山東理工大學msp430考試常用程序縮印版3頁

1、一 /*利用WDT的定時器模式控制led小燈L1以1s的間隔時間閃滅*/#include "io430.h"int main( void ) / Stop watchdog timer to prevent time out reset /WDTCTL = WDTPW + WDTHOLD; P6DIR |= BIT2;P6OUT |= BIT2; /關電平轉換,P6.2連接了開發(fā)板上 /的電平轉換芯片的使能端,與實際功能無關 WDTCTL=WDT_ADLY_1000;/設置看門狗ACLK定時器1000ms定時 IE1|=WDTIE;/開看門狗定時器中斷 P2DIR|=BIT

2、0; P2OUT|=BIT0; _enable_interrupt();/_EINT();/開總中斷 while(1) LPM0;/進入低功耗模式一，CPUOFF return 0;#pragma vector = WDT_VECTOR_interrupt void watchdog_timer() P2OUT=P2OUT;二 /*定時器A增計數(shù)模式下,ALK=32768HZ,MCLK=SMCLK=DCOCLK=800KHZ利用定時器溢出中斷TAIE實現(xiàn)小燈L1每0.5秒閃滅一次,時鐘選擇ALK，8分頻注意:TTAIE指TAR計數(shù)器溢出，從65535 到0的變化，由 TAIFG 引起的,TAI

3、FG 一般進 TIMERA1_VECTOR中斷向量;*/#include "io430.h"int 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;/選擇ACK，增計數(shù)模式， /8分頻，使能定時器中斷 CCR0=4095; /CCIE while(1) LPM0; return 0;#pragma

4、vector=TIMERA1_VECTOR_interrupt void Timer_A() switch(TAIV) case 2:break; case 4:break; case 10:P2OUT=P2OUT;break; 三 /*定時器A增計數(shù)模式下,ALK=32768HZ,MCLK=SMCLK=DCOCLK=800KHZ實現(xiàn)小燈L1每0.5秒閃滅一次,時鐘選擇SMCLK，使用CCIE中斷。注意：CCIE指捕獲到相應信號（捕獲模式下） ；定時時間到（比較模式下），由CCIFG引起的。CCIFG的話要看用的是哪個定時器，如果是CCR0的話就進TIMERA0_VECTOR，如果是CR1,C

5、CR2則進TIMERA1_VECTOR*/#include "io430.h"int main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2DIR|=BIT0; P2OUT|=BIT0; _enable_interrupt();/使能中斷 TACTL=TASSEL_2+TACLR+MC_1+ID_3;/時鐘選擇SMCLK，計數(shù)器清零，增計數(shù)模式,8分頻 CCTL0=CCIE;/CCR0中斷允許 CCR0=50000; while(1) LPM0; re

6、turn 0;#pragma vector=TIMERA0_VECTOR_interrupt void Timer_A() P2OUT=P2OUT;四 /*使用CCR0定時中斷。CCR0的值是可以改變的,當CCR0增加到0ffffh后自動把它清為0.實驗效果為：燈先閃的越來越慢，后突然變得很快，再慢慢變慢。CCR0的值越大定時越長，當CCR0超過65535時會自動清理，使得定時時間很短。而通過高低電平的實時改變也可以用來做相應管腳的PWM輸出*/#include "io430.h"int main( void ) / Stop watchdog timer to preve

7、nt time out reset WDTCTL = WDTPW + WDTHOLD; P2DIR|=BIT0; P2OUT|=BIT0; _enable_interrupt(); TACTL=TASSEL_2+TACLR+MC_1+ID_3;/時鐘選擇SMCLK，計數(shù)器清零，增計數(shù)模式,8分頻 CCTL0=CCIE; CCR0=50000; while(1) LPM0; return 0;#pragma vector=TIMERA0_VECTOR_interrupt void Timer_A() P2OUT=P2OUT; CCR0+=1000;五/*定時器連續(xù)計數(shù)模式舉例：1、在需要6553

8、6個時鐘周期的定時器應用場合常用連續(xù)計數(shù)模式。定時器從當前值計數(shù)到0FFFFH后又從0開始計數(shù)。當定時器從0FFFFH到0時設置標志位TAIFG。2、連續(xù)計數(shù)模式下，也可以通過改變TACCRx的值，產(chǎn)生獨立的時間間隔，例如，可以在相應的比較寄存器TACCRx上加上一個時間差，不斷地增加TACCRx的值，使定時器每到一定的時間間隔都能與TACCRx的值相等，從而使中斷標志位置位，申請中斷。以下代碼驗證了上面兩種情況*/#include "io430.h"int main( void ) / Stop watchdog timer to prevent time out res

9、et WDTCTL = WDTPW + WDTHOLD; P2DIR=BIT0+BIT1; P2OUT=BIT0+BIT1; TACTL=TASSEL_1+TACLR+MC_2+TAIE;/ACK，連續(xù)計數(shù)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 voi

10、d Time_a() switch(TAIV) case 2:break; case 4:break; case 10:P2OUT=BIT1;break; 六 /*任務要求：利用定時器A產(chǎn)生4路周期信號，周期分別是4s，2s，1s和0.25s，四路周期信號分別從P2.0-P2.3口輸出。*/#include "io430.h"int main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2DIR=BIT0+BIT1+BIT2+BIT3; P2OUT=BI

11、T0+BIT1+BIT2+BIT3; TACTL=TASSEL_1+MC_2+TAIE;/ACK，連續(xù)計數(shù)模式，定時器溢出中斷 CCTL0=CCIE; 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_int

12、errupt void Timer_A1() switch(TAIV) case 2: CCR1+=32768/2; P2OUT=BIT2; break; case 4: CCR2+=32768; P2OUT=BIT1; break; case 10: P2OUT=BIT0; break; 七 四乘四按鍵#include "io430.h"#define uchar unsigned char#define unit unsigned intvoid delay(unit time)u

13、nit i;while(time-)for(i=100;i>0;i-1);uchar keyscan(void)  uchar KeyNum;  P1OUT=0X0F;  if(P1IN&0X0F)!=0X0F)      delay(100);    if(P1IN&0X0F)!=0X0F)        

14、;  P1OUT=0XE0;                        /判斷哪列被拉低      if(P1IN&0X0F)=0X0E)           

15、;/判斷哪行被拉低        KeyNum= 0;          if(P1IN&0X0F)=0X0d)        KeyNum= 1;      if(P1IN&0X0F)=0X0b)    

16、;    KeyNum= 2;      if(P1IN&0X0F)=0X07)        KeyNum= 3;        P1OUT=0XD0;      if(P1IN&0X0F)=0X0E)   &#

17、160;    KeyNum= 4;      if(P1IN&0X0F)=0X0d)        KeyNum= 5;      if(P1IN&0X0F)=0X0b)        KeyNum= 6;  &

18、#160;   if(P1IN&0X0F)=0X07)        KeyNum= 7;             P1OUT=0XB0;      if(P1IN&0X0F)=0X0E)       &

19、#160;KeyNum= 8;      if(P1IN&0X0F)=0X0d)        KeyNum= 9;      if(P1IN&0X0F)=0X0b)        KeyNum= 10;      

20、;if(P1IN&0X0F)=0X07)        KeyNum= 11;          P1OUT=0X70;      if(P1IN&0X0F)=0X0E)        KeyNum= 12;   

21、   if(P1IN&0X0F)=0X0d)        KeyNum= 13;      if(P1IN&0X0F)=0X0b)        KeyNum= 14;      if(P1IN&0X0F)=0X07)  &

22、#160;     KeyNum= 15;        else          KeyNum=KeyNum;        return KeyNum;int main( void )  / Stop&#

23、160;watchdog timer to prevent time out reset  WDTCTL = WDTPW + WDTHOLD; P2SEL=0X00; P2DIR=0XFF; P1SEL=0X00; P1DIR=0XF0; while(1)    P2OUT=keyscan(); 八 0-99#include "io430.h"#define

24、 uchar unsigned char #define uint unsigned int#define key (P1IN&0X01)uint keysign=0; void delay(int a) int i,j;for(i=0;i<a;i+)for(j=0;j<200;j+);void keyscan() if(key!=1) delay(10); if(key!=1) if(keysign=1) keysign=0; else keysign=1; delay(1000); uchar table=0x3F,0X06,0x5B,0x4F,0x66,0x6D,0x

25、7D,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; P6DIR=BIT6; while(1) for(a=0;a<10;a+) for(b=0;b<10;b+) for(c=0;c<10;c+) P4OUT=table

26、c; 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=BIT6; P5OUT|=BIT5; P5OUT=BIT5; P4OUT=0xfe; P5OUT=BIT5; delay(20);keyscan();if(a

27、=9&&b=9)break; return 0; 九 數(shù)碼管與定時器測試#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;unit a=0;void key(unit i) P4OUT=YOUi; duan_h;duan_l

28、; 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 to prevent time out reset WDTCTL = WDTPW + WDTHOLD;

29、 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;c<10;c+) P4OUT=WUc; duan_h;duan_l; P4OUT=0XFB; vai_h;vai_l; delay(3); key(i); key1(a); i+; a+

30、;十數(shù)碼管#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/共陰級數(shù)碼管字形代碼表uchar table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x7

31、9,0x71,0x00;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=(BIT0<<i); weixuan_h; weixuan_l; delay(200); return 0;void

32、delay(uint time) uint a,b; for(a=0;a<=time;a+) for(b=0;b<=300;b+);十一定時器中斷#include "io430.h"int 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+TA

33、IE;CCTL0=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; 十二串口發(fā)送/*程序功能：MCU不停向PC機

34、發(fā)送數(shù)據(jù),在屏幕上顯示0127對應 的ASCII字符-通信格式：N.8.1, 2400-測試說明：打開串口調試精靈，正確設置通信格式，觀察屏幕*/#include <msp430x14x.h>typedef unsigned char uchar;typedef unsigned int uint;void Delays(void);void PutString(uchar *ptr);/*主函數(shù)*/void main(void) uchar *tishi = " MCU sends 0127 to PC and the n screen will display the

35、ir corresponding n ASCII code as follows:" uchar value = 0; /*下面六行程序關閉所有的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; / 關狗 P6DIR |= BIT2;P6OUT |=

36、BIT2; / 關電平轉換 P3SEL |= 0x30; / P3.4,5選擇為UART收發(fā)端口 ME1 |= UTXE0 + URXE0; / 使能USART0收發(fā) 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狀態(tài)機 IE1 |= URXIE0; / 使能接收中斷 _EINT(); PutStrin

37、g(tishi); while(1) while (!(IFG1 & UTXIFG0); TXBUF0 = value+; value &= 0x7f; / 保證value的數(shù)值小于128 while (!(IFG1 & UTXIFG0); TXBUF0 = 'n' Delays(); /*函數(shù)名稱：PutSting功 能：向PC機發(fā)送字符串參 數(shù)：無返回值 ：無*/void PutString(uchar *ptr) while(*ptr != '0') while (!(IFG1 & UTXIFG0); / TX緩存空閑？ T

38、XBUF0 = *ptr+; / 發(fā)送數(shù)據(jù) while (!(IFG1 & UTXIFG0); TXBUF0 = 'n'/*函數(shù)名稱：Delays功 能：延時一會參 數(shù)：無返回值 ：無*/void Delays(void) uchar i=20; uint j; while(i-) j=2000; while(j-); 十三串口回發(fā)/*程序功能：接收來自PC機的字符，然后重新發(fā)送給PC機-通信格式：N.8.1, 9600 無校驗，8個數(shù)據(jù)位，1個停止位，波特率9600-測試說明：打開串口調試助手，正確設置通信格式，向學習板 發(fā)送一個字符，觀察是否收到回發(fā)的字符，以及是否

39、 正確*/#include <msp430x14x.h>/*主函數(shù)*/void main(void) /*下面六行程序關閉所有的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; / 關閉看門狗 P6DIR |= BIT2;P6OUT |= BIT2;

40、 /關閉電平轉換 P3SEL |= 0x30; / 選擇P3.4和P3.5做UART通信端口 ME1 |= UTXE0 + URXE0; / 使能USART0的發(fā)送和接受 UCTL0 |= CHAR; / 選擇8位字符 UTCTL0 |= SSEL0; / UCLK = ACLK UBR00 = 0x03; / 波特率9600 UBR10 = 0x00; / UMCTL0 = 0x4A; / Modulation UCTL0 &= SWRST; / 初始化UART狀態(tài)機 IE1 |= URXIE0; / 使能USART0的接收中斷 while(1) _EINT(); /打開全局中斷 L

41、PM1; /進入LPM1模式 while (!(IFG1 & UTXIFG0); /等待以前的字符發(fā)送完畢 TXBUF0 = RXBUF0; /將收到的字符發(fā)送出去 /*函數(shù)名稱：UART0_RXISR功 能：UART0的接收中斷服務函數(shù)，在這里喚醒 CPU，使它退出低功耗模式參 數(shù)：無返回值 ：無*/#pragma vector = UART0RX_VECTOR_interrupt void UART0_RXISR(void) LPM1_EXIT; /退出低功耗模式十四串口鍵盤/*程序功能：MCU通過串口向PC機發(fā)送4X4鍵盤的鍵值-通信格式：N.8.1, 9600-測試說明：打開串

42、口調試助手，正確設置通信格式，按動4X4 鍵盤觀察屏幕顯示的按鍵鍵值。*/#include <msp430x14x.h>#include "keypad.h"#include "keypad.C"/引用外部變量的聲明extern unsigned char key_Pressed; extern unsigned char key_val; extern unsigned char key_Flag; void PutString(uchar *ptr);void PutChar(uchar zifu);/*主函數(shù)*/void main(vo

43、id) /*下面六行程序關閉所有的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; uchar *tishi = "This Key's ID is:" P6DIR |= BIT2;P6OUT |= BIT2; /關閉電平轉換 WDTCTL = WDTPW + WDTHOLD; / S

44、top 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 - 3.41 UBR10 = 0x00; / UMCTL0 = 0x4A; / Modulation UCTL0 &= SWRST; / Initialize USART state machine Init_Keypad(); /初始化鍵

45、盤端口 while(1) Key_Event(); if(key_Flag = 1) key_Flag = 0; PutString(tishi); PutChar(key_val); /*函數(shù)名稱：PutSting功 能：向PC機發(fā)送字符串參 數(shù)：ptr-指向發(fā)送字符串的指針返回值 ：無*/void PutString(uchar *ptr) while(*ptr != '0') while (!(IFG1 & UTXIFG0); / TX緩存空閑？ TXBUF0 = *ptr+; / 發(fā)送數(shù)據(jù) while (!(IFG1 & UTXIFG0); TXBUF0

46、 = 'n'/*函數(shù)名稱：PutChar功 能：向PC機發(fā)送一個字符對應的ASCII碼參 數(shù)：zifu-發(fā)送的字符返回值 ：無*/void PutChar(uchar zifu) while (!(IFG1 & UTXIFG0); if(zifu > 9) /發(fā)送鍵值116對應的ASCII碼 TXBUF0 = 0x30 + zifu/10; while (!(IFG1 & UTXIFG0); TXBUF0 = 0x30 + zifu%10; else TXBUF0 = 0x30 + zifu; while (!(IFG1 & UTXIFG0); T

47、XBUF0 = 'n' /發(fā)送回車字符十五 LED#include "io430.h"void delay(unsigned int time);/unsigned int t;int main( void ) / Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; P2SEL=0X00;/P2口為基本IO/P2SEL=BIT0;P2SEL=0XFE; P2DIR=0XFF;/P2口為輸出口 P2OUT=0XFF;/初始化小燈為全滅 while(1) P2OUT=0X

48、FE;/點亮 delay(200); P2OUT=0XFF;/熄滅 delay(200); return 0;void delay(unsigned int time) unsigned int a,b; for(a=0;a<time;a+) for(b=0;b<300;b+);十六/*捕獲/比較模塊之捕獲舉例：ACLK=32768Hz，MCLK=SMCLK=DCOCLK=800KHz,經(jīng)過8分頻后作為定時器TA的時鐘源，定時器TA工作在連續(xù)計數(shù)模式。待捕獲方波信號由軟件產(chǎn)生，經(jīng)P3.0輸出，輸出信號同時接入CCI0A(P1.1)和CCI1A(P1.2),由CCR0確定信號占空比，由CCR1獲取信號周期*/#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 t