Struct stm32wlxx_hal::rcc::Lsco

pub struct Lsco { /* private fields */ }

Low-speed oscillator output pin.

Implementations

impl Lsco

pub unsafe fn enable( a2: A2, sel: LscoSel, rcc: &mut RCC, cs: &CriticalSection ) -> Self

Enable the low-speed oscillator output.

Safety

1. Backup domain write protect must be disabled.
2. The selected clock must be enabled for system use.

Example

use stm32wlxx_hal::{
    gpio::PortA,
    pac,
    rcc::{Lsco, LscoSel},
};

let mut dp: pac::Peripherals = pac::Peripherals::take().unwrap();

// disable backup domain write protect
dp.PWR.cr1.modify(|_, w| w.dbp().enabled());

// enable the LSE clock
dp.RCC
    .bdcr
    .modify(|_, w| w.lseon().on().lsesysen().enabled());
while dp.RCC.bdcr.read().lserdy().is_not_ready() {}
while dp.RCC.bdcr.read().lsesysrdy().is_not_ready() {}

let gpioa: PortA = PortA::split(dp.GPIOA, &mut dp.RCC);
let a2: Lsco = cortex_m::interrupt::free(|cs| unsafe {
    Lsco::enable(gpioa.a2, LscoSel::Lse, &mut dp.RCC, cs)
});

pub unsafe fn disable(self, rcc: &mut RCC) -> A2

Disable the low-speed oscillator output.

Safety

1. Backup domain write protect must be disabled.

Example

use stm32wlxx_hal::{
    gpio::{pins, PortA},
    pac,
    rcc::{Lsco, LscoSel},
};

let mut dp: pac::Peripherals = pac::Peripherals::take().unwrap();

// disable backup domain write protect
dp.PWR.cr1.modify(|_, w| w.dbp().enabled());

// enable the LSE clock
dp.RCC
    .bdcr
    .modify(|_, w| w.lseon().on().lsesysen().enabled());
while dp.RCC.bdcr.read().lserdy().is_not_ready() {}
while dp.RCC.bdcr.read().lsesysrdy().is_not_ready() {}

let gpioa: PortA = PortA::split(dp.GPIOA, &mut dp.RCC);
let lsco: Lsco = cortex_m::interrupt::free(|cs| unsafe {
    Lsco::enable(gpioa.a2, LscoSel::Lse, &mut dp.RCC, cs)
});

// ... use LSCO

let a2: pins::A2 = unsafe { lsco.disable(&mut dp.RCC) };

Trait Implementations

impl Debug for Lsco

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.