UDS升级入门，手把手教你——QT上位机开发1-编程知识

上位机开发1
QT环境：
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1、环境搭建
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需要用到周立功相关接口，拿到库文件，进行二次开发
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使用以下文件
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新建立一个工程，或者网找一个demo工程，在原有的基础进行开发（建议使用第二种）。

并链接上这个库，进行can通信开发。

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以下就是库，暴露出来can通信接口

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具体接口使用可以看文档。
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2、CAN通信开发

目标：以500k/s的波特率与MCU进行CAN通信，可发可收。

CAN通信对象：


class Thread : public QThread
{Q_OBJECT
public:Thread();void stop();void OpenCANThread();void CloseCANThread();void ReceiveCANThread();void TransmitCANThread();//void OtaStart();
public:typedef DWORD(__stdcall VCI_OpenDevice)(DWORD,DWORD,DWORD);typedef DWORD(__stdcall VCI_ResetCAN)(DWORD DeviceType,DWORD DeviceInd,DWORD CANInd);typedef DWORD(__stdcall VCI_CloseDevice)(DWORD DeviceType,DWORD DeviceInd);typedef DWORD(__stdcall VCI_InitCAN)(DWORD DeviceType, DWORD DeviceInd, DWORD CANInd, PVCI_INIT_CONFIG pInitConfig);typedef DWORD(__stdcall VCI_StartCAN)(DWORD DeviceType,DWORD DeviceInd,DWORD CANInd);typedef ULONG(__stdcall VCI_Transmit)(DWORD DeviceType,DWORD DeviceInd,DWORD CANInd,PVCI_CAN_OBJ pSend,ULONG Len);typedef ULONG(__stdcall VCI_Receive)(DWORD DeviceType,DWORD DeviceInd,DWORD CANInd,PVCI_CAN_OBJ pReceive,ULONG Len,INT WaitTime/*=-1*/);typedef ULONG(__stdcall VCI_GetReceiveNum)(DWORD DeviceType,DWORD DeviceInd,DWORD CANInd);typedef DWORD(__stdcall VCI_ClearBuffer)(DWORD DeviceType,DWORD DeviceInd,DWORD CANInd);typedef DWORD(__stdcall VCI_ReadErrInfo)(DWORD DeviceType,DWORD DeviceInd,DWORD CANInd,PVCI_ERR_INFO pErrInfo);typedef DWORD(__stdcall VCI_ReadCANStatus)(DWORD DeviceType,DWORD DeviceInd,DWORD CANInd,PVCI_CAN_STATUS pCANStatus);typedef DWORD(__stdcall VCI_SetReference)(DWORD DeviceType,DWORD DeviceInd,DWORD CANInd,DWORD RefType,PVOID pData);typedef DWORD(__stdcall VCI_ReadBoardInfo)(DWORD DeviceType,DWORD DeviceInd,PVCI_BOARD_INFO pInfo);int devtype;//设备类型号int devind;//设备索引号int res;//保留参数，通常为0int canind;//第几路canint reftype;//参数类型VCI_Transmit *pTransmitCAN;VCI_Receive *pReceive;protected:void run();
private:volatile bool stopped;VCI_OpenDevice *pOpenDevice;VCI_ResetCAN *pResetCAN;VCI_CloseDevice *pCloseDevice;VCI_InitCAN *pInitCAN;VCI_StartCAN *pStartCAN;VCI_GetReceiveNum *pGetReceiveNum;VCI_ClearBuffer *pClearBuffer;VCI_ReadErrInfo *pReadErrInfoCAN;VCI_ReadCANStatus *pReadCANStatus;VCI_SetReference *pSetReference;VCI_ReadBoardInfo *pReadBoardInfo;
};

初始化

devtype=VCI_USBCAN2;//设备类型USBCAN2devind=0;//设备索引号res=0;canind=0;//CAN通道0reftype=0;//参数类型bool ok;VCI_ERR_INFO vei;VCI_CAN_OBJ preceive[100];VCI_CAN_OBJ psend;int baud=0x10000000;//参数有关数据缓冲区地址首指针//导入库QLibrary lib("usbcan.dll");if(true==lib.load())qDebug()<<"usbcan.dll load ok";hander_init();pOpenDevice = (VCI_OpenDevice *)lib.resolve("VCI_OpenDevice");pCloseDevice = (VCI_CloseDevice *)lib.resolve("VCI_CloseDevice");pInitCAN = (VCI_InitCAN *)lib.resolve("VCI_InitCAN");pStartCAN = (VCI_StartCAN *)lib.resolve("VCI_StartCAN");pTransmitCAN = (VCI_Transmit *)lib.resolve("VCI_Transmit");pReceive = (VCI_Receive *)lib.resolve("VCI_Receive");pGetReceiveNum = (VCI_GetReceiveNum *)lib.resolve("VCI_GetReceiveNum");pClearBuffer = (VCI_ClearBuffer *)lib.resolve("VCI_ClearBuffer");pReadErrInfoCAN = (VCI_ReadErrInfo*)lib.resolve("VCI_ReadErrInfo");pResetCAN=(VCI_ResetCAN *)lib.resolve("VCI_ResetCAN");pSetReference=(VCI_SetReference *)lib.resolve("VCI_SetReference");pReadBoardInfo=(VCI_ReadBoardInfo *)lib.resolve("VCI_ReadBoardInfo");pReadCANStatus=(VCI_ReadCANStatus *)lib.resolve("VCI_ReadCANStatus");

打开CAN通道

    VCI_ERR_INFO vei;VCI_CAN_OBJ preceive[100];VCI_CAN_OBJ psend;int baud=0x10000000;//参数有关数据缓冲区地址首指针//打开设备if(pOpenDevice(devtype,devind,res)==STATUS_ERR ){if(pReadErrInfoCAN(devtype,devind,canind,&vei)!=STATUS_ERR){qDebug()<<"打开失败："<<QString::number(vei.ErrCode,16);}elseqDebug()<<"error";return;}elseqDebug()<<"open successed";//初始化VCI_INIT_CONFIG init_config;init_config.Mode=0;//0正常模式，1为只听模式init_config.Filter=1;//滤波方式，单滤波init_config.Timing0=0x00;//定时器0init_config.Timing1=0x1c;//定时器1init_config.AccCode=0x10000000;//验收码init_config.AccMask=0xFFFFFFFF;//屏蔽码全部接收if(pInitCAN(devtype,devind,canind,&init_config)==STATUS_ERR){qDebug("Init Error");pCloseDevice(devtype,devind);return;}elseqDebug()<<"Init successed";//读取设备信息VCI_BOARD_INFO vbi;if(pReadBoardInfo(devtype,devind,&vbi)!=STATUS_ERR){qDebug()<<"CAN通道数："<<vbi.can_Num;qDebug()<<"硬件版本号:"<<vbi.hw_Version;qDebug()<<"接口库版本号："<<vbi.in_Version;qDebug()<<"中断号"<<vbi.irq_Num;}//设置设备参数if(pSetReference(devtype,devind,canind,reftype,&baud)==STATUS_ERR){qDebug("set reference error");pCloseDevice(devtype,devind);return;}//清除缓冲区pClearBuffer(devtype,devind,canind);//启动设备if(pStartCAN(devtype,devind,canind)==STATUS_ERR){qDebug()<<"start fail";pCloseDevice(devtype,devind);return;}elseqDebug()<<"start successed";

选择正常模式、单滤波、500kbps、报文全接收

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数据发送：

VCI_CAN_OBJ psend;//发送ULONG Tr;QString  buffer = "";psend.ID=0x000007d1;psend.SendType=0;psend.RemoteFlag=0;psend.ExternFlag=0;psend.DataLen=3;psend.Data[0]=0x02;psend.Data[1]=0x10;psend.Data[2]=0x01;if(psend.DataLen < 8){for(int i = psend.DataLen;i < 8 ;i++){psend.Data[i] = 0xAA;}psend.DataLen = 8;}Tr=pTransmitCAN(devtype,devind,canind,&psend,1);

数据接收

res=pGetReceiveNum(devtype,devind,canind);if(res > 0){res=pReceive(devtype,devind,canind,preceive,50,200);for(int i=0;i<res;i++){frame_re.fr_format = CBUS_FR_FRM_STD;frame_re.id_type = CBUS_ID_T_STANDARD;frame_re.dlc = preceive[i].DataLen;frame_re.id = preceive[i].ID;memcpy(frame_re.dt, preceive[i].Data, frame_re.dlc);iso15765_enqueue(&handler_15765, &frame_re);}}

3、UI设计

目标：

CAN设备：开启和关闭

升级文件：文件路径

OAT：升级进度
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