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Use negative options.value to set up time as a duty cycle.

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This commit is contained in:
Ian Abbott 2009-08-13 11:09:05 +00:00
parent 2387fcffef
commit 8a29362cd4
1 changed files with 9 additions and 2 deletions
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11
demo/gpct_pulse_generator.c
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@ -105,11 +105,18 @@ int main(int argc, char *argv[])
struct parsed_options options;
init_parsed_options(&options);
options.value = -1.;
options.value = -0.5;
parse_options(&options, argc, argv);
period_ns = lrint(1e9 / options.freq);
if(options.value < 0.)
up_time = period_ns / 2;
{
double duty;
if(-options.value < 1.0)
duty = -options.value;
else
duty = 1.0 / -options.value;
up_time = lrint(duty * period_ns);
}
else
up_time = lrint(options.value);
device = comedi_open(options.filename);