嵌入式系统试卷A(07).doc

南京工业大学 嵌入式系统设计 试题（A）卷（闭） 2010-2011 学年第 一 学期 使用班级 测控0701-02班级 学号 姓名题号一(20分)二(20分)三(60分)总分得分一、 选择题（每题2分，共20分）1. 下列说法正确的是：（ ）ALPC2131是8位的单片机。BLPC2131是16位的单片机。CLPC2131基于ARM7，使用了三级流水线结构。DLPC2131基于ARM10，使用了五级流水线结构。2. 下列说法正确的是：（ ）ALPC2131的串行口含有FIFO。BLPC2131没有串行口。CLPC2131的任何引脚均可以作为串行口。DLPC2131的任何IO口均可以作为串行口。3. LPC2131中断优先级别最高的是（ ）。AFIQ B向量IRQC非向量IRQ D串行中断4. 以下哪个操作系统不能移植在LPC2131中。（ ）AuC/OS-I BuC/OS-II CuC/Linux Dwin20005. 在C51编程环境下，“unsigned int temp ;” 语句定义了一个16位无符号变量，而在MDK（ARM）编程环境下，该语句定义的是： ( )。A32位无符号变量 B32位有符号变量 C32位浮点变量 D仍然是16位无符号变量6. 下面哪种设备对于LPC2131来说是输出设备。( )A气体检测器 B 温度传感器 C键盘 D发光二极管7. LPC2131共有( )个通用IO引脚。 A2 B47 C100 D655368. 以下哪种操作模式不能直接修改程序状态寄存器( )。A管理模式 B中断模式 C用户模式 D系统模式9. 为保证键扫描的正确，需要进行去抖动处理，当采用软件去抖动时，通常采用的延时时间为（ ）。 A1030毫秒 B 13秒 C1030秒 D13分钟10. LPC2131的主频最大为（ ）A11.0592MHz B60MHz C32.768KHz D3.4GHz 二、 程序分析题（每空1分，共40分）1. 以下是LPC2131在ucos操作系统下实现可调时电子钟功能主程序代码。（ucos代码忽略），请补充完整。#include includes.h_#defineFOSC 12000000 _TaskStkLengh60 OS_EVENT *sem;INT8U error = OS_NO_ERR;enum KEY_NONOKEY, KEY_UP, KEY_DOWN,KEY_ENTER,KeyNo; _ SHOW_STATE SHOW_NORMAL, SHOW_SEC_ADJ, SHOW_MIN_ADJ, _,ShowState;enum LED_GOOUT = 10,; _ Task0Stk _;OS_STKTaskKeyStk TaskStkLengh;OS_STKTaskShowStk TaskStkLengh; OS_STK_ TaskStkLengh;INT8U Hour = 0;INT8U Minute = 0;INT8U _ = 0;INT8U LEDBuffer6 = 0,0,0,0,0,0;const _ LEDMAP = _,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,;void Timer0_Init(void);void Task0(void *pdata);void TaskKey(void *pdata); void TaskShow(void *pdata); void TaskDisplay(_); INT8U GetKey(void);void ShowNormal(void);void ShowSecondAdj(void);void ShowMinuteAdj(void);void ShowHourAdj(void);extern void Timer0_Handler(void); int _ (void)OSInit ();sem = OSSemCreate(0); OSTaskCreate (Task0,(void *)0, &Task0StkTaskStkLengh - 1, 3);OSStart ();return 0;void Task0(void *pdata)Timer0_Init();OSTaskCreate (_,(void *)0, &TaskKeyStkTaskStkLengh - 1, 4);_ (TaskShow,(void *)0, &TaskShowStkTaskStkLengh - 1, 5);OSTaskCreate (TaskDisplay,(void *)0, &TaskDisplayStkTaskStkLengh - 1, 6);ShowNormal();_ = SHOW_NORMAL; while (1)_ (100);if(ShowState = SHOW_NORMAL)_+;if(Second = 60)Second = 0;Minute+;if(Minute = 60)Minute = 0;Hour+;if(Hour = 24)_ = 0;ShowNormal(); void TaskShow(void *pdata) while(1)OSSemPend(sem, 0, &error);if(KeyNo)_ (ShowState)case _:if(KeyNo = KEY_ENTER)ShowState = SHOW_SEC_ADJ;ShowSecondAdj(); break;case SHOW_SEC_ADJ:switch(KeyNo)case _:ShowState = SHOW_MIN_ADJ;ShowMinuteAdj();break;case KEY_UP:Second+;if(60 = Second)Second = 0;ShowSecondAdj();break;case KEY_DOWN:if(0 = Second)Second = _;elseSecond-; ShowSecondAdj();break;break;case _:switch(KeyNo)case KEY_ENTER:ShowState = SHOW_HOUR_ADJ;ShowHourAdj();break;case KEY_UP:Minute+;if(60 = Minute)Minute = 0;ShowMinuteAdj();_;case KEY_DOWN:if(0 = Minute)Minute = 59;elseMinute-;ShowMinuteAdj();break;break;case SHOW_HOUR_ADJ:switch(KeyNo)case KEY_ENTER:ShowState = SHOW_NORMAL;_;break;case _:Hour+;if(24 = Hour)Hour = 0;ShowHourAdj();break;case KEY_DOWN:if(0 = Hour)Hour = 23;elseHour-;ShowHourAdj();_;break; void TaskDisplay(void *pdata)INT8U i;INT16U j;INT32U outbit;_ = 0x00003fff;/设置GPIO的方向while (1)outbit = 1;for(i=0;i6;i+)IO0CLR = 0x0000ff00;IO0SET = LEDMAPLEDBufferi;IO0CLR = _ LEDBufferi;_ = outbit 8;IO0CLR = (outbit 8) & 0x00ff00;for(j=0;j5000;j+);_ = 1;void TaskKey(void *pdata) INT8U _;while(1)getkey = _ ();if(getkey)KeyNo = getkey;OSSemPost(sem);OSTimeDly(1); void Timer0_Init(void) OS_ENTER_CRITICAL(); VICIntEnClr = 0xffffffff; T0TC = 0; T0PR = 0; T0MCR = 0X03; T0MR0 = FOSC * 5 / 4 / OS_TICKS_PER_SEC; T0TCR = 0x01; VICVectCntl0 = 0x20 | 0x04;VICVectAddr0 = (unsigned int) Timer0_Handler;VICIntEnable = 1 0x04; _ (); void Timer0_Exception(void) T0IR = 0x01; VICVectAddr = 0; OSTimeTick(); INT8U GetKey(void)INT8U key;if( IO0PIN & (7 16)OSTimeDly(2);if( IO0PIN & (1 16)key = 1;else if( IO0PIN & (_)key = 2;else if( IO0PIN & (1 18)key = 3;elsereturn(0);while(IO0PIN & (7 16)OSTimeDly(1); return(key);_ (0); void ShowNormal(void) _ 5 = Second % 10;LEDBuffer4 = Second / 10;LEDBuffer3 = Minute % 10;LEDBuffer2 = Minute / 10;LEDBuffer1 = Hour % 10;LEDBuffer0 = Hour / 10;void ShowSecondAdj(void) LEDBuffer_ = Second % 10;LEDBuffer4 = Second / 10;LEDBuffer3 = LED_GOOUT;LEDBuffer2 = LED_GOOUT;LEDBuffer1 = LED_GOOUT;LEDBuffer0 = LED_GOOUT;void ShowMinuteAdj(void)LEDBuffer5 = _;LEDBuffer4 = LED_GOOUT;LEDBuffer3 = Minute % 10;LEDBuffer2 = Minute / 10;LEDBuffer1 = LED_GOOUT;LEDBuffer0 = LED_GOOUT; void ShowHourAdj(void)LEDBuffer5 = LED_GOOUT;LEDBuffer4 = LED_GOOUT;LEDBuffer3 = LED_GOOUT;LEDBuffe