MSP430F149流水灯闪烁以及数码管的显示

今天下午写了一个流水灯闪烁的实验,总的来说,不难,因为这块板子集合的电路图没有上一块那么复杂,所以总的来说,还是比较顺手,开始的时候,出现流水灯没有流转的现象,原来是没有加入延时函数,后来经过调整,结果很快就出来了

电路示意图:

 

示例代码:

#include<msp430x14x.h>

#define CPU_F               ((double)8000000) 
#define delay_us(x)        __delay_cycles((long)(CPU_F*(double)x/1000000.0)) 
#define delay_ms(x)        __delay_cycles((long)(CPU_F*(double)x/1000.0)) 
unsigned char table1[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};

void main( void )
{
  // Stop watchdog timer to prevent time out reset
  WDTCTL = WDTPW + WDTHOLD;
  unsigned char i=0;
  
  P2SEL = 0x0;//设置P2普通的I/O
  P2DIR = 0xff;//设置普通的输出
 
  
  while(1)
  {
      P2OUT = table1[i];
      delay_ms(50);
      i++;
      if(i == 8)
          i=0;
  }

  
}

 

实验板点亮数码管

实验板的电路图

 

示例代码:

#include<msp430x14x.h>

#define dula_l P6OUT &=~BIT6
#define dula_h P6OUT |=BIT6
#define wela_l P5OUT &=~BIT5
#define wela_h P5OUT |=BIT5


#define CPU_F               ((double)8000000) 
#define delay_us(x)        __delay_cycles((long)(CPU_F*(double)x/1000000.0)) 
#define delay_ms(x)        __delay_cycles((long)(CPU_F*(double)x/1000.0)) 

unsigned char scandata[16] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
                              0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
//记录显示位数的全局变量

void  main( void )
{
  // Stop watchdog timer to prevent time out reset
  WDTCTL = WDTPW + WDTHOLD;
  
  P6SEL = 0x0;//设置P6,P5,P4为普通的I/O
  P5SEL = 0x0;
  P4SEL = 0x0;
  
  P6DIR |=BIT6;//选择P6.6,P5.5为输出
  P5DIR |=BIT5;
  P4DIR = 0xff;
  
  wela_h;//拉高位选
  P4OUT = 0xff;
  wela_l;
  
  P4OUT = 0x0;//消影
  dula_h;
  P4OUT = scandata[4];//选择段选
  delay_ms(10);//延时
  dula_l;
  
  while(1);


}


虽然程序按照51的方式写出来了,但是问题出现了,把该程序下载到板子上,结果发现不是第一个数码管亮,改变段选,结果数码管又亮了,这是led灯后三位也亮了,不知道怎么回事,这个程序还有待完善~~

 

版权所有,转载请注明链接地址:http://www.cnblogs.com/fengdashen/p/3403954.html

 

posted @ 2013-11-02 17:05  跨七海的风  阅读(2647)  评论(0编辑  收藏  举报