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#![no_std]
#![no_main]
use embassy_executor::Spawner;
use embassy_mcxa276 as hal;
use hal::uart;
mod common;
use embassy_mcxa276::bind_interrupts;
use embassy_time::{Duration, Timer};
use {defmt_rtt as _, panic_probe as _};
// Bind only OS_EVENT, and retain the symbol explicitly so it can’t be GC’ed.
bind_interrupts!(struct Irqs {
OS_EVENT => hal::ostimer::time_driver::OsEventHandler;
});
#[used]
#[no_mangle]
static KEEP_OS_EVENT: unsafe extern "C" fn() = OS_EVENT;
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let _p = hal::init(hal::config::Config::default());
// Enable/clock OSTIMER0 and UART2 before touching their registers
unsafe {
common::init_ostimer0(hal::pac());
}
unsafe {
common::init_uart2(hal::pac());
}
let src = unsafe { hal::clocks::uart2_src_hz(hal::pac()) };
let uart = uart::Uart::<uart::Lpuart2>::new(_p.LPUART2, uart::Config::new(src));
uart.write_str_blocking("boot\n");
// Avoid mass NVIC writes here; DefaultHandler now safely returns.
// Initialize embassy-time global driver backed by OSTIMER0 (re-enables OS_EVENT with priority)
// The bind_interrupts! macro handles handler binding automatically
// Initialize OSTIMER with default 1MHz frequency
// Adjust this value to match your actual OSTIMER clock frequency
hal::ostimer::time_driver::init(hal::config::Config::default().time_interrupt_priority, 1_000_000);
// Removed force-pend; rely on real hardware match to trigger OS_EVENT.
// Log using defmt if enabled
defmt::info!("OSTIMER async example starting...");
loop {
defmt::info!("tick");
uart.write_str_blocking("tick\n");
Timer::after(Duration::from_millis(1000)).await;
}
}
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