disp_task.c

ATMEL公司AT89C51SND1为主控制器MP3源代码

}
#endif


/*F**************************************************************************
* NAME: disp_name_stop 
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*----------------------------------------------------------------------------
* PURPOSE:
*   Suspend name display
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void disp_name_stop (void)
{
  disp_state = DISP_IDLE;
}


/*F**************************************************************************
* NAME: disp_clock_reset
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*----------------------------------------------------------------------------
* PURPOSE:
*   Reset chrono to 0:00
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void disp_clock_reset (void)
{
#if CONF_DISPLAY == LED
  LED_VOL   = 0;
  LED_BASS  = 0;
  LED_MED   = 0; 
  LED_TREEB = 0;
#endif
  disp_clock_on = FALSE;
  disp_sec_cpt = 0;
  disp_min_cpt = 0;
  print_time(0, 0);                         /* display 0:00 */
#if CONF_DISPLAY == LCD
  disp_state = DISP_INIT;                   /* reset task */
#endif
}



/*F**************************************************************************
* NAME: disp_clock_start 
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*----------------------------------------------------------------------------
* PURPOSE:
*   Start or re-start clock display
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void disp_clock_start (void)
{
  disp_clock_on = TRUE;
}


/*F**************************************************************************
* NAME: disp_clock_stop 
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*----------------------------------------------------------------------------
* PURPOSE:
*   Suspend clock display
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void disp_clock_stop (void)
{
  disp_clock_on = FALSE;
}


/*F**************************************************************************
* NAME: disp_get_min 
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*   minutes
*----------------------------------------------------------------------------
* PURPOSE: 
*   Return minutes of current time
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
Byte disp_get_min (void)
{
  return disp_min_cpt;
}


/*F**************************************************************************
* NAME: disp_get_sec 
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*   seconds
*----------------------------------------------------------------------------
* PURPOSE: 
*   Return seconds of current time
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
Byte disp_get_sec (void)
{
  return disp_sec_cpt;
}



/*F**************************************************************************
* NAME: disp_save_time 
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*   seconds
*----------------------------------------------------------------------------
* PURPOSE: 
*   Save time info in local variables
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void disp_save_time (void)
{
#if CONF_DISPLAY == LCD
  gl_cpt_tick_save = gl_cpt_tick;
  disp_sec_cpt_save = disp_sec_cpt;
  disp_min_cpt_save = disp_min_cpt;
#endif
}


/*F**************************************************************************
* NAME: disp_recall_time 
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*   seconds
*----------------------------------------------------------------------------
* PURPOSE: 
*   Reset time with local variables value
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void disp_recall_time(void)
{
#if CONF_DISPLAY == LCD
  gl_cpt_tick = gl_cpt_tick_save;
  disp_sec_cpt = disp_sec_cpt_save;
  disp_min_cpt = disp_min_cpt_save;
  /* Refresh second and minute display */
  print_sec(disp_sec_cpt);
  print_min(disp_min_cpt);
#endif
}


/*F**************************************************************************
* NAME: disp_inc_time 
*----------------------------------------------------------------------------
* PARAMS:
*  Byte second
* return:
*   
*----------------------------------------------------------------------------
* PURPOSE: 
*   increase time with second value
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void disp_inc_time(Byte second)
{
#if CONF_DISPLAY == LCD
  disp_sec_cpt += second;
  if (disp_sec_cpt >= DISP_SEC_MIN)     /* 1 min expiration */
  {
    disp_sec_cpt = disp_sec_cpt - DISP_SEC_MIN;
    disp_min_cpt++;
    print_min(disp_min_cpt);
  }
  print_sec(disp_sec_cpt);
#else
  disp_sec_cpt += second;
  if (disp_sec_cpt >= DISP_SEC_MIN)     /* 1 min expiration */
  {
    disp_sec_cpt = disp_sec_cpt - DISP_SEC_MIN;
    disp_min_cpt++;
}
#endif
}


/*F**************************************************************************
* NAME: disp_dec_time 
*----------------------------------------------------------------------------
* PARAMS:
*  Byte second
* return:
*   
*----------------------------------------------------------------------------
* PURPOSE: 
*   decrease time with second value
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void disp_dec_time(Byte second)
{
#if CONF_DISPLAY == LCD
  if (disp_sec_cpt <= second)
  {
    if (disp_min_cpt == 0)
    {
      disp_sec_cpt = 0;
      print_sec(disp_sec_cpt);
    }
    else
    {
      disp_sec_cpt = DISP_SEC_MIN + disp_sec_cpt - second;
      disp_min_cpt--;
      print_min(disp_min_cpt);
      print_sec(disp_sec_cpt);
    }
  }
  else
  {
    disp_sec_cpt-=second;
    print_sec(disp_sec_cpt);
  }
#else
  if (disp_sec_cpt <= second)
  {
    if (disp_min_cpt == 0)
    {
      disp_sec_cpt = 0;
    }
    else
    {
      disp_sec_cpt = DISP_SEC_MIN + disp_sec_cpt - second;
      disp_min_cpt--;
    }
  }
  else
  {
    disp_sec_cpt-=second;
  }

#endif
}