comedi_hwi_dev.C

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/* Gxsm - Gnome X Scanning Microscopy
 * universal STM/AFM/SARLS/SPALEED/... controlling and
 * data analysis software
 * 
 * Copyright (C) 1999,2000,2001,2002,2003 Percy Zahl
 *
 * Authors: Percy Zahl <zahl@users.sf.net>
 * additional features: Andreas Klust <klust@users.sf.net>
 * WWW Home: http://gxsm.sf.net
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

/* -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 8 c-style: "K&R" -*- */

/* irnore this module for docuscan
% PlugInModuleIgnore
 */


#include <locale.h>
#include <libintl.h>


#include <fcntl.h>
#include <sys/ioctl.h>

#include "glbvars.h"
#include "comedi_hwi.h"

// you may want to handle/emulate some DSP commands later...
#include "dsp-pci32/xsm/dpramdef.h"
#include "dsp-pci32/xsm/xsmcmd.h"

// enable debug:
#define COMEDI_DEBUG(S) XSM_DEBUG (DBG_L4, "comedi_hwi_dev: " << S )

/* Construktor for Gxsm comedi support base class
 * ==================================================
 * - open device
 * - init things
 * - ...
 */
comedi_hwi_dev::comedi_hwi_dev(){
        COMEDI_DEBUG("open driver");
        max_points_per_line = 400000; // what ever you are willing to handle...
        // here you may want to open you comedi device(s) 
        // and do some basic initialisations if needed

// e.g. open like this, the device name in the Gxsm prefs is "xsmres.DSPDev"
//      comedi_drv = open(xsmres.DSPDev, O_RDWR);
}

/* Destructor
 * close device
 */
comedi_hwi_dev::~comedi_hwi_dev(){
        COMEDI_DEBUG("close driver");
//      close (comedi_drv);
}

void comedi_hwi_dev::ExecCmd(int Cmd){
        // Exec "DSP" command (additional stuff)

        // Put CMD to DSP for execution.
        // Wait until done and
        // call whenever you are waiting longer for sth.:
        // gapp->check_events(); // inbetween!
}

int comedi_hwi_dev::WaitExec(int data){
        return 0; // not needed today, always returns 0 
}

// you may want this later for mover and other tasks...
void comedi_hwi_dev::SetParameter(PARAMETER_SET &hps, int scanflg){
}

void comedi_hwi_dev::GetParameter(PARAMETER_SET &hps){
}

size_t comedi_hwi_dev::ReadData(void *buf, size_t count) { 
        // move data into buf
        // e.g.: return read(dsp_data, buf, count); 
        return count; // return num of data read form source successfully
}

int comedi_hwi_dev::ReadScanData(int y_index, int num_srcs, Mem2d *m[MAX_SRCS_CHANNELS]){
        static time_t t0 = 0; // only for demo
        int len = m[0]->GetNx();
        SHT *linebuffer = new SHT[len*num_srcs];

// create dummy data (need to read some stuff from driver/tmp buffer...)
// should use ReadData (see above) later!
// and should not block...

        COMEDI_DEBUG("ReadData:" << y_index);

        if (t0 == 0) t0 = time (NULL);
        int drift = (int) (time (NULL) - t0);
        if (y_index < 0) // 2D HS Area Capture/Scan
                for (int k=0; k<m[0]->GetNy (); ++k)
                        for (int i=0; i<num_srcs; ++i){
                                for (int j=0; j<len; ++j){
                                        double x = rx*Dx + j*Dx + drift*5;
                                        double y = ry*Dy + k*Dx;
                                        Transform(&x, &y);
                                        linebuffer[i*len + j] = (SHT)(1000.*sin(x/100.*2*M_PI)
                                                                      *cos(k/100.*2*M_PI));
                                }
                                if (m[i])
                                        m[i]->PutDataLine (k, linebuffer+i*len);
                        }
        else
                for (int i=0; i<num_srcs; ++i){
                        for (int j=0; j<len; ++j){
                                double x = rx*Dx + j*Dx + drift;
                                double y = ry*Dy;
                                Transform(&x, &y);
                                linebuffer[i*len + j] = (SHT)(1000.*sin(x/100.*2*M_PI)
                                                              *cos(y_index/100.*2*M_PI));
                        }
                        if (m[i])
                                m[i]->PutDataLine (y_index, linebuffer+i*len);
                }

// move data into mem2d objects -- it's done above already...
//      for (int i=0; i<num_srcs; ++i)
//              if (m[i])
//                      m[i]->PutDataLine (y_index, linebuffer+i*len);
        
        delete[] linebuffer;
        return 0;
}

int comedi_hwi_dev::ReadProbeData(int nsrcs, int nprobe, int kx, int ky, Mem2d *m, double scale){
        // later
        return 1;
}


/*
 * provide some info about the connected hardware/driver/etc.
 */
gchar* comedi_hwi_dev::get_info(){
        return g_strdup("*--Gxsm Comedi HwI base class--*\n"
                        "Comedi device: do not know\n"
                        "*--Features--*\n"
                        "SCAN: Yes\n"
                        "PROBE: No\n"
                        "ACPROBE: No\n"
                        "*--EOF--*\n"
                ); 
}

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