山東理工大學(xué)msp430考試常用程序縮印版

1、一 /*利用WDT的定時(shí)器模式控制led小燈L1以1s的間隔時(shí)間閃滅*/#include io430.hint main( void ) / Stop watchdog timer to prevent time out reset /WDTCTL = WDTPW + WDTHOLD; P6DIR |= BIT2;P6OUT |= BIT2; /關(guān)電平轉(zhuǎn)換,P6.2連接了開發(fā)板上 /的電平轉(zhuǎn)換芯片的使能端,與實(shí)際功能無關(guān) WDTCTL=WDT_ADLY_1000;/設(shè)置看門狗ACLK定時(shí)器1000ms定時(shí) IE1|=WDTIE;/開看門狗定時(shí)器中斷 P2DIR|=BIT0; P2OUT|=BI

2、T0; _enable_interrupt();/_EINT();/開總中斷 while(1) LPM0;/進(jìn)入低功耗模式一，CPUOFF return 0;#pragma vector = WDT_VECTOR_interrupt void watchdog_timer() P2OUT=P2OUT;二 /*定時(shí)器A增計(jì)數(shù)模式下,ALK=32768HZ,MCLK=SMCLK=DCOCLK=800KHZ利用定時(shí)器溢出中斷TAIE實(shí)現(xiàn)小燈L1每0.5秒閃滅一次,時(shí)鐘選擇ALK，8分頻注意:TTAIE指TAR計(jì)數(shù)器溢出，從65535 到0的變化，由 TAIFG 引起的,TAIFG 一般進(jìn) TIMER

3、A1_VECTOR中斷向量;*/#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;/選擇ACK，增計(jì)數(shù)模式， /8分頻，使能定時(shí)器中斷 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 /*定時(shí)器A增計(jì)數(shù)模式下,ALK=32768HZ,MCLK=SMCLK=DCOCLK=800KHZ實(shí)現(xiàn)小燈L1每0.5秒閃滅一次,時(shí)鐘選擇SMCLK，使用CCIE中斷。注意：CCIE指捕獲到相應(yīng)信號（捕獲模式下） ；定時(shí)時(shí)間到（比較模式下），由CCIFG引起的。CCIFG的話要看用的是哪個(gè)定時(shí)器，如果是CCR0的話就進(jìn)TIMERA0_VECTOR，如果是CR1,CCR2則進(jìn)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();/使能中斷 TACTL=TASSEL_2+TACLR+MC_1+ID_3;/時(shí)鐘選擇SMCLK，計(jì)數(shù)器清零，增計(jì)數(shù)模式,8分頻 CCTL0=CCIE;/CCR0中斷允許 CCR0=50000; while(1) LPM0; return 0;#pragma vector=TIMERA0_VECTOR

6、_interrupt void Timer_A() P2OUT=P2OUT;四 /*使用CCR0定時(shí)中斷。CCR0的值是可以改變的,當(dāng)CCR0增加到0ffffh后自動把它清為0.實(shí)驗(yàn)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(shí)越長，當(dāng)CCR0超過65535時(shí)會自動清理，使得定時(shí)時(shí)間很短。而通過高低電平的實(shí)時(shí)改變也可以用來做相應(yīng)管腳的PWM輸出*/#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;/時(shí)鐘選擇SMCLK，計(jì)數(shù)器清零，增計(jì)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(shí)器連續(xù)計(jì)數(shù)模式舉例：1、在需要65536個(gè)時(shí)鐘周期的定時(shí)器應(yīng)用場合常用連續(xù)計(jì)數(shù)模式。定時(shí)器從當(dāng)前值計(jì)數(shù)到0FFFFH后又從0開始計(jì)數(shù)。

8、當(dāng)定時(shí)器從0FFFFH到0時(shí)設(shè)置標(biāo)志位TAIFG。2、連續(xù)計(jì)數(shù)模式下，也可以通過改變TACCRx的值，產(chǎn)生獨(dú)立的時(shí)間間隔，例如，可以在相應(yīng)的比較寄存器TACCRx上加上一個(gè)時(shí)間差，不斷地增加TACCRx的值，使定時(shí)器每到一定的時(shí)間間隔都能與TACCRx的值相等，從而使中斷標(biāo)志位置位，申請中斷。以下代碼驗(yàn)證了上面兩種情況*/#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，連續(xù)計(jì)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 void Time_a() switch(TAIV) case 2:break; case 4:break; case 10:

10、P2OUT=BIT1;break; 六 /*任務(wù)要求：利用定時(shí)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.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，連續(xù)計(jì)數(shù)模式，定時(shí)器溢出中斷 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 四乘四按鍵#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、/判斷哪列被拉低if(P1IN&0X0F)=0X0E)/判斷哪行被拉低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 數(shù)碼管與定時(shí)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;

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?dāng)?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,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+);十一定時(shí)器中斷#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; 十二串口發(fā)送/*程序功能：MCU不停向PC機(jī)發(fā)送數(shù)據(jù),

25、在屏幕上顯示0127對應(yīng) 的ASCII字符-通信格式：N.8.1, 2400-測試說明：打開串口調(diào)試精靈，正確設(shè)置通信格式，觀察屏幕*/#include 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 their corresponding n ASCII code as

26、 follows:; uchar value = 0; /*下面六行程序關(guān)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(guān)狗 P6DIR |= BIT2;P6OUT |= BIT2; / 關(guān)電平轉(zhuǎn)換 P3SEL |= 0x30; / P3.4,5

27、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(jī) IE1 |= URXIE0; / 使能接收中斷 _EINT(); PutString(tishi); while(1) while (!(IFG1 & UTXIFG

28、0); 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(jī)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？ TXBUF0 = *ptr+; / 發(fā)送數(shù)據(jù) while (!(IFG1 & UTXIFG0); TXBUF0 = n;/*函數(shù)名稱：Delays功 能：

29、延時(shí)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(jī)的字符，然后重新發(fā)送給PC機(jī)-通信格式：N.8.1, 9600 無校驗(yàn)，8個(gè)數(shù)據(jù)位，1個(gè)停止位，波特率9600-測試說明：打開串口調(diào)試助手，正確設(shè)置通信格式，向?qū)W習(xí)板 發(fā)送一個(gè)字符，觀察是否收到回發(fā)的字符，以及是否 正確*/#include /*主函數(shù)*/void main(void) /*下面六行程序關(guān)閉所有的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; / 關(guān)閉看門狗 P6DIR |= BIT2;P6OUT |= BIT2; /關(guān)閉電平轉(zhuǎn)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

31、 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(jī) IE1 |= URXIE0; / 使能USART0的接收中斷 while(1) _EINT(); /打開全局中斷 LPM1; /進(jìn)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

32、中斷服務(wù)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(jī)發(fā)送4X4鍵盤的鍵值-通信格式：N.8.1, 9600-測試說明：打開串口調(diào)試助手，正確設(shè)置通信格式，按動4X4 鍵盤觀察屏幕顯示的按鍵鍵值。*/#include #include keypad.h#include keypad.C/引用外部變量的聲明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);/*主函數(shù)*/void main(void) /*下面六行程序關(guān)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; P6D

34、IR = 0XFF;P6OUT = 0XFF; uchar *tishi = This Keys ID is:; P6DIR |= BIT2;P6OUT |= BIT2; /關(guān)閉電平轉(zhuǎn)換 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(); /初始化鍵盤端口 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(jī)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(*

36、ptr != 0) while (!(IFG1 & UTXIFG0); / TX緩存空閑？ TXBUF0 = *ptr+; / 發(fā)送數(shù)據(jù) while (!(IFG1 & UTXIFG0); TXBUF0 = n;/*函數(shù)名稱：PutChar功 能：向PC機(jī)發(fā)送一個(gè)字符對應(yīng)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(yīng)的ASCII碼 TXBUF0 = 0x30 + zifu/10; while (!(IFG1 & UTXIFG0); TXBU

37、F0 = 0x30 + zifu%10; else TXBUF0 = 0x30 + zifu; while (!(IFG1 & UTXIFG0); TXBUF0 = n; /發(fā)送回車字符十五 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口為基本IO/P2SEL=BIT0;P2SEL=0XFE; P2DI

38、R=0XFF;/P2口為輸出口 P2OUT=0XFF;/初始化小燈為全滅 while(1) P2OUT=0XFE;/點(diǎn)亮 delay(200); P2OUT=0XFF;/熄滅 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(shí)器TA的時(shí)鐘源，定時(shí)器TA工作在連續(xù)計(jì)數(shù)模式。待捕獲方波信號由軟件產(chǎn)生，經(jīng)P3.0輸出

39、，輸出信號同時(shí)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 timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; TACTL=TASSEL_1+MC_2+TACLR;/ACLK,連續(xù)計(jì)數(shù)模式，計(jì)數(shù)器清空 CCTL0=CM_3+CCIS_0+SCS+CAP+CCIE;/選擇捕獲模式，上升沿和下降沿 /都捕獲，異步捕