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#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/time.h>
#include <errno.h>
#include "zaptel.h"
int main(int argc, char *argv[])
{
int fd;
int x = 8000;
int res;
fd_set fds;
struct timeval orig, now;
fd = open("/dev/zap/timer", O_RDWR);
if (fd < 0) {
fprintf(stderr, "Unable to open timer: %s\n", strerror(errno));
exit(1);
}
printf("Opened timer...\n");
if (ioctl(fd, ZT_TIMERCONFIG, &x)) {
fprintf(stderr, "Unable to set timer: %s\n", strerror(errno));
exit(1);
}
printf("Set timer duration to %d samples (%d ms)\n", x, x/8);
printf("Waiting...\n");
gettimeofday(&orig, NULL);
for(;;) {
FD_ZERO(&fds);
FD_SET(fd, &fds);
res = select(fd + 1, NULL, NULL, &fds, NULL);
if (res != 1) {
fprintf(stderr, "Unexpected result %d: %s\n", res, strerror(errno));
exit(1);
}
x = -1;
if (ioctl(fd, ZT_TIMERACK, &x)) {
fprintf(stderr, "Unable to ack timer: %s\n", strerror(errno));
exit(1);
}
gettimeofday(&now, NULL);
printf("Timer Expired (%d ms)!\n", (now.tv_sec - orig.tv_sec) * 1000 + (now.tv_usec - orig.tv_usec) / 1000);
}
exit(0);
}
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