49 lines
1.5 KiB
Rust
49 lines
1.5 KiB
Rust
#![deny(unsafe_code)]
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#![no_std]
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#![no_main]
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extern crate panic_semihosting;
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use cortex_m_rt::entry;
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use embedded_hal::digital::v2::OutputPin;
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use rtt_target::{rprintln, rtt_init_print};
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use stm32f1xx_hal::{delay::Delay, pac, prelude::*};
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#[entry]
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fn main() -> ! {
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rtt_init_print!();
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// Get access to the core peripherals from the cortex-m crate
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let cp = cortex_m::Peripherals::take().unwrap();
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// Get access to the device specific peripherals from the peripheral access crate
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let dp = pac::Peripherals::take().unwrap();
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// Take ownership over the raw flash and rcc devices and convert them into the corresponding
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// HAL structs
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let mut flash = dp.FLASH.constrain();
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let mut rcc = dp.RCC.constrain();
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// Freeze the configuration of all the clocks in the system and store the frozen frequencies in
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// `clocks`
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let clocks = rcc.cfgr.freeze(&mut flash.acr);
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// Acquire the GPIOC peripheral
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let mut gpioc = dp.GPIOC.split(&mut rcc.apb2);
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// Configure gpio C pin 13 as a push-pull output. The `crh` register is passed to the function
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// in order to configure the port. For pins 0-7, crl should be passed instead.
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let mut led = gpioc.pc13.into_push_pull_output(&mut gpioc.crh);
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let mut delay = Delay::new(cp.SYST, clocks);
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// Blink using the delay function
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loop {
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rprintln!("blink");
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led.set_high().unwrap();
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delay.delay_ms(1000u16);
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rprintln!("blonk");
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led.set_low().unwrap();
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delay.delay_ms(1000u16);
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}
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}
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