54 lines
1.4 KiB
Rust
Executable file
54 lines
1.4 KiB
Rust
Executable file
#![no_main]
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#![no_std]
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use defmt::{debug, error, info, println, trace, warn};
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use panic_probe as _;
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use defmt_rtt as _; // global logger
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use cortex_m_rt::entry;
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use hal::{pac, prelude::*, rcc::Config};
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// same panicking *behavior* as `panic-probe` but doesn't print a panic message
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// this prevents the panic message being printed *twice* when `defmt::panic` is invoked
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#[defmt::panic_handler]
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fn panic() -> ! {
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cortex_m::asm::udf()
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}
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#[entry]
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fn main() -> ! {
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let dp = pac::Peripherals::take().unwrap();
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let cp = cortex_m::Peripherals::take().unwrap();
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// Configure the clock.
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let mut rcc = dp.RCC.freeze(Config::hsi16());
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// Acquire the GPIOA peripheral. This also enables the clock for GPIOA in
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// the RCC register.
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let gpioa = dp.GPIOA.split(&mut rcc);
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// Configure PA5 as output.
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let mut led = gpioa.pa5.into_push_pull_output();
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// Get the delay provider.
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let mut delay = cp.SYST.delay(rcc.clocks);
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#[allow(clippy::never_loop)]
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loop {
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println!("Hello World!");
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trace!("trace log");
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debug!("debug log");
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info!("info log");
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warn!("warn log");
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error!("error log");
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led.set_high().unwrap();
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delay.delay_ms(500_u16);
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led.set_low().unwrap();
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delay.delay_ms(500_u16);
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panic!("This will use the defmt panic handler too");
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}
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}
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