int main(int argc, char *argv[])
{
struct sigaction sa;
int ret;
sigset_t sigset;
int flags;
struct parsed_options options;
init_parsed_options(&options);
parse_options(&options, argc, argv);
device = comedi_open(options.filename);
if(!device){
perror(options.filename);
exit(1);
}
out_subd = 2;
config_output();
fcntl(comedi_fileno(device), F_SETOWN, getpid());
flags = fcntl(comedi_fileno(device),F_GETFL);
ret = fcntl(comedi_fileno(device),F_SETFL,flags|O_ASYNC);
//ret = fcntl(comedi_fileno(device),F_SETFL,O_NONBLOCK|O_ASYNC);
if(ret<0)perror("fcntl");
memset(&sa,0,sizeof(sa));
sa.sa_handler = &sigio_handler;
ret = sigaction(SIGIO,&sa,NULL);
if(ret<0)perror("sigaction");
sigemptyset(&sigset);
sigaddset(&sigset,SIGIO);
ret = sigprocmask(SIG_UNBLOCK,&sigset,NULL);
if(ret<0)perror("sigprocmask");
#if 0
{
struct sched_param p;
memset(&p,0,sizeof(p));
p.sched_priority = 1;
ret = sched_setscheduler(0,SCHED_FIFO,&p);
if(ret<0)perror("sched_setscheduler");
}
#endif
do_cmd_1(device, options.subdevice);
return 0;
}
void do_cmd(comedi_t *dev,comedi_cmd *cmd)
{
int total=0;
int ret;
int go;
ret=comedi_command_test(dev,cmd);
printf("test ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("comedi_command_test");
return;
}
dump_cmd(stdout,cmd);
ret=comedi_command_test(dev,cmd);
printf("test ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("comedi_command_test");
return;
}
dump_cmd(stdout,cmd);
ret=comedi_command(dev,cmd);
printf("ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("comedi_command");
return;
}
go=1;
while(go){
ret=read(comedi_fileno(dev),buf,BUFSZ);
if(ret<0){
if(errno==EAGAIN){
printf("EAGAIN\n");
usleep(10000);
}else{
go = 0;
perror("read");
}
}else if(ret==0){
go = 0;
}else{
//int i;
total+=ret;
//printf("read %d %d\n",ret,total);
//printf("count = %d\n",count);
//print_time();
}
}
}
int main(int argc, char *argv[])
{
comedi_cmd cmd;
int i;
struct parsed_options options;
init_parsed_options(&options);
parse_options(&options, argc, argv);
device = comedi_open(options.filename);
if(!device){
perror(options.filename);
exit(1);
}
fcntl(comedi_fileno(device), F_SETFL, O_NONBLOCK);
for(i = 0; i < n_chans; i++){
chanlist[i] = CR_PACK(options.channel + i, options.range, options.aref);
}
prepare_cmd(device, &cmd, options.subdevice);
do_cmd(device, &cmd);
return 0;
}
int bogio_read_frames(const bogio_spec *spec,
bogio_buf *buf,
unsigned int frames,
int blocking)
{
int bytes, i;
sampl_t *raw; /* Place to store raw samples before normalisation */
unsigned int framesize = buf->spf * sizeof(sampl_t);
/* Don't read past the end of the buffer */
if (frames > buf->frames)
frames = buf->frames;
if (!blocking) {
/* If we're not going to block, find out how many samples can be read */
unsigned int frames_ready =
comedi_get_buffer_contents(spec->m_dev, spec->subdevice) /
framesize;
if (frames > frames_ready)
frames = frames_ready;
}
/* Reserve a temporary buffer of the I/O device's type */
raw = (sampl_t *)alloca(frames*framesize);
comedi_poll(spec->m_dev, spec->subdevice);
//printf("Going to read %u bytes from fd %d, %d available... ", frames*framesize, comedi_fileno(spec->m_dev), comedi_get_buffer_contents(spec->m_dev, spec->subdevice)); fflush(stdout);
/* Fill it with data */
bytes = read(comedi_fileno(spec->m_dev), raw, frames*framesize);
//perror("read");
//printf("Got %d\n", bytes);
/* Ensure the read completed */
if (bytes <= 0)
return bytes;
frames = bytes/framesize;
/* Convert to bogio's native type and normalise. */
for (i = 0; i < frames * buf->spf ; i++)
buf->samples[i] = (bogio_sample_t)comedi_to_phys(raw[i],
spec->fsd[i],
spec->m_max_sample[i]);
return frames;
}
int laytube_toFile(tubeID *pTube){
int file_flags[2];
/* Check COMEDI file descriptor */
pTube->mouth = comedi_fileno(pTube->dev);
file_flags[0] = fcntl(pTube->mouth, F_GETFD);
// Is fd open? ...
if (file_flags[0] == EBADF){
return(-1);
}
// Check destition file descriptor
pTube->tail = pTube->dest;
file_flags[1] = fcntl(pTube->tail, F_GETFD);
// Is fd open? ...
if (file_flags[1] == EBADF){
return(-2);
}
/* Create new thread instance of data copying process */
pthread_create(&(pTube->threadNo), NULL, _laytube_toFile, (void *)pTube );
/* Block laytube_toFile from returning until new pTube is setup or failes */
while ( !(pTube->tubeStatus & TUBE_INPLACE) || (pTube->tubeStatus & TUBE_FAILED) ){
usleep(100); /* 1/10 sec */
}
if (pTube->tubeStatus & TUBE_FAILED){
return(-3);
}else{
return(0);
}
}
int main(int argc, char *argv[])
{
int ret;
comedi_cmd cmd;
struct parsed_options options;
init_parsed_options(&options);
parse_options(&options, argc, argv);
device = comedi_open(options.filename);
if(!device){
perror(options.filename);
exit(1);
}
out_subd = 0;
config_output();
ret = fcntl(comedi_fileno(device),F_SETFL,O_NONBLOCK|O_ASYNC);
if(ret<0)perror("fcntl");
#if 0
{
struct sched_param p;
memset(&p,0,sizeof(p));
p.sched_priority = 1;
ret = sched_setscheduler(0,SCHED_FIFO,&p);
if(ret<0)perror("sched_setscheduler");
}
#endif
prepare_cmd(device, &cmd, options.subdevice);
do_cmd(device,&cmd);
return 0;
}
/**
* Start the the ADC sampling, unless the external trigger command
* is set it will begin sampling as soon as the usbdux device has been
* initialized.
* The final three arguments are very important to get right
* as the recorder thread will use them to determine where to write it's samples and
* when it's reached end of the buffer. It doesn't care about the c_buffer class
* at all.
* @param arg_device name of the comedi device e.g., 'comedi0'
* @param arg_sample_rate the rate the usb_dux should sample with in hertz (max=3[Mhz]})
* @param arg_start_address the start address of the circle buffer sample should be loading into
* @param arg_end_address the end address of the cicle buffer.
* @param arg_buffer_size byte size of the buffer.
*/
int start_Sampling(char* arg_device, uint32_t arg_sample_rate,
char* arg_start_address, char* arg_end_address, int arg_buffer_size){
_channel_amount = 16;
_sample_rate = arg_sample_rate;
unsigned int chanlist[_channel_amount];
unsigned int convert_arg = 1e9 / _sample_rate;
int ret;
comedi_cmd *cmd = (comedi_cmd *) calloc(1, sizeof(comedi_cmd));
_device = comedi_open(arg_device);
int buffer = 1048576*40;
buffer = (buffer * 4096)/4096;
if(comedi_set_max_buffer_size(_device, 0, buffer) < 0 ){
printf("Failed to set max buffer size to %i bytes\n", buffer);
return -1;
} else printf("Maximum buffer size set to %i bytes\n", comedi_get_max_buffer_size(_device,0));
if(comedi_set_buffer_size(_device, 0, buffer) < 0){
printf("Failed to set buffer size to %iBytes\n", buffer);
return -1;
} else printf("Buffer size set to %iBytes\n", comedi_get_buffer_size(_device,0));
if(!_device){
errx(1, "unable to open device");
comedi_perror("/dev/comedi0");
return -1;
}
for(int i = 0; i < _channel_amount; i++)
chanlist[i] = i;
comedi_set_global_oor_behavior(COMEDI_OOR_NUMBER);
if((ret = comedi_get_cmd_generic_timed(_device, 0, cmd, _channel_amount,0)) < 0){
printf("comedi_get_cmd_generic_timed failed\n");
return ret;
}
cmd->chanlist = chanlist;
cmd->stop_src = TRIG_NONE;
cmd->stop_arg = 0;
cmd->convert_arg = convert_arg;
//setup the sampling to start from the trigger.
//cmd->start_src = TRIG_EXT
//cmd->start_arg = 1;
/* call test twice because different things are tested?
* if tests are successful run sampling command */
if((ret = comedi_command_test(_device, cmd)) != 0
|| (ret = comedi_command_test(_device, cmd)) != 0
|| (ret = comedi_command(_device, cmd)) < 0){
fprintf(stderr, "err: %d\n", ret);
return -1;
}
FILE* dux_fp;
if((dux_fp = fdopen(comedi_fileno(_device), "r")) <= 0)
comedi_perror("fdopen");
char* write_address = arg_start_address;
Utility::SNAP_SAMPLE = 0;
Utility::LAST_SAMPLE = 0;
uint64_t active_sample = 0;
uint32_t tmp_block = 0;
int samples_pr_block = 4096/sizeof(Type);
while((ret = fread(write_address, 1, 4096,dux_fp)) >= 0){
write_address += 4096;
tmp_block += 1;
active_sample += samples_pr_block;
Utility::LAST_SAMPLE += samples_pr_block;
if(tmp_block >= Utility::SNAPSHOT_BLOCK_SIZE){
//printf("signalling serial snapshotter\n");
tmp_block = 0;
Utility::SNAP_SAMPLE = active_sample;
Utility::SNAP_READY = true;
Utility::CV.notify_one();
}
if(write_address == arg_end_address){
write_address -= arg_buffer_size;
//printf("resetting to beginning of buffer\n");
}
if(_stop == true)
break;
}
if(ret < 0)
perror("read");
comedi_cancel(_device, 0);
return 0;
}
void ComediScope::paintEvent( QPaintEvent * ) {
int ret;
while (1) {
// we need data in all the comedi devices
for(int n=0;n<nComediDevices;n++) {
if (!comedi_get_buffer_contents(dev[n],subdevice))
return;
}
for(int n=0;n<nComediDevices;n++) {
int subdev_flags = comedi_get_subdevice_flags(dev[n],
subdevice);
int bytes_per_sample;
if(subdev_flags & SDF_LSAMPL) {
bytes_per_sample = sizeof(lsampl_t);
} else {
bytes_per_sample = sizeof(sampl_t);
}
unsigned char buffer[bytes_per_sample*channels_in_use];
ret = read(comedi_fileno(dev[n]),
buffer,
bytes_per_sample*channels_in_use);
if (ret==0) {
printf("BUG! No data in buffer.\n");
exit(1);
}
if (ret<0) {
printf("\n\nError %d during read! Exiting.\n\n",ret);
exit(1);
}
for(int i=0;i<channels_in_use;i++) {
int sample;
if (comediRecord->channel[n][i]->isActive()) {
int ch = comediRecord->channel[n][i]->getChannel();
if(subdev_flags & SDF_LSAMPL) {
sample = ((int)((lsampl_t *)buffer)[ch]);
} else {
sample = ((int)((sampl_t *)buffer)[ch]);
}
// store raw data
daqData[n][i] = sample;
// convert data to physical units for plotting
float value = comedi_to_phys(sample,
crange[n],
maxdata[n]);
// filtering
value = comediRecord->dcSub[n][i]->filter(value);
value = comediRecord->hp[n][i]->filter(value);
value = comediRecord->lp[n][i]->filter(value);
// remove 50Hz
if (comediRecord->filterCheckbox->checkState()==Qt::Checked) {
value=iirnotch[n][i]->filter(value);
}
if ((n==fftdevno) && (ch==fftch) &&
(comediRecord->fftscope))
comediRecord->fftscope->append(value);
// average response if TB is slower than sampling rate
adAvgBuffer[n][i] = adAvgBuffer[n][i] + value;
}
}
}
// save data
if (comediRecord->recPushButton->checkState()==Qt::Checked) {
writeFile();
}
nsamples++;
tb_counter--;
// enough averaged?
if (tb_counter<=0) {
for(int n=0;n<nComediDevices;n++) {
for(int i=0;i<channels_in_use;i++) {
adAvgBuffer[n][i]=adAvgBuffer[n][i]/tb_init;
}
}
// plot the stuff
paintData(adAvgBuffer);
// clear buffer
tb_counter=tb_init;
for(int n=0;n<nComediDevices;n++) {
for(int i=0;i<channels_in_use;i++) {
adAvgBuffer[n][i]=0;
}
}
}
}
}
int test_mmap(void)
{
comedi_cmd cmd;
unsigned char *buf;
unsigned int chanlist[1];
int go;
int fails;
int total=0;
int ret;
void *b;
unsigned char *adr;
unsigned char *map;
unsigned int flags;
int i;
unsigned sample_size;
unsigned map_len;
flags = comedi_get_subdevice_flags(device,subdevice);
/* attempt to make subdevice the current 'read' subdevice */
if(flags&SDF_CMD_READ) comedi_set_read_subdevice(device,subdevice);
if(!(flags&SDF_CMD) || (comedi_get_read_subdevice(device)!=subdevice)){
printf("not applicable\n");
return 0;
}
if(flags & SDF_LSAMPL) sample_size = sizeof(lsampl_t);
else sample_size = sizeof(sampl_t);
map_len = sample_size * N_SAMPLES;
if(comedi_get_cmd_generic_timed(device, subdevice, &cmd, 1, 1)<0){
printf("E: comedi_get_cmd_generic_timed failed\n");
return 0;
}
buf=malloc(sample_size * N_SAMPLES);
map = mmap(NULL, map_len,PROT_READ, MAP_SHARED, comedi_fileno(device),0);
if(!map){
printf("E: mmap() failed\n");
return 0;
}
/* test readability */
for(adr = map; adr < map + map_len; adr += PAGE_SIZE){
ret=test_segfault(adr);
if(ret){
printf("E: %p failed\n",adr);
}else{
printf("%p ok\n",adr);
}
}
if(realtime)cmd.flags |= TRIG_RT;
cmd.chanlist = chanlist;
cmd.scan_end_arg = 1;
cmd.stop_arg = N_SAMPLES;
cmd.chanlist_len = 1;
chanlist[0] = CR_PACK(0,0,0);
comedi_command(device,&cmd);
go=1;
b=buf;
while(go){
ret = read(comedi_fileno(device), b,
(N_SAMPLES * sample_size) - total);
if(ret<0){
if(errno==EAGAIN){
usleep(10000);
}else{
go = 0;
perror("read");
}
}else if(ret==0){
go = 0;
}else{
total += ret;
b += ret;
if(verbose) printf("read %d %d\n",ret,total);
if(total >= (N_SAMPLES * sample_size)){
go = 0;
}
}
}
fails = 0;
for(i=0;i<total;i++){
if(buf[i]!=map[i]){
if(fails==0)printf("E: mmap compare failed\n");
printf("offset %d (read=%02x mmap=%02x)\n",i,
buf[i], map[i]);
fails++;
if(fails>10)break;
}
}
if(fails==0) printf("compare ok\n");
munmap(map, map_len);
/* test if area is really unmapped */
for(adr = map; adr < map + map_len; adr += PAGE_SIZE){
ret=test_segfault(adr);
if(ret){
printf("%p segfaulted (ok)\n",adr);
}else{
printf("E: %p still mapped\n",adr);
}
}
free(buf);
return 0;
}
static int openBoard( int board ) {
MY_BOARD_HARDWARE *pBoardHard = myHardwareBoardList + board;
MY_BOARD_SOFTWARE *pBoardSoft = mySoftwareBoardList + board;
fprintf( stderr, "openBoard[%d]\n", board );
fprintf( stderr, "sizeof(lsampl_t)=%d\n", sizeof(lsampl_t) );
fprintf( stderr, "sizeof(sampl_t)=%d\n", sizeof(sampl_t) );
if (pBoardHard == NULL || pBoardSoft == NULL) return 1;
pBoardHard->p_comediFileHandle = comedi_open( pBoardHard->devicePath );
if (pBoardHard->p_comediFileHandle == NULL) {
fprintf( stderr, "comedi_open failed for board[%d] %s\n", board, pBoardHard->devicePath );
return 1;
}
fprintf( stderr, "opened file\n" );
pBoardHard->subDeviceNumber =
comedi_find_subdevice_by_type(
pBoardHard->p_comediFileHandle,
COMEDI_SUBD_AI,
0
);
if (pBoardHard->subDeviceNumber < 0) {
fprintf( stderr, "subDeviceNum < 0 failed for board[%d]\n", board );
return 1;
}
fprintf( stderr, "get subDevice=%d\n", pBoardHard->subDeviceNumber );
int subDevFlags = comedi_get_subdevice_flags(
pBoardHard->p_comediFileHandle,
pBoardHard->subDeviceNumber
);
if (subDevFlags & SDF_PACKED) {
fprintf( stderr, "subDevice using bit per channel\n" );
} else {
if (subDevFlags & SDF_LSAMPL) {
pBoardHard->valueIsLsampl_t = 1;
fprintf( stderr, "subDevice using long word lsampl_t per channel\n" );
} else {
fprintf( stderr, "subDevice using word sampl_t per channel\n" );
}
}
pBoardHard->buffer_size_in_byte =
comedi_get_buffer_size(
pBoardHard->p_comediFileHandle,
pBoardHard->subDeviceNumber
);
fprintf( stderr, "board[%d] hardware buffer size in BYTES=%d\n",
board, pBoardHard->buffer_size_in_byte );
if (pBoardHard->buffer_size_in_byte <= 0) {
fprintf( stderr, "board buffer size faile\n" );
return 1;
}
if (pBoardHard->valueIsLsampl_t) {
pBoardHard->buffer_size_in_sample = pBoardHard->buffer_size_in_byte / sizeof(lsampl_t);
} else {
pBoardHard->buffer_size_in_sample = pBoardHard->buffer_size_in_byte / sizeof(sampl_t);
}
pBoardHard->buffer = mmap(
NULL,
pBoardHard->buffer_size_in_byte,
PROT_READ,
MAP_SHARED,
comedi_fileno(pBoardHard->p_comediFileHandle),
0
);
if (pBoardHard->buffer == MAP_FAILED) {
fprintf( stderr, "mmap failed for board[%d]\n", board );
return 1;
}
int numChannel = comedi_get_n_channels(
pBoardHard->p_comediFileHandle,
pBoardHard->subDeviceNumber
);
if (numChannel != pBoardSoft->numberOfActiveAnalogInputs) {
fprintf( stderr, "number of channel for board[%d] from comedi=%d harccode=%d\n",
board, numChannel, pBoardSoft->numberOfActiveAnalogInputs );
}
#ifdef SUPPORT_CHANNEL_SPECIFIC_RANGE
pBoardHard->maxDataIsChannelSpecific =
comedi_maxdata_is_chan_specific(
pBoardHard->p_comediFileHandle,
pBoardHard->subDeviceNumber
);
pBoardHard->rangeIsChannelSpecific =
comedi_maxdata_is_chan_specific(
pBoardHard->p_comediFileHandle,
pBoardHard->subDeviceNumber
);
if (pBoardHard->maxDataIsChannelSpecific) {
fprintf( stderr, "board[%d] supports different max data per channel\n", board );
}
if (pBoardHard->rangeIsChannelSpecific) {
fprintf( stderr, "board[%d] supports different range per channel\n", board );
}
#endif
return 0;
}
int main(int argc, char *argv[])
{
comedi_cmd c,*cmd=&c;
struct header_info header;
long int t_samples, t_bytes, t_sleep;
long int ret;
int dt_usec, usec_elapsed;
// struct timeval start,end;
struct parsed_options options;
unsigned short *samples; //, *junk;
struct timeval now,then;
long long unsigned int exec = 0;
time_t t;
umask(000);
signal(SIGINT,do_depart);
if (geteuid() != 0) {
fprintf(stderr,"Must be setuid root to renice self.\n");
exit(0);
}
cmd_init_parsed_options(&options);
cmd_parse_options(&options, argc, argv);
t_samples = options.n_chan * options.samples;
t_bytes = t_samples * 2;
t_sleep = (long int) DMA_OVERSCAN_MULT*(1e6/options.freq)*options.samples;
printf("freq = %f, tsamp = %li, tby = %li, tsleep = %li.\n",options.freq,t_samples,t_bytes,t_sleep);
/* Test for failful options */
if (options.freq <= 1/(options.cadence + 0.00005)) {
fprintf(stderr,"Acquisition frequency is faster than sampling frequency! FAIL!\n");
exit(ACQERR_BADINPUT);
}
if (options.samples > 16777216) {
fprintf(stderr,"acq_d can't take more than 2^24 samples per set! Try acq_c.\n");
exit(ACQERR_BADINPUT);
}
ret = nice(-20);
fprintf(stderr,"I've been niced to %li.\n",ret);
if (ret != -20) printf(" WARNING!! Data collection could not set nice=-20. Data loss is probable at high speed.");
dt_usec = options.cadence * 1e6;
gettimeofday(&then, NULL);
/* open the device */
dev = comedi_open(options.devfile);
if (!dev) {
comedi_perror(options.devfile);
exit(ACQERR_BADDEV);
}
// printf("%li samples in %i-byte buffer.\n\n",t_samples,comedi_get_buffer_size(dev,options.subdevice));
prepare_cmd_lib(dev,options,cmd);
printf("Testing command...");
ret = comedi_command_test(dev, cmd);
if (ret < 0) {
comedi_perror("comedi_command_test");
if(errno == EIO){
fprintf(stderr,"Ummm... this subdevice doesn't support commands\n");
}
exit(ACQERR_BADCMD);
}
printf("%s...",cmdtest_messages[ret]);
ret = comedi_command_test(dev, cmd);
printf("%s...",cmdtest_messages[ret]);
ret = comedi_command_test(dev, cmd);
printf("%s...\n",cmdtest_messages[ret]);
if (ret < 0) {
fprintf(stderr,"Bad command, and unable to fix.\n");
dump_cmd(stderr, cmd);
exit(ACQERR_BADCMD);
}
dump_cmd(stdout,cmd);
comedi_close(dev);
//fprintf(stderr,"%i scan -- %i chan -- %li samples -- %li bytes\n",options.samples,options.n_chan,t_samples,t_bytes);
/* Print data file header */
// sprintf(dataheader, "[system]\n"
// "whoami = \"%s\"")
samples = (unsigned short*) malloc(t_bytes);
// junk = (unsigned short*) malloc(t_bytes);
if ((samples == NULL)) { // | (junk == NULL)) {
fprintf(stderr,"Error allocating sample memory!\n");
exit(ACQERR_BADMEM);
}
printf("Starting acquisition...\n");
/*Open the serial port*/
/*serial = (FILE*)fopen("/dev/ttyS0","w");*/
/* Do what we're here to do */
while (running) {
if (exec == options.sets) {
break;
}
exec++;
serial_toggle();
/* open the device */
dev = comedi_open(options.devfile);
if (!dev) {
comedi_perror(options.devfile);
exit(ACQERR_BADDEV);
}
gettimeofday(&now, NULL);
usec_elapsed = (now.tv_sec - then.tv_sec) * 1e6 + (now.tv_usec - then.tv_usec);
while (usec_elapsed < dt_usec) {
usleep(USLEEP_GRAN);
gettimeofday(&now, NULL);
usec_elapsed = (now.tv_sec - then.tv_sec) * 1e6 + (now.tv_usec - then.tv_usec);
}
/* start the command */
ret = comedi_command(dev, cmd);
if (ret < 0) {
comedi_perror("comedi_command");
exit(ACQERR_BADCMD);
}
then = now;
/*
* Insert enough waiting to get through most of the sampling
*/
/*serial_toggle();*/
usleep(t_sleep);
/*
* Wait until the buffer has our data.
*/
int exsleeps = 0;
do {
usleep(USLEEP_GRAN);
comedi_poll(dev,options.subdevice);
ret = comedi_get_buffer_contents(dev,options.subdevice);
exsleeps++;
} while(ret < t_bytes);
// printf("Waited %ius for additional data.\n",exsleeps);
/*
* Get teh dataz.
*/
ret = read(comedi_fileno(dev), samples, t_bytes);
if (ret < t_bytes) {
fprintf(stderr,"Read mismatch! Got %li of %li bytes (%li/%li samples).\n",ret,t_bytes,ret/2,t_samples);
}
header.num_read = ret/2;
// collect & discard overscan
/* ret = comedi_get_buffer_contents(dev,options.subdevice);
if (realloc(junk,ret) == NULL) {
fprintf(stderr,"Error in oversample realloc?\n");
exit(ACQERR_BADMEM);
}
if (ret > 0) {
ret = read(comedi_fileno(dev),junk,ret);
}*/
comedi_close(dev);
// Prepare header
t = time(NULL);
sprintf(header.site_id,"%s",site_str);
header.start_time = t;
header.start_timeval = now;
header.num_channels=options.n_chan;
header.channel_flags=0x0F;
header.num_samples=options.samples;
header.sample_frequency=options.freq;
header.time_between_acquisitions=options.cadence;
header.byte_packing=0;
header.code_version=current_code_version;
// Save latest to monitor file
if (strcmp(options.monfile,"") != 0) {
out = open(options.monfile,O_WRONLY|O_CREAT|O_TRUNC,S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
ret = errno;
if (out > 0) {
ret = write(out,&header,sizeof(header));
ret = write(out,samples,2*header.num_read);
close(out);
}
else {
fprintf(stderr,"Unable to open monitor file %s: %s.\n",options.monfile,strerror(ret));
exit(ACQERR_BADOUT);
}
}
if (options.cadence >= 1.0 && options.verbose) printf("\tSaved latest to: %s\n",options.monfile);
// Append to output file
if (strcmp(options.outfile,"") != 0) {
out = open(options.outfile,O_WRONLY|O_APPEND|O_CREAT,S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
ret = errno;
if (out > 0) {
ret = write(out,samples,2*header.num_read);
close(out);
if (options.cadence >= 1.0 && options.verbose) printf("\tAppended to: %s\n",options.outfile);
}
else {
fprintf(stderr,"Unable to open output file %s: %s.\n",options.outfile,strerror(ret));
exit(ACQERR_BADOUT);
}
}
}
if (dev != NULL)
comedi_close(dev);
if (out != 0)
close(out);
printf("\nEnd.\n");
exit(0);
}
static PyObject*
comediModule(PyObject* self, PyObject* args)
{
char *device;
int subdevice;
int channel;
int range;
int aref;
int n_chan;
int n_scan;
float freq;
if (!PyArg_ParseTuple(args, "siiiiiif", &device, &subdevice, &channel, &range, &aref, &n_chan, &n_scan, &freq))
return NULL;
comedi_t *dev;
comedi_cmd c,*cmd=&c;
int ret;
int total=0;
int i;
struct timeval start,end;
int subdev_flags;
lsampl_t raw;
struct parsed_options options;
init_parsed_options(&options);
options.filename = device;
options.subdevice = subdevice;
options.channel = channel;
options.range = range;
options.aref = aref;
options.n_chan = n_chan;
options.n_scan = n_scan;
options.freq = freq;
/* open the device */
dev = comedi_open(options.filename);
if(!dev){
comedi_perror(options.filename);
exit(1);
}
// Print numbers for clipped inputs
comedi_set_global_oor_behavior(COMEDI_OOR_NUMBER);
/* Set up channel list */
for(i = 0; i < options.n_chan; i++){
chanlist[i] = CR_PACK(options.channel + i, options.range, options.aref);
range_info[i] = comedi_get_range(dev, options.subdevice, options.channel, options.range);
maxdata[i] = comedi_get_maxdata(dev, options.subdevice, options.channel);
}
prepare_cmd_lib(dev, options.subdevice, options.n_scan, options.n_chan, 1e9 / options.freq, cmd);
fprintf(stderr, "command before testing:\n");
dump_cmd(stderr, cmd);
ret = comedi_command_test(dev, cmd);
if(ret < 0){
comedi_perror("comedi_command_test");
if(errno == EIO){
fprintf(stderr,"Ummm... this subdevice doesn't support commands\n");
}
exit(1);
}
fprintf(stderr,"first test returned %d (%s)\n", ret,
cmdtest_messages[ret]);
dump_cmd(stderr, cmd);
ret = comedi_command_test(dev, cmd);
if(ret < 0){
comedi_perror("comedi_command_test");
exit(1);
}
fprintf(stderr,"second test returned %d (%s)\n", ret,
cmdtest_messages[ret]);
if(ret!=0){
dump_cmd(stderr, cmd);
fprintf(stderr, "Error preparing command\n");
exit(1);
}
/* this is only for informational purposes */
gettimeofday(&start, NULL);
fprintf(stderr,"start time: %ld.%06ld\n", start.tv_sec, start.tv_usec);
/* start the command */
ret = comedi_command(dev, cmd);
if(ret < 0){
comedi_perror("comedi_command");
exit(1);
}
subdev_flags = comedi_get_subdevice_flags(dev, options.subdevice);
const int ndim = 2;
npy_intp nd[2] = {n_scan, n_chan};
PyObject *myarray;
double *array_buffer;
myarray = PyArray_SimpleNew(ndim, nd, NPY_DOUBLE);
Py_INCREF(myarray);
array_buffer = (double *)PyArray_DATA(myarray);
while(1){
ret = read(comedi_fileno(dev),buf,BUFSZ);
if(ret < 0){
/* some error occurred */
perror("read");
break;
}else if(ret == 0){
/* reached stop condition */
break;
}else{
static int col = 0;
double j = 0.0;
int bytes_per_sample;
total += ret;
if(options.verbose)fprintf(stderr, "read %d %d\n", ret, total);
if(subdev_flags & SDF_LSAMPL)
bytes_per_sample = sizeof(lsampl_t);
else
bytes_per_sample = sizeof(sampl_t);
for(i = 0; i < ret / bytes_per_sample; i++){
if(subdev_flags & SDF_LSAMPL) {
raw = ((lsampl_t *)buf)[i];
} else {
raw = ((sampl_t *)buf)[i];
}
*array_buffer++ = print_datum(raw, col, 1);
col++;
if(col == options.n_chan){
col=0;
j++;
printf("\n");
}
}
}
}
/* this is only for informational purposes */
gettimeofday(&end,NULL);
fprintf(stderr,"end time: %ld.%06ld\n", end.tv_sec, end.tv_usec);
end.tv_sec -= start.tv_sec;
if(end.tv_usec < start.tv_usec){
end.tv_sec--;
end.tv_usec += 1000000;
}
end.tv_usec -= start.tv_usec;
fprintf(stderr,"time: %ld.%06ld\n", end.tv_sec, end.tv_usec);
return myarray;
}
int PLLReferenceGeneration()
{
//Initial test function to try out Real time stuff.
int m, i=0, err, n;
lsampl_t data_to_card;
static comedi_t * dev;
static int OutputFIFOBufferSize;
static int PLLGenerationBufferSize;
unsigned int maxdata;
unsigned int chanlist[16];
int ret;
static lsampl_t data[PLLGenerationBufferNPoints]; //this is the buffer used to send data points out
comedi_cmd cmd;
dev = comedi_open(device_names[PLLReferenceGenerationChannel.board_number]);
//Check the size of the output buffer
OutputFIFOBufferSize = comedi_get_buffer_size(dev, PLLReferenceGenerationChannel.subdevice);
rt_printk("OutputFIFO Buffer size is %i\n", OutputFIFOBufferSize);
//Set the actual buffer size that we will be using to half this and the number of data points to one fourth
//Now configure the output channel using a Comedi instruction
//BufferSize is initially set to be double the number of PLLGenerationBufferNPoints
PLLGenerationBufferSize = 2*PLLGenerationBufferNPoints;
maxdata = comedi_get_maxdata(dev, PLLReferenceGenerationChannel.subdevice, PLLReferenceGenerationChannel.channel);
rt_printk("PLL Reference channel max data is %i\n", maxdata);
offset = maxdata / 2;
amplitude = maxdata - offset;
memset(&cmd,0,sizeof(cmd));
cmd.subdev = PLLReferenceGenerationChannel.subdevice;
cmd.flags = CMDF_WRITE;
cmd.start_src = TRIG_INT;
cmd.start_arg = 0;
cmd.scan_begin_src = TRIG_TIMER;
cmd.scan_begin_arg = PLLGenMinPulseTime; //minimum update time for the
cmd.convert_src = TRIG_NOW;
cmd.convert_arg = 0;
cmd.scan_end_src = TRIG_COUNT;
cmd.scan_end_arg = NCHAN; //only one channel
cmd.stop_src = TRIG_NONE;
cmd.stop_arg = 0;
cmd.chanlist = chanlist;
cmd.chanlist_len = NCHAN;
chanlist[0] = CR_PACK(PLLReferenceGenerationChannel.channel, AO_RANGE, AREF_GROUND);
dds_init(PLLWaveformFrequency, PLLUpdateFrequency);
err = comedi_command_test(dev, &cmd);
if (err < 0) {
comedi_perror("comedi_command_test");
exit(1);
}
err = comedi_command_test(dev, &cmd);
if (err < 0) {
comedi_perror("comedi_command_test");
exit(1);
}
if ((err = comedi_command(dev, &cmd)) < 0) {
comedi_perror("comedi_command");
exit(1);
}
dds_output(data,PLLGenerationBufferNPoints);
n = PLLGenerationBufferNPoints * sizeof(sampl_t);
m = write(comedi_fileno(dev), (void *)data, n);
if(m < 0){
perror("write");
exit(1);
}else if(m < n)
{
fprintf(stderr, "failed to preload output buffer with %i bytes, is it too small?\n"
"See the --write-buffer option of comedi_config\n", n);
exit(1);
}
if(!(PLLRefGen_Task = rt_task_init_schmod(nam2num( "PLLReferenceGeneration" ), // Name
2, // Priority
0, // Stack Size
0, //, // max_msg_size
SCHED_FIFO, // Policy
CPUMAP ))) // cpus_allowed
{
printf("ERROR: Cannot initialize pll reference generation task\n");
exit(1);
}
//specify that this is to run on one CPU
rt_set_runnable_on_cpuid(PLLRefGen_Task, 1);
//Convert samp_time, which is in nanoseconds, to tick time
//sampling_interval = nano2count(SAMP_TIME); //Converts a value from
//nanoseconds to internal count units.
mlockall(MCL_CURRENT|MCL_FUTURE);
rt_make_hard_real_time();
PLLUpdateTime = nano2count(PLLGenerationLoopTime);
rt_printk("PLL generation update time is %f12 \n",count2nano((float) PLLUpdateTime));
// Let's make this task periodic..
expected = rt_get_time() + 100*PLLUpdateTime;
rt_task_make_periodic(PLLRefGen_Task, expected, PLLUpdateTime); //period in counts
//rt_task_resume(Sinewaveloop_Task);
PLLGenerationOn = TRUE;
// Concurrent function Loop
//rt_printk("SineWaveAmplitude is is %f \n",SineWaveAmplitude);
//rt_printk("SineWaveFrequency is %f \n",SineWaveFrequency);
//rt_printk("sine_loop_running is %d \n",sine_loop_running);
//rt_printk("SAMP_TIME is %d \n",SAMP_TIME);
start_time = (float)rt_get_time_ns()/1E9; //in seconds
old_time = start_time;
rt_printk("PLLReferenceGenerationChannel board_it is %p \n",PLLReferenceGenerationChannel.board_id);
rt_printk("PLLReferenceGenerationChannel devicename is %p \n",*(PLLReferenceGenerationChannel.devicename));
rt_printk("PLLReferenceGenerationChannel boardname is %p \n",*(PLLReferenceGenerationChannel.boardname));
rt_printk("PLLReferenceGenerationChannel subdevice is %d \n",PLLReferenceGenerationChannel.subdevice);
rt_printk("PLLReferenceGenerationChannel channel is %d \n",PLLReferenceGenerationChannel.channel);
OutputValue = 1;
PLLGenerationBufferSize = comedi_get_buffer_size(dev, PLLReferenceGenerationChannel.subdevice);
//sine_loop_running = 0; //set this to 0 for testing
while(PLLGenerationOn)
{
i++; // Count Loops.
current_time = (float)rt_get_time_ns()/1E9;
//rt_printk("LOOP %d,-- Period time: %f12 %f12\n",i, current_time - old_time,count2nano((float)sampling_interval)/1E9);
OutputValue = SineWaveAmplitude*sin(2*PI*SineWaveFrequency*(current_time-start_time));
//OutputValue = -1*OutputValue;
//rt_printk("OutputValue is %f12 \n",OutputValue);
data_to_card = (lsampl_t) nearbyint(((OutputValue - MinOutputVoltage)/OutputRange)*MaxOutputBits);
//m=rt_comedi_command_data_write(AnalogOutputChannel.board_id, AnalogOutputChannel.subdevice, NCHAN, data_to_card);
comedi_lock(dev, AnalogOutputChannel.subdevice);
m=comedi_data_write(dev, AnalogOutputChannel.subdevice, AnalogOutputChannel.channel, AO_RANGE, AREF_DIFF, data_to_card);
comedi_unlock(dev, AnalogOutputChannel.subdevice);
// m=comedi_data_write(AnalogOutputChannel.board_id, AnalogOutputChannel.subdevice,
// AnalogOutputChannel.channel, AO_RANGE, AREF_GROUND, data_to_card);
//rt_printk("Data_to_card is %d; result from rt_comedi_command_data_write is %d \n",data_to_card, m);
//rt_printk("LOOP %d,-- AO Out time: %f12 \n",i, (float)rt_get_time_ns()/1E9 - current_time);
//rt_printk("Data_to_card is %d \n",data_to_card);
//old_time = current_time;
/* if (i== 100000)
{
sine_loop_running = 0;
//printf("LOOP -- run: %d %d\n ",keep_on_running,&keep_on_running);
//printf("RTAI LOOP -- run: %d \n ",i);
break;
}
*/
rt_task_wait_period(); // And waits until the end of the period.
}
rt_make_soft_real_time();
comedi_close(dev);
rt_task_delete(Sinewaveloop_Task); //Self termination at end.
pthread_exit(NULL);
return 0;
}
int main(int argc, char *argv[])
{
comedi_cmd cmd;
int err;
int n, m, k;
comedi_t *dev;
unsigned int chanlist[100];
unsigned int maxdata;
comedi_range *rng;
int ret;
struct parsed_options options;
int fn = 256*256;
sampl_t *data, *dp;
float v;
init_parsed_options(&options);
options.subdevice = -1;
options.n_chan = 100000;/* default number of samples */
parse_options(&options, argc, argv);
dev = comedi_open( options.filename );
if(dev == NULL){
fprintf(stderr, "error opening %s\n", options.filename);
return -1;
}
if(options.subdevice < 0)
options.subdevice = comedi_find_subdevice_by_type(dev, COMEDI_SUBD_AI, 0);
maxdata = comedi_get_maxdata(dev, options.subdevice, options.channel);
rng = comedi_get_range(dev, options.subdevice, options.channel, options.range);
memset(&cmd,0,sizeof(cmd));
/*
cmd.subdev = options.subdevice;
cmd.flags = 0;
cmd.start_src = TRIG_INT;
cmd.start_arg = 0;
cmd.scan_begin_src = TRIG_TIMER;
cmd.scan_begin_arg = 1e9 / options.freq;
cmd.convert_src = TRIG_TIMER;
cmd.convert_arg = 1e9 / options.freq / 50;
cmd.scan_end_src = TRIG_COUNT;
cmd.scan_end_arg = options.n_chan;
cmd.stop_src = TRIG_COUNT;
cmd.stop_arg = fn;
cmd.stop_src = TRIG_NONE;
cmd.stop_arg = 0;
*/
cmd.scan_begin_src = TRIG_TIMER;
cmd.flags = TRIG_ROUND_NEAREST;
err = comedi_get_cmd_generic_timed( dev, options.subdevice,
&cmd, options.n_chan,
1e9 / options.freq );
cmd.start_src = TRIG_INT;
cmd.start_arg = 0;
cmd.scan_end_arg = options.n_chan;
cmd.stop_src = TRIG_NONE;
cmd.stop_arg = 0;
cmd.chanlist = chanlist;
cmd.chanlist_len = options.n_chan;
for ( k=0; k<options.n_chan; k++ )
chanlist[k] = CR_PACK(k, options.range, options.aref);
dump_cmd(stderr,&cmd);
if ( cmd.scan_begin_arg > 1e9 / options.freq ) {
fprintf( stderr, "frequency too high! Maximum possible is %g Hz\n", 1.0e9/cmd.scan_begin_arg );
comedi_close( dev );
return 1;
}
err = comedi_command_test(dev, &cmd);
if (err > 0 && err != 4 ) {
fprintf( stderr, "comedi_command_test returned %d\n", err );
dump_cmd(stdout,&cmd);
exit(1);
}
err = comedi_command_test(dev, &cmd);
if (err > 0 && err != 4 ) {
fprintf( stderr, "comedi_command_test returned %d\n", err );
dump_cmd(stdout,&cmd);
exit(1);
}
dump_cmd(stderr,&cmd);
/* init data buffer: */
data = (sampl_t *)malloc( fn*sizeof( sampl_t ) );
if(data == NULL ){
perror("malloc\n");
exit(1);
}
fprintf( stderr, "execute command ...\n" );
if ((err = comedi_command(dev, &cmd)) < 0) {
comedi_perror("comedi_command");
exit(1);
}
fprintf( stderr, "start analog input ...\n" );
ret = comedi_internal_trigger(dev, options.subdevice, 0);
if(ret < 0){
perror("comedi_internal_trigger\n");
exit(1);
}
n = 0;
while( 1 ) {
m = read(comedi_fileno(dev),(void *)data,fn*sizeof( sampl_t));
if(m<0){
if ( errno != EAGAIN ) {
perror("read");
exit(0);
}
else {
fprintf( stderr, "... no more data can be read! Try later.\n" );
usleep( 100000 );
}
}
else {
m /= sizeof( sampl_t);
fprintf( stderr, "read %d samples\n",m);
n+=m;
}
}
comedi_cancel( dev, cmd.subdev );
fprintf( stderr, "finished\n" );
/* save data: */
dp = data;
for ( k=0; k<n; k++ ) {
v = comedi_to_phys(*dp, rng, maxdata);
printf( "%g\n", v );
/* printf( "%d\n", *dp );*/
++dp;
}
free( data );
comedi_close( dev );
return 0;
}
void do_cmd(comedi_t *dev,comedi_cmd *cmd)
{
int total=0;
int ret;
int go;
fd_set rdset;
struct timeval timeout;
ret=comedi_command_test(dev,cmd);
printf("test ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("comedi_command_test");
return;
}
dump_cmd(stdout,cmd);
ret=comedi_command_test(dev,cmd);
printf("test ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("comedi_command_test");
return;
}
dump_cmd(stdout,cmd);
comedi_set_read_subdevice(dev, cmd->subdev);
ret = comedi_get_read_subdevice(dev);
if (ret < 0 || ret != cmd->subdev) {
fprintf(stderr,
"failed to change 'read' subdevice from %d to %d\n",
ret, cmd->subdev);
return;
}
ret=comedi_command(dev,cmd);
printf("ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("comedi_command");
return;
}
go=1;
while(go){
FD_ZERO(&rdset);
FD_SET(comedi_fileno(device),&rdset);
timeout.tv_sec = 0;
timeout.tv_usec = 50000;
ret = select(comedi_fileno(dev)+1,&rdset,NULL,NULL,&timeout);
//printf("select returned %d\n",ret);
if(ret<0){
perror("select");
}else if(ret==0){
/* hit timeout */
printf("timeout, polling...\n");
ret = comedi_poll(device,cmd->subdev);
printf("poll returned %d\n",ret);
}else if(FD_ISSET(comedi_fileno(device),&rdset)){
/* comedi file descriptor became ready */
//printf("comedi file descriptor ready\n");
ret=read(comedi_fileno(dev),buf,sizeof(buf));
printf("read returned %d\n",ret);
if(ret<0){
if(errno==EAGAIN){
go = 0;
perror("read");
}
}else if(ret==0){
go = 0;
}else{
int i;
total+=ret;
//printf("read %d %d\n",ret,total);
for(i=0;i<ret/sizeof(sampl_t);i++){
printf("%d\n",buf[i]);
}
}
}else{
/* unknown file descriptor became ready */
printf("unknown file descriptor ready\n");
}
}
}
int main(int argc, char *argv[])
{
comedi_t *dev;
comedi_cmd c,*cmd=&c;
int ret;
int total=0;
int i;
struct timeval start,end;
int subdev_flags;
lsampl_t raw;
struct parsed_options options;
init_parsed_options(&options);
parse_options(&options, argc, argv);
/* The following variables used in this demo
* can be modified by command line
* options. When modifying this demo, you may want to
* change them here. */
options.filename = "/dev/comedi0";
options.subdevice = 0;
options.channel = 0;
options.range = 6;
options.aref = AREF_DIFF;
options.n_chan = 8;
options.n_scan = 100000;
options.freq = 1000.0;
options.physical = 1;
/* open the device */
dev = comedi_open(options.filename);
if(!dev){
comedi_perror(options.filename);
exit(1);
}
// Print numbers for clipped inputs
comedi_set_global_oor_behavior(COMEDI_OOR_NUMBER);
/* Set up channel list */
//for(i = 0; i < options.n_chan/2; i++){
for(i = 0; i < options.n_chan; i++){
chanlist[i] = CR_PACK(options.channel + i, options.range, options.aref);
range_info[i] = comedi_get_range(dev, options.subdevice, options.channel, options.range);
maxdata[i] = comedi_get_maxdata(dev, options.subdevice, options.channel);
}
/*
for(i = options.n_chan/2; i < options.n_chan; i++){
fprintf(stderr,"%d: %d\n", i, options.channel + i + 8);
chanlist[i] = CR_PACK(options.channel + i + 8, options.range, options.aref);
range_info[i] = comedi_get_range(dev, options.subdevice, options.channel, options.range);
maxdata[i] = comedi_get_maxdata(dev, options.subdevice, options.channel);
}
*/
/* prepare_cmd_lib() uses a Comedilib routine to find a
* good command for the device. prepare_cmd() explicitly
* creates a command, which may not work for your device. */
prepare_cmd_lib(dev, options.subdevice, options.n_scan, options.n_chan, 1e9 / options.freq, cmd);
//prepare_cmd(dev, options.subdevice, options.n_scan, options.n_chan, 1e9 / options.freq, cmd);
fprintf(stderr, "command:\n");
dump_cmd(stderr, cmd);
/* this is only for informational purposes */
gettimeofday(&start, NULL);
fprintf(stderr,"start time: %ld.%06ld\n", start.tv_sec, start.tv_usec);
/* start the command */
ret = comedi_command(dev, cmd);
if(ret < 0){
comedi_perror("comedi_command");
exit(1);
}
subdev_flags = comedi_get_subdevice_flags(dev, options.subdevice);
while(1){
ret = read(comedi_fileno(dev),buf,BUFSZ);
if(ret < 0){
/* some error occurred */
perror("read");
continue;
}else if(ret == 0){
/* reached stop condition */
break;
}else{
static int col = 0;
int bytes_per_sample;
total += ret;
if(options.verbose)fprintf(stderr, "read %d %d\n", ret, total);
if(subdev_flags & SDF_LSAMPL)
bytes_per_sample = sizeof(lsampl_t);
else
bytes_per_sample = sizeof(sampl_t);
for(i = 0; i < ret / bytes_per_sample; i++){
if(subdev_flags & SDF_LSAMPL) {
raw = ((lsampl_t *)buf)[i];
} else {
raw = ((sampl_t *)buf)[i];
}
print_datum(raw, col, options.physical);
col++;
if(col == options.n_chan){
printf("\n");
col=0;
}
}
}
}
/* this is only for informational purposes */
gettimeofday(&end,NULL);
fprintf(stderr,"end time: %ld.%06ld\n", end.tv_sec, end.tv_usec);
end.tv_sec -= start.tv_sec;
if(end.tv_usec < start.tv_usec){
end.tv_sec--;
end.tv_usec += 1000000;
}
end.tv_usec -= start.tv_usec;
fprintf(stderr,"time: %ld.%06ld\n", end.tv_sec, end.tv_usec);
return 0;
}
void do_cmd(comedi_t *dev,comedi_cmd *cmd)
{
int total=0;
int ret;
int go;
fd_set rdset;
struct timeval timeout;
ret=comedi_command_test(dev,cmd);
printf("test ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("comedi_command_test");
return;
}
dump_cmd(stdout,cmd);
ret=comedi_command_test(dev,cmd);
printf("test ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("comedi_command_test");
return;
}
dump_cmd(stdout,cmd);
ret=comedi_command(dev,cmd);
printf("ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("comedi_command");
return;
}
go=1;
while(go){
FD_ZERO(&rdset);
FD_SET(comedi_fileno(dev),&rdset);
timeout.tv_sec = 0;
timeout.tv_usec = 50000;
ret = select(comedi_fileno(dev)+1,&rdset,NULL,NULL,&timeout);
if(ret<0){
perror("select");
}else if(ret==0){
/* timeout */
}else if(FD_ISSET(comedi_fileno(dev),&rdset)){
ret=read(comedi_fileno(dev),buf,BUFSZ);
if(ret<0){
if(errno==EAGAIN){
go = 0;
perror("read");
}
}else if(ret==0){
go = 0;
}else{
//int i;
total+=ret;
//printf("read %d %d\n",ret,total);
//printf("count = %d\n",count);
do_toggle();
#if 0
for(i=0;i<ret;i+=sizeof(sampl_t)){
do_toggle();
}
#endif
}
}
}
}
void MainWindow::timerEvent(QTimerEvent *)
{
unsigned char buffer[readSize];
while( comedi_get_buffer_contents(dev, COMEDI_SUB_DEVICE) > 0 )
{
if( read(comedi_fileno(dev), buffer, readSize) == 0 )
{
printf("Error: end of Aquisition\n");
exit(1);
}
int v;
if( sigmaBoard )
v = ((lsampl_t *)buffer)[adChannel];
else
v = ((sampl_t *)buffer)[adChannel];
double yNew = comedi_to_phys(v,
crange,
maxdata);
if (filter50HzCheckBox->checkState()==Qt::Checked) {
yNew=iirnotch->filter(yNew);
}
RawDataPlot->setNewData(yNew);
int trialIndex = time % psthLength;
if( linearAverage && psthOn )
{
spikeCountData[trialIndex] += yNew;
psthData[trialIndex] = spikeCountData[trialIndex] / (time/psthLength + 1);
}
else if( !spikeDetected && yNew>spikeThres )
{
if(psthOn)
{
int psthIndex = trialIndex / psthBinw;
spikeCountData[psthIndex] += 1;
psthData[psthIndex] = ( spikeCountData[psthIndex]*1000 ) /
( psthBinw * (time/psthLength + 1) );
spikeDetected = true;
}
}
else if( yNew < spikeThres )
{
spikeDetected = false;
}
if( trialIndex == 0 )
psthActTrial += 1;
++time;
}
RawDataPlot->replot();
}