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ADTIME.C
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/*************************************************************************
**
** AD - Program to acquire analog data from a DT2821 a/d board
** and process it for spike waveforms on multiple 4 channel electrodes.
** Handles up to 8 channels using interrupt driven, or polled dual-DMA,
** triggered scan a/d conversion up to 250 KHz. Continuous storage
** to disk of up to 8 channels at an aggregate rate of 100KHz can
** be accomplished in the interrupt driven mode. SVGA display of
** acquired data and processed spike waveforms. Has been tested on
** Pentium P90, PCI, ATI Mach64; I486DX266, Cirrus 5826 VLB.
** Runs in 640K (minimum memory ???). Uses system timer to achieve
** an absolute temporal resolution of 1 msec. Optional use of a CTM05/10 can
** improve resolution.
** Support will be included for Dragon Tracker video tracking hardware.
**
** Current support summary:
** - 8 channels
** - 250 KHz max sampling rate
** - continuous acquisition, display, and disk storage up to 100 KHz
** - 4 channel spike detection
**
** Work in progress:
** - channel gain, threshold specification
** - extracted spike display and storage
** - spike parameter scatter plots
**
** Known problems:
** - rapid keystroke entry (e.g. hold down a key) causes a/d errors
** due to kb interrupts
** - graphics library has glitches which cause text display to occur
** at incorrect coordinates particularly during rapid update
**
** Developed with Borland C++ 4.0 under MSDOS6.2
**
** Created 10/17/94
** Written by Matthew A. Wilson, Ph.D.
** Assistant Professor
** Center for Learning and Memory
** Departments of Brain and Cognitive Sciences, and Biology
** Massachusetts Institute of Technology
** Cambridge, MA 02139
**
** and
** Loren Frank
** Graduate Student
** Department of Brain and Cognitive Sciences
** Massachusetts Institute of Technology
** Cambridge, MA 02139
**
**
** Copyright (c) 1994,
** Matthew A. Wilson and the Massachusetts Institute of Technology
** All Rights Reserved
** Duplication or use of this software without the expressed written
** consent of the author is strictly forbidden
**
*************************************************************************
*/
#include "adext.h"
/* Global variables */
#ifdef DAS-1800
WORD boardstatus;
#endif
extern int got_command; // indicates command on command bus
extern int got_command2; // indicates command on command bus 2
int count1 = 0, count2 = 0, count3 = 0, istart, location;
int spikesaves = 0;
ADInfo adinfo;
SystemInfo sysinfo;
WORD supcsr,adcsr; /* DT2821 register variables */
#ifdef BORLAND
void _interrupt (*oldadirq)();
void _interrupt (*oldnetworkvec)();
#endif
#ifdef MSVC
void _interrupt far *oldadirq;
void _interrupt far *oldnetworkvec;
#endif
char far tmpstring[200];
char far tmpstring2[200];
char far tmpstring3[200];
char far tmpstring4[200];
char far tmpstring5[200];
Button buttonlist[MAXBUTTONS];
MessageArea message_area[MAXBUTTONS];
#ifdef BORGRAPH
char *Fonts[NFONTS] = {
"DefaultFont", "TriplexFont", "SmallFont",
"SansSerifFont", "GothicFont", "ScriptFont", "SimplexFont", "TriplexScriptFont",
"ComplexFont", "EuropeanFont", "BoldFont"
};
char *LineStyles[] = {
"SolidLn", "DottedLn", "CenterLn", "DashedLn", "UserBitLn"
};
char *FillStyles[] = {
"EmptyFill", "SolidFill", "LineFill", "LtSlashFill",
"SlashFill", "BkSlashFill", "LtBkSlashFill", "HatchFill",
"XHatchFill", "InterleaveFill", "WideDotFill", "CloseDotFill"
};
char *TextDirect[] = {
"HorizDir", "VertDir"
};
char *HorizJust[] = {
"LeftText", "CenterText", "RightText"
};
char *VertJust[] = {
"BottomText", "CenterText", "TopText"
};
int GraphDriver; /* The Graphics device driver */
int GraphMode; /* The Graphics mode value */
double AspectRatio; /* Aspect ratio of a pixel on the screen*/
int MaxX, MaxY; /* The maximum resolution of the screen */
int MaxColors; /* The maximum # of colors available */
int ErrorCode; /* Reports any graphics errors */
struct palettetype palette; /* Used to read palette info */
#endif
/*
*****************************************************************
**
** Program structure:
** Miscellaneous Routines
** DT2821 Routines
** Data Processing/ISR Routines
** DMA Routines
** Display Routines
** IO Routines
** Main Program
**
*****************************************************************
*/
/*
************************************************************************
**
** Miscellaneous Routines
**
************************************************************************
*/
void SystemRestore(void)
{
int i;
BoardRestore();
#ifndef BORGRAPH
// restore the text mode
restext();
#endif
// free the dma buffers
for (i = 0; i < DMABUFFERS; i++) {
if(adinfo.dataptr[i]){
free(adinfo.dataptr[i]);
adinfo.dataptr[i] = NULL;
}
}
/* restore the interrupt service routine vector for the ad */
setvect(sysinfo.adirqvec, oldadirq);
/* and for the network packet driver */
setvect(sysinfo.networkvec, oldnetworkvec);
if(sysinfo.command_mode == SLAVE){
ClkRestoreSystem();
}
if(sysinfo.command_mode2 == SLAVE){
Clk2RestoreSystem();
}
if(sysinfo.tracker_enabled){
RestoreTracker();
}
}
void SystemExit(int errorlevel,char *string)
{
/*
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,"Press any key to exit\n");
_getch();
*/
ErrorMessage("Exiting...");
if (adinfo.fp){
DisableADIRQ;
fclose(adinfo.fp);
adinfo.fp = NULL;
EnableADIRQ;
}
ErrorMessage("Restoring...");
SystemRestore();
fprintf(stderr,"Errorcode %d: %s\n",errorlevel,string);
exit(errorlevel);
}
long pow2(WORD power)
{
if(power == 0) return(1);
return(1<<(power));
}
void AllocateBuffers(void)
{
int i;
/* allocate the DMA buffers */
adinfo.dataptr = (int **) malloc(sizeof(int *) * DMABUFFERS);
for (i = 0; i < DMABUFFERS; i++) {
allocbuff(adinfo.dataptr+i, adinfo.dma_bufsize);
/* get the DMA page and offset value for the first buffer */
GetDMAInfo(adinfo.dma_bufsize,adinfo.dataptr[i],
&adinfo.dmapage[i],&adinfo.dmabase[i]);
/* fprintf(stderr,"buffer %d maxsize:%u page:%u offset:%u ",
i,getDMAlength(adinfo.dataptr[i]),adinfo.dmapage[i],
adinfo.dmabase[i]);
StatusMessage(tmpstring); */
}
/* allocate space for the continuous display mode buffer */
if((adinfo.prevptr = (int *)calloc(adinfo.dma_bufsize,sizeof(int))) == NULL) {
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,
"MEMORY ERROR: unable to allocate prev buffer\n", i);
}
for(i=0;i<adinfo.nelectrodes;i++){
/* allocate a display buffer for old points to allow erasure */
if((adinfo.electrode[i].prevbufptr = (int *)calloc(
adinfo.dma_bufsize / NELECTRODES, sizeof(int))) == NULL){
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,
"MEMORY ERROR: unable to allocate prev buffer E%d\n",
i);
SystemExit(7,"prev buffer MEMORY ERROR");
}
/* allocate the spike buffers */
if((adinfo.electrode[i].spikebuf = (Spike *)calloc(
MAXSPIKES, sizeof(Spike))) == NULL){
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,
"MEMORY ERROR: unable to allocate spike buffer E%d\n", i);
SystemExit(7,"spike buffer MEMORY ERROR");
}
/* allocate space for the subthreshold buffer */
if ((adinfo.electrode[i].subthresh = (char *) calloc(
adinfo.nelect_chan, sizeof(char))) == NULL) {
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,
"MEMORY ERROR: unable to allocate subthreshold buffer E%d\n",
i);
SystemExit(7,"spike buffer MEMORY ERROR");
}
}
}
void ADSetup(void)
{
int i,j;
BoardSetup();
for(i=0;i<adinfo.nchannels;i++){
adinfo.channel[i].adgain = 0;
adinfo.channel[i].color = 15-i;
}
for(i=0;i<adinfo.nelectrodes;i++){
for(j=0;j<adinfo.nelect_chan;j++){
adinfo.electrode[i].channel[j] = j+i*adinfo.nelect_chan;
adinfo.electrode[i].thresh[j] = 200;
adinfo.electrode[i].subthresh[j] = 1;
}
adinfo.electrode[i].ntotal_spikes = 0;
}
}
short nextbuf(short buf)
/* returns the index of the next buffer */
{
return (buf + 1) % DMABUFFERS;
}
short prevbuf(short buf)
/* returns the index of the previous buffer */
{
return buf > 0 ? buf - 1 : DMABUFFERS - 1;
}
unsigned long compute_timestamp(short bufindex, unsigned long offset)
{
return *(adinfo.timestamp + bufindex) + (unsigned long) (((float) offset /
(float) adinfo.dma_bufsize) * adinfo.conversion_duration);
}
int getnelectrodes(void)
{
return adinfo.nelectrodes;
}
long DiskFree()
{
struct diskfree_t free;
long avail;
if (_dos_getdiskfree(0, &free) != 0) {
printf("Error in _dos_getdiskfree() call\n");
exit(1);
}
return (long) free.avail_clusters
* (long) free.bytes_per_sector
* (long) free.sectors_per_cluster;
}
/*
************************************************************************
**
** DT2821 A/D Routines
**
************************************************************************
*/
void ADResetClock(void)
{
#ifdef OLD
/* note that this will reset the PIO port as well */
outpw(SUPCSR,BIT0); /* initialize the board */
#endif
#ifdef DT2821
outpw(TMRCTR,adinfo.clockreg);
#endif
}
void InitAcq(void)
{
int i;
int boardstat;
/* initialize the DT2821 board */
if(boardstat = InitBoard()) {
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,"ERROR initializing board.\n");
SystemExit(boardstat,"Init board Error");
}
/* the DT2821 is now acquiring into buffer A */
DmaStatus; /* get supcsr variable */
/*
*/
adinfo.count = 0;
adinfo.nbuffers = adinfo.computed_used = 0;
adinfo.timestamp[0] = ReadTS();
adinfo.computed_timestamp = (double) adinfo.timestamp[0];
adinfo.dmadone = 0;
adinfo.error = 0;
adinfo.next_buf = 1;
for (i = 0; i < adinfo.nelectrodes; i++) {
adinfo.electrode[i].nspikes = 0;
adinfo.electrode[i].prevstart = adinfo.buflen;
}
for (i = 0; i < DMABUFFERS; i++)
adinfo.buffer_valid[i] = 0;
}
/*
************************************************************************
**
** Data Processing Routines
**
************************************************************************
*/
void interrupt GetCompletedBuffer(void)
{
int i;
long bufsize;
unsigned long time;
/*
fprintf(stderr, "in GetCompletedBuffer\n");
fprintf(stderr, "%2x %2x %2x %2x %2x\n",
inp(DATASELECT), inp(CONTROLA),
inp(CONTROLB), inp(CONTROLC), inp(STATUS));
*/
/* disable interrupts while processing */
disable();
#ifdef DT2821
if(sysinfo.debug){
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,"ISR: Buffer f%d F%d : ",
adinfo.next_buf,FilledBuffer);
}
#endif
/* check for a/d error status */
if(ErrorSet){
#ifdef DT2821
adinfo.error = adcsr;
#endif
#ifdef DAS-1800
adinfo.error = boardstatus;
#endif
goto aderror;
}
/*
** get the time of occurence of the completion of the dma transfer.
** Use the system clock for now, but later go to the CTIO board.
** Note that the time of buffer completion is the time of buffer
** onset for the subsequent buffer.
** Empirical testing has shown that about 50-100 msec of jitter
** can be expected in the actual time of interrupt generation.
** Therefore the computed timestamp is a more accurate measure
** as long as its overall consistency with the system clock can
** be maintained.
*/
time = ReadTS();
adinfo.nbuffers++;
adinfo.computed_timestamp += adinfo.conversion_duration;
if (time <= (unsigned long) adinfo.computed_timestamp + 2) {
/*
** jitter in the interrupt time can only push the read timestamp forward,
** so if the read timestamp is within 0.2 ms of the computed timestamp,
** use the read timestamp as the correct current time
*/
adinfo.timestamp[adinfo.next_buf] = time;
adinfo.computed_timestamp = (double) time;
}
else {
/* the computed timestamp is correct */
adinfo.timestamp[adinfo.next_buf] = (unsigned long)
adinfo.computed_timestamp;
adinfo.computed_used++;
}
/*
** In the ISR
** FilledBuffer should return the buffer index of the buffer
** currently being filled because the ISR is called after
** the dmadone bit is set and the buffer bit has been automatically
** switched to the next buffer. The adinfo.filled_buffer must
** be set after dmadone has been detected (call to ISR)
*/
adinfo.buffer_valid[adinfo.next_buf] = 1;
/*
** increment the next buffer index.
*/
/* adinfo.next_buf is the index of the buffer that is to be filled
next, so prevbuf(adinfo.next_buf) is the index of the buffer that was just filled */
adinfo.process_buf = prevbuf(adinfo.next_buf);
adinfo.next_buf = nextbuf(adinfo.next_buf);
adinfo.dmadone = 1;
adinfo.error = 0;
if(sysinfo.debug){
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,": buf %d valid :",
adinfo.next_buf);
}
/*
** check for the acq stop flag
*/
#ifdef DT2821
if(sysinfo.acq){
/* interrupt on error, clear dmadone, dual dma, a/d clocked dma */
outpw(SUPCSR,BIT14 | BIT13 | BIT12 | BIT10);
} else {
/* this is the last buffer so turn off dual-dma. Acq will
** stop on the next dma done
*/
/* interrupt on error, clear dmadone */
outpw(SUPCSR,BIT14 | BIT10);
#endif
#ifdef DAS-1800
if(sysinfo.acq){
// clear the status register
outp(STATUS, 0x80);
}
else {
// stop acquisition
outp(STATUS, 0x0);
outp(STATUS, 0x0);
// disable fifo and counters
outp(CONTROLA, 0x0);
#endif
if(sysinfo.debug){
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,
" *** terminate *** ");
}
// need to make sure A/D has actually stopped. This requires
// GetCompleteBuffer to be called twice. This condition is
// checked in StartAcq
sysinfo.stopped++;
}
/* fprintf(stderr, "GetCompletedBuffer section 2\n");
fprintf(stderr, "%2x %2x %2x %2x %2x\n",
inp(DATASELECT), inp(CONTROLA),
inp(CONTROLB), inp(CONTROLC), inp(STATUS));
*/
/*
** reprogram the DMA controller. Note that this changes the filled
** buffer index adinfo.filled_buffer to be consistent with FilledBuffer
*/
ProgramDMAController();
/* check for error */
if (ErrorSet)
#ifdef DT2821
adinfo.error = adcsr;
#endif
#ifdef DAS-1800
adinfo.error = boardstatus;
#endif
aderror:
if(adinfo.error != 0){
sprintf(tmpstring,"ISR: Buffer %d %ld : Error %X ",
prevbuf(adinfo.next_buf),
adinfo.timestamp[adinfo.process_buf],
adinfo.error);
ErrorMessage(tmpstring);
} else {
if(sysinfo.showstatus){
sprintf(tmpstring,"ISR: NBuffer %d PBuffer %d %7ld %7ld %7ld %7ld ",
adinfo.next_buf, adinfo.process_buf,
adinfo.timestamp[adinfo.next_buf],
adinfo.timestamp[adinfo.next_buf] -
adinfo.timestamp[adinfo.process_buf],
(unsigned long)(adinfo.computed_timestamp/1e3),
(unsigned long)(adinfo.computed_timestamp/1e3) -
adinfo.timestamp[adinfo.next_buf]);
StatusMessage(tmpstring);
}
}
#ifdef DT2821
if(sysinfo.debug){
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,"ISR: Buffer f%d F%d\n",
adinfo.process_buf,FilledBuffer);
}
#endif
abort_isr:
/* signal the end of the ISR to the controller */
outp(IRQMASTER,IRQEOI);
outp(IRQSLAVE,IRQEOI);
/* reenable interrupts */
enable();
//sprintf(tmpstring,"count=%ld proc=%d next=%d",
// adinfo.count,adinfo.process_buf,adinfo.next_buf);
//ErrorMessage(tmpstring);
}
char temp[100];
void ProcessBuffer(void)
{
/*
** Multiple buffer code
*/
register int i, j, k, l;
int e_num;
register int *dptr;
register int *spikedataptr;
register Spike *spikeptr;
register int *tptr; /* pointer to threshold buffer */
register char *subptr; /* pointer to subthreshold status array */
int *previousdptr;
register int *pdptr;
int *dataptr; /* pointer to the data in the buffer */
int nspikes;
int offset;
ElectrodeInfo *electrode;
int peak;
int previousbuf;
int start;
int bufoffset;
register int previouslength;
register int currentlength;
int spikefound;
long sum;
int totspikes=0;
DisableADIRQ;
dataptr = adinfo.dataptr[adinfo.process_buf];
previousbuf = prevbuf(adinfo.process_buf);
previousdptr = adinfo.dataptr[previousbuf];
offset = ADOFFSET;
if(sysinfo.debug){
fprintf(stderr,"testing buffer validity: buf %d=%d : buf %d=%d :",
adinfo.process_buf,
adinfo.buffer_valid[adinfo.process_buf],
(adinfo.process_buf),
adinfo.buffer_valid[prevbuf(adinfo.process_buf)]);
}
if(sysinfo.detect_spikes){
/*
** loop through once for each electrode in the buffer
*/
for(e_num = 0; e_num < adinfo.nelectrodes; e_num++) {
electrode = adinfo.electrode + e_num;
spikeptr = electrode->spikebuf;
spikedataptr = spikeptr->dataptr;
nspikes = 0;
start = 0;
/* the buffer start offset is 0 or 4 if there are two electrodes */
bufoffset = e_num * adinfo.nelect_chan;
dptr = dataptr + bufoffset;
pdptr = previousdptr + electrode->prevstart + bufoffset;
/*
** Check the last elements of the previous buffer
** for an above threshold event
*/
for(i = electrode->prevstart; i < adinfo.dma_bufsize; i+=
adinfo.nchannels) {
spikefound = 0;
tptr = electrode->thresh;
subptr = electrode->subthresh;
for(j = 0; j < adinfo.nelect_chan; j++) {
/*
** scan the buffer for threshold crossings
*/
if (*(pdptr)-offset > *(tptr)) {
if (*subptr) {
/* if it started out subthreshold */
spikefound = 1;
/*
** detected a threshold crossing.
*/
/* set the electrode number and the time */
spikeptr->type = 's';
spikeptr->type2 = 's';
spikeptr->electrode = e_num;
spikeptr->timestamp = compute_timestamp(previousbuf,
i);
/* move the data pointer back to the beginning of
the period to be saved */
pdptr -= (j + adinfo.prespike_points);
/*
** previouslength is the length of the section of
** the previous buffer to be saved
** currentlength is the length of the section of the
** current buffer to be saved
*/
previouslength = adinfo.dma_bufsize - i +
adinfo.prespike_points;
currentlength = adinfo.spikelen - previouslength;
for(k=0; k<previouslength; k+=adinfo.nchannels) {
/*
** copy each word from the previous data buffer
** to the appropriate electrode data buffer.
** Note that the data pointer will be
** pointing to the data just past the spike
** when the memory copy is completed
*/
memcpy(spikedataptr, pdptr, adinfo.nelect_size);
pdptr += adinfo.nchannels;
spikedataptr += adinfo.nelect_chan;
}
for(k=0; k < currentlength; k+= adinfo.nchannels) {
/*
** copy each word from the current data buffer
** to the appropriate electrode data buffer.
*/
memcpy(spikedataptr, dptr, adinfo.nelect_size);
dptr += adinfo.nchannels;
spikedataptr += adinfo.nelect_chan;
}
nspikes++;
/* there can only be one spike in this buffer */
i = adinfo.dma_bufsize;
/*
** the next threshold crossing event will start in
** the current data buffer. Increment start so
** that detection will begin after the current spike
*/
start = currentlength;
/*
** move to the next spike
*/
spikeptr++;
spikedataptr = spikeptr->dataptr;
/*
** hop to the next event. no need to look at the
** other channels on the same electrode
*/
/* set all of subthreshold varibles to indicate
suprathreshold status */
subptr = electrode->subthresh;
for (l = 0; l < adinfo.nelect_chan; l++) {
*subptr = 0;
subptr++;
}
break;
}
}
else {
// the input is currently subthreshold
*subptr = 1;
}
pdptr++;
tptr++;
subptr++;
}
if (!spikefound)
pdptr += adinfo.elect_inc;
}
/*
** if the start point for the next spike is close to the
** beginning of the current buffer, scan the first points of
** the current buffer for a threshold crossing
*/
for(i = start; i < adinfo.prespike_points; i +=
adinfo.nchannels) {
spikefound = 0;
tptr = electrode->thresh;
subptr = electrode->subthresh;
for(j = 0; j < adinfo.nelect_chan; j++) {
/*
** scan the buffer for threshold crossings
*/
if(*(dptr)-offset > *(tptr)) {
if (*subptr) {
/*
** detected a threshold crossing.
*/
spikefound = 1;
/* set the electrode number and the time */
spikeptr->type = 's';
spikeptr->type2 = 's';
spikeptr->electrode = e_num;
spikeptr->timestamp = compute_timestamp(
adinfo.process_buf, i);
/* move the data pointer back to the beginning of
the buffer */
dptr = dataptr + bufoffset;
/*
** previouslength is the length of the section of
** the previous buffer to be saved
** currentlength is the length of the section of the
** current buffer to be saved
*/
previouslength = adinfo.prespike_points - i;
currentlength = adinfo.spikelen - previouslength;
/* move the previous data pointer to the right
place */
pdptr = previousdptr + adinfo.dma_bufsize -
previouslength;
for(k=0; k<previouslength; k += adinfo.nchannels) {
/*
** copy each word from the previous data buffer
** to the appropriate electrode data buffer.
*/
memcpy(spikedataptr, pdptr, adinfo.nelect_size);
pdptr += adinfo.nchannels;
spikedataptr += adinfo.nelect_chan;
}
for(k=0; k < currentlength; k += adinfo.nchannels) {
/*
** copy each word from the current data buffer
** to the appropriate electrode data buffer.
*/
memcpy(spikedataptr, dptr, adinfo.nelect_size);
dptr += adinfo.nchannels;
spikedataptr += adinfo.nelect_chan;
}
nspikes++;
i += currentlength;
/* spike detection should start immediately after
this spike */
start = i;
/* move past the spike */
spikeptr++;
spikedataptr = spikeptr->dataptr;
/* set all of subthreshold varibles to indicate
suprathreshold status */
subptr = electrode->subthresh;
for (l = 0; l < adinfo.nelect_chan; l++) {
*subptr = 0;
subptr++;
}
break;
}
}
else {
// the input is currently subthreshold
*subptr = 1;
}
dptr++;
tptr++;
subptr++;
}
if (!spikefound)
dptr += adinfo.elect_inc;
}
if (start == 0)
/* no spike was found in the first few points of the buffer,
so start after adinfo.prespike_points */
start = adinfo.prespike_points;
/* find the spikes up to the point of potential overlap with the
next buffer and copy them to spikeptr */
currentlength = adinfo.spikelen;
for(i = start; i < adinfo.buflen; i += adinfo.nchannels) {
spikefound = 0;
tptr = electrode->thresh;
subptr = electrode->subthresh;
for(j = 0; j < adinfo.nelect_chan; j++) {
/*
** scan the buffer for threshold crossings
*/
if(*(dptr)-offset > *(tptr)) {
if (*subptr) {
/*
** detected a threshold crossing.
*/
spikefound = 1;
if(nspikes >= MAXSPIKES){
ErrorMessage("WARNING: spike buffer overrun");
break;
}
/* set the electrode number and the time */
spikeptr->type = 's';
spikeptr->type2 = 's';
spikeptr->electrode = e_num;
spikeptr->timestamp = compute_timestamp(
adinfo.process_buf, i);
/* move the data pointer back to the beginning of
the period to be saved */
dptr -= (j + adinfo.prespike_points);
for(k = 0; k < currentlength; k+=adinfo.nchannels) {
/* copy each word from the data buffer to the
** appropriate electrode data buffer.
** Note that the data pointer will be
** pointing to the data just past the spike
** when the memory copy is completed
*/
memcpy(spikedataptr, dptr, adinfo.nelect_size);
dptr += adinfo.nchannels;
spikedataptr += adinfo.nelect_chan;
}
/* move to the next spike */
spikeptr++;
spikedataptr = spikeptr->dataptr;
nspikes++;
/* adinfo.nchannels will be added to i at the top
** of the for loop, so subtract one extra
** adinfo.nchannels
*/
i += adinfo.spikesep - adinfo.nchannels;
/* set all of subthreshold varibles to indicate
suprathreshold status */
subptr = electrode->subthresh;
for (l = 0; l < adinfo.nelect_chan; l++) {
*subptr = 0;
subptr++;
}
/*
** hop to the next event. no need to look at the
** other channels on the same electrode
*/
break;
}
}
else {
// the input is currently subthreshold
*subptr = 1;
}
dptr++;
tptr++;
subptr++;
}
if (!spikefound)
dptr += adinfo.elect_inc;
}
if(sysinfo.debug){
gprintf(&sysinfo.debugwinx, &sysinfo.debugwiny,
"Buf %d : E %d : Spk %ld ", adinfo.filled_buffer,
j, electrode->nspikes);
}
/* processing might have found a spike that overlaps the section
of the previous buffer that will be processed next time around.
Set the start point for the next processing run to be the point
at which processing ended for this run */
electrode->prevstart = i;
electrode->nspikes = nspikes;
totspikes += nspikes;
}
if(totspikes > adinfo.peak_rate) adinfo.peak_rate = totspikes;
}
EnableADIRQ;
}
void CheckBoardID(void)
{
int id;
#ifdef DT31EZ
id = inpw(IDR);
switch(id){
case DT31EZ_ID:
fprintf(stderr,"DT31EZ identified\n");
sysinfo.adboard_id = DT31EZ_ID;
break;
default:
fprintf(stderr,"unknown board. Assuming DT2821. id = %d\n",id);
sysinfo.adboard_id = DT2821_ID;
break;
}
#else
sysinfo.adboard_id = DT2821_ID;
#endif
}
void WaitForKey(void)
{
fprintf(stderr,"press any key to continue");
getch();
}
/*
************************************************************************
**
** Main program
**
************************************************************************
*/
void main(int argc, char **argv)
{
int nxtarg;
short i, j;
int q;
int limit = 100;
int noacq = 0;
int tmpval;
ElectrodeInfo *electrode;
int errcount;
int nsamples;
unsigned long clock;
#ifdef DT2821
/* initialize the board */
outpw(SUPCSR,BIT0);
#endif
sysinfo.oldtime = 0;
sysinfo.pio2 = 0;
sysinfo.olddisktime = 0;
sysinfo.oldsynctime = 0;
sysinfo.stim.pulselen = 0;
sysinfo.command_mode = SINGLE;
got_command = 0;
sysinfo.command_mode2 = SINGLE;
got_command2 = 0;
adinfo.peak_rate = 0;
adinfo.rate_req = 250000.0; /* default sample rate */
adinfo.irq = 15; /* default interrupt request */
adinfo.dma_ch1 = 5;
adinfo.dma_ch2 = 6;
adinfo.nchannels = 8; /* default number of a/d channels */
adinfo.nelectrodes = 2;
/* make sure that the buffer is a multiple of the number of channels */
adinfo.error_count = 0; /* count of a/d errors during acq */
adinfo.display_lost = 0; /* number of buffers not displayed */
adinfo.disk_lost = 0; /* number of buffers not saved to disk */
adinfo.nspikes = 0; /* number of detected spike events */
// adinfo.overlap_window_size = (SPIKELEN - PRESPIKE) * adinfo.nelectrodes;
adinfo.count = 0;
adinfo.filled_buffer = 0;
adinfo.nelect_chan = NELECTRODE_CHANNELS;
for (i = 0; i < DMABUFFERS; i++)
adinfo.buffer_valid[i] = 0;
adinfo.nelect_size = adinfo.nelect_chan * sizeof(int);
adinfo.prespike_points = adinfo.nchannels * NPRESPIKE;
adinfo.next_buf = 1;
strcpy(adinfo.fname, NO_FILE_STRING);
/* set the filters to 300 low and 6KHz high and set the amp gain to 12 */
for (i = 0; i < NAMP_CHANNELS; i++) {
adinfo.channel[i].filter = 136;
adinfo.channel[i].ampgain = GetAmpGain(14);
}
for (i = 0; i < MAXFASTCONFIG; i++) {
sysinfo.configfilename[i] = (char *)calloc(MAXFILENAME,sizeof(char));
}
sysinfo.helpon = 0;
sysinfo.debug = 0;
sysinfo.debugwinx = 1;
sysinfo.debugwiny = 1;
sysinfo.disk = 0; /* flag to enable disk output */
sysinfo.graphics = 1; /* flag to enable graphics display */
sysinfo.acq = 0; /* flag to enable acquisition */
sysinfo.stopped = 2; // indicates acq in full stopped state
sysinfo.kbhandled = 1;
sysinfo.drawmode = 0;
sysinfo.quit = 0;
sysinfo.detect_spikes = 1;
sysinfo.autoscale = 0;
sysinfo.tracker_enabled = 0;