Function pamoja_pca9685_prescale_for_frequency 

#[unsafe(no_mangle)]
pub extern "C" fn pamoja_pca9685_prescale_for_frequency(
    update_rate_hz: u32,
    osc_hz: u32,
) -> u8

Returns the prescale value that sets a PCA9685 update rate.

Returns

The prescale register value, clamped to what the part accepts.