原创 Labwindows/cvi8.5学习日志(32)----虚拟温度检测记录仪

//*********************************************************
// Labwindows/cvi8.5  虚拟温度检测记录仪
// 改写自 Labwindows 自带的例程 tempsys
// szlihongtao
// 2010-07-06
//*********************************************************  
#include <cvirte.h>    /* Needed if linking in external compiler; harmless otherwise */
#include <userint.h>
#include <analysis.h>
#include <utility.h>
#include <ansi_c.h>
#include "tempsys.h"
//*********************************************************
#define ON 1          
#define OFF 0      
//*********************************************************
int hist_array[10], y_array[10];
double datapoints[3] = {85.0, 80, 75.0};
double temp_history[10], x_array[10];
double upper_limit = 85.0, lower_limit = 75.0;
int handle;
//*********************************************************
int main (int argc, char *argv[])
{
    if (InitCVIRTE (0, argv, 0) == 0)    /* Needed if linking in external compiler; harmless otherwise */
        return -1;    /* out of memory */

    if ((handle = LoadPanel (0, "tempsys.uir", PANEL)) < 0)
        return -1;
    DisplayPanel (handle);
    RunUserInterface();

    return 0;
}
//*********************************************************
int CVICALLBACK ProcessLoop (int panel, int control, int event, void *callbackData, int eventData1,  int eventData2)
{
    double temp, mean, std_dev, voltage;
    int i;
    static int count;

    if (event == EVENT_TIMER_TICK)
 { 
        temp = rand()*5.0/(double)RAND_MAX + 75.0;    /* simulate temperature reading */     

        datapoints[1] = temp;
        temp_history[count++] = temp;

        /* Update thermometer control and temperature strip chart */
        SetCtrlVal (handle, PANEL_TEMP, temp);
        PlotStripChart (handle, PANEL_TEMP_CHART, datapoints, 3, 0, 0,VAL_DOUBLE);
//---------------------------------------------------------
        /* Check against alarm limits */
        if (temp >= upper_limit)
            SetCtrlVal (handle, PANEL_ALARM_HIGH, ON);
        else
            SetCtrlVal (handle, PANEL_ALARM_HIGH, OFF);
  
        if (temp <= lower_limit)
            SetCtrlVal (handle, PANEL_ALARM_LOW, ON);
        else
            SetCtrlVal (handle, PANEL_ALARM_LOW, OFF);
//---------------------------------------------------------
        /* Every 10 readings, perform analysis */
        if (count == 10)
  {
            count = 0;
            StdDev (temp_history, 10, &mean, &std_dev);
            SetCtrlVal (handle, PANEL_MEAN, mean);
            SetCtrlVal (handle, PANEL_STD_DEV, std_dev);
   
            Histogram (temp_history, 10, 70.0, 90.0, hist_array, x_array, 10);
   
            for (i=0;i<10;i++)
                y_array = y_array + hist_array;
            PlotXY (handle, PANEL_TEMP_HIST, x_array, y_array, 10, VAL_DOUBLE,
                    VAL_INTEGER, VAL_VERTICAL_BAR, VAL_EMPTY_SQUARE, VAL_SOLID, 1,VAL_YELLOW);
        }
     }