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#![no_std]
#![feature(rustc_private)]
extern crate fusible;
use core::pin::Pin;
use imxrt_ral as ral;
use imxrt_rt as _;
use imxrt1170evk_fcb as _;
use rust_threadx_cortex_m as _;
use rust_threadx_stdio_semihosting as _;
#[doc(hidden)]
#[unsafe(no_mangle)]
pub unsafe extern "C" fn _tx_initialize_low_level() {
use cortex_m::{
Peripherals,
peripheral::{scb::SystemHandler, syst::SystClkSource},
};
cortex_m::interrupt::disable();
unsafe {
let Peripherals {
mut SYST, mut SCB, ..
} = Peripherals::steal();
SCB.set_priority(SystemHandler::SysTick, 0x40);
SCB.set_priority(SystemHandler::PendSV, 0xff);
SCB.set_priority(SystemHandler::SVCall, 0xff);
SYST.set_clock_source(SystClkSource::External);
SYST.set_reload(100_000 / 100 - 1);
SYST.clear_current();
SYST.enable_interrupt();
SYST.enable_counter();
}
unsafe {
use ral::ccm;
let ccm = ccm::CCM::instance();
let clock_root = &ccm.CLOCK_ROOT[8];
ral::modify_reg!(ccm::clockroot, clock_root, CLOCK_ROOT_CONTROL, MUX: 1, DIV: 240 - 1);
}
unsafe {
use ral::iomuxc;
let iomuxc = iomuxc::IOMUXC::instance();
ral::write_reg!(iomuxc, iomuxc, SW_MUX_CTL_PAD_GPIO_AD_04, MUX_MODE: 5, SION: 0);
ral::write_reg!(iomuxc, iomuxc, SW_PAD_CTL_PAD_GPIO_AD_04, PUE: 0);
}
unsafe {
use ral::gpio;
let gpio3 = gpio::GPIO3::instance();
const GPIO3_OUTPUTS: u32 = led::MASK;
ral::write_reg!(gpio, gpio3, GDIR, GPIO3_OUTPUTS);
}
}
/// Controls the LED.
pub mod led {
use crate::ral::gpio;
pub(crate) const MASK: u32 = 1 << 3;
/// Turn on the LED.
#[inline]
pub fn set() {
unsafe { crate::ral::write_reg!(gpio, gpio::GPIO3, DR_SET, MASK) };
}
/// Turn off the LED.
#[inline]
pub fn clear() {
unsafe { crate::ral::write_reg!(gpio, gpio::GPIO3, DR_CLEAR, MASK) };
}
/// Toggle the LED.
///
/// This is achieved in hardware, without reading the current state
/// of the LED. It's usually more efficient.
#[inline]
pub fn toggle() {
unsafe { crate::ral::write_reg!(gpio, gpio::GPIO3, DR_TOGGLE, MASK) };
}
/// Drive the LED on or off.
#[inline]
pub fn drive(value: bool) {
if value { set() } else { clear() }
}
}
use fusible::thread::{StaticStack, Thread, ThreadContext};
static STACK: StaticStack<512> = StaticStack::new();
static THREAD: ThreadContext = Thread::context();
#[unsafe(no_mangle)]
#[doc(hidden)]
pub extern "C" fn __rust_threadx_app_define() {
Thread::create(
Pin::static_ref(&THREAD),
STACK.take().unwrap(),
&Default::default(),
|| loop {
fusible::thread::sleep(25);
led::toggle();
},
)
.unwrap();
}
|
