77 lines
1.8 KiB
Rust
77 lines
1.8 KiB
Rust
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#![deny(warnings)]
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#![deny(unsafe_code)]
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#![no_main]
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#![no_std]
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extern crate panic_itm;
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use cortex_m;
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use cortex_m_rt::entry;
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use stm32h7xx_hal::hal::digital::v2::OutputPin;
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use stm32h7xx_hal::{pac, prelude::*};
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use cortex_m_log::println;
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use cortex_m_log::{
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destination::Itm, printer::itm::InterruptSync as InterruptSyncItm,
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};
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#[entry]
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fn main() -> ! {
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let cp = cortex_m::Peripherals::take().unwrap();
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let dp = pac::Peripherals::take().unwrap();
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let mut log = InterruptSyncItm::new(Itm::new(cp.ITM));
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// Constrain and Freeze power
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println!(log, "Setup PWR... ");
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let pwr = dp.PWR.constrain();
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let vos = pwr.freeze();
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// Constrain and Freeze clock
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println!(log, "Setup RCC... ");
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let rcc = dp.RCC.constrain();
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let ccdr = rcc.sys_ck(100.mhz()).freeze(vos, &dp.SYSCFG);
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println!(log, "");
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println!(log, "stm32h7xx-hal example - Blinky");
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println!(log, "");
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let gpiob = dp.GPIOB.split(ccdr.peripheral.GPIOB);
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let gpioe = dp.GPIOE.split(ccdr.peripheral.GPIOE);
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// Configure PE1 as output.
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let mut green = gpiob.pb0.into_push_pull_output();
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let mut yellow = gpioe.pe1.into_push_pull_output();
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let mut red = gpiob.pb14.into_push_pull_output();
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// Get the delay provider.
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let mut delay = cp.SYST.delay(ccdr.clocks);
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let mut num = 0;
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loop {
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delay.delay_ms(500_u16);
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if num & 4 != 0 {
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green.set_high().unwrap();
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}
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else {
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green.set_low().unwrap();
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}
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if num & 2 != 0 {
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yellow.set_high().unwrap();
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}
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else {
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yellow.set_low().unwrap();
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}
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if num & 1 != 0 {
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red.set_high().unwrap();
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}
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else {
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red.set_low().unwrap();
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}
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num = (num + 1) % 8;
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}
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}
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