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Check subdevice type.

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This commit is contained in:
Ian Abbott 2009-08-13 11:16:04 +00:00
parent 8a29362cd4
commit becded6ae0
1 changed files with 13 additions and 1 deletions
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14
demo/gpct_pulse_generator.c
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@ -102,6 +102,7 @@ int main(int argc, char *argv[])
unsigned up_time;
unsigned period_ns;
int retval;
int subdevice_type;
struct parsed_options options;
init_parsed_options(&options);
@ -125,7 +126,18 @@ int main(int argc, char *argv[])
comedi_perror(options.filename);
exit(-1);
}
/*FIXME: check that device is counter */
subdevice_type = comedi_get_subdevice_type(device, options.subdevice);
if(subdevice_type < 0)
{
comedi_perror("comedi_get_subdevice_type()");
return -1;
}
if(subdevice_type != COMEDI_SUBD_COUNTER)
{
fprintf(stderr, "Subdevice is not a counter (type %i), but of type %i.\n",
COMEDI_SUBD_COUNTER, subdevice_type);
return -1;
}
printf("Generating pulse train on subdevice %d.\n", options.subdevice);
printf("Period = %d ns.\n", period_ns);
printf("Up Time = %d ns.\n", up_time);