1.流水灯
#include "msp430f149.h" #include "config.h" void delay(int i) { while(i--); } void main( void ) { WDTCTL = WDTPW + WDTHOLD;//关闭看门狗 BoardConfig(); unsigned int io=0x01,i=0;//用来控制灯亮灭,现在最低位为1,其余为为0 //初始化 P2DIR|=0xff;//设置P2所有端口为输出方向 P2OUT=0xff; while(1) { io=0x01; for(i=0;i<8;i++) { P2OUT=~io; delay(10000); io<<=1; } } }
2.按键控制LED灯
#include "msp430f149.h" #include "config.h" void delay(int i) { while(i--); } void main( void ) { // Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; BoardConfig(); _EINT(); P1IE|=0X01; P1IES!=0X01; P1IFG&=~0X01; //清除中断标志位 //P1REN|=0X01; //使能上下拉电阻 P1OUT|=0X01; //设置为上拉电阻 P2DIR|=0X01; //设置P2.0口为输出 P2OUT|=0X01; while(1) {; } } #pragma vector=PORT1_VECTOR __interrupt void PORT2_ISR(void)//端口2中断 { delay(100); if(P1IFG&0X01) { while(P1IN&0X01==0);//等待 delay(500); P2OUT^=0X01;//反转灯的亮灭状态 } //清除中断标志位 P1IFG&=~0X01; }
3.数码管静态显示
#include "msp430f149.h" #include "config.h" void delay(int i) { while(i--); } void main( void ) { // Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; unsigned int i=0; BoardConfig(); unsigned int data[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; P5DIR|=BIT5; P6DIR|=BIT6;//P5.5 P5.6设置为输出方向 P6OUT&=~BIT6;//P5.6初始为低电平 P5OUT|=BIT5;//P5.5初始为高电平 P4DIR|=0XFF;//P4所有端口设置为输出方向 P4OUT=0X00; P4OUT|=0XEF;//选择Y4; P5OUT&=~BIT5;//关闭位选 P6OUT|=BIT6;//打开段选 P4OUT=0X3F;//首先为0 while(1) { for(i=0;i<=15;i++) { P4OUT=data[i]; delay(10000); delay(10000); delay(10000); if(i>15) { i=0; } } } }