虚拟仪器设计与应用CVI复习资料.doc

要求：1、 设置电源开关键，电源打开，LED灯亮，系统开始工作；否则，系统不工作。若电源未开，直接点击“OK”键，系统弹出错误报警对话框。2、 当电源打开后，定时器开始工作，定时间隔为1s。每隔一秒，电表的示数增加一度。电表示数的范围是0-20。当示数增加到20度后，定时器关闭，电表停止不动，直至再次按下“OK”键重新计数。3、 “QUIT”按钮用于在任意时刻退出整个面板的工作。#include #include #include sfeef.hstatic int panelHandle,t; double timer;int main (int argc, char *argv)if (InitCVIRTE (0, argv, 0) = 0)return -1;/* out of memory */if (panelHandle = LoadPanel (0, sfeef.uir, PANEL) 0)return -1;DisplayPanel (panelHandle);RunUserInterface ();DiscardPanel (panelHandle);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;int CVICALLBACK Kaishi (int panel, int control, int event,void *callbackData, int eventData1, int eventData2) switch (event)case EVENT_COMMIT:if (t = 0)MessagePopup (错误,电源没开) ;else SetCtrlAttribute (panelHandle, PANEL_TIMER, ATTR_ENABLED, 0);break;return 0;int CVICALLBACK Time (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_TIMER_TICK: timer+; SetCtrlVal (panelHandle, PANEL_NUMERICGAUGE, timer);if (timer=20)timer=0;SetCtrlAttribute (panelHandle, PANEL_TIMER, ATTR_ENABLED,0);break;return 0;int CVICALLBACK Dianyuan (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT: GetCtrlVal (panelHandle, PANEL_BINARYSWITCH, &t);SetCtrlVal (panelHandle, PANEL_LED, t);break;return 0;设计一窗口闪烁程序，使其每0.5秒闪烁一次。表3-1 主要控件基本属性列表控件类型Constant Name 属性设置面板PanelPANEL命令按钮Command ButtonQUITBUTTONCallback FunctionQuitCallbackLable_Quit双态按钮Toggle ButtonTOGGLEBUTTONCallback FunctionFlashCBInitial StateoffLable控制按钮定时器控件TimerTIMERCallback FunctionFlashTimerCBInterval (seconds)0.5LableTimer#include #include #include wyf.h#includestatic int panelHandle;int hwnd;int main (int argc, char *argv)if (InitCVIRTE (0, argv, 0) = 0)return -1;/* out of memory */if (panelHandle = LoadPanel (0, wyf.uir, PANEL) 0)return -1;DisplayPanel (panelHandle);hwnd = GetCVIWindowHandle ();RunUserInterface ();DiscardPanel (panelHandle);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;int CVICALLBACK FlashCB (int panel, int control, int event,void *callbackData, int eventData1, int eventData2) int p;switch (event)case EVENT_COMMIT: GetCtrlVal (panelHandle, PANEL_TOGGLEBUTTON, &p);SetCtrlAttribute (panelHandle, PANEL_TIMER, ATTR_ENABLED, p);break;return 0;int CVICALLBACK FlashTimerCB (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_TIMER_TICK: FlashWindow(HWND)hwnd,1);break;return 0;表2-1 添加控件的基本属性列表控件类型Constant Name 属性设置命令按钮Command ButtonSAVECallback FunctionSaveCBLable_SaveLOADCallback FunctionLoadCBLable_Load设计波形发生器，将产生的波形数据存储到文件中，并能够从文件中回读显示（要求用ANSI C库stdio.h中的文件打开和读写函数）。#include #include #include #include wyf.hstatic int panelHandle;double datapoints100;int main (int argc, char *argv)if (InitCVIRTE (0, argv, 0) = 0)return -1;/* out of memory */if (panelHandle = LoadPanel (0, wyf.uir, PANEL) 0)return -1;DisplayPanel (panelHandle);RunUserInterface ();DiscardPanel (panelHandle);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;int CVICALLBACK SaveCB (int panel, int control, int event,void *callbackData, int eventData1, int eventData2) size_t num;FILE *fp;switch (event)case EVENT_COMMIT:fp = fopen (test.dat, wb);/*为输出打开一个二进制文件*/num = fwrite (datapoints, sizeof(double), 100, fp);/*写文件*/fclose (fp);/*关闭文件*/break;return 0;int CVICALLBACK LoadCB (int panel, int control, int event,void *callbackData, int eventData1, int eventData2) int i;double data100;char fileNameMAX_PATHNAME_LEN;switch (event)case EVENT_COMMIT:i = FileSelectPopup (, .dat, , , VAL_LOAD_BUTTON, 0, 0, 1, 0, fileName);if(i=1) size_t num;FILE *fp;fp = fopen (fileName, rb);num = fread (data, sizeof(double), 100, fp);fclose (fp); DeleteGraphPlot (panelHandle, PANEL_GRAPH, -1, VAL_IMMEDIATE_DRAW); PlotY (panelHandle, PANEL_GRAPH, data, 100, VAL_DOUBLE, VAL_FAT_LINE, VAL_EMPTY_SQUARE, VAL_SOLID, 1, VAL_RED);break;return 0;int CVICALLBACK xiao (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)int i;int trace_color,shape;if(event = EVENT_COMMIT)GetCtrlVal (panelHandle, PANEL_RINGSLIDE, &shape);switch(shape)case 0:for(i=0;i100;i+)datapointsi=50*sin(2*3.1415926536)/100)*i)+50;break;case 1:for(i=0;i33;i+)datapointsi=33.0;for(i=33;i67;i+)datapointsi=67.0;for(i=67;i100;i+)datapointsi=33.0;break;case 2:for(i=0;i25;i+)datapointsi=i*4;datapointsi+25=100-(i*4);datapointsi+50=i*4;datapointsi+75=100-(i*4);break;case 3:for(i=0;i100;i+)datapointsi=rand()/32767.0*100.0;break;GetCtrlVal (panelHandle, PANEL_COLORNUM, &trace_color);DeleteGraphPlot (panelHandle, PANEL_GRAPH, -1, VAL_IMMEDIATE_DRAW);PlotY (panelHandle, PANEL_GRAPH, datapoints, 100, VAL_DOUBLE, VAL_THIN_LINE, VAL_EMPTY_SQUARE, VAL_SOLID, 1, trace_color);return 0;编写一个函数发生器，要求 :能够通过用户界面选择产生正弦波、三角波、锯齿波、方波等函数波形用曲线图控件绘制用户选择的波形表4-1 主要控件的基本属性列表控件类型Constant Name 属性设置面板PanelPANEL命令按钮Command ButtonQUITBUTTONCallback FunctionQuitCallbackLable_Quit曲线图控件GraphGRAPH1Lable波形显示下拉列表控件RingWAVEFORMCallback FunctionWaveFormChooseLabel波形选择Label/ValuePairsLabel无Value0Label正弦波Value1Label三角波Value2Label锯齿波Value3Label方波Value4#include #include #include #include wyf.hstatic int panelHandle,type=100,index=50,delay=30,width=10;static int n=2000,tablesize=100,t;double p=0.0,waveTable100,x2000;double amphase=1.0,f=0.001,amp=5.0,first=1.0,last=100.0;int main (int argc, char *argv)if (InitCVIRTE (0, argv, 0) = 0)return -1;/* out of memory */if (panelHandle = LoadPanel (0, wyf.uir, PANEL) 0)return -1;DisplayPanel (panelHandle);RunUserInterface ();DiscardPanel (panelHandle);return 0;int CVICALLBACK boxingxuanze (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)switch (event)case EVENT_COMMIT:GetCtrlVal (panelHandle, PANEL_BOXINGXUANZE, &t);switch (t)case 0:DeleteGraphPlot (panelHandle,PANEL_BOXINGXIANSHI,-1,VAL_IMMEDIATE_DRAW); break; case 1: SinePattern (type,amp,0.0,2,waveTable);break; case 2: Triangle (type,amp,waveTable);break;case 3: SawtoothWave (t