基于ARM的倒计时秒表

桂林电子科技大学信息科技学院基于ARM的倒计时秒表实训报告学号姓名指导教师韩桂明张琨赵志鹏2012年11月3日实训题目倒计时秒表一、整体设计1题目要求11硬件要求（1）两位数码管显示，使用74LS164控制（连接到PA）；（2）两个独立按键，带指示灯（连接到PE6、PE7）。12软件要求（1）实现99秒倒计时，并通过数码管显示；（2）两个按键，一个“运行/暂停”按键，一个“调整计时”按键。（3）倒计时为0时，指示灯闪烁。（4）在实验箱屏幕上绘图显示秒表及其他功能13发挥部分通过编码器（如74LS148）扩展出4个按键（使用4位拨码开关）连接到PE6、PE7。加入蜂鸣器，可作声音报警使用。使用SIO发送数据到74LS164。2性能指标能正确使用数码管数字，亮度清晰且不闪烁。倒计时时间准确。实现倒计时。“运行/暂停”按键，“调整计时”按键。实现指示灯闪烁，可扩展蜂鸣器鸣响报警。二、方案设计1、方案论证本次实训可以使用查询和中断两种方法来做，由于本人对中断不太熟悉所以决定采用查询方法。利用定时器的计数观察寄存器TCNTON，来判断倒计时是否到0，然后对初始值1来实现间隔为1S的倒计时。2、工作原理硬件部分我采用了，一块74LS148，两块74LS164芯片来实现总体功能。148芯片具有优先编码功能，可以对拨码开关进行编码，将信号送进实验箱的PE6和PE7口从而实现输入。两块164芯片进行串联，可以通过移位的方式来显示实验箱输出的数字。软件部分对定时器3设置一秒定时，观察TCNTO3的数值，当计数到0时对初始值减一，重新更新启动定时器。判断输入动作，做出暂停，运行，时间调整等相应动作。同时对输出数据进行倒序，逐位输入到164芯片中进行显示。图形界面方面，利用四边形函数画出数字制作字库，同时使用PE6作为数据发送，PE7模拟时钟脉冲。同时使用相关事件监视触摸屏。3、原理图，PCB图电源部分，通过电容对输入进行滤波，得到更稳定的电压输入电路，利用148芯片对拨码开关进行优先编码数码管显示电路通过两个164芯片串联实现2位数字显示蜂鸣器报警电路PCB图三、软件设计数码管显示模块；将段码逐位输入164芯片中，两个数码管需要16位INCLUDE“44BH“VOIDSMGUNSIGNEDINTDATA_BUFUNSIGNEDCHARIUNSIGNEDINTTP,TTI16TPDATA_BUFDORPDATARPDATA/CLK0，1111011111TTTP/DATA，除数据第一位，其他屏蔽RPDATATT1/数据下一位WHILEI0/16次，移至最后一个数码管按键判断模块INCLUDE“44BH“DEFINEPE_67RPDATE6EXTERNINTNUMVOIDKEYVOIDIFPE_670X0/PE60,PE70,复位模块DELAY100IFPE_670X0ALL_INITWHILEPE_670X2/判断拨码开关复位IFPE_670X1/PE61,PE70DELAY100IFPE_670X1TIME3_R_STIME3_R_SWHILEPE_670X1IFNUM0TIME3_R_S1/设置标志位，1为暂停状态IFPE_670X2IFPE_670X2IFNUM6IFORJ3000J0JVOIDIO_INITVOIDRPCONE0X0500/配置PE6、PE7为输入,其它为输出RPCONA0X0/配置A口全部为输出RPDATA0X0/PA口初始为0VOIDTIMER3VOIDRTCFG00XF900RTCFG10X02000/8分频RTCNTB330000RTCMPB310000RTCON0X0A0000RTCON0X090000VOIDALL_INITVOIDIO_INITTIMER3NUM99TIME3_R_S1VOIDCMAINVOIDINTI0ALL_INITWHILE1KEYIFRTCNTO30RTCON0X0A0000RTCON0X090000/开启定时器IFNUM0SMGDIS_CODENUM10/INCLUDEINCLUDEINCLUDEINCLUDE“NANOXH“/DEFINES3C44B0IFDEFS3C44B0DEFINERPCONEVOLATILEUNSIGNED0X1D20028DEFINERPDATEVOLATILEUNSIGNED0X1D2002CDEFINERPUPEVOLATILEUNSIGNED0X1D20030VOIDSEND_NUMINTVOIDP6_7_INITCHARTAB0X3F,0X06,0X5B,0X4F,0X66,0X6D,0X7D,0X07,0X7F,0X6FENDIFSTATICGR_WINDOW_IDROOT_WSTATICGR_WINDOW_IDTIME_SHI_WSTATICGR_WINDOW_IDTIME_GE_WSTATICGR_WINDOW_IDR_S_WSTATICGR_WINDOW_IDADD_WSTATICGR_WINDOW_IDSUB_WSTATICGR_WINDOW_IDINIT_WSTATICGR_GC_IDROOT_GCSTATICGR_GC_IDTIME_SHI_GCSTATICGR_GC_IDTIME_GE_GCSTATICGR_GC_IDR_S_GCSTATICGR_GC_IDADD_GCSTATICGR_GC_IDSUB_GCSTATICGR_GC_IDINIT_GCSTATICGR_EVENTEVENTTIMECHARNEXT_NUMSTRUCTNOTEINTXINTYCHARR_SCHARNUMTIMEVOIDZIKUGR_WINDOW_IDWX,GR_GC_IDGC,CHARDGRCLEARWINDOWWX,0IFD0GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,5,85,10,50GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD1GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,65,85,10,50ELSEIFD2GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,5,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD3GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD4GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,65,85,10,50ELSEIFD5GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD6GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,5,85,10,50GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD7GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,65,85,10,50ELSEIFD8GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,5,85,10,50GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD9GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10VOIDWINDOW_INITROOT_WGRNEWWINDOWGR_ROOT_WINDOW_ID,0,0,320,220,0,BLACK,BLUEROOT_GCGRNEWGCGRMAPWINDOWROOT_WVOIDKEY_INITTIME_SHI_WGRNEWWINDOWROOT_W,70,0,100,150,0,BLACK,BLACKTIME_SHI_GCGRNEWGCGRMAPWINDOWTIME_SHI_WTIME_GE_WGRNEWWINDOWROOT_W,170,0,100,150,0,BLACK,BLACKTIME_GE_GCGRNEWGCGRMAPWINDOWTIME_GE_WTIMEX0TIMEY0TIMER_S0TIMENUM99NEXT_NUM99R_S_WGRNEWWINDOWROOT_W,5,180,70,30,1,BLUE,REDR_S_GCGRNEWGCGRSELECTEVENTSR_S_W,GR_EVENT_MASK_BUTTON_DOWN|GR_EVENT_MASK_EXPOSUREGRMAPWINDOWR_S_WGRSETGCFOREGROUNDR_S_GC,YELLOWGRSETGCBACKGROUNDR_S_GC,BLUEGRTEXTR_S_W,R_S_GC,5,20,“RUN/STOP“,1,GR_TFASCIIADD_WGRNEWWINDOWROOT_W,85,180,70,30,1,BLUE,REDADD_GCGRNEWGCGRSELECTEVENTSADD_W,GR_EVENT_MASK_BUTTON_DOWN|GR_EVENT_MASK_EXPOSUREGRMAPWINDOWADD_WGRSETGCFOREGROUNDADD_GC,YELLOWGRSETGCBACKGROUNDADD_GC,BLUEGRTEXTADD_W,ADD_GC,30,20,“1“,1,GR_TFASCIISUB_WGRNEWWINDOWROOT_W,165,180,70,30,1,BLUE,REDSUB_GCGRNEWGCGRSELECTEVENTSSUB_W,GR_EVENT_MASK_BUTTON_DOWN|GR_EVENT_MASK_EXPOSUREGRMAPWINDOWSUB_WGRSETGCFOREGROUNDSUB_GC,YELLOWGRSETGCBACKGROUNDSUB_GC,BLUEGRTEXTSUB_W,SUB_GC,30,20,“1“,1,GR_TFASCIIINIT_WGRNEWWINDOWROOT_W,245,180,70,30,1,BLUE,REDINIT_GCGRNEWGCGRSELECTEVENTSINIT_W,GR_EVENT_MASK_BUTTON_DOWN|GR_EVENT_MASK_EXPOSUREGRMAPWINDOWINIT_WGRSETGCFOREGROUNDINIT_GC,YELLOWGRSETGCBACKGROUNDINIT_GC,BLUEGRTEXTINIT_W,INIT_GC,20,20,“INIT“,1,GR_TFASCIIVOIDTIME_DISPLAYCHARNGRSETGCFOREGROUNDTIME_SHI_GC,WHITEZIKUTIME_SHI_W,TIME_SHI_GC,N/10GRSETGCFOREGROUNDTIME_GE_GC,WHITEZIKUTIME_GE_W,TIME_GE_GC,N10IFDEFS3C44B0VOIDDELAYINTTINTI,JFORITI0IFORJ100J0JVOIDP6_7_INITRPCONENEXT_NUMTIMENUMTIME_DISPLAYTIMENUMIFEVENTTIMEBUTTONWIDSUB_WIFTIMER_STIMENUMIFTIMENUM6IFORJ3000J0JVOIDIO_INITVOIDRPCONE0X0500/配置PE6、PE7为输入,其它为输出RPCONA0X0/配置A口全部为输出RPDATA0X0/PA口初始为0VOIDTIMER3VOIDRTCFG00XF900RTCFG10X02000/8分频RTCNTB330000RTCMPB310000RTCON0X0A0000RTCON0X090000VOIDALL_INITVOIDIO_INITTIMER3NUM99TIME3_R_S1VOIDCMAINVOIDINTI0ALL_INITWHILE1KEYIFRTCNTO30RTCON0X0A0000RTCON0X090000/开启定时器IFNUM0SMGDIS_CODENUM106EXTERNINTNUMVOIDKEYVOIDIFPE_670X0/PE60,PE70,复位模块DELAY100IFPE_670X0ALL_INITWHILEPE_670X2/判断拨码开关复位IFPE_670X1/PE61,PE70DELAY100IFPE_670X1TIME3_R_STIME3_R_SWHILEPE_670X1IFNUM0TIME3_R_S1IFPE_670X2IFPE_670X2IFNUM1/数据下一位WHILEI0/16次，移至最后一个数码管图像界面编程DEFINEMWINCLUDECOLORSINCLUDE/INCLUDEINCLUDEINCLUDEINCLUDE“NANOXH“/DEFINES3C44B0IFDEFS3C44B0DEFINERPCONEVOLATILEUNSIGNED0X1D20028DEFINERPDATEVOLATILEUNSIGNED0X1D2002CDEFINERPUPEVOLATILEUNSIGNED0X1D20030VOIDSEND_NUMINTVOIDP6_7_INITCHARTAB0X3F,0X06,0X5B,0X4F,0X66,0X6D,0X7D,0X07,0X7F,0X6FENDIFSTATICGR_WINDOW_IDROOT_WSTATICGR_WINDOW_IDTIME_SHI_WSTATICGR_WINDOW_IDTIME_GE_WSTATICGR_WINDOW_IDR_S_WSTATICGR_WINDOW_IDADD_WSTATICGR_WINDOW_IDSUB_WSTATICGR_WINDOW_IDINIT_WSTATICGR_GC_IDROOT_GCSTATICGR_GC_IDTIME_SHI_GCSTATICGR_GC_IDTIME_GE_GCSTATICGR_GC_IDR_S_GCSTATICGR_GC_IDADD_GCSTATICGR_GC_IDSUB_GCSTATICGR_GC_IDINIT_GCSTATICGR_EVENTEVENTTIMECHARNEXT_NUMSTRUCTNOTEINTXINTYCHARR_SCHARNUMTIMEVOIDZIKUGR_WINDOW_IDWX,GR_GC_IDGC,CHARDGRCLEARWINDOWWX,0IFD0GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,5,85,10,50GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD1GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,65,85,10,50ELSEIFD2GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,5,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD3GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD4GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,65,85,10,50ELSEIFD5GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD6GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,5,85,10,50GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD7GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,65,85,10,50ELSEIFD8GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,5,85,10,50GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10ELSEIFD9GRFILLRECTWX,GC,15,15,50,10GRFILLRECTWX,GC,5,25,10,50GRFILLRECTWX,GC,65,25,10,50GRFILLRECTWX,GC,15,75,50,10GRFILLRECTWX,GC,65,85,10,50GRFILLRECTWX,GC,15,135,50,10VOIDWINDOW_INITROOT_WGRNEWWINDOWGR_ROOT_WINDOW_ID,0,0,320,220,0,BLACK,BLUEROOT_GCGRNEWGCGRMAPWINDOWROOT_WVOIDKEY_INITTIME_SHI_WGRNEWWINDOWROOT_W,70,0,100,150,0,BLACK,BLACKTIME_SHI_GCGRNEWGCGRMAPWINDOWTIME_SHI_WTIME_GE_WGRNEWWINDOWROOT_W,170,0,100,150,0,BLACK,BLACKTIME_GE_GCGRNEWGCGRMAPWINDOWTIME_GE_WTIMEX0TIMEY0TIMER_S0TIMENUM99NEXT_NUM99R_S_WGRNEWWINDOWROOT_W,5,180,70,30,1,BLUE,REDR_S_GCGRNEWGCGRSELECTEVENTSR_S_W,GR_EVENT_MASK_BUTTON_DOWN|GR_EVENT_MASK_EXPOSUREGRMAPWINDOWR_S_WGRSETGCFOREGROUNDR_S_GC,YELLOWGRSETGCBACKGROUNDR_S_GC,BLUEGRTEXTR_S_W,R_S_GC,5,20,“RUN/STOP“,1,GR_TFASCIIADD_WGRNEWWINDOWROOT_W,85,180,70,30,1,BLUE,REDADD_GCGRNEWGCGRSELECTEVENTSADD_W,GR_EVENT_MASK_BUTTON_DOWN|GR_EVENT_MASK_EXPOSUREGRMAPWINDOWADD_WGRSETGCFOREGROUNDADD_GC,YELLOWGRSETGCBACKGROUNDADD_GC,BLUEGRTEXTADD_W,ADD_GC,30,20,“1“,1,GR_TFASCIISUB_WGRNEWWINDOWROOT_W,165,180,70,30,1,BLUE,REDSUB