Function wpilib_sys::bindings::HAL_SetCounterUpdateWhenEmpty

pub unsafe extern "C" fn HAL_SetCounterUpdateWhenEmpty(
    counterHandle: HAL_CounterHandle, 
    enabled: HAL_Bool, 
    status: *mut i32
)

Selects whether you want to continue updating the event timer output when there are no samples captured.

The output of the event timer has a buffer of periods that are averaged and posted to a register on the FPGA. When the timer detects that the event source has stopped (based on the MaxPeriod) the buffer of samples to be averaged is emptied.

If you enable the update when empty, you will be notified of the stopped source and the event time will report 0 samples.

If you disable update when empty, the most recent average will remain on the output until a new sample is acquired.

You will never see 0 samples output (except when there have been no events since an FPGA reset) and you will likely not see the stopped bit become true (since it is updated at the end of an average and there are no samples to average).

@param counterHandle the counter handle @param enabled true to enable counter updating with no samples