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#![no_std]
#![no_main]
use embassy_executor::Spawner;
use embassy_mcxa as hal;
use hal::lpuart::{Config, Lpuart};
use hal::rtc::{RtcDateTime, RtcInterruptEnable};
use hal::InterruptExt;
type MyRtc = hal::rtc::Rtc<'static, hal::rtc::Rtc0>;
use embassy_mcxa::bind_interrupts;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
RTC => hal::rtc::RtcHandler;
});
#[used]
#[no_mangle]
static KEEP_RTC: unsafe extern "C" fn() = RTC;
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = hal::init(hal::config::Config::default());
// Create UART configuration
let config = Config {
baudrate_bps: 115_200,
enable_tx: true,
enable_rx: true,
..Default::default()
};
// Create UART instance using LPUART2 with P2_2 as TX and P2_3 as RX
unsafe {
embassy_mcxa_examples::init_uart2_pins();
}
let mut uart = Lpuart::new_blocking(
p.LPUART2, // Peripheral
p.P2_2, // TX pin
p.P2_3, // RX pin
config,
)
.unwrap();
uart.write_str_blocking("\r\n=== RTC Alarm Example ===\r\n");
let rtc_config = hal::rtc::get_default_config();
let rtc = MyRtc::new(p.RTC0, rtc_config);
let now = RtcDateTime {
year: 2025,
month: 10,
day: 15,
hour: 14,
minute: 30,
second: 0,
};
rtc.stop();
uart.write_str_blocking("Time set to: 2025-10-15 14:30:00\r\n");
rtc.set_datetime(now);
let mut alarm = now;
alarm.second += 10;
rtc.set_alarm(alarm);
uart.write_str_blocking("Alarm set for: 2025-10-15 14:30:10 (+10 seconds)\r\n");
rtc.set_interrupt(RtcInterruptEnable::RTC_ALARM_INTERRUPT_ENABLE);
unsafe {
hal::interrupt::RTC.enable();
}
unsafe {
cortex_m::interrupt::enable();
}
rtc.start();
uart.write_str_blocking("RTC started, waiting for alarm...\r\n");
loop {
if rtc.is_alarm_triggered() {
uart.write_str_blocking("\r\n*** ALARM TRIGGERED! ***\r\n");
break;
}
}
uart.write_str_blocking("Example complete - Test PASSED!\r\n");
}
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