Qt上位机同时使用ZLG-USBCan2卡与USBCan2C

QLibrary实现动态库调用，上位机同时兼任使用ZLG-USBCan2卡与USBCan2C

ZLG-USBCan2

USBCan2C

ZLG-USBCan2卡是行业中最常用的CAN卡，但是价格较贵；而一般场合的情况下可以使用USBCan2C替代使用，价格只有前者1/8。需要USBCan2C只需要更换动态库文件，就可以替代USBCan2C。故编写一个测试上位机同时兼任两者，再需要的时候替换。
构建一个类，通过QLibrary实现动态库切换。代码如下：
一、CPP文件

#include "drivecan.h"DriveCAN::DriveCAN(QObject *parent) : QObject(parent)
{}DriveCAN:: ~DriveCAN()
{this->Close();
}DriveCAN::DriveCAN(DWORD DeviceType,DWORD DeviceInd)
{this->DeviceType = DeviceType;this->DeviceInd = DeviceInd;
}bool DriveCAN::SelectDll(DWORD DeviceType,bool USBCAN2C_Flag)
{if((DeviceType==VCI_USBCAN2_C) && (USBCAN2C_Flag == true)){if(!MyLibrary.isLoaded()){MyLibrary.setFileName(QCoreApplication::applicationDirPath() + "/driver/2C/ControlCAN.dll");if(!MyLibrary.load()){qDebug()<< "load dll for 2C err" << MyLibrary.fileName();return false;}}}else{if(!MyLibrary.isLoaded()){MyLibrary.setFileName(QCoreApplication::applicationDirPath() + "/driver/zlg/ControlCAN.dll");if(!MyLibrary.load()){qDebug()<< "load dll for 2EU err" << MyLibrary.fileName();return false;}}}pVCI_OpenDevice = (CAN_VCI_OpenDevice)MyLibrary.resolve("VCI_OpenDevice");pVCI_CloseDevice = (CAN_VCI_CloseDevice)MyLibrary.resolve("VCI_CloseDevice");pVCI_InitCAN = (CAN_VCI_InitCAN)MyLibrary.resolve("VCI_InitCAN");pVCI_StartCAN = (CAN_VCI_StartCAN)MyLibrary.resolve("VCI_StartCAN");pVCI_GetReceiveNum = (CAN_VCI_GetReceiveNum)MyLibrary.resolve("VCI_GetReceiveNum");pVCI_Transmit = (CAN_VCI_Transmit)MyLibrary.resolve("VCI_Transmit");pVCI_Receive = (CAN_VCI_Receive)MyLibrary.resolve("VCI_Receive");pVCI_SetReference = (CAN_VCI_SetReference)MyLibrary.resolve("VCI_SetReference");pVCI_ClearBuffer = (CAN_VCI_ClearBuffer)MyLibrary.resolve("VCI_ClearBuffer");if(!pVCI_OpenDevice || !pVCI_InitCAN || !pVCI_StartCAN || !pVCI_CloseDevice || !pVCI_CloseDevice){qDebug()<< "函数加载失败" << MyLibrary.fileName();return false;}return true;
}bool DriveCAN::Open(DWORD DeviceType,DWORD DeviceInd)
{int nReserved = 0;DWORD dwRel = STATUS_ERR;this->DeviceType = DeviceType;this->DeviceInd = DeviceInd;if(this->DeviceType == VCI_USBCAN2_C)this->DeviceType = 4;dwRel = pVCI_OpenDevice(this->DeviceType, this->DeviceInd, nReserved);if (dwRel != STATUS_OK)return false;return true;
}bool DriveCAN::Init(int Channel,int Bode)
{VCI_INIT_CONFIG pInitConfig;DWORD dwRel = STATUS_ERR;DWORD RefType = 0;DWORD BaudRate = 0x1C0008;//0x060007PVOID pData;pData= &BaudRate;pInitConfig.AccCode = 0x00000000;pInitConfig.AccMask = 0xFFFFFFFF;pInitConfig.Filter = 0;pInitConfig.Mode = 0;pInitConfig.Reserved = 0;switch(Bode){case 250:pInitConfig.Timing0 = 0x01;pInitConfig.Timing1 = 0x1c;BaudRate = 0x1C0008;break;case 500:pInitConfig.Timing0 = 0x00;pInitConfig.Timing1 = 0x1c;BaudRate = 0x060007;break;default:pInitConfig.Timing0 = 0x01;pInitConfig.Timing1 = 0x1c;BaudRate = 0x1C0008;break;}//本人使用的 ZLG USBCAN-2E-U 需要特殊设置if(DeviceType == VCI_USBCAN_2E_U)dwRel = pVCI_SetReference(this->DeviceType, this->DeviceInd, Channel,RefType,pData);elsedwRel = pVCI_InitCAN (this->DeviceType, this->DeviceInd, Channel, &pInitConfig);if (dwRel == STATUS_ERR){pVCI_CloseDevice (this->DeviceType, this->DeviceInd);return false;}return true;
}bool DriveCAN::Start(int Channel)
{DWORD dwRel;dwRel = pVCI_StartCAN (this->DeviceType, this->DeviceInd, Channel);if (dwRel == STATUS_ERR){Close();return false;}return true;
}void DriveCAN::Close()
{pVCI_CloseDevice(this->DeviceType, this->DeviceInd);
}int DriveCAN::SendData (UINT ID,BYTE ExternFlag,QString CANBuf,int Channel)
{QStringList CANBufList;BYTE Len;bool ok;DWORD dwRel;CANBuf=CANBuf.trimmed ();CANBuf=CANBuf.simplified ();CANBufList = CANBuf.split (" ");Len = CANBufList.count ();if(Len > 8)Len = 8;VCI_CAN_OBJ vco[1];// 定义一帧的结构体数组// 中间略去其他函数代码vco[0].ID = ID;// 填写第一帧的IDvco[0].SendType = 0;// 正常发送vco[0].RemoteFlag = 0;// 数据帧vco[0].ExternFlag = ExternFlag;// 扩展帧vco[0].DataLen = Len;// 数据长度1个字节for(int i=0;i<vco[0].DataLen;i++){QString qstr =CANBufList.at (i);int val=qstr.toInt(&ok,16);//以十六进制数读入vco[0].Data[i]=val;}dwRel = pVCI_Transmit (this->DeviceType, this->DeviceInd, Channel, vco, 1); // 发送一帧return dwRel;
}int DriveCAN::RecData ( VCI_CAN_OBJ vco[1],int Channel)
{DWORD dwRel;// 中间略去其他函数代码dwRel=pVCI_Receive (this->DeviceType, this->DeviceInd, Channel, vco, 1, 400);// 一次最多能接收100帧，如果缓冲区无数据，接收函数等待400毫秒后退出，返回0if(dwRel == 0 || dwRel == 0xFFFFFFFF)return false;return true;
}int DriveCAN::RecData_100 ( VCI_CAN_OBJ vco[100],int Channel)
{DWORD dwRel;// 中间略去其他函数代码dwRel=pVCI_Receive (this->DeviceType, this->DeviceInd, Channel, vco, 100, 400);// 一次最多能接收100帧，如果缓冲区无数据，接收函数等待400毫秒后退出，返回0if(dwRel == 0 || dwRel == 0xFFFFFFFF)return false;return true;
}void DriveCAN::ClearBuffer(int Channel)
{DWORD dwRel;dwRel = pVCI_ClearBuffer(this->DeviceType,this->DeviceInd,Channel);
}

二、头文件

#ifndef DRIVECAN_H
#define DRIVECAN_H#include <QObject>
#include <QDebug>
#include <QLibrary>
#include <QCoreApplication>#include "ControlCan.h"typedef DWORD __stdcall (*CAN_VCI_OpenDevice)(DWORD ,DWORD ,DWORD );
typedef DWORD __stdcall (*CAN_VCI_CloseDevice)(DWORD ,DWORD);
typedef DWORD __stdcall (*CAN_VCI_InitCAN)(DWORD, DWORD, DWORD, PVCI_INIT_CONFIG);
typedef DWORD __stdcall (*CAN_VCI_StartCAN)(DWORD ,DWORD ,DWORD );
typedef ULONG __stdcall (*CAN_VCI_GetReceiveNum)(DWORD ,DWORD ,DWORD);
typedef ULONG __stdcall (*CAN_VCI_Transmit)(DWORD ,DWORD ,DWORD ,PVCI_CAN_OBJ ,ULONG );
typedef ULONG __stdcall (*CAN_VCI_Receive)(DWORD ,DWORD,DWORD ,PVCI_CAN_OBJ ,ULONG ,INT );
typedef DWORD __stdcall (*CAN_VCI_SetReference)(DWORD , DWORD , DWORD , DWORD , PVOID );
typedef DWORD __stdcall (*CAN_VCI_ClearBuffer)(DWORD ,DWORD ,DWORD );class DriveCAN : public QObject
{Q_OBJECTsignals:public slots:public:explicit DriveCAN(QObject *parent = nullptr);~DriveCAN();DriveCAN(DWORD DeviceType,DWORD DeviceInd);private:DWORD DeviceType;DWORD DeviceInd;QLibrary MyLibrary;CAN_VCI_OpenDevice    pVCI_OpenDevice;CAN_VCI_CloseDevice   pVCI_CloseDevice;CAN_VCI_InitCAN       pVCI_InitCAN;CAN_VCI_StartCAN      pVCI_StartCAN;CAN_VCI_GetReceiveNum pVCI_GetReceiveNum;CAN_VCI_Transmit      pVCI_Transmit;CAN_VCI_Receive       pVCI_Receive;CAN_VCI_SetReference  pVCI_SetReference;CAN_VCI_ClearBuffer   pVCI_ClearBuffer;public:bool SelectDll(DWORD DeviceType,bool USBCAN2C_Flag);void SetParam(DWORD DeviceType,DWORD DeviceInd);bool Open(DWORD DeviceType,DWORD DeviceInd);bool Init(int Channel,int Bode);bool Start(int Channel);void Close();int SendData (UINT ID,BYTE ExternFlag,QString CANBuf,int Channel);int RecData ( VCI_CAN_OBJ vco[1],int Channel);int RecData_100 ( VCI_CAN_OBJ vco[100],int Channel);void ClearBuffer(int Channel);};#endif // DRIVECAN_H

示例下载
https://download.csdn.net/download/FQJ19950804/18938976

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Qt上位机同时使用ZLG-USBCan2卡与USBCan2C

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