text2.c

单片机测量相位和频率的程序,使用了RTX51 TINY操作系统

/******************************************************************************/
/*                                                                            */
/*   Task 2: it is a key task                                                 */
/*                                                                            */
/******************************************************************************/

#include <rtx51tny.h>                 /* RTX-51 tiny functions & defines      */
#include "reg52.h"

sbit Key1    = P2^6;
sbit Key2    = P2^7;
sbit KeyOn   = P3^3;
sbit KeyText = P3^4;
sbit Single1 = P1^4;
sbit Single2 = P1^3;
sbit LedRed  = P1^6;
sbit LedGrn  = P1^5;
/******************************************************************************/
/*   Task 2 'job1':  RTX-51 tiny starts this task with os_create_task (2)     */
/******************************************************************************/
void job2 (void) _task_ 2  {
  while (1)  {                        /* endless loop                         */
   KeyOn = 1;
   Key1  = 0;
    if(KeyText==0)
    {
      os_wait (K_TMO, 4, 0);            /* wait for timeout: 4 ticks            */ 
      if(KeyText==0){
	      Single1 = 0;
		  LedRed = 0;
          os_wait (K_TMO, 2, 0);
          Single1 = 1;}
	  do{
          KeyText = 1;
          Key1    = 0;}
      while(KeyText==0);
      LedRed =~LedRed;
      Key1  = 1;
	  }
    Key1  = 1;
    KeyOn = 1;
    Key2  = 0;
    if(KeyText==0)
    {
      os_wait (K_TMO, 4, 0);            /* wait for timeout: 4 ticks            */ 
      if(KeyText==0){
	      Single2 = 0;
		  LedGrn = 0;
          os_wait (K_TMO, 2, 0);
          Single2 = 1;}
	  do{
          KeyText = 1;
          Key2    = 0;}
      while(KeyText==0);
     LedGrn =~LedGrn;
      Key2  = 1;
	  }
    Key2  = 1;
    os_wait (K_TMO, 2, 0);            /* wait for timeout: 2 ticks            */
  }
}