ariel_os::spi::main

Function highest_freq_in

pub const fn highest_freq_in(
    range: RangeInclusive<Rate<u32, 1000, 1>>,
) -> Frequency
Available on crate feature spi only.
Expand description

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.