVDD是否大于或等boolHalAdcCheckVdd(uint8{uint16//如果修订版本号小于REV_D（0x03）就直接完成电压检测并返回TRUE。CHVER是修订版本号寄存器，此寄存器是只读的。if(CHVER<//检查版本【hal_mcu.h//#define //#define {return}//清除ADCADCIF=////【hal_adc.c//1.25//#define //#defineHAL_ADC_DEC_064 /*Decimateby648-bitresolution*/8位精度//#defineHAL_ADC_CHN_VDD3 /*VDD/3*/以AVDD_SOC/3为输入，检测电压ADCCON3=(HAL_ADC_REF_125V|HAL_ADC_DEC_064|while(!ADCIF);value|=((uint16)ADCH)<<//检return(value>=HalAdcVddLimit[limit]}//HalAdcVddLimitstaticcodeconstuint16HalAdcVddLimit[]{ VDDLimit- //关于电池电压的测量与计算在文档：UsingtheADCtoMeasureSupplyVoltage.pdf中有//MaxADCinputvoltage=referencevoltage//(VDD/3)max=1.25V=>maxVDD=3.75//12bitsresolutionmeansthatmaxADCvalue=0x07FF=2047//(theADCvalueis2’s//Batteryvoltage,VDD=adcvalue*(3.75///其中有两点很重要：1、最大的ADC输入值=参考电压；2、ADC的值以2的补码形式，也就是说12位的精度因为有1位是符号位所以相对于精度为11，即2^11=2048。因为以VDD/3为输入电压，以1.25VDD/31.25VDD=3.75；122.47adc//133页ADCCON3中ECH的说明//Extrachannelselect.Selectsthechannelnumberoftheextraconversionthatiscarriedoutafteraconversionsequencehasended.Thisbitfieldmustbewrittenforanextraconversiontobeperformed.IftheADCisnotrunning,writingtothesebitswilltriggeranimmediatesingleconversionfromtheselectedextrachannel.Thebitsareautomaticallyclearedwhentheextraconversionhasfinished.3IftheADCisnotrunning,writingtothesebitswilltriggeranimmediatesingleconversionfromtheselectedextrachannel.（ADC），这就是关键ADC3ADC//切换LED1和if(vdd_passed_count=={if((toggle=!(toggle)))//【hal_board_cfg.h//#defineHAL_TOGGLE_LED1() 0;}else{LED1_SBIT=1;})//这句很明显了，就是切换LED1toggle}}//关闭//【hal_board_cfg.h//#defineHAL_TURN_OFF_LED1() st(LED1_SBIT=LED1_POLARITY(0);)//#defineHAL_TURN_OFF_LED2() st(LED2_SBIT=LED2_POLARITY(0);)//#define //#define //#define //#defineACTIVE_HIGH /*doublenegationsresulttobe'1'*///这里的宏定义真的是太繁琐了，真不晓得TI这样弄有多大的意义，转了两个弯才看明白原来LED1是高电平点亮}5、zmain_ram_init();//初始化堆栈内存空器，程序段在文件中的存放，以及IARC/C++编译器都有莫大的关系，staticZSEGvoidzmain_ram_init(void{uint8*end;uint8*ptr;//Initializethecall(parameter)stackend=(uint8*)CSTK_BEG; //Lowerend while(--ptr>end)*ptr=ptr=(uint8*)RSTK_END-1; while(--ptr>(uint8*)SP)*(idatauint8*)ptr=}6、InitBoard(OB_COLD);//初始化板上IO#define #define #defineOB_READY//【OnBoard.cvoidInitBoard(bytelevel{if(level==OB_COLD{osal_int_disableINTS_ALL//关闭所有的LED，调用了LEDHalLedSet(HAL_LED_ALL,HAL_LED_MODE_OFF//【hal_led.h//#defineHAL_LED_ALL (HAL_LED_1|HAL_LED_2|LED3,LED4，LEDLED（其实就是宏定义啦//#define //#define //#define //#define //#define //LED设置函数【hal_led.cuint8HalLedSet(uint8leds,uint8{#if(defined(BLINK_LEDS))&&(HAL_LED==//前提条件是定义了闪烁LED和LED硬件驱动服务使能//HAL_LED定义在【hal_board_cfg.h#ifndefHAL_LED#defineHAL_LEDTRUE//当设为FALSE时就不使用LED#if(!definedBLINK_LEDS)&&(HAL_LED==TRUE)#defineBLINK_LEDSHalLedControl_ttypedefstructuint8 /*操作模式uint8todo; /*剩余的闪烁周期数*/uint8ot; /*周期中所占的比例*/uint16time; /*开关周期时间(msec)*/uint32next; /*下次改变的时间*/}switch{case#define #define #define #define //LED闪烁函数【hal_led.cvoidHalLedBlink(uint8leds,uint8numBlinks,uint8percent,uint16{#if(defined(BLINK_LEDS))&&(HAL_LED==//同样先判断是否启用了LED并且使用LEDuint8led;HalLedControl_t*sts;if(leds&&percent&&//判断参数的有效性，percent参数指明一个周期中LED{if(percent<//{led=leds&=//掉不想要操作的sts=typedef{HalLedControl_tHalLedControlTable[HAL_LED_DEFAULT_MAX_LEDS]; }#define #ifdefstaticHalLedStatus_tHalLedStatusControl;while{if(leds&//检测当前LED{preBlinkState|=(led&//目前的额LED状//staticuint8sts = /*关闭先前的模式sts- = /*Timeforoneon/offcyclests->ot= /*%ofcycleLEDison =numBlinks; /*Numberofblinkcycles*///sts->next= /*Startnow//当前系统时钟【OSAL_Timers.cuint32osal_GetSystemClock(void{return(osal_systemClock}//staticuint32//这样看来第一次运行的时候osal_systemClock=0，系统中应该启动了sts->mode|=HAL_LED_MODE_BLINK; leds^=led;//掉已设置好的这个}led<<=//检测下一个osal_set_event(Hal_TaskID,//【hal_drivers.h//#define //externuint8//此函数为用户设置任务标志【OSAL.c{if(task_id t//【sapi.cconstpTaskEventHandlerFntasksArr[]={#ifdefined(MT_TASK)//【OSAL_Tasks.h//处理函数原型：typedefunsignedshort//定义处理函数的函数指针类//tasksArr中任务循环中的顺序必须和osalInitTask中任务的初始化顺序一const t=sizeof(tasksArr)/sizeof(tasksArr[0]////只有当任务ID{ //typedefunsignedcharhalIntState_t; //【hal_mcu.h#defineHAL_ENTER_CRITICAL_SECTION(x) st(x=EA;HAL_DISABLE_INTERRUPTS();)#define st(EA=x;#defineHAL_CRITICAL_STATEMENT(x) st(halIntState_ts;HAL_ENTER_CRITICAL_SECTION(s);x;HAL_EXIT_CRITICAL_SECTION(s);) //【sapi.c//uint16 //Release}return(INVALID_TASK//如果任务ID超出返回则返回任务无效 //#define return(ZSUCCESS}}//100%也就相当于常亮了，就执行LED{HalLedSet(leds,uint8HalLedSet(uint8leds,uint8{#if(defined(BLINK_LEDS))&&(HAL_LED==//一样的前提是开始了LEDuint8led;HalLedControl_t*sts;switch(mode)//检测要切换的LED{case//如果是闪烁模式，则将指定的LED5%//【hal_led.h#define #define #define #define case/*Defaultflash,Ntimes,D%dutycycleHalLedBlink(leds,HAL_LED_DEFAULT_FLASH_COUNT,HAL_LED_DEFAULT_DUTY_CYCLE,HAL_LED_DEFAULT_FLASH_TIME);//如果是连闪模式，则将指定的LED505%casecasecase//LEDled=HAL_LED_1;leds&=sts=while{if(leds&{if(mode!={ss>mode=mode;/*ONorOFF}{ss>mode^=HAL_LED_MODE_ON;/*Toggle//1LEDLEDLED}//这个函数是对LEDif(leds&//检测是否是{if(mode==//{//点亮}{}}if{HalLedState|=}{HalLedState&=}//此用来记住当前操作的LED的状态，如果是点亮的就把HalLedState中相应的位置leds^=}}}#elif(HAL_LED==LedOnOff(leds,#endif/*BLINK_LEDS&& return(HalLedState//返回的是操作了的LED的状态，每个LED1}}}//如果没有开始LED驱动服务，或者没有开启LED闪烁，就直接关闭{ /*Noontime,turn}#elif(HAL_LED==//如果没有定义闪烁，则只对LEDpercent=(leds&HalLedState)?HAL_LED_MODE_OFF:HalLedOnOff(leds,percent); /*Toggle*/#endif/*BLINK_LEDS&&HAL_LED*/}case/*Defaultflash,Ntimes,D%dutycycleHalLedBlink(leds,HAL_LED_DEFAULT_FLASH_COUNT,casecasecaseled=leds&=sts=HalLedStatusControl.HalLedControlTable;while(leds){if(leds&{if(mode!={sts->mode= /*ONorOFF}{ /*Toggle}HalLedOnOff(led,sts->mode);leds^=led;}led<<=1;}}#elif(HAL_LED==LedOnOff(leds,#endif/*BLINK_LEDS&&HAL_LED return(HalLedState);}//通过上面程序的解读我发现，到目前为止对LED的操作真正实现的只有开、关、切换，所谓的闪烁只是调用了一个系统设置函数osal_set_event(Hal_TaskID,HAL_LED_BLINK_EVENT);难道这都是通过系统来实现的？因为闪烁涉及到了时间占空比，估计还调用了定时器，那有可能还用到了中断，嗯，有可//CheckfornOutvoidChkReset(void){uint8//Isolateresetindicatorbitsrib=SLEEP&LRESET;//得到SLEEPRST状态【hal_mcu.h//#defineLRESET if(rib==RESETPO)//重启的原因【OnBoard.h#defineRESETPO 0x00//上电重启#defineRESETEX 0x08//外部重启#defineRESETWD 0x10//看门狗重启{}elseif(rib==RESETEX{//PutcodeheretohandleExternal}elseif(rib==RESETWD{//PutcodeheretohandleWatchDog}//未知的重启原因，闪烁LED{while(1){HalLedSet(led,HAL_LED_MODE_ON);MicroWait(62500);MicroWait(62500HalLedSet(led,HAL_LED_MODE_OFF);MicroWait(37500);MicroWait(37500);if(!(led>>=1))led=}}}/*Timer2forOsal//设置OSALOnboardTimerIntEnable=HalTimerConfig //8bit //ClearTimeronCompare //Channel1- PARE,OutputCompare //Useinterrupt //Channel//【OnBoard.h//使用指定的定时器#define //【hal_timer.h//#define//8bit//fine16bitMac//fine8bit//fine16bit//efine4//Maxnumberof////#define//Normal//#define//ClearTimer//#defineHAL_TIMER_MODE_MASK(HAL_TIMER_MODE_NORMAL|HAL_TIMER_MODE_CTC)////#define//SingleChannel//#define//Channel//#define//Channel//#define//Channel//#define(HAL_TIMER_CHANNEL_SINGLE HAL_TIMER_CHANNEL_AHAL_TIMER_CHANNEL_B|\\//通道模//#define ChannelModenpt//#define Channel //#defineHAL_TIMER_CH_MODE_OVERFLOW ModeOverflow//#defineHAL_TIMER_CH_MODE_MASK(HAL_TIMER_CH_MODE_INPUT_CAPTURE| PARE|//更新定时器的函数【OnBoard.cvoidOnboard_TimerCallBack(uint8timerId,uint8channel,uint8{if((timerId==OSAL_TIMER)&&(channelMode== {//【OSAL_Timers.cvoidosal_update_timers(void){osalTimerUpdate(tmr_decr_time//【OSAL_Timers.cstaticvoidosalTimerUpdate(uint16updateTime{halIntState_tintState;osalTimerRec_t*srchTimer;osalTimerRec_t*prevTimer;//typedef//void//UINT16//UINT16//byte//}osalTimerRec_t;HAL_ENTER_CRITICAL_SECTION(intState); //Updatethesystemtimeosal_systemClock+=updateTime;//就目前的程序流程来看//Lookforopentimerslotif(timerHead!=NULL)//osalTimerRec_t{//AddittotheendofthetimerlistsrchTimer=timerHead;prevTimer=(void*)NULL;//Lookforopentimerslotwhile(srchTimer){//DecreasethecorrectamountoftimeifschTmr>timeout<=updateTime)cTmcTmcTm//Whentimeout,executethetaskif(scTm>timeout==0){osal_set_event(scTimr>task_id,scTimr>event_flag//Takeoutofif(prevTimer==NULL)timerHead=scTmr->next;pvTm->next=shTm//saveTimer=scTmr//memoryosal_mem_(srchTimer);srchTimer=}{//GetprevTimer=srchTimer;srchTimer=scTimr>next;}}#ifdefPOWER_SAVING//osal_retune_timers调整CPURETUNE_THRESHOLD，则睡眠时间将被设置为//osal_timer_activate()FALSE或者TRUE}HAL_EXIT_CRITICAL_SECTION(intState //eenable}的是不明所以，不晓得到底要干什么，请知道说明一下啊，谢谢了}#ifdef}}//配置时钟服务【hal_timer.cuint8HalTimerConfig(uint8timerId,uint8opMode,uint8channel,uint8boolintEnable,halTimerCBack_t{hwtimerid=halTimerRemap#define #define #defineHW_TIMER_4 #defineHW_TIMER_INVALID #defineHW_TIMER_MAX uint8halTimerRemap(uint8timerId){switch{caseHAL_TIMER_0:returnHW_TIMER_3;caseHAL_TIMER_2:returnHW_TIMER_4;caseHAL_TIMER_3:returnHW_TIMER_1;return}}if((opMode&HAL_TIMER_MODE_MASK)&&(timerIdHAL_TIMER_MAX)(channelMode&HAL_TIMER_CHANNEL_MASK)&&(channel&//{ =TRUE; =opMode; =channel; =channelMode; =intEnable; =cBack;//【hal_timer.c//statichalTimerSettings_t//typedef bool bool halTimerCBack_t//}//typedefvoid(*halTimerCBack_t)(uint8timerId,uint8channel,uint8}{return}return}} //{#ifdefZTOOL_PORTOnboardKeyIntEnable=HAL_KEY_INTERRUPT_DISABLE;HalKeyConfig(OnboardKeyIntEnable,OnBoard_KeyCallback);//初始化Key}}化，而热启动只是重置了一下KEY而已。关于按键的初始化，稍后再做说明7、HalDriverInit();//初始化硬件驱动，这//【hal_drivers.c{HalTimerInit();////【hal_timer.c//#define #define #define /*Clocksettings#define#define#define/*Noclockscaling#define/*Clockpre-scaled8#define/*Clockpre-scaled32#define/*Clockpre-by128#define/*Bits3:2//定时器的初始化很简单就是设置了各个寄存器的初始值，然后了中断，voidHalTimerInit{T1CCTL0=/*MakesureinterruptsaredisabledT1CCTL1=/*MakesureinterruptsaredisabledT1CCTL2=/*MakesureinterruptsaredisabledT3CCTL0=/*MakesureinterruptsaredisabledT3CCTL1=/*MakesureinterruptsaredisabledT4CCTL0=/*MakesureinterruptsaredisabledT4CCTL1=/*Makesureinterruptsaredisabled/*Setupprescale&clockfortimer0*/ halTimerRecord[HW_TIMER_1].prescaleVal=/*Setupprescale&clockfortimer2*/ halTimerRecord[HW_TIMER_3].prescaleVal=/*Setupprescale&clockfortimer3*/ halTimerRecord[HW_TIMER_4].prescaleVal=//1，3，4的通道数据结构，其实就是在数据结构中设置了定时0/*SetupTimer1Channelstructure*/halTimerChannel[HW_TIMER_1].TxCCTL= //#defineTCHN_T1CCTL halTimerChannel[HW_TIMER_1].TxCCL= halTimerChannel[HW_TIMER_1].TxCCH= TCHN_T1CCH;halTimerChannel[HW_TIMER_1].TxOVF= TCNH_T1OVF;halTimerChannel[HW_TIMER_1].ovfbit= halTimerChannel[HW_TIMER_1].intbit= /*SetupTimer3Channelstructure*/halTimerChannel[HW_TIMER_3].TxCCTL= halTimerChannel[HW_TIMER_3].TxCCL= halTimerChannel[HW_TIMER_3].TxCCH= TCHN_T3CCH;halTimerChannel[HW_TIMER_3].TxOVF= TCNH_T3OVF;halTimerChannel[HW_TIMER_3].ovfbit= halTimerChannel[HW_TIMER_3].intbit= /*SetupTimer4Channelstructure*/halTimerChannel[HW_TIMER_4].TxCCTL= halTimerChannel[HW_TIMER_4].TxCCL= halTimerChannel[HW_TIMER_4].TxCCH= TCHN_T4CCH;halTimerChannel[HW_TIMER_4].TxOVF= TCNH_T4OVF;halTimerChannel[HW_TIMER_4].ovfbit= halTimerChannel[HW_TIMER_4].intbit= }#if(definedHAL_ADC)&&(HAL_ADC==//如果开启了硬件ADC服务则进行ADC//【hal_adc.cvoidHalAdcInit{#if(HAL_ADC==volatile ADCCON1=HAL_ADC_STSEL|HAL_ADC_RAND_GEN|//#define //#define //设置ADCCON1.ST=1//#define //#define ////这些配置都可以在【hal_adc.c//AVDD_SOC为参考电压，8位分辨率，AVDD/3//以上只是ADCtmp=ADCL; /*通过转换值来清除EOC*/tmp=ADCH;//因为每次重启后的ADC对外部的转换都是地电平，所以这里启动两次对地的ADC转换来消除这个bugwhile((ADCCON1&HAL_ADC_EOC)!=HAL_ADC_EOC); forconversion*/tmp=ADCL; /*readADCL,ADCHtoclearEOC*/tmp=ADCH;while((ADCCON1&HAL_ADC_EOC)!=HAL_ADC_EOC); forconversion*/tmp=ADCL; /*readADCL,ADCHtoclearEOC*/tmp=ADCH;}#if(definedHAL_DMA)&&(HAL_DMA==TRUE)//DMA初始化【hal_dma.cvoidHalDmaInit(void{HAL_DMA_SET_ADDR_DESC0(&dmaCh0//【hal_dma.h//DMAtypedefstruct{uint8srcAddrH;uint8dstAddrH;uint8dstAddrL;uint8xferLenL;uint8ctrlA;uint8ctrlB;}//设置DMA通道0的配#defineHAL_DMA_SET_ADDR_DESC0(a)\st(\DMA0CFGH=(uint8)((uint16)(a)>>8 DMA0CFGL=(uint8)((uint16)(a) )}/*AES高级加密单元，暂时不说吧#if(definedHAL_AES)&&(HAL_AES==TRUE)/*LCD初始化，这个要大改了，相信每个人的板子上面的LCD设计都有可能不相同的吧*///使用LCD的前提是要定义了#if(definedHAL_LCD)&&(HAL_LCD==TRUE)/*LED#if(definedHAL_LED)&&(HAL_LED==TRUE)//【hal_led.cvoidHalLedInit{#if(HAL_LED==/*关闭所有LEDHalLedSet(HAL_LED_ALL,/*这个sleepActiveHalLedStatusControl.sleepActive=FALSE;#endif/*HAL_LED*/}/*UART初始化，这里只是配置了UART的端口以及RTDMA模式的配置，并没有配置UART数据传输格式*/#if(definedHAL_UART)&&(HAL_UART==TRUE)//【hal_uart.cvoidHalUARTInit(void{#ifhalDMADesc_t//如果允许UART的DMA则定义一个DMA//初始设置USART0优先级高于USART1P2DIR&~P2DIR_PRIPO;//#defineP2DIR_PRIPO P2DIR|=HAL_UART_PRIPO;//#if #define #define //如果定义HAL_UART_0_ENABLE则UART0有最高优先级，否则UART1高优先级。在我的板子上是使用UART0所以要定义HAL_UART_0_ENABLE了，呵呵#if//设置UART0I/O到P0.//#defineHAL_UART_0_PERCFG_BIT PERCFG&=~HAL_UART_0_PERCFG_BIT;/*配置P0上的TxandRx//#defineHAL_UART_0_P0_RX_TX P0SEL|=HAL_UART_0_P0_RX_TX;/*保证ADC不用这几个引脚作为输入，其实重启后的状态就是不用的*/ADCCFG&=~HAL_UART_0_P0_RX_TX;/*用UARTMode*//*清空缓存U0UCR=//对于UART1的配置如出一辙，只是换了一下管脚而已，把UARTP1#if//SetUART1I/OlocationtoP1.PERCFG|=HAL_UART_1_PERCFG_BIT;/*EnableTxandRxonP1 |=/*MakesureADCdoesntusethis*/ADCCFG&=~HAL_UART_1_P1_RX_TX;/*ModeisUARTMode*/U1CSR=CSR_MODE;HAL_DMA_SET_TRIG_MODE(HAL_DMA_SET_TRIG_MODE(ch,HAL_DMA_TMODE_SINGLE/*FlushitU1UCR=//下面是UART的DMA配置，需要先定义HAL_UART_DMA为TRUE#ifHAL_UART_DMAch=HAL_DMA_GET_DE