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CVI 串口调试助手

news 2025/8/20 23:45:07

基于Labwindows CVI 2017编写的一个简单的串口调试助手，附带接收一个00–99的两位数并进行波形绘制的功能，编写过程可见：https://blog.csdn.net/Stark_/article/details/129003839

#include <ansi_c.h>
#include <rs232.h>
#include <cvirte.h>
#include <userint.h>
#include "SerialDebug.h"

#define MAX_BUF_NUM 512

static int panelHandle; //主界面句柄

int comSelect = 0; //串口号
int status;
int ComState = 0; //串口开关状态
char info[MAX_BUF_NUM+1]; //串口数据缓冲区
//设置页面控件状态，stat = 0表示关闭，1表示打开
//SetCtrlAttribute(,,ATTR_DIMMED,)将对应控件属性变暗和变亮，以禁用和使用对应控件
int CVIFUNC DimObject(int stat)
{
   SetCtrlAttribute(panelHandle,PANEL_COMSELECT,ATTR_DIMMED,stat); //串口号选择
   SetCtrlAttribute(panelHandle,PANEL_BAUDSELECT,ATTR_DIMMED,stat); //波特率
   SetCtrlAttribute(panelHandle,PANEL_CHECKSELECT,ATTR_DIMMED,stat);//校验位
   SetCtrlAttribute(panelHandle,PANEL_LONGSELECT,ATTR_DIMMED,stat); //数据位
   SetCtrlAttribute(panelHandle,PANEL_STOPSELECT,ATTR_DIMMED,stat);//停止位
   SetCtrlAttribute(panelHandle,PANEL_OPEN_COM,ATTR_DIMMED,stat); //打开串口

   SetCtrlVal(panelHandle,PANEL_LED,stat); //LED

   SetCtrlAttribute(panelHandle,PANEL_CLOSE_COM,ATTR_DIMMED,!stat); //关闭串口
   SetCtrlAttribute(panelHandle,PANEL_SEND,ATTR_DIMMED,!stat);//发送

   return 0;
}

int main (int argc, char *argv[])
{
   if (InitCVIRTE (0, argv, 0) == 0)
       return -1;   /* out of memory */
   if ((panelHandle = LoadPanel (0, "SerialDebug.uir", PANEL)) < 0)
       return -1;
   DimObject(0);
   DisplayPanel (panelHandle);
   RunUserInterface ();
   DiscardPanel (panelHandle);
   return 0;
}

int CVICALLBACK PanelMain (int panel, int event, void *callbackData,
                       int eventData1, int eventData2)
{
   switch (event)
   {
       case EVENT_GOT_FOCUS:

break;
case EVENT_LOST_FOCUS:

           break;
       case EVENT_CLOSE:
               QuitUserInterface (0);//关闭面板0（主面板）
           break;
   }
   return 0;
}

int CVICALLBACK ComOpen (int panel, int control, int event,
                       void *callbackData, int eventData1, int eventData2)
{
   int comValue,baudValue,checkValue,longValue,stopValue;
   switch (event)
   {
       case EVENT_COMMIT:
               GetCtrlVal(panelHandle,PANEL_COMSELECT,&comValue); //获取串口号
               GetCtrlVal(panelHandle,PANEL_BAUDSELECT,&baudValue); //获取波特率
               GetCtrlVal(panelHandle,PANEL_CHECKSELECT,&checkValue);//获取校验位
               GetCtrlVal(panelHandle,PANEL_LONGSELECT,&longValue);//获取数据位
               GetCtrlVal(panelHandle,PANEL_STOPSELECT,&stopValue);//获取停止位
               //设置和打开串口
               status = OpenComConfig(comValue,"",baudValue,checkValue,longValue,stopValue,MAX_BUF_NUM,MAX_BUF_NUM);
               if(status!=0)
               {
                   MessagePopup("Error","config failed!"); //弹窗提示
                   ComState = 0;
                   return 0;
               }
               SetCTSMode(comValue,LWRS_HWHANDSHAKE_OFF); /* 禁止硬件握手，即不用RTS/CTS和DTR/DSR */
               FlushInQ(comValue); //清空输入队列的缓存数据
               FlushOutQ(comValue); //清空输出队列的缓存数据
               comSelect = comValue;
               DimObject(1);
               ComState = 1; //串口开启状态
           break;
   }
   return 0;
}

int CVICALLBACK ClearTextBox (int panel, int control, int event,
                           void *callbackData, int eventData1, int eventData2)
{
   switch (event)
   {
       case EVENT_COMMIT:
               if(control == PANEL_CLEARRECEIVE)//清除接收控件
                   ResetTextBox(panelHandle,PANEL_RECEIVETEXT,"\0");//清除接收框
               else
                   ResetTextBox(panelHandle,PANEL_SENDTEXT,"\0");//清除发送框
           break;
   }
   return 0;
}

int CVICALLBACK Send (int panel, int control, int event,
                   void *callbackData, int eventData1, int eventData2)
{
   switch (event)
   {
       case EVENT_COMMIT:
               if(!comSelect) return -1; //发送出错
               GetCtrlVal(panelHandle,PANEL_SENDTEXT,info);//获取要发送的文本
               status = ComWrt(comSelect,info,strlen(info));//发送
               if(status != strlen(info))
                   MessagePopup("Error","Send data failed!"); //弹窗提示
           break;
   }
   return 0;
}

int CVICALLBACK Timer (int panel, int control, int event,
                   void *callbackData, int eventData1, int eventData2)
{
   int i = 0;
   int len = 0;
   double point = 0;

   switch (event)
   {
       case EVENT_TIMER_TICK:
               if(ComState)
               {
                   if(!comSelect) return -1;
                   SetComTime(comSelect,1); //设置一帧数据的接收超时时间为1s
                   len = GetInQLen(comSelect);
                   status = ComRd(comSelect,info,len);//接收,GetInQLen用于得到Com口的输入队列数据缓存的大小
                   if(status<=0)
                   {
                       //MessagePopup("Error","Read data failed!"); //弹窗提醒没有读取到信息
                       break;
                   }
                   //将信息写入接收框
                   info[status] = '\0';
                   SetCtrlVal(panelHandle,PANEL_RECEIVETEXT,info); //设置接收文本框显示info的内容
                   SetActiveCtrl(panelHandle,PANEL_RECEIVETEXT);

                   if((len == 2)||(info[2] == 0x0D)) //收到两个字符，或者第三个字符是回车
                   {
                       point = (info[0]-48)*10 + (info[1]-48); //接收一个两位数，比如 01、09、10、90、AB
                       if((point>=0)&&(point<=99))//判定这个两位数属于00-99之间
                       {
                           PlotStripChartPoint(panelHandle,PANEL_WAVE_DISPLAY,point); //对于在范围内的数据进行绘制点
                       }
                   }

                   for(0;i<len;i++)
                   {
                       info[i]=0;
                       i++;
                   }
               }
           break;
   }
   return 0;
}

int CVICALLBACK ComClose (int panel, int control, int event,
                       void *callbackData, int eventData1, int eventData2)
{
   switch (event)
   {
       case EVENT_COMMIT:
           CloseCom(comSelect);       //关闭串口
           comSelect = 0;
           DimObject(0);
           ComState = 0;
           break;
       case EVENT_TIMER_TICK:

           break;
   }
   return 0;
}

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