mirror of
https://github.com/NanjingForestryUniversity/MinXuan.git
synced 2025-11-08 14:24:11 +00:00
295 lines
8.1 KiB
C++
295 lines
8.1 KiB
C++
#include "capture.h"
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#include <queue>
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U32 *g_pAIBuf=NULL; //数据指针
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extern void AI_EndCallBack();
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void Capture::run()
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{
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init_Capture();
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}
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Capture::Capture(QObject *parent) : QThread(parent)//进行DMA缓冲区的内存分配，并检查分配是否成功。
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{
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/*
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* 查找设备
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* */
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bool ret = findDevice();
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if(ret==false){
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qDebug()<<"cannot find device";
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}else{
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qDebug()<<"find device";
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}
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qDebug()<<"g_hCard: "<<g_hCard;
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/*
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* allocate a memory for user DMA buffer提供数据内存空间
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* */
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DWORD mem_size = AI_SAMPLE_COUNT * sizeof(I32) * 3; // 空间大小
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m_hMem = GlobalAlloc(GMEM_ZEROINIT, mem_size); //设初值为0
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g_pAIBuf = (U32*)GlobalLock(m_hMem);
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if (g_pAIBuf == NULL)
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{
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qDebug()<<"Memory allocation failed "<<MB_OK;
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}
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}
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//析构函数释放之前在构造函数中分配的内存。
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Capture::~Capture()
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{
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if(m_hMem != NULL)
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{
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GlobalUnfix(m_hMem);
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GlobalUnlock(m_hMem);
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GlobalFree(m_hMem);
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m_hMem = NULL;
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}
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if(g_pAIBuf!=NULL)
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{
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delete []g_pAIBuf;
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}
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}
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bool Capture::init_Capture()
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{
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I16 err;
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/*
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* 注册g_hCard（若不注册，下面配置通道直接返回错误码），注册设备名：card
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* 错误码：
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*
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* */
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card = UD_Register_Card(USB_2405, g_hCard);
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if(card<0)
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{
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printf("UD_Register_Card Error: %d\n", card);
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}
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/*
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* 配置通道0 1 2 3
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* 通过模块ID ModuleNum通知UD-DASK库为USB-2405模块选择的模拟输入类型。
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* 在调用函数执行连续模拟输入操作之前，必须调用此函数。
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* Informs UD-DASK library of the analog input-type selected for the USB-2405 module
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* with module ID ModuleNum. You must call this function before calling function to
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* perform continuous analog input operation.
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* 该配置包括三个部分-输入型、耦合型和IEPE设置。
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* 请按位或相关设置。有效设置如下所示：输入类型的有效设置为：P2405_AI_Differential或P2405_AI_PseudoDifferential
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* 有效的耦合类型设置为：P2405_AI_Coupling_AC或P2405_AI_Coupling_None。
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* 有效的IEPE设置为：P2405_AI_EnableIEPE或P2405_AI_DisableIEPE
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* */
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err = UD_AI_2405_Chan_Config(card, ( P2405_AI_DisableIEPE | P2405_AI_Coupling_None | P2405_AI_Differential), \
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( P2405_AI_DisableIEPE | P2405_AI_Coupling_None | P2405_AI_Differential), \
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( P2405_AI_DisableIEPE | P2405_AI_Coupling_None | P2405_AI_Differential), \
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( P2405_AI_DisableIEPE | P2405_AI_Coupling_None | P2405_AI_Differential) );
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if (err != NoError)
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{
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qDebug()<<"UD_AI_2405_Chan_Config error= "<<err;
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return false;
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}
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/*
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* 通过模块ID ModuleNum通知UD-DASK库USB-2405模块的触发设置。
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* 在调用函数执行连续模拟输入操作之前，必须调用此函数。
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* Trigger-Mode:: P2405_AI_TRGMOD_POST: Post-trigger.
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P2405_AI_TRGMOD_DELAY: Delay-trigger.
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P2405_AI_TRGMOD_PRE: Pre-trigger.
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P2405_AI_TRGMOD_MIDDLE: Middle-trigger.
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P2405_AI_TRGMOD_GATED: Gated-trigger.
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* */
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err = UD_AI_2405_Trig_Config(card, P2405_AI_CONVSRC_INT, P2405_AI_TRGMOD_POST, P2405_AI_TRGSRC_SOFT, 0, 0, 0, 0 );
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if (err != NoError)
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{
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qDebug()<<"UD_AIO_2405_TrgSource_Config error= "<<err;
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return false;
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}
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/*
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* 启动双缓冲数据采集模式1
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*
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* Enable / disable the double-buffered data acquisition mode.
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* */
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err = UD_AI_AsyncDblBufferMode(card, 1); // double-buffer mode
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if (err != NoError)
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{
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qDebug()<<"UD_AI_AsyncDblBufferMode error= "<<err;
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return false;
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}
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/*
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* 回调函数（将数据发给界面显示）
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* 控制并通知用户的应用程序何时发生指定的DAQ事件。
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* 通知通过用户指定的回调函数执行。
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* */
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err = UD_AI_EventCallBack_x64 (card, 1/* enable*/ ,DBEvent, (ULONG_PTR) AI_EndCallBack );
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if (err != NoError)
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{
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qDebug()<<"UD_AI_2405_SampleRate_Set() failed, error code = "<<err;
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return false;
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}
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/*
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* 将每个通道里都设置好输入电压m_wRange
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* m_wChan[]存放id号
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* */
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for( int i=0; i<m_wSelectedChans; i++ )
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{
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m_wChan[i] = i;
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m_wGain[i] = m_wRange;
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qDebug()<<"m_wGain"<<i<<": "<<m_wGain[i];
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}
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/*
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* 此功能以接近指定速率的速率对指定模拟输入通道执行连续A/D转换。
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* 此功能利用通道增益队列功能执行多通道模拟输入。
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* */
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err = UD_AI_ContReadMultiChannels(card, m_wSelectedChans, m_wChan, m_wGain, (U16*)g_pAIBuf, (AI_SAMPLE_COUNT*m_wSelectedChans), (F64)m_fSampleRate, ASYNCH_OP);
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if (err != NoError)
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{
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qDebug()<<"UD_AI_ContReadMultiChannels error= "<<err;
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return false;
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}
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return true;
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}
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/*
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* 停止采集
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* */
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bool Capture::stopCapture()
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{
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U32 count;
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I16 ret = UD_AI_AsyncClear(card, &count);
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if (ret != NoError)
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{
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qDebug()<<"UD_AI_AsyncClear error= "<<ret;
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return false;
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}
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// qDebug()<<"停止采集"<<ret;
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UD_AI_EventCallBack_x64 (card, 0 , DBEvent, NULL );
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// UD_AI_EventCallBack_x64 (card, 1 , AIEnd, NULL );
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UD_Release_Card(card);
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return true;
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}
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//看设备是否存在
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bool Capture::findDevice()
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{
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U16 wModuleNum;
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U16 i;
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nErr_device = UD_Device_Scan(&wModuleNum, AvailModules);
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qDebug()<<"wModuleNum： "<<wModuleNum<<"wCardID: "<<AvailModules[0].wCardID<<"wModuleType: "<<AvailModules[0].wModuleType;
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g_hCard = AvailModules[0].wCardID;
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if( nErr_device != NoError )
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{
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qDebug()<<"scan device failure!!!";
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return FALSE;
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}
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for( i = 0; i < wModuleNum; i++ )
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{
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if( AvailModules[i].wModuleType == USB_2405 )
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{
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g_hCard = AvailModules[i].wCardID;
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break;
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}
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}
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return true;
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}
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int Capture::display_buffer_data(U32 *pBuf)
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{
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U32 index;
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double newY = -1;
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U32 dwSampleCount;
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I32 ai_data;
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//AI_SAMPLE_COUNT 20480
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//m_wSelectedChans 3
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dwSampleCount = (AI_SAMPLE_COUNT*m_wSelectedChans)/2;
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// dwSampleCount = AI_SAMPLE_COUNT/2; //half-buffer
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// qDebug()<<"g_pAIBuf: "<<*g_pAIBuf;
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for(index=0; index<dwSampleCount; index+=2) //采样点数512，256为半个缓冲区
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{
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U32 dwTemp=0;
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cur_channel = index%(m_wSelectedChans);
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dwTemp = pBuf[index];
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// qDebug()<<"cur_channel: "<<cur_channel<<" dwTemp: "<<dwTemp;
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//当数据高8位为1时，将其放在-10到10v的y负半轴
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if( dwTemp & 0x00800000 )
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{
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dwTemp = (dwTemp | 0xFF000000);
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ai_data = (I32)(dwTemp);
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newY=-(double)(10*(1-(((double)(ai_data + 0x7FFFFF)/0x7FFFFF))));
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}
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//将数据放在y正半轴
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else
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{
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ai_data = (I32)(dwTemp);
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newY=(double)((10*((double)(ai_data)/0x7FFFFF)));
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}
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qDebug()<<"cur_channel: "<<cur_channel<<" ai_data: "<<ai_data;
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qDebug()<<"newY: "<<newY;
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switch(cur_channel)
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{
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case 0:
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qDebug()<<"cur_channel: "<<cur_channel<<"index: "<<index<<" ai_data: "<<ai_data;
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qDebug()<<"ai_data channel 0: : "<<newY;
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emit vibrationValue0(newY);
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count0++;
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// qDebug()<<"v0计数: "<<count0;
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break;
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case 1:
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emit vibrationValue1(newY);
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count1++;
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break;
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case 2:
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qDebug()<<"ai_data channel 2: "<<newY;
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emit vibrationValue2(newY);
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break;
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case 3:
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qDebug()<<"ai_data channel 3: "<<newY;
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emit vibrationValue3(newY);
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count2++;
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break;
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}
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Sleep(5);
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}
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return 0;
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}
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