pub unsafe extern "C" fn DAQmxCreateCOPulseChanFreq(
    taskHandle: TaskHandle,
    counter: *const c_char,
    nameToAssignToChannel: *const c_char,
    units: int32,
    idleState: int32,
    initialDelay: float64,
    freq: float64,
    dutyCycle: float64
) -> int32