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/*
Copyright (C) 2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
Nicolas Bourdaud <nicolas.bourdaud@epfl.ch>
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include "acquisition.h"
static size_t nstot;
static unsigned int fs;
static
void data_cb(void* data, size_t ns, float* eeg, float *sens, int32_t *tri)
{
size_t i, sec;
(void)data;
(void)eeg;
(void)sens;
(void)tri;
for (i=nstot; i<nstot+ns; i++) {
if (i % fs == 0) {
sec = i/fs;
printf(sec % 10 ? "." : "|");
fflush(stdout);
}
}
nstot += ns;
}
int main(int argc, char *argv[])
{
char str[256] = {'\0'};
const char* devstring = NULL;
struct acq* acq;
int opt;
// Parse command line options
while ((opt = getopt(argc, argv, "d:h")) != -1) {
switch (opt) {
case 'd':
devstring = optarg;
break;
default: /* '?' */
fprintf(stderr, "Usage: %s [-d devstr]\n", argv[0]);
return (opt == 'h') ? EXIT_SUCCESS : EXIT_FAILURE;
}
}
// Open the connection to the data acquisition device
if (!(acq = acq_init(devstring, data_cb, NULL)))
return EXIT_FAILURE;
fs = acq_get_info(acq, ACQ_FS);
for (;;) {
nstot = 0;
printf("Enter a filename for recording "
"(Ctrl+D to exit):\n");
if (scanf(" %255s%*1c", str) == EOF)
break;
// Create and initialize file for recording
if (acq_prepare_rec(acq, str))
continue;
printf("Press ENTER to start recording\n");
while(getchar() != '\n');
acq_start(acq);
printf("Press ENTER to stop recording\n");
while(getchar() != '\n');
// Stop file recording and close it
acq_stop(acq);
}
// Close the connection to the data acquisition device
acq_close(acq);
return EXIT_SUCCESS;
}
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