1#![no_std]
2#![no_main]
3
4use core::fmt::Write;
5use core::panic::PanicInfo;
6
7use hal_mik32::gpio::port_1::{Pin08, Pin09};
8use hal_mik32::rcc::RCC;
9use hal_mik32::usart::{Config, Serial};
10use mik32_pac::Peripherals;
11
12const MESSAGE_DELAY_SPINS: u32 = 500_000;
13
14#[unsafe(no_mangle)]
15pub extern "C" fn main() -> ! {
16 let peripherals = Peripherals::take().unwrap();
17
18 let rcc_config = RCC::default();
19 RCC::init(&rcc_config);
20
21 peripherals
22 .pm
23 .clk_apb_m_set()
24 .modify(|_, w| w.pad_config().enable().pm().enable());
25
26 let rx = Pin08::new().into_serial_port();
27 let tx = Pin09::new().into_serial_port();
28
29 let serial = Serial::new(peripherals.usart_1, (tx, rx), Config::default());
30 let (mut tx, _rx) = serial.split();
31
32 loop {
33 let _ = writeln!(tx, "Hello from MIK32 USART1");
34 delay(MESSAGE_DELAY_SPINS);
35 }
36}
37
38#[inline(always)]
39fn delay(spins: u32) {
40 for _ in 0..spins {
41 core::hint::spin_loop();
42 }
43}
44
45#[panic_handler]
46fn panic(_info: &PanicInfo) -> ! {
47 loop {
48 core::hint::spin_loop();
49 }
50}
51
52#[unsafe(no_mangle)]
53#[inline(never)]
54pub extern "C" fn trap_handler() {
55 loop {
56 core::hint::spin_loop();
57 }
58}