LabVIEW CVI RS232代碼

介绍

• 使用 labcvi 编写，这类工具很多，练手用
• 使用 labivewcvi 自带控件
• 串口调试工具
• 没有更多功能
• 相关
  1. CVI 的语法与 C 一样
  2. CVI 封装了各种驱动，适合熟悉 C 语言的人进行快速开发
  3. CVI 具有 LabVIEW 控件

代码

//==============================================================================
//
// Title:       COM
// Purpose:     A short description of the application.
//
// Created on:  2012-3-27 at 18:17:57 by Lenovo User.
// Copyright:   Lenovo (Beijing) Limited. All Rights Reserved.
//
//==============================================================================

//==============================================================================
// Include files

#include <formatio.h>
#include <ansi_c.h>
#include <cvirte.h>
#include <userint.h>
#include <rs232.h>
#include <userint.h>
#include "COM.h"
#include "toolbox.h"

//==============================================================================
// Constants

//==============================================================================
// Types

//==============================================================================
// Static global variables

static int panelHandle;
int comport,
    baudrate,
    portindex,
    parity,
    databits,
    stopbits,
    RS232Error,
 stringsize,
 comport_open,
 openbool;
 bytes_sent,
 checkval,
 senddatanum,
 recedatanum;
char devicename[30],
     send_data[2000];

//==============================================================================
// Static functions

//==============================================================================
// Global variables

//==============================================================================
// Global functions
void ReceiveData(void);
void senddata (void) ;
void DisplayRS232Error (void) ;
void loadctrlval(void) ;
void openrs232(void) ;
/// HIFN The main entry-point function.

int main (int argc, char *argv[])
{
    int error = 0;

    /* initialize and load resources */
    nullChk (InitCVIRTE (0, argv, 0));
    errChk (panelHandle = LoadPanel (0, "COM.uir", PANEL));

 loadctrlval();
 //GetCtrlVal (PANEL, PANEL_open, &comport_open);  (ON:1;OFF:0)

    /* display the panel and run the user interface */
    errChk (DisplayPanel (panelHandle));
    errChk (RunUserInterface ());

Error:
    /* clean up */
    DiscardPanel (panelHandle);
    return 0;
}

//==============================================================================
// UI callback function prototypes

/// HIFN Exit when the user dismisses the panel.
int CVICALLBACK panelCB (int panel, int event, void *callbackData,
        int eventData1, int eventData2)
{
    if (event == EVENT_CLOSE)
        QuitUserInterface (0);
    return 0;
}

int  CVICALLBACK CALL_OPEN(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
 GetCtrlVal (PANEL, PANEL_open, &openbool);
 if(event == EVENT_LEFT_CLICK)
 {
  if(!openbool)
  {
   openrs232();
   if(!RS232Error)
   {
    SetCtrlAttribute (PANEL, PANEL_status, ATTR_OFF_COLOR, VAL_DK_GREEN);
    SetXMode (comport, 0);
                SetCTSMode (comport, 0);
                SetComTime (comport, 5);
    FlushInQ (comport);
    FlushOutQ (comport);
    comport_open=1;
   }
   else
   {
    SetCtrlAttribute (PANEL, PANEL_status, ATTR_OFF_COLOR, VAL_DK_RED);
    comport_open=0;
    DisplayRS232Error();
   }
  }
  else
  {
   CloseCom(comport);
   comport_open=0;
   SetCtrlAttribute (PANEL, PANEL_status, ATTR_OFF_COLOR, VAL_BLACK);
   SetCtrlVal (PANEL,PANEL_CHECKBOX,0);
   SetCtrlAttribute (PANEL, PANEL_TIMER_send, ATTR_ENABLED, 0);
   SetCtrlAttribute (PANEL, PANEL_TIMER, ATTR_ENABLED, 0);
   checkval=0;
  }
 }
 return 0;
}

int  CVICALLBACK CALL_SEND(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
    if (event == EVENT_COMMIT) senddata();
    return 0;
}

int  CVICALLBACK CHECK(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
 int timeval;
 double time;
 if (event == EVENT_COMMIT)
 {
  if(comport_open)
  {
   GetCtrlVal (PANEL,PANEL_CHECKBOX,&checkval);
   GetCtrlVal (PANEL,PANEL_time,&timeval);
   time=timeval/1000;
   SetCtrlAttribute (PANEL,PANEL_TIMER_send, ATTR_INTERVAL,time);
   SetCtrlAttribute (PANEL, PANEL_TIMER_send, ATTR_ENABLED, 1);
  }
  else
  {
   MessagePopup ("錯誤", "自動發送錯誤, 請確保串口已經打開!");
   SetCtrlVal (PANEL,PANEL_CHECKBOX,0);
  }
 }
    return 0;
}

int  CVICALLBACK TIMERSEND(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
    switch (event)
        {
        case EVENT_TIMER_TICK:
   if(comport_open && checkval==1) senddata();
   break;
        }
    return 0;
}

int  CVICALLBACK TimerCallback(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
    switch (event)
        {
        case EVENT_TIMER_TICK:
   if(comport_open) ReceiveData ();
   break;
        }
    return 0;
}

int  CVICALLBACK CLEARSEND(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
 if (event == EVENT_COMMIT)
 {
  //SetCtrlAttribute (PANEL, PANEL_SEND, ATTR_CTRL_VAL,'\0');
  DefaultCtrl (PANEL, PANEL_SEND);
 }
 return 0;
}

int  CVICALLBACK CLEARRECE(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
 if (event == EVENT_COMMIT)
 {
  //SetCtrlAttribute (PANEL, PANEL_RECEIVE, ATTR_CTRL_VAL,'\0');
  DefaultCtrl (PANEL,PANEL_RECEIVE);
 }
 return 0;
}

int  CVICALLBACK CLEARNUM(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
 if (event == EVENT_COMMIT)
 {
  SetCtrlVal (PANEL, PANEL_sendnum, 0);
  SetCtrlVal (PANEL, PANEL_recenum, 0);
  senddatanum=0;
  recedatanum=0;
 }
 return 0;
}

int  CVICALLBACK LOADSend(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
 char tempfilename[MAX_PATHNAME_LEN],
      filebuff[200000] = {0};
 int fileselect,filehandle;
 if (event == EVENT_COMMIT)
 {
  fileselect= FileSelectPopup ("", "*.txt", "","選擇發送區加載文件", VAL_LOAD_BUTTON,0, 0, 1, 1, tempfilename);
  if (fileselect==VAL_EXISTING_FILE_SELECTED) /*  0 VAL_NO_FILE_SELECTED  1 VAL_EXISTING_FILE_SELECTED   2 VAL_NEW_FILE_SELECTED   */
   {
    filehandle=OpenFile (tempfilename, VAL_READ_ONLY, VAL_OPEN_AS_IS, VAL_ASCII);
    ReadFile (filehandle,filebuff ,MAX_PATHNAME_LEN);
    DefaultCtrl (PANEL,PANEL_SEND);
    SetCtrlVal (PANEL, PANEL_SEND, filebuff);
   }
 }
 return 0;
}

int  CVICALLBACK SAVERece(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
 char tempfilename[MAX_PATHNAME_LEN],
      filebuff[200000] = {0};
 int fileselect,filehandle;
 if (event == EVENT_COMMIT)
 {
  fileselect= FileSelectPopup ("", "*.txt", "","保存接收區文件", VAL_SAVE_BUTTON,0, 0, 1, 1, tempfilename);
  if(fileselect!=VAL_NO_FILE_SELECTED)
  {
   filehandle=OpenFile (tempfilename, VAL_WRITE_ONLY, VAL_OPEN_AS_IS, VAL_ASCII);
   GetCtrlVal (PANEL,PANEL_RECEIVE,filebuff);
   WriteFile (filehandle,filebuff ,MAX_PATHNAME_LEN);
  }
 }
 return 0;
}

void openrs232(void)
{
 GetCtrlVal (PANEL, PANEL_COMPORT, &comport);
 GetCtrlVal (PANEL, PANEL_BAUDRATE, &baudrate);
 GetCtrlVal (PANEL, PANEL_PARITY, &parity);
 GetCtrlVal (PANEL, PANEL_DATABITS, &databits);
 GetCtrlVal (PANEL, PANEL_STOPBITS, &stopbits);
 portindex=comport-1;
 GetLabelFromIndex (PANEL, PANEL_COMPORT, portindex,devicename);
 DisableBreakOnLibraryErrors ();
 RS232Error = OpenComConfig(comport,devicename,baudrate,parity,databits,stopbits,512,512);
 SetCtrlAttribute (PANEL, PANEL_TIMER, ATTR_ENABLED, 1);
 //EnableBreakOnLibraryErrors ();
}

void senddata (void)
{
 SetCtrlVal (PANEL, PANEL_RECEIVE, '\0');
 GetCtrlVal (PANEL, PANEL_SEND,send_data);
 stringsize = StringLength (send_data);
 senddatanum+=stringsize;
 SetCtrlVal (PANEL, PANEL_sendnum, senddatanum);
 bytes_sent = ComWrt (comport, send_data, stringsize);
 RS232Error = ReturnRS232Err ();
 if (RS232Error)
  DisplayRS232Error ();
}

void ReceiveData (void)
{
    char    readBuf[2000] = {0};
    int     strLen;
 strLen = GetInQLen (comport);
 recedatanum+=strLen;
 SetCtrlVal (PANEL, PANEL_recenum, recedatanum);
 ComRd (comport, readBuf, strLen);
 SetCtrlVal (PANEL, PANEL_RECEIVE, readBuf);
 SetActiveCtrl (PANEL, PANEL_SEND);
}

void loadctrlval(void)
{
 SetCtrlVal (PANEL, PANEL_RECEIVE, "接收區");
 SetCtrlVal (PANEL, PANEL_SEND, "發送區");
}

void DisplayRS232Error (void)
{
    char ErrorMessage[200];
    switch (RS232Error)
        {
        default :
            if (RS232Error < 0)
                {
                Fmt (ErrorMessage, "%s<未知串口錯誤 %i", RS232Error);
                MessagePopup ("串口錯誤信息", ErrorMessage);
                }
            break;
        case 0  :
            MessagePopup ("串口錯誤信息", "No errors.");
            break;
        case -2 :
            Fmt (ErrorMessage, "%s", "沒打開串口");
            MessagePopup ("串口錯誤信息", ErrorMessage);
            break;
        case -3 :
            Fmt (ErrorMessage, "%s", "串口未打開.\n"
                 "請打開串口.");
            MessagePopup ("串口錯誤信息", ErrorMessage);
            break;
  case -7 :
            Fmt (ErrorMessage, "%s", "串口被占用.\n""請檢查串口!");
            MessagePopup ("串口錯誤信息", ErrorMessage);
            break;
        case -99 :
            Fmt (ErrorMessage, "%s", "超時錯誤.\n\n"
                 "Either increase timeout value,\n"
                 "       check COM Port setting, or\n"
                 "       check device.");
            MessagePopup ("串口錯誤信息", ErrorMessage);
            break;
        }
}