原创 Labwindows/cvi8.5 同步/异步定时器的使用

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// Labwindows/cvi8.5 同步/异步定时器的使用
// LED闪烁指示
// szlihongtao
// 2010-06-09
//*********************************************************
#include <cvirte.h>
#include <userint.h>
#include "1.h"
#include "asynctmr.h" 
//*****************************************************************************
static int panelHandle;
static unsigned int Timer_ID; 

static unsigned int f_led,f_led_red;
static unsigned int cnt_tmr,cnt_tmr1;
//*****************************************************************************
// 异步定时器函数
// 周期为10ms
//*****************************************************************************
int CVICALLBACK FunctionName (int reserved, int timerId, int event,
 void *callbackData, int eventData1, int eventData2)    
{
 static unsigned int t;

 if (++t<10)
  return 0; 
 t=0;     // 周期为100ms

 SetCtrlVal (panelHandle, PANEL_NUMERIC_2,++cnt_tmr1); 
 
 ++f_led_red;
 f_led_red&=1;
 SetCtrlVal (panelHandle, PANEL_LED_RED,f_led_red);
 
 return 0;    
}  
//*****************************************************************************
int main (int argc, char *argv[])
{
 if (InitCVIRTE (0, argv, 0) == 0)
  return -1; /* out of memory */
 if ((panelHandle = LoadPanel (0, "1.uir", PANEL)) < 0)
  return -1;

 Timer_ID=NewAsyncTimer (0.01, -1, 1, FunctionName, 0); // 创建异步定时器
 DisplayPanel (panelHandle);
 RunUserInterface ();
 DiscardPanel (panelHandle);
 DiscardAsyncTimer (-1);  // 删除异步定时器
 
 return 0;
}
//*****************************************************************************
int CVICALLBACK callback_tmr (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 switch (event)
 {
  case EVENT_TIMER_TICK:
  {
      ++f_led;
      f_led&=0x01; 
    SetCtrlVal (panelHandle, PANEL_LED_2,f_led); 
    
   SetCtrlVal (panelHandle, PANEL_NUMERIC_3,++cnt_tmr);
   break;    
  }
 }
 return 0;
}
//*****************************************************************************
int CVICALLBACK QuitCallback (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 switch (event)
 {
  case EVENT_COMMIT:
   QuitUserInterface (0);
   break;
 }
 return 0;
}
//******************************************************************************
//******************************************************************************
//******************************************************************************