山东理工大学msp430考试常用程序缩印版

1、一 /*利用WDT的定时器模式控制led小灯L1以1s的间隔时间闪灭*/#include io430.hint main( void ) / Stop watchdog timer to prevent time out reset /WDTCTL = WDTPW + WDTHOLD; P6DIR |= BIT2;P6OUT |= BIT2; /关电平转换,P6.2连接了开发板上 /的电平转换芯片的使能端,与实际功能无关 WDTCTL=WDT_ADLY_1000;/设置看门狗ACLK定时器1000ms定时 IE1|=WDTIE;/开看门狗定时器中断 P2DIR|=BIT0; P2OUT|=BI

2、T0; _enable_interrupt();/_EINT();/开总中断 while(1) LPM0;/进入低功耗模式一，CPUOFF return 0;#pragma vector = WDT_VECTOR_interrupt void watchdog_timer() P2OUT=P2OUT;二 /*定时器A增计数模式下,ALK=32768HZ,MCLK=SMCLK=DCOCLK=800KHZ利用定时器溢出中断TAIE实现小灯L1每0.5秒闪灭一次,时钟选择ALK，8分频注意:TTAIE指TAR计数器溢出，从65535 到0的变化，由 TAIFG 引起的,TAIFG 一般进 TIMER

3、A1_VECTOR中断向量;*/#include io430.hint main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2DIR|=BIT0; P2OUT|=BIT0; _enable_interrupt(); TACTL=TASSEL_1+MC_1+ID_3+TAIE;/选择ACK，增计数模式， /8分频，使能定时器中断 CCR0=4095; /CCIE while(1) LPM0; return 0;#pragma vector=TIMERA1_VECTOR_in

4、terrupt void Timer_A() switch(TAIV) case 2:break; case 4:break; case 10:P2OUT=P2OUT;break; 三 /*定时器A增计数模式下,ALK=32768HZ,MCLK=SMCLK=DCOCLK=800KHZ实现小灯L1每0.5秒闪灭一次,时钟选择SMCLK，使用CCIE中断。注意：CCIE指捕获到相应信号（捕获模式下） ；定时时间到（比较模式下），由CCIFG引起的。CCIFG的话要看用的是哪个定时器，如果是CCR0的话就进TIMERA0_VECTOR，如果是CR1,CCR2则进TIMERA1_VECTOR*/#in

5、clude io430.hint main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2DIR|=BIT0; P2OUT|=BIT0; _enable_interrupt();/使能中断 TACTL=TASSEL_2+TACLR+MC_1+ID_3;/时钟选择SMCLK，计数器清零，增计数模式,8分频 CCTL0=CCIE;/CCR0中断允许 CCR0=50000; while(1) LPM0; return 0;#pragma vector=TIMERA0_VECTOR

6、_interrupt void Timer_A() P2OUT=P2OUT;四 /*使用CCR0定时中断。CCR0的值是可以改变的,当CCR0增加到0ffffh后自动把它清为0.实验效果为：灯先闪的越来越慢，后突然变得很快，再慢慢变慢。CCR0的值越大定时越长，当CCR0超过65535时会自动清理，使得定时时间很短。而通过高低电平的实时改变也可以用来做相应管脚的PWM输出*/#include io430.hint main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2DI

7、R|=BIT0; P2OUT|=BIT0; _enable_interrupt(); TACTL=TASSEL_2+TACLR+MC_1+ID_3;/时钟选择SMCLK，计数器清零，增计数模式,8分频 CCTL0=CCIE; CCR0=50000; while(1) LPM0; return 0;#pragma vector=TIMERA0_VECTOR_interrupt void Timer_A() P2OUT=P2OUT; CCR0+=1000;五/*定时器连续计数模式举例：1、在需要65536个时钟周期的定时器应用场合常用连续计数模式。定时器从当前值计数到0FFFFH后又从0开始计数。

8、当定时器从0FFFFH到0时设置标志位TAIFG。2、连续计数模式下，也可以通过改变TACCRx的值，产生独立的时间间隔，例如，可以在相应的比较寄存器TACCRx上加上一个时间差，不断地增加TACCRx的值，使定时器每到一定的时间间隔都能与TACCRx的值相等，从而使中断标志位置位，申请中断。以下代码验证了上面两种情况*/#include io430.hint main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2DIR=BIT0+BIT1; P2OUT=BIT0+BIT

9、1; TACTL=TASSEL_1+TACLR+MC_2+TAIE;/ACK，连续计数模式 CCTL0=CCIE; CCR0=32768/4; _enable_interrupt(); while(1) LPM0; return 0;#pragma vector=TIMERA0_VECTOR_interrupt void Time_A() P2OUT=BIT0; CCR0+=32768/4;#pragma vector=TIMERA1_VECTOR_interrupt void Time_a() switch(TAIV) case 2:break; case 4:break; case 10:

10、P2OUT=BIT1;break; 六 /*任务要求：利用定时器A产生4路周期信号，周期分别是4s，2s，1s和0.25s，四路周期信号分别从P2.0-P2.3口输出。*/#include io430.hint main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2DIR=BIT0+BIT1+BIT2+BIT3; P2OUT=BIT0+BIT1+BIT2+BIT3; TACTL=TASSEL_1+MC_2+TAIE;/ACK，连续计数模式，定时器溢出中断 CCTL0=CC

11、IE; CCTL1=CCIE; CCTL2=CCIE; CCR0=32768/8; CCR1=32768/2; CCR2=32768; _enable_interrupt(); while(1) LPM0; return 0;#pragma vector=TIMERA0_VECTOR_interrupt void Timer_A0() P2OUT=BIT3; CCR0+=32768/8;#pragma vector=TIMERA1_VECTOR_interrupt void Timer_A1() switch(TAIV) case 2: CCR1+=32768/2; P2OUT=BIT2; b

12、reak; case 4: CCR2+=32768; P2OUT=BIT1; break; case 10: P2OUT=BIT0; break; 七 四乘四按键#includeio430.h#defineucharunsignedchar#defineunitunsignedintvoiddelay(unittime)uniti;while(time-)for(i=100;i0;i-1);ucharkeyscan(void)ucharKeyNum;P1OUT=0X0F;if(P1IN&0X0F)!=0X0F)delay(100);if(P1IN&0X0F)!=0X0F)P1OUT=0XE0;

13、/判断哪列被拉低if(P1IN&0X0F)=0X0E)/判断哪行被拉低KeyNum=0;if(P1IN&0X0F)=0X0d)KeyNum=1;if(P1IN&0X0F)=0X0b)KeyNum=2;if(P1IN&0X0F)=0X07)KeyNum=3;P1OUT=0XD0;if(P1IN&0X0F)=0X0E)KeyNum=4;if(P1IN&0X0F)=0X0d)KeyNum=5;if(P1IN&0X0F)=0X0b)KeyNum=6;if(P1IN&0X0F)=0X07)KeyNum=7;P1OUT=0XB0;if(P1IN&0X0F)=0X0E)KeyNum=8;if(P1IN&0X

14、0F)=0X0d)KeyNum=9;if(P1IN&0X0F)=0X0b)KeyNum=10;if(P1IN&0X0F)=0X07)KeyNum=11;P1OUT=0X70;if(P1IN&0X0F)=0X0E)KeyNum=12;if(P1IN&0X0F)=0X0d)KeyNum=13;if(P1IN&0X0F)=0X0b)KeyNum=14;if(P1IN&0X0F)=0X07)KeyNum=15;elseKeyNum=KeyNum;returnKeyNum;intmain(void)/StopwatchdogtimertopreventtimeoutresetWDTCTL=WDTPW+W

15、DTHOLD;P2SEL=0X00;P2DIR=0XFF;P1SEL=0X00;P1DIR=0XF0;while(1)P2OUT=keyscan();八 0-99#include io430.h#define uchar unsigned char #define uint unsigned int#define key (P1IN&0X01)uint keysign=0; void delay(int a) int i,j;for(i=0;ia;i+)for(j=0;j200;j+);void keyscan() if(key!=1) delay(10); if(key!=1) if(key

16、sign=1) keysign=0; else keysign=1; delay(1000); uchar table=0x3F,0X06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x6f,0x7f;uchar table2=0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef; int main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; int a,b,c; P4DIR=0xff; P5DIR=BIT5;

17、P6DIR=BIT6; while(1) for(a=0;a10;a+) for(b=0;b10;b+) for(c=0;c10;c+) P4OUT=tablec; P6OUT|=BIT6; P6OUT=BIT6; P5OUT|=BIT5; P5OUT=BIT5; P4OUT=0xfb; P5OUT=BIT5; delay(20); P4OUT=table2b; P6OUT|=BIT6; P6OUT=BIT6; P5OUT|=BIT5; P5OUT=BIT5; P4OUT=0xfd; P5OUT=BIT5; delay(20); P4OUT=tablea; P6OUT|=BIT6; P6OUT

18、=BIT6; P5OUT|=BIT5; P5OUT=BIT5; P4OUT=0xfe; P5OUT=BIT5; delay(20);keyscan();if(a=9&b=9)break; return 0; 九 数码管与定时器测试#include io430.h#define unit unsinged int#define uchar unsigned char#define wei_h P5OUT|= BIT5#define wei_l P5OUT&= BIT5#define duan_l P6OUT &= BIT6#define duan_h P6OUT |= BIT6unit i=0;

19、unit a=0;void key(unit i) P4OUT=YOUi; duan_h;duan_l; P4OUT=0XFD; vai_h;vai_l; delay(3);void key1(unit a) P4OUT=WUa; duan_h;duan_l; P4OUT=0XFE;uchar WU=0X3F,0X06,0X5B,0X4F,0X66,0X6D,0X7D,0X07,0X7F,0X6F;uchar YOU=0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef;int main( void ) / Stop watchdog timer

20、to prevent time out reset WDTCTL = WDTPW + WDTHOLD; TACTL=TASSEL_2+ID_3+MC_1+TACLR; CCTL0=CCIE; CCR0=50000; P4DIR=0XFF;P5DIR|=BIT5;P6DIR|=BIT6;_enable_interrupt();while(1) LPM0; return 0;#pragma vector=TIMERA0_VECTOR_interrupt void timera()int c; for(c=0;c10;c+) P4OUT=WUc; duan_h;duan_l; P4OUT=0XFB;

21、 vai_h;vai_l; delay(3); key(i); key1(a); i+; a+;十数码管#include io430.h#define uchar unsigned char#define uint unsigned int#define duan_h P6OUT|=BIT6#define duan_l P6OUT&=BIT6#define weixuan_h P5OUT|=BIT5#define weixuan_l P5OUT&=BIT5/共阴级数码管字形代码表uchar table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0

22、x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00;void delay(uint time);int main( void ) uchar i; / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P4DIR=0XFF; P5DIR=0XFF; P6DIR=0XFF; while(1) for(i=0;i=7;i+) P4OUT=tablei; duan_h; duan_l; P4OUT=(BIT0i); weixuan_h; weixuan_l; delay(200);

23、 return 0;void delay(uint time) uint a,b; for(a=0;a=time;a+) for(b=0;b=300;b+);十一定时器中断#include io430.hint main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2DIR|=BIT0;P2DIR|=BIT1;P2OUT|=BIT0;P2OUT|=BIT1;_enable_interrupt();TACTL=TASSEL_2 +ID_3+MC_2+TACLR+TAIE;CC

24、TL0=CCIE;CCTL1=CCIE;CCR0=10000;CCR1=5000;while(1) LPM0; return 0;#pragma vector=TIMERA0_VECTOR_interrupt void timea() P2OUT=BIT0; CCR0+=10000;#pragma vector=TIMERA1_VECTOR_interrupt void timeb() switch(TAIV) case 2: P2OUT=BIT1; CCR1+=5000;break;case 4:break;case 10:break; 十二串口发送/*程序功能：MCU不停向PC机发送数据,

25、在屏幕上显示0127对应 的ASCII字符-通信格式：N.8.1, 2400-测试说明：打开串口调试精灵，正确设置通信格式，观察屏幕*/#include typedef unsigned char uchar;typedef unsigned int uint;void Delays(void);void PutString(uchar *ptr);/*主函数*/void main(void) uchar *tishi = MCU sends 0127 to PC and the n screen will display their corresponding n ASCII code as

26、 follows:; uchar value = 0; /*下面六行程序关闭所有的IO口*/ P1DIR = 0XFF;P1OUT = 0XFF; P2DIR = 0XFF;P2OUT = 0XFF; P3DIR = 0XFF;P3OUT = 0XFF; P4DIR = 0XFF;P4OUT = 0XFF; P5DIR = 0XFF;P5OUT = 0XFF; P6DIR = 0XFF;P6OUT = 0XFF; WDTCTL = WDTPW + WDTHOLD; / 关狗 P6DIR |= BIT2;P6OUT |= BIT2; / 关电平转换 P3SEL |= 0x30; / P3.4,5

27、选择为UART收发端口 ME1 |= UTXE0 + URXE0; / 使能USART0收发 UCTL0 |= CHAR; / 8-bit character UTCTL0 |= SSEL0; / UCLK = ACLK UBR00 = 0x0D; / 32k/2400 - 13.65 UBR10 = 0x00; / UMCTL0 = 0x6B; / Modulation UCTL0 &= SWRST; / 初始化UART0状态机 IE1 |= URXIE0; / 使能接收中断 _EINT(); PutString(tishi); while(1) while (!(IFG1 & UTXIFG

28、0); TXBUF0 = value+; value &= 0x7f; / 保证value的数值小于128 while (!(IFG1 & UTXIFG0); TXBUF0 = n; Delays(); /*函数名称：PutSting功 能：向PC机发送字符串参 数：无返回值 ：无*/void PutString(uchar *ptr) while(*ptr != 0) while (!(IFG1 & UTXIFG0); / TX缓存空闲？ TXBUF0 = *ptr+; / 发送数据 while (!(IFG1 & UTXIFG0); TXBUF0 = n;/*函数名称：Delays功 能：

29、延时一会参 数：无返回值 ：无*/void Delays(void) uchar i=20; uint j; while(i-) j=2000; while(j-); 十三串口回发/*程序功能：接收来自PC机的字符，然后重新发送给PC机-通信格式：N.8.1, 9600 无校验，8个数据位，1个停止位，波特率9600-测试说明：打开串口调试助手，正确设置通信格式，向学习板 发送一个字符，观察是否收到回发的字符，以及是否 正确*/#include /*主函数*/void main(void) /*下面六行程序关闭所有的IO口*/ P1DIR = 0XFF;P1OUT = 0XFF; P2DIR

30、= 0XFF;P2OUT = 0XFF; P3DIR = 0XFF;P3OUT = 0XFF; P4DIR = 0XFF;P4OUT = 0XFF; P5DIR = 0XFF;P5OUT = 0XFF; P6DIR = 0XFF;P6OUT = 0XFF; WDTCTL = WDTPW + WDTHOLD; / 关闭看门狗 P6DIR |= BIT2;P6OUT |= BIT2; /关闭电平转换 P3SEL |= 0x30; / 选择P3.4和P3.5做UART通信端口 ME1 |= UTXE0 + URXE0; / 使能USART0的发送和接受 UCTL0 |= CHAR; / 选择8位字符

31、 UTCTL0 |= SSEL0; / UCLK = ACLK UBR00 = 0x03; / 波特率9600 UBR10 = 0x00; / UMCTL0 = 0x4A; / Modulation UCTL0 &= SWRST; / 初始化UART状态机 IE1 |= URXIE0; / 使能USART0的接收中断 while(1) _EINT(); /打开全局中断 LPM1; /进入LPM1模式 while (!(IFG1 & UTXIFG0); /等待以前的字符发送完毕 TXBUF0 = RXBUF0; /将收到的字符发送出去 /*函数名称：UART0_RXISR功 能：UART0的接收

32、中断服务函数，在这里唤醒 CPU，使它退出低功耗模式参 数：无返回值 ：无*/#pragma vector = UART0RX_VECTOR_interrupt void UART0_RXISR(void) LPM1_EXIT; /退出低功耗模式十四串口键盘/*程序功能：MCU通过串口向PC机发送4X4键盘的键值-通信格式：N.8.1, 9600-测试说明：打开串口调试助手，正确设置通信格式，按动4X4 键盘观察屏幕显示的按键键值。*/#include #include keypad.h#include keypad.C/引用外部变量的声明extern unsigned char key_Pr

33、essed; extern unsigned char key_val; extern unsigned char key_Flag; void PutString(uchar *ptr);void PutChar(uchar zifu);/*主函数*/void main(void) /*下面六行程序关闭所有的IO口*/ P1DIR = 0XFF;P1OUT = 0XFF; P2DIR = 0XFF;P2OUT = 0XFF; P3DIR = 0XFF;P3OUT = 0XFF; P4DIR = 0XFF;P4OUT = 0XFF; P5DIR = 0XFF;P5OUT = 0XFF; P6D

34、IR = 0XFF;P6OUT = 0XFF; uchar *tishi = This Keys ID is:; P6DIR |= BIT2;P6OUT |= BIT2; /关闭电平转换 WDTCTL = WDTPW + WDTHOLD; / Stop WDT P3SEL |= 0x30; / P3.4,5 = USART0 TXD/RXD ME1 |= UTXE0; / Enable USART0 TXD/RXD UCTL0 |= CHAR; / 8-bit character UTCTL0 |= SSEL0; / UCLK = ACLK UBR00 = 0x03; / 32k/9600 -

35、 3.41 UBR10 = 0x00; / UMCTL0 = 0x4A; / Modulation UCTL0 &= SWRST; / Initialize USART state machine Init_Keypad(); /初始化键盘端口 while(1) Key_Event(); if(key_Flag = 1) key_Flag = 0; PutString(tishi); PutChar(key_val); /*函数名称：PutSting功 能：向PC机发送字符串参 数：ptr-指向发送字符串的指针返回值 ：无*/void PutString(uchar *ptr) while(*

36、ptr != 0) while (!(IFG1 & UTXIFG0); / TX缓存空闲？ TXBUF0 = *ptr+; / 发送数据 while (!(IFG1 & UTXIFG0); TXBUF0 = n;/*函数名称：PutChar功 能：向PC机发送一个字符对应的ASCII码参 数：zifu-发送的字符返回值 ：无*/void PutChar(uchar zifu) while (!(IFG1 & UTXIFG0); if(zifu 9) /发送键值116对应的ASCII码 TXBUF0 = 0x30 + zifu/10; while (!(IFG1 & UTXIFG0); TXBU

37、F0 = 0x30 + zifu%10; else TXBUF0 = 0x30 + zifu; while (!(IFG1 & UTXIFG0); TXBUF0 = n; /发送回车字符十五 LED#include io430.hvoid delay(unsigned int time);/unsigned int t;int main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2SEL=0X00;/P2口为基本IO/P2SEL=BIT0;P2SEL=0XFE; P2DI

38、R=0XFF;/P2口为输出口 P2OUT=0XFF;/初始化小灯为全灭 while(1) P2OUT=0XFE;/点亮 delay(200); P2OUT=0XFF;/熄灭 delay(200); return 0;void delay(unsigned int time) unsigned int a,b; for(a=0;atime;a+) for(b=0;b300;b+);十六/*捕获/比较模块之捕获举例：ACLK=32768Hz，MCLK=SMCLK=DCOCLK=800KHz,经过8分频后作为定时器TA的时钟源，定时器TA工作在连续计数模式。待捕获方波信号由软件产生，经P3.0输出

39、，输出信号同时接入CCI0A(P1.1)和CCI1A(P1.2),由CCR0确定信号占空比，由CCR1获取信号周期*/#include io430.h#define uint unsigned int#define uchar unsigned char uint lastccr0,lastccr1;uint cycle=0;uint Duty_Ratio=0;int main( void ) uint i; / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; TACTL=TASSEL_1+MC_2+TACLR;/ACLK,连续计数模式，计数器清空 CCTL0=CM_3+CCIS_0+SCS+CAP+CCIE;/选择捕获模式，上升沿和下降沿 /都捕获，异步捕