Function highest_freq_in 

pub const fn highest_freq_in(
    range: RangeInclusive<Rate<u32, 1000, 1>>,
) -> Frequency

Available on crate feature spi only.

Returns the highest SPI frequency available on the MCU that fits into the requested range.

Examples

Assuming the MCU is only able to do up to 8 MHz:

let freq = const { highest_freq_in(Kilohertz::kHz(200)..=Kilohertz::MHz(16)) };
assert_eq!(freq, hal::spi::main::Frequency::F(Kilohertz::MHz(8)));

Panics

This function is only intended to be used in a const context. It panics if no suitable frequency can be found.