原创 Labwindows/cvi8.5学习日志(27)----rs232文件接收程序

//*********************************************************
// Labwindows/cvi8.5 RS232接收文件
// szlihongtao
// 2010-06-19
// 参照 王建新的<Labwindows/cvi测试技术及工程应用> page185
// 稍有改写
//*********************************************************
#include "toolbox.h"
#include <ansi_c.h>
#include <rs232.h>
#include <cvirte.h>  
#include <userint.h>
#include "232.h"
//*********************************************************
static int bytesread;
static char filename[MAX_PATHNAME_LEN];
static char pathname[MAX_PATHNAME_LEN];
static int panelHandle;
int COM_Port;
//*********************************************************
int main (int argc, char *argv[])
{
 if (InitCVIRTE (0, argv, 0) == 0)
  return -1;   /* out of memory */
 if ((panelHandle = LoadPanel (0, "232.uir", PANEL)) < 0)
  return -1;
 
 COM_Port=2;   
 OpenComConfig (COM_Port, "", 57600, 1, 8, 1, 32767, 32767);  //打开并配置串口Com2 
 SetComTime (COM_Port, 5.0);     //设置通信超时时间      
 SetXMode (COM_Port, 0);      //禁止串口软件握手   
 SetCTSMode (COM_Port, LWRS_HWHANDSHAKE_OFF);   //禁止硬件握手 
 
 DisplayPanel (panelHandle);
 RunUserInterface ();
 DiscardPanel (panelHandle);
 return 0;
}
//*********************************************************
int CVICALLBACK receivefilename (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 switch (event)
 {
  case EVENT_COMMIT:
  {
   filename[0] = '\0';
   SetCtrlVal (panelHandle, PANEL_STRING, "");  
  
   bytesread = ComRdTerm (COM_Port, filename, 260, 13);  //读取字符串直到回车符---13 出现  
   filename[bytesread]= '\0';   //当出现回车符后，在其后加上结束符 
   
   SetCtrlVal (panelHandle, PANEL_STRING, filename); 
   break;
  }
 }
 return 0;
}
//*********************************************************
int CVICALLBACK QuitCallback (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 switch (event)
 {
  case EVENT_COMMIT:
  {      
   CloseCom (COM_Port);   //关闭串口Com2    
   QuitUserInterface (0);
   break;
  }
 }
 return 0;
}
//*********************************************************
int CVICALLBACK filesel (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 int selstatus;
 switch (event)
 {
  case EVENT_COMMIT:
  {
   selstatus = DirSelectPopup ("", "保存文件", 1, 1, pathname);
   if (selstatus)
   {
    strcat (pathname, "\\");
    strcat (pathname, filename);
    SetCtrlVal (panelHandle, PANEL_STRING_2, pathname);
   }  
   break;
  }
 }
 return 0;
}
//*********************************************************
int CVICALLBACK receivefile (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 int result;
 int filesize;
 int inputqueuelen;
 FILE *stream;
 
 switch (event)
 {
  case EVENT_COMMIT:
  {
   GetCtrlVal (panelHandle, PANEL_STRING_2, pathname);
   
   //判断文件是否存在
   result = FileExists (pathname, &filesize);
   if (!result)
   {
    stream = fopen (pathname, "wb+");   // 创建新文件
    fclose (stream);
   }
   
   //设置串口Com2调制解调器参数
   XModemConfig (COM_Port, 10.0, 10, 5.0, 1024);
   
   //设置从串口Com2接收文件数据
   XModemReceive (COM_Port, pathname);
   
   //获得串口Com2输入队列的字符串数目
   inputqueuelen = GetInQLen (COM_Port);
   if (inputqueuelen == 0)
    MessagePopup ("文件保存", "文件保存完毕!");
   break;
  } 
 }
 return 0;
}
//*********************************************************
//*********************************************************
//*********************************************************