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https://github.com/esp-rs/esp-hal.git
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be184a552d
* CS impl * use CS Mutex in C3 examples * use CS Mutex in S2 examples * Update esp32 example * run fmt * Update S3 examples * Remove uses of unsafe where no longer required * use esp_backtrace in examples * fix import & fmt once more * Bump MSRV to 1.60.0 Co-authored-by: Jesse Braham <jesse@beta7.io>
49 lines
1.2 KiB
Rust
49 lines
1.2 KiB
Rust
//! Blinks an LED
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//!
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//! This assumes that a LED is connected to the pin assigned to `led`. (GPIO4)
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#![no_std]
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#![no_main]
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use esp32s2_hal::{
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clock::ClockControl,
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gpio::IO,
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pac::Peripherals,
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prelude::*,
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timer::TimerGroup,
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Delay,
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Rtc,
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};
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use esp_backtrace as _;
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use xtensa_lx_rt::entry;
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#[entry]
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fn main() -> ! {
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let peripherals = Peripherals::take().unwrap();
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let system = peripherals.SYSTEM.split();
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let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
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let timer_group0 = TimerGroup::new(peripherals.TIMG0, &clocks);
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let mut wdt = timer_group0.wdt;
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let mut rtc = Rtc::new(peripherals.RTC_CNTL);
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// Disable MWDT and RWDT (Watchdog) flash boot protection
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wdt.disable();
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rtc.rwdt.disable();
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// Set GPIO4 as an output, and set its state high initially.
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let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
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let mut led = io.pins.gpio4.into_push_pull_output();
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led.set_high().unwrap();
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// Initialize the Delay peripheral, and use it to toggle the LED state in a
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// loop.
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let mut delay = Delay::new(&clocks);
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loop {
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led.toggle().unwrap();
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delay.delay_ms(500u32);
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}
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}
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