receive.c

CVI教程,用于信号采集系统的多任务开发软件.学习简单,功能实用.

#include <ansi_c.h>
#include <utility.h>
#include <rs232.h>
#include <formatio.h>
#include <cvirte.h>		/* Needed if linking in external compiler; harmless otherwise */
#include <userint.h>
#include "receive.h"

static int panelHandle;
char com[10]={"COM2"},filename[260]={"2.txt"};
double elapse=30.0;

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 ((panelHandle = LoadPanel (0, "receive.uir", PANEL)) < 0)
		return -1;
	DisplayPanel (panelHandle);
	RunUserInterface ();
	return 0;
}

int CVICALLBACK Selectfile (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{   
	int status;
	FILE *fp;
	switch (event)
	{
		case EVENT_COMMIT:
			status=FileSelectPopup ( "c:\\", "*.txt", "*.*", "", VAL_OK_BUTTON, 0, 0, 1, 1,
							 filename);
			if(status==VAL_NEW_FILE_SELECTED)
			{
				fp=fopen(filename,"w");
				fclose(fp);
			}
			SetCtrlVal (panelHandle, PANEL_TEXTMSG, filename);     
			break;
	}
	return 0;
}

int CVICALLBACK Receive (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	char *buf;
	FILE  *fp; 
	long size=0;
	switch (event)
		{
		case EVENT_COMMIT:
			buf=malloc(100000);        
 			DisableBreakOnLibraryErrors ();
	 		OpenComConfig (1,com, 9600, 0, 8, 1,100000, 100000);
  			EnableBreakOnLibraryErrors ();
			FlushInQ (1);
  			
  			SetXMode (1, 0);
  			SetCTSMode (1, LWRS_HWHANDSHAKE_OFF);
			SetComTime (1, elapse);
			///////////////////
			 //read file length
			ComRdTerm (1, buf, 10, 0xff);
			size=atol(buf);
			/////////
			///read file content
			ComRdTerm (1, buf, size, 0xff);   
			
			fp=fopen(filename,"w"); 
			fprintf(fp,"%s",buf);
			CloseCom(1);
			fclose(fp);
			free(buf);
			QuitUserInterface (0);
			break;
		}
	return 0;
}

int CVICALLBACK SetTime (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle, PANEL_NUMERIC, &elapse);
			break;
	}
	return 0;
}

int CVICALLBACK SelectPort (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle, PANEL_SELECTPORT, com);
			break;
	}
	return 0;
}